The latest 2025 complete guide to May outfits for men in their 30s! 15 mature outfits with a sense of the season!

 

May is the transitional month from spring to summer, when temperatures and weather change dramatically.

Men in their thirties are required to coordinate their outfits with a sense of seasonality while still looking mature and comfortable.

In this article, we will provide a thorough explanation of the key points for selecting clothing based on the weather in May, 15 coordinated outfits for each scene, recommended items, and information on trends for the year 2025.

We provide a practical fashion guide for all occasions, from business to private.

 

Points to consider when choosing May weather and attire

In May, Japan enjoys pleasant weather with average temperatures ranging from 15 to 25°C (59 to 86°F), although the climate varies from region to region.

However, it is important to select clothing that can cope with changes in weather conditions, such as temperature differences between morning and evening and sudden rain. Let's take a look at some tips on how to dress comfortably and understand the unique climate of this time of year.

The most important factor in choosing clothing for May is layering. Since it is often chilly in the morning and hot during the day, it is convenient to wear layered clothing that is easy to put on and take off.

For example, a shirt or light jacket over a T-shirt can be adjusted according to changes in temperature. The choice of material is also important. Natural, breathable materials such as cotton and linen will prevent stuffiness and keep you comfortable.

May is also known as "the time to change clothes," but the trick is not to shift completely to summer clothes, but to combine spring and summer items well.

Specifically, you can enjoy mix-and-match coordination unique to the change of seasons by pairing spring pants with summer shirts, or summer pants with spring light outerwear.Preparing for sudden weather changesRemember to carry a folding umbrella and a lightweight jacket in case of sudden weather changes.

15 May outfits for men in their 30s

May is the perfect season to enjoy fashion for a variety of occasions.

From business to casual, here are 15 outfit patterns that enhance the adult appeal of men in their 30s.

Coordinating your outfits to suit each occasion will create a relaxed atmosphere while incorporating a sense of the season, and will also enhance your credibility with those around you.

Office Casual Style

Office casual, which can be easily incorporated into business situations, is a style that makes up a large part of everyday life for men in their 30s. Here are three coordinated outfits that are perfect for May that are neat but not stuffy.

The first is the "navy jacket and beige chinos" combination. A navy jacket made of lightweight material is a standard item for May. A blue oxford shirt inside will give you a fresh impression. The key to this look is to add a seasonal touch with suede loafers on the feet. This style is,Meeting with a clientand other situations where a little formality is required.

The second is the "gray knit and white pants" coordination. Lightweight cotton knitwear can easily cope with the change in temperature in May, and combined with white pants, it gives a clean, spring-like impression. Bring a jacket with you so you can be prepared for sudden meetings. This style is,Work in the officeandCasual Day WorkIt is ideal for

The third is the "khaki shirt jacket and denim" combination. Shirt jackets, which are halfway between a shirt and a jacket, come in handy as a cloak in May. By wearing a white T-shirt as an inner layer and dark denim as bottoms, you can create a casual yet mature look. This style is,Creative OccupationsandCompanies with a casual corporate cultureand companies with a casual corporate culture.

Relaxed holiday style

Holidays are a great opportunity to express your personality. Here are three styles for a relaxed yet elegant holiday look for adults. Spend a fulfilling weekend in an outfit that is both comfortable and sophisticated.

The first is the marine-style "striped cut-and-sewn and chinos" look, which suits the fresh weather of May and is an item that can easily be adopted by those in their thirties as well. By pairing it with beige chinos, you can achieve a perfect balance of casual yet not childish. Add canvas sneakers for a light and airy look,Picnic in the parkor a picnic in the parkRelaxing time at a caféIt is the perfect place to spend a relaxing time.

The second combination is "linen shirt and denim shorts," a comfortable, breathable linen shirt for hot days in late May. Wearing it with three-quarter sleeves or rolled up gives you a more relaxed feeling. It also goes well with denim shorts,Seaside or resortand create a relaxing time at the beach or resort. However, in order to show a 30-something look, it is important to choose knee-length shorts.

The third is the athleisure style of "Sweatshirt Setup x White Sneakers. A sweatshirt set-up made of high quality material is not just loungewear, but a sophisticated casual style. You can choose a calm color such as gray or navy, for example.COLORyou will look like an adult in his or her 30s. This style is,shopping mallandCasual get-togethers with friendsor a casual get-together with friends.

Date Style

The key to date fashion in your 30s is to look clean and comfortable at the same time. Here are three May date coordination styles that will make a good impression on the other party, while not losing your own personality.

The first is the smart casual style of "polo shirt and slim pants. Polo shirts with a luxurious feel are a strong ally of men in their 30s. Deep colors such as navy and burgundyCOLORIf you choose a deep color such as navy or burgundy, it will accentuate your adult appeal. Matching it with slim chino pants gives a casual yet classy impression. This style is,Cafe DateorMuseum Tourand other occasions that require a casual yet slightly elegant look.

The second is the refreshing "patterned shirt and white pants" coordinate: a shirt with a floral or fine check pattern, perfect for May, can be worn with white pants to create a fresh, spring-like look. Suede loafers or slip-ons on the feet are perfect for a seasonal look. This style,Lunch dateorZoos and amusement parksand other active dates.

The third is the elegant casual style of "knit polo and tapered pants. A knit polo shirt has a more luxurious feel than a regular polo shirt and gives the impression of being more mature. Pair it with navy or gray tapered pants for a relaxed yet sophisticated look. This style is,Dinner dateorMovieThis is the perfect date night for a slightly special evening such as

Travel Style

May is also the beginning of the travel season as the weather begins to stabilize. Here are three ways to coordinate a memorable trip while striking a balance between functionality and appearance.

The first is a comfortable travel style of "linen shirt and stretch pants. A highly functional linen shirt that resists wrinkling will keep you comfortable even on long journeys. Combined with stretch pants, you can move with ease. This style is,City SightseeingandMuseum toursand other trips that involve a lot of walking. Not only is it functional, but it is also ideal for travel fashion for 30-somethings, for whom a sophisticated, photo-worthy impression is important.

The second is the layered style of "cardigan x T-shirt x chinos. A cardigan is an essential item for travel, as it can easily cope with the temperature difference between morning and evening. By simply adding a cardigan to a simple basic outfit of a T-shirt and chinos, you can cope with a variety of temperatures. This style is,Onsen (hot spring) tripandResortsand resorts. Cardigans are easy to carry and can be quickly slipped into a bag, which is a big advantage when traveling.

The third is the "activewear x light outerwear" style that emphasizes functionality. High-performance T-shirts and pants from outdoor brands excel in sweat absorption and quick-drying properties, making them ideal for active travel. In addition, a lightweight windbreaker or fleece can be combined to cope with sudden weather changes. This style is,Mountaineering and hiking、CyclingNot too flashy, just like a 30-something.COLORYou can also show your maturity by choosing a match that is not too flashy, just like a person in his/her 30s.

Wedding and after-party style

May is also the arrival of the wedding season. Here are three suggestions for what to wear when attending as a guest or at a casual after-party.

The first is the "navy suit and light blue shirt" formal style. A wedding staple, the navy suit is a great choice for a spring wedding. Pair it with a light blue shirt and a lighter tie for a seasonal look. This style is,Daytime WeddingandWedding at a prestigious venueBy the time you reach your thirties, you will be the guest of honor, so it is essential that you have the proper formal wear.

The second is the "gray jacket and white pants" semi-formal style. The combination of a gray jacket and white pants matches the fresh atmosphere of May. Matching a light pink or lavender shirt will create a glamorous look appropriate for a wedding. This style is,Garden WeddingandWedding at a casual venueare suitable for White pants are a staple item for summer, but by introducing them in May, you can show off your stylishness one step ahead.

The third is the "jacket and denim" after-party style. Although the after-party of a wedding is a more casual affair than the main ceremony, this does not mean that you should dress too casually in a T-shirt and jeans. A navy or gray jacket and dark denim will give a casual yet classy impression. Shirts or knitwear can be used as an inner layer. This style is,Casual after-partyor1.5th partyThis is a perfect fit for a format called

Items recommended for May

To enhance your May fashion, it is important to choose items that are appropriate for the season. From tops to bottoms, outerwear, shoes, and accessories, here are recommended items by category for the May wardrobe of men in their 30s. By having these items, you will be able to broaden your range of outfits for various occasions.

Tops

The key to selecting tops for May is to choose materials that can cope with changes in temperature and designs that incorporate a sense of the season.

The first item that cannot be missed is the linen shirt. Linen material is highly breathable and comfortable even on a hot and humid day in May. Pale colors such as white and light blueCOLORIf you choose light colors such as white and light blue, you can create a fresh spring and summer look. It is a versatile item that can be used for both casual and business wear,COLORIt will be useful to have several different pieces for different occasions.

Polo shirts are more formal than T-shirts and more casual than shirts, and can be used in a wide range of situations from casual office wear to holiday style. In addition to the standard pique material, knit shirts are also particularly recommended for people in their 30s.Balance between breathability and luxuryThe knit polo with a good balance of breathability and luxury will make you feel like an adult.

In addition, "oversized T-shirts" are also a trendy item this season. However, if you are in your 30s, it is important to choose a silhouette with a moderately relaxed feel rather than one that is extremely oversized. If you choose a solid color, it is easy to wear and can be used as innerwear or outerwear. Pay attention to the material, and choose a comfortable one made of 100% cotton or a blend of cotton and linen for long-lasting use.

Bottoms

When choosing bottoms for May, it is important to strike a balance between lightness and functionality; here are some bottoms that will enhance the appeal of mature men in their 30s.

The first standard choice is the "chinos. They are a typical bottom for the spring and summer season and go well with a variety of tops.COLORIn May, choosing a lighter color such as beige or light gray will give a sense of the season. Choosing those with stretch material will also ensure a comfortable fit. For the silhouette, a "tapered" type that is neither too thin nor too thick will balance out the figure of a 30-something.

Next, we would like to focus on "linen pants. By incorporating linen into bottoms as well as tops, you can make your outfit more summer-ready. This is especially useful on hot days in the latter half of May. Linen is characterized by its wrinkled appearance, but recently there are more and more linen pants that have been processed to resist wrinkling,easy to use even in business situations.It is advisable to choose a product that is easy to use in business situations.

In addition, "colored pants" are also recommended for May. If you are in your 30s, it is best to choose pants that are not too bright.COLORAvoid "too bright" and go for a slightly duller shade of blue.COLORIf you are in your thirties, you can wear them in a more mature way by choosing a slightly duller color instead of too bright. Try this not only for holiday style, but also for casual office wear such as casual Fridays.

Outerwear

Outerwear in May has two roles: to keep you warm on chilly days and to accentuate your styling. Here are some recommended outerwear for men in their 30s that will work well during the change of season.

The first item that cannot be missed is the "linen jacket. Lightweight and breathable, linen jackets are ideal for May temperatures. There are a variety of designs, from casual to tailored types, so choose the one that best suits your needs. Especially "unconstructed jackets," which are lightly tailored and omit lining and shoulder pads,Both relaxing and classyrelaxing and elegant at the same time.

Next, we recommend the "light blouson. Lightweight blousons, which are not as formal as jackets, complete the casual style. The material can vary from cotton, nylon, polyester, etc. In May, choosing a water-repellent material will be convenient for dealing with sudden rain. Classic designs, such as Harrington jackets and coach jackets, in particular, match the relaxed atmosphere of people in their 30s.

Finally, "cardigans" are another important outerwear item for May. They are also useful in the office as a cloak to cope with the cooler morning and evening temperatures. There are a variety of materials available, from 100% cotton to cashmere blends, but light cotton or cotton-silk blends are recommended for May. In addition to basic colors such as navy and gray, brighter colors such as light blue and beigeCOLORlight blues and beiges to create a spring-like outfit.

Shoes

When choosing shoes for May, lightness and a sense of the season are important, so here are some recommendations for men in their 30s to add color to their feet.

The first standard is the suede loafer, a versatile shoe that can be used from May until early fall and can be worn for both casual and business casual wear. Especially in lighter browns, navy and beige.COLORIf you choose the right flavor, you will get a light, spring and summer impression. You can start wearing styles with no socks in May, but if you are in your 30s, we recommend using invisible foot covers.

The next best choice is the canvas sneaker. Lighter and more seasonal than leather sneakers, canvas sneakers are a staple of holiday style. In addition to the standard white, you can choose from navy, olive, and other subduedCOLORYou can also choose navy or olive for a more mature look. Low-cut sneakers are easier to match than high-cut ones for adult casual wear in your thirties.

Mesh slip-ons" are also recommended for May. Mesh slip-ons with excellent breathability are useful from the latter half of May when it starts to get hot. Combining ease of wear with a sophisticated design, slip-ons are easy to match with shorts styles as well as casual pants styles.Simple designYou can avoid an overly casual look by choosing a pair of

Accessories

It is also important to choose accessories that will elevate your May outfit, and we recommend the following items that will give men in their 30s a mature and relaxed look.

First of all, a linen pocket chief is a must-have. For a pocket chief that will elevate your jacket style, we recommend a fresh linen pocket chief for May. Not only plain white, but also spring-like colors such as pale blue and pink are available.COLORcolors such as pale blue and pink will add a sense of the season. Same tone as shirtCOLORyou can create a coordinated look with a sense of unity.

Next, we recommend a straw hat, which not only protects your head from the strong May sun, but also serves as a fashion item. In particular, classic designs such as Panama hats and can-can hats match the relaxed atmosphere of people in their thirties. Incorporate them into your resort vacation or weekend getaway.

Leather bracelets" are another accessory that can be used from May to early fall. Just a simple leather bracelet on the wrist, which can be seen when the shirt sleeve is rolled up, will give you a cozy look. Avoid flashy designs,Simple, single leather, thin typewill give you an accent that gives you a mature impression.

Furthermore, a "folding umbrella" is also an essential item for May. We recommend that you always carry a compact and lightweight folding umbrella in case of sudden rain. Plain black or navy blue umbrellas are the standard, but if you are in your 30s, you may choose one with a subtle checked or striped pattern.

Tips for incorporating the May trend

Here are some tips on how to enjoy a calm and relaxed style that is typical of 30-somethings while incorporating the May 2025 trend. We have compiled advice and pointers on how to establish a style that is unique to you without following trends too closely.

Sustainable materials" are a major trend in men's fashion in May 2025. Many items made from recycled materials and environmentally friendly manufacturing methods are appearing on the market. If you are in your 30s, it is important to have an attitude of choosing quality items that can be used for a long time, not just because they are "trendy. For example, try to incorporate items that combine design and environmental friendliness, such as T-shirts made of organic cotton or blousons made of recycled polyester.

Another trend for 2025 is "monotone coordination. Styling based on black, white, and gray is attracting attention, but for those in their 30s, it is recommended to incorporate some trendy colors into basic items, rather than making the entire body monotone. Specifically,Simple coordination of a white T-shirt and gray pantswith a white T-shirt and gray pants, and a trend-colored jacket and accessories.

Wide silhouettes continue to be a popular trend, but for those in their 30s, it is important to choose a silhouette with a moderately relaxed feel, rather than one that is extremely wide. For example, when wearing wide trousers, keep the top in a sleek silhouette and keep a good balance in mind.

The most important point when incorporating trends is to determine what looks good on you. in your 30s, it is important to choose fashion that matches your body shape, atmosphere, and lifestyle. By trying not to be too influenced by trends, and by keeping in mind styling that makes the most of one's individuality, one will be able to look more attractive.

Recommended brands by budget

Everyone has a different fashion budget for men in their 30s, but here are some tips for choosing brands and recommended brands to help you shop wisely according to your budget.

Knowing which brands are cost-effective, neither too expensive nor too cheap, will help you build an efficient wardrobe.

In the low to mid-price range, fast fashion brands such as UNIQLO and GU with excellent cost performance can also be fully utilized for men in their 30s.

UNIQLO linen shirts and AIRISM polo shirts in particular,Exquisite balance of quality and priceThey are popular as items that strike a perfect balance between quality and price. However, for items that should maintain their shape, such as suits and jackets, we recommend that you raise your budget a little and choose a good one.

Middle price rangeIn the mid-price range, select store brands such as Nano Universe and United Arrows are recommended. They offer a wide range of items, from basic items to slightly trendy items, and can cover both business casual and private styles for people in their 30s. In particular, the select store's original line has many items with excellent cost performance, so it is worth checking them out.

High price rangeIn the higher price range, simple but high-quality brands such as Paul Smith and Margaret Howell are recommended. It is not unusual for outerwear, especially jackets and coats, which will be used for a long time, to be worn for 10 years or more if you choose good ones. Although the initial investment may be high, it will be an economical choice in the long run.

Our fashion shopping site "NNine" has a wide selection of items for a wide range of styles from business to casual, with the main target being men in their 30s.

The best thing about NNine is that it offers a wide variety of seasonal items that are especially recommended for May and can be coordinated with a good balance of trends and staples,High quality and reasonable pricingNNine's appeal lies in its high quality and reasonable pricing.

As a brand that meets the needs of men in their 30s for "high quality at a reasonable price," it has gained a lot of support.

Also attractive are the benefits unique to a mail-order site, such as stylist-supervised coordination suggestions and flexible support for size exchanges.

For busy men in their 30s, the ability to obtain high quality fashion without having to go to a physical store is a major advantage.

We recommend using a highly specialized mail-order site like NNine to update your wardrobe in May, when the seasons change.

Regardless of budget, the key for men in their 30s when choosing clothing is to focus on value rather than cosmetics.

Don't just buy cheap, but consider the overall value to you in terms of design, material, comfort, durability, and other factors.

It is especially important when choosing clothing for May to select items with an eye toward long-term wear over the summer.

Conclusion.

What did you think? In this article, we have explained a wide range of topics, from the key points for men in their 30s in May, to 15 coordinated outfits by scene, recommended items, how to incorporate trends, and brands by budget.

May is the transitional month from spring to summer, and it is important to choose clothing that can cope with changes in temperature and weather. By utilizing layering and keeping in mind styles that are easy to put on and take off, you can stay comfortable throughout the day.

In addition, the age of 30s is a time when a balance between youthful and mature fashion is required. Aim for a coordinated look that incorporates trends but does not forget your own personality and elegance.

In this section on scene-specific coordination, we have introduced styling for a variety of occasions, from office casual to holiday style, dates, travel, and weddings. Especially when you are in your 30s, not only in your private life,Impression in business situationsBy being conscious of the right outfit for the right occasion, you will gain the trust of those around you.

In selecting items, we have recommended items by category, such as tops, bottoms, outerwear, shoes, and accessories. In particular, items made of linen and light fabrics will be excellent items that will be used from May through summer.

In addition, in the section on how to incorporate trends, we have provided tips on how to enjoy a calm style that is typical of people in their 30s, while keeping up with the trends of 2025. The best part of men's fashion for 30-somethings is to establish your own style rather than being swayed by trends.

Finally, in selecting brands by budget, we introduced a range of brands from those with excellent cost performance to luxury brands with high investment value.

We hope you will use this article as a guide to enhance your May fashion and enjoy dressing like a seasonable adult. Finding a style that suits you and spending each day with confidence is the true joy of fashion, don't you think?