The temperature of 20 degrees Celsius means that some days are warm and comfortable all day long, but at the change of seasons, there are also days with large temperature differences, so you need to decide what to wear accordingly. 20 degrees Celsius is the highest or lowest temperature, and the items you combine with it will depend on whether it is the highest or lowest temperature. In this issue, we focus on “the best clothes for 20 degrees Celsius” and introduce men’s outfits!
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What is the best clothing for a maximum temperature of 20 degrees Celsius?Dressing with light outerwear is the mainstay!
On days with a maximum temperature of 20°C, which are common in the Tokyo metropolitan area in spring from early April to early May and in autumn from early October to mid-November, you will want to prepare light outerwear that is easy to put on and take off, as the morning and evening are often cold, although the days are pleasant. For those who like it hot, a T-shirt or light shirt is recommended, and for those who like it cold, a thick shirt or light knit is recommended as an inner layer.
Men's clothing for a maximum temperature of 20 degrees Celsius 1Using long-sleeved shirts as outerwear
The first one is a shirt and cut-and-sew combination. According to the Japan Weather Association’s forecast, ” Spring 2026 is expected to be warmer than normal mainly in western and eastern Japan ” *1, so those who have avoided purchasing expensive spring outerwear should try this style. As for how to wear it, an elegant outfit with a clean shirt and slacks is sure to be a winner. Also, choosing a patterned shirt or a shirt with pockets will give it a more outerwear-like feel.
*1 Quote: https://weather-jwa.jp/news/topics/post11457( Weather X powered by Japan Weather Association)
GENTLEMAN PROJECTS “BARON” is recommended for this style. This piece is perfect for a clean and simple outfit, and can be worn in two ways, “semi-wide collar” or “open collar,” depending on your mood. Also, if you are looking for a patterned item, check out the AURALEE “SUPER FINE WOOL STRIPE SHIRT. It is made of the brand’s finest count yarn and features an elegant atmosphere with a glossy sheen. It is washable, so you can wash it in your washing machine at home.
| Click here for details and purchase of GENTLEMAN PROJECTS “BARON |
| Click here for details and purchase of AURALEE “SUPER FINE WOOL STRIPE SHIRT |
Men's Outfits for Highs of 20°C 2Spring and Summer Cardigan over a Shirt or Cut and Sew
Cardigans are also an option for days with highs of 20°C. The way to wear it is not much different from the aforementioned shirt and cut and sewn, but a cardigan can easily be worn with a collared item such as a shirt or polo shirt as an inner layer. Also, since it does not wrinkle easily, it can be easily stowed away in a bag when taken off. In terms of item selection, thick wool or cashmere cardigans for fall and winter are too hot, so choose cotton, summer wool, linen, silk, or other spring and summer-inspired items.
This style includes JOHN SMEDLEY’s classic ” WISTING ” is recommended. This simple V-neck type piece is made of cotton and comes in over 10 different colors to choose from. Also, if you feel that a simple cardigan is somewhat lacking, check out GENTLEMAN PROJECTS’ “ZEN. The zakkaku, original knitted fabric works as an accent.
| Click here for more details and purchase of JOHN SMEDLEY’s “WISTING” |
| Click here for details and purchase of GENTLEMAN PROJECTS “ZEN”. |
Men's Outfits for Highs in the 20sJackets and Suits with a Light Atmosphere is the Current Mood
Jackets and suits are an option for days with high temperatures of 20 degrees C. If you are conscious of the 2026 spring/summer season, you should consider materials and silhouettes, If you are conscious of the 2026 spring/summer season, you should incorporate a light atmosphere through the choice of materials, silhouettes and items. Lightweight jackets made of shirt material, suits with relaxed silhouettes, and skimpy innerwear are effective options.
Here GENTLEMAN PROJECTS’ “BLUFF” jacket and “ALIBI” slacks are recommended for this style. These models, which can be worn as a set-up, have a relaxed silhouette that is very “in” style. Also, check out LACOSTE’s ” L.12.12 Arrange Skipper Neck Polo Shirt ” as an innerwear to go with such a suit style. Lacoste’s masterpiece has been reborn for this season.
Men's outfits for a maximum temperature of 20 degrees Celsius 4Approach a trendy style with a denim jacket
A denim jacket is also a strong choice if you want to practice casual style on a day with a maximum temperature of 20 degrees Celsius. Of course, the universal style with its own rugged atmosphere is also good looking. However, if you want to be more conscious of the 2026 style, try an A-line coordinate with a short and just right size denim jacket and loose fitting slacks as shown in the first gallery, or a preppy look with a regimental tie, cap, and socks as shown in the second and third galleries. Try the style with a regimental tie, cap and socks as shown in the second and third pictures.
In such outfits, you can always find a universal denim jacket that will never fade away. For those who want to wear a universal denim jacket that will not fade away in any age, Levi’s®︎ “TYPE I Tracker Jacket” is recommended. Among the brand’s standard models, this one is the shortest in length. For those who are looking for a design that sets itself apart from the standard, check out sacai’s ” Denim Jacket. The brand’s unique design features are scattered throughout based on a universal design.
| Click here for details and purchase of Levi’s®︎ ” TYPE I Trucker Jacket |
| Click here for more details and purchase of sacai “Denim Jacket |
What is the best way to dress for a minimum temperature of 20 degrees Celsius?You can wear just a top, but a light jacket for cooler mornings and evenings is a must!
In the Tokyo metropolitan area, minimum temperatures of 20°C tend to occur in early summer around late June to early July and in late summer/early autumn from late September to early October. Considering that daytime temperatures can rise to around 25°C, you can get by with just a T-shirt or shirt, but you may feel cold on windy days or when the air conditioning is working too hard. However, on windy days or when the air conditioning is too cool, you may feel cold.
Men's Outfit 1 in 20 degrees CelsiusWear a long-sleeved shirt lightly
The first style introduced here is a long-sleeved shirt worn lightly as a single piece. The appeal of this style is that it retains an elegant atmosphere, but can be worn with a variety of tastes depending on the choice of items and the way it is worn. For example, as shown in the fifth man in the gallery, the white shirt is paired with soft-colored pants and shoes that are close in tone to the white shirt, creating a quiet luxurious style with an understated contrast. Other examples include a sexy outfit based on dark tones with beltless pants and bit loafers, as shown in the sixth photo, or a preppy outfit with chinos and coin loafers, as shown in the third photo.
such long sleeve For shirt attire, we recommend the Polo Ralph Lauren ” Classic Fit Garment Dyed Oxford Shirt. This timelessly loved work has a nostalgic charm that can match both quiet luxury and preppy depending on how you match it. Also, if you want to add just the right amount of accent to a simple outfit, check out the Our Legacy ” BORROWED BD SHIRT. It incorporates an overfitted silhouette and a larger collar design.
| Click here for details and purchase of Polo Ralph Lauren “Classic Fit Garment Dyed Oxford Shirt” |
| Click here for more details and purchase of Our Legacy “BORROWED BD SHIRT”. |
Men's Outfits for 20°C Lowest Temperatures 2Short Sleeve Shirt & Cut & Sew Combination for a Cooler Look
On days with daytime temperatures in the low 20s, which can rise to around 25°C, a cool combination such as a short sleeve shirt and cut and sew is a strong option. Short-sleeved shirts tend to look childish depending on how they are worn, so if you want to wear them like an adult, match a plain, simple short-sleeved shirt with clean slacks. If you want to look more elegant, you can tuck it in like the man in the second photo in the gallery.
The COS “Cotton Seersucker Resort Shirt White” is recommended for this style. The design such as patch pockets on both chests and the open collar are good accents that do not make you feel inadequate even in a simple outfit. For those who want to take the plunge and try a luxurious piece, check out Jil Sander’s ” Fluid Viscose Shirt. The material used is viscose rayon for a lightweight finish.
| Click here for more details and purchase of COS “Cotton Seersucker Resort Shirt White” |
| Click here for details and purchase “Fluid Viscose Shirt” by JIL SANDER |
Men's Outfit for 20-degree Lowest Temperatures 3Long Sleeve T-Shirt as Classy City Wear
Long sleeve T-shirts are an option for 20-degree lowest temperature days. If an adult is going to wear a long sleeve T-shirt as street wear, he wants to give it a chic look to avoid looking like loungewear. The man in the first photo in the gallery is a good example. He is wearing a plain long sleeve T-shirt tucked into slacks and a pair of coin loafers on his feet, creating a classy style that is not embarrassing for street wear.
BATONER ” AMUNDSEN CREW NECK LONG SLEEVE” is recommended for this style. It is finished with a dry texture and good elasticity, and is best suited for a conservative, adult-like style. Also, check out GENTLEMAN PROJECTS’ “CAINE” dress T-shirt, which has a dressy atmosphere that looks great even when worn alone.
| Click here for more details and purchase of BATONER “AMUNDSEN CREW NECK LONG SLEEVE” |
| Click here for more details and purchase of GENTLEMAN PROJECTS “CAINE |
Men's Outfits for 20-degree minimum temperatures 4Long-sleeved shirts with shorts for an adult casual style
The timing of early summer, when the minimum temperature is often 20 degrees, makes the shorts style a strong candidate. However, since it is not mid-summer, a long-sleeved shirt or light outerwear should be worn as a top to maintain balance. For footwear, we recommend leather shoes, especially coin loafers, and crew socks. This will reduce the rough atmosphere characteristic of shorts and complete a casual style that can only be worn by adults.
To match this outfit BEAMS PLUS “Reg Collar Peruvian Pima” is recommended as a shirt. The smooth Pima cotton gives it a pleasant and elegant feel, and it goes well with any casual coordinate. For shorts, check out the JW Anderson ” twisted patch pocket shorts. At first glance, these shorts may look like a pair of universal cargo shorts, but they are littered with the witty designs that are typical of Jonathan Anderson.
| BEAMS PLUS “Reg Collar Peruvian Pima” Click here for more details and purchase |
| Click here for details and purchase ” twisted patch pocket shorts ” by JW Anderson |
