Summer in Japan 2026: Weather and Travel in June - August

Summer Weather in Japan, What to Wear, and Travel Tips

Summer in Japan lasts from June to August and is characterized by extreme humidity and temperatures frequently exceeding 30°C (86°F), particularly in cities like Tokyo, Kyoto, and Osaka.

To escape the heat, consider heading to northern Japan—especially Hokkaido, which remains cool and dry—or elevated mountain destinations such as Nikko, Karuizawa, Hakone, and Hakuba.

This guide covers everything you need for a summer trip to Japan, including weather, packing essentials, top destinations, and must-see events like local festivals and fireworks displays.

Summer in Japan: Travel Tips 2026

Summer Temperatures and Weather in Japan
- Late June is the Rainy Season
- July and August: Japan's Hottest Months
Weather in Japan in June and What to Wear
Weather in Japan in July and What to Wear
Weather in Japan in August and What to Wear
Top 7 Summer Destinations in Japan
1. Mt. Fuji
2. Nikko
3. Karuizawa
4. Hakone
5. Hokkaido
6. Hakuba (Nagano)
7. Kikuchi Gorge (Kumamoto)
Japanese Beaches and the Swimming Season
Summer Festivals and Fireworks
Japanese Summer Cuisine

Summer Temperatures and Weather in Japan

Summer in Japan is hot and humid. The season usually begins in June and lasts through August.

For visitors traveling from regions with more temperate weather, the heat and the humidity in Japan might be difficult to get used to, but with some planning and strategizing, it is possible to avoid the heat and discomfort.

Late June: Rainy Season in Japan

By late June, Japan experiences both rising heat and high humidity as the rainy season, or tsuyu, begins. Lasting through early July, this period in Tokyo sees an average daytime temperature of 22°C (72°F) and significant rainfall, averaging 167.7 mm.

Despite the rain, this season offers unique experiences found only this time of year, such as viewing the stunning hydrangeas that bloom in vibrant colors across the country.

July and August: Japan's Hottest Months

In recent years, rising temperatures have led to frequent heatstroke warnings, with Tokyo often reaching 35°C (95°F) in July and August.

Combined with humidity levels between 78% and 83%, the heat can be dangerous, so it is best to avoid long periods outside during the day. If you do venture out, stay hydrated, wear lightweight clothing, and carry a portable fan.

Weather in Japan in June and What to Wear

June marks the start of summer and the rainy season (tsuyu) in Japan. While Hokkaido remains dry due to its distinct climate, the rest of the archipelago experiences frequent rain and high humidity.

In terms of temperature, here is the breakdown of what to expect in June 2026 for major destinations in Jaoan:

City	Average High	Average Low	Humidity
Tokyo	26°C (79°F)	19°C (66°F)	Moderate-High
Osaka/Kyoto	28°C (82°F)	20°C (68°F)	High
Fukuoka	27°C (81°F)	20°C (68°F)	High
Hokkaido	21°C (70°F)	12°C (54°F)	Low (no rainy season)

While 27°C may seem mild, the high humidity can make it feel much hotter and the air quite heavy.

To stay comfortable, we recommend visiting indoor attractions like museums or climate-controlled amusement parks.

What to Wear in Japan in June

Short-sleeved shirts in breathable fabrics like linen are ideal for Japan's June weather. However, it is wise to carry a light jacket or a large scarf for chilly evenings, mountainous areas, or heavily air-conditioned trains.

While you should pack waterproof or quick-drying footwear, don't worry about bulky rain gear—light raincoats and umbrellas are widely available at convenience stores for around 500 yen.

Weather in Japan in July and What to Wear

Early July usually sees the tail-end of the rainy season, giving way to Japan’s famously intense summer humidity by mid-month.

See how temperatures vary across major cities in this breakdown:

City	Average High	Average Low	Humidity
Tokyo	30°C (86°F)	23°C (73°F)	Very High (80%+)
Osaka/Kyoto	32°C (90°F)	24°C (75°F)	Extremely High
Fukuoka	31°C (88°F)	24°C (75°F)	High
Hokkaido	24°C (75°F)	17°C (63°F)	Moderate

In most of Japan—including Tokyo, Osaka, Kyoto, and Fukuoka—the end of the rainy season in mid-July brings little relief; while the rain stops, the humidity lingers, and temperatures soar.

Kyoto is particularly notorious during this time because its surrounding mountains trap the heat and moisture, making it feel several degrees hotter than the actual forecast.

Since temperatures rarely drop after sunset, you will likely need air conditioning around the clock in these cities.

In contrast, Hokkaido remains a comfortable "room temperature" in July—sunny, breezy, and ideal for the outdoors. This is also the peak season to witness the world-famous lavender fields in Furano and Biei.

What to Wear in Japan in July

Photo by Pixta

July in Japan is intensely hot and humid, making breathable fabrics like cotton, thin short-sleeved shirts, and dresses essential. To protect against the sun, wear a wide-brimmed hat in unshaded areas.

When visiting temples or shrines, please dress modestly; avoid sleeveless tops or revealing clothing, or carry a light layer to cover your arms out of respect.

Also, since trains and shops often blast air conditioning, keep a light jacket or scarf handy to manage the sharp temperature contrast.

Essential Survival Tips for July

- Carry a "Cooling Kit": Keep items like cooling neck rings, portable electric fans, and menthol body wipes close at hand. You can find these easily at drugstores like Matsumoto Kiyoshi or at Don Quijote.

- Stay Hydrated: Drink electrolyte-rich "ion-supply" beverages like Pocari Sweat or Aquarius to replenish what you lose to the intense humidity.

- Sun Protection: With the UV index reaching extreme levels in July, sun protection is vital. Parasols are common for all genders in Japan—don't hesitate to use one to carry your own shade.

Weather in Japan in August and What to Wear

August is the hottest month of the year in Japan, with the thick heat that defines the country's peak summer experience.

August temperatures at major destinations in Japan are as follows:

City	Average High	Average Low	Humidity
Tokyo	31°C (88°F)	24°C (75°F)	~78%
Osaka/Kyoto	33°C (92°F)	25°C (77°F)	High
Fukuoka	32°C (90°F)	25°C (77°F)	High
Hokkaido	26°C (79°F)	19°C (66°F)	Moderate

In Tokyo, Osaka, and Fukuoka, August is relentlessly hot; high humidity often makes a 32°C day feel like 38°C (100°F). Kyoto remains particularly challenging, as its geography traps the air and prevents breezes from circulating, frequently making it the hottest city in the country.

In contrast, while temperatures in Hokkaido can occasionally reach 30°C, the air lacks the oppressive humidity found further south. Evenings are refreshingly cool.

August also marks the start of the peak typhoon season. While storms are not a daily occurrence, a typhoon can ground flights and halt trains for 24–48 hours. It is always wise to have a "rainy day" backup plan, such as visiting museums, just in case.

What to Wear in Japan in August

Photo by Pixta

We recommend wearing light, breathable clothing—such as summer dresses, T-shirts, and shorts—to manage the intense morning heat and humidity. Whenever possible, try to schedule outdoor activities for the cooler morning or evening hours.

Choosing the right material is key: synthetic "dry-fit" fabrics or thin linen are essential, as heavy 100% cotton tends to stay damp with sweat all day.

Also, a hat is a must for sun protection. You may also want to follow the local lead and use a "cool-towel"—a specialized cloth you soak in water and snap to activate an instant cooling effect around your neck.

Top 7 Summer Destinations in Japan

1. Mt. Fuji

A view of Mt. Fuji
Mt. Fuji is a dream destination for many who come to Japan. The iconic, 3,776-meter (12,388 feet) mountain is open to climbers annually between July and September. With its international fame, the mountain trails are very crowded, especially on weekends and public holidays, so those interested in trying this challenge should prepare ahead of time.

For those looking to enjoy views of Mt. Fuji, areas like Hakone, Lake Kawaguchiko, and the Fuji Five Lakes region are excellent places to visit to take in the mountain from afar. These regions are popular sightseeing areas, with high-quality lodging options, entertainment, and delicious local specialties.

Take the Fuji Excursion limited express from Shinjuku Station to get to the base of the mountain and other nearby sightseeing regions directly from Tokyo. The comfortable ride takes around two hours.

2. Nikko

Nikko is one of the most popular summer holiday destinations in Japan due to its rich, beautiful nature, history, and cool temperatures even during the hottest months. The city can be reached in about two hours by train from Tokyo.

Nikko might be best known as the home of World Heritage sites such as Nikko Toshogu, Rinnoji Temple and Nikko Futarasan Shrine. However, ever since the Meiji Period (1868-1912) when Imperial villas and diplomatic summer residences were built here, Nikko was a favorite summer resort spot for many people living in the Tokyo area and international visitors.

Nikko is a mountainous area, offering stunning scenery. Chuzenji Lake, the Kegon Falls, or the Senjogahara Wetlands are just some of the spectacular places that are a must-visit.

There are various types of hotels and ryokan (Japanese inns) in Nikko, with some of them boasting a history of over one hundred years such as Nikko Kanaya Hotel. The area is ideal for a relaxing summer vacation.

3. Karuizawa

Karuizawa, located in Nagano, will be the first place mentioned by a Japanese person when asked about the ideal summer destination.

Located at a high altitude and surrounded by lush forests, the nature-filled Karuizawa is considerably cooler than the metropolitan areas in summer. Enjoy Karuizawa by hiking around the famous Shiraito Falls and Kumoba Pond and shopping at Karuizawa Prince Shopping Plaza.

In addition to its scenic spots, Karuizawa boasts excellent hot springs that can be enjoyed all around the year. Visitors can enjoy soaking in an onsen during a cool summer night.

After a trip to Karuizawa, you'll feel refreshed, full of vigor, and relaxed, ready to deal with everyday life again.

4. Hakone

Hakone is an excellent resort area for those who wish to enjoy nature, hot springs, and art. There are many art museums and galleries in the area, not to mention the artistically designed Japanese inns that welcome guests with the utmost hospitality. Hakone is accessible from Tokyo in about 2 hours: take the Odakyu Romancecar from Shinjuku Station for a comfortable, quick ride.

The forests and the mountains make Hakone considerably cooler than Tokyo. The best way to enjoy a summer holiday in Hakone is by visiting its excellent art museums, taking part in cruises on Lake Ashi, and enjoying hot springs and delicious local food.

5. Hokkaido

Hokkaido, the northernmost prefecture of Japan, is ideal for a summer trip. In addition to the splendid nature that one can experience in Furano, Biei or Akan, Hokkaido also boasts beautiful urban areas such as Sapporo, Hakodate or Asahikawa.

Hakodate, for instance, has a long history as a port city. Many buildings with architecture that is rarely seen in Japan can be found here. The city's nightscape has even ranked first as the most beautiful night view in Japan.

Summer is the season when the world-famous lavender fields of Tomita Farm are in bloom. Check the article below for information on access and other points of interest in Hokkaido.

6. Hakuba

Hakuba, in Nagano, might be best known as one of the major ski resorts in the Japanese Alps. However, during summer, it is a cool, lush green paradise with splendid views of the alpine peaks. Hakuba is accessible via Shinkansen and train from Tokyo in around 4 hours, making it a destination worth spending a few days at.

Summer in Hakuba is a season where many domestic and international travelers travel here to enjoy hiking, biking, swimming, and a wide range of other outdoor activities. The area has a rich flora, with rare plants and flowers that are specific to the Alps.

Glamping is an increasingly popular activity in Hakuba. If you wish to enjoy a leisurely stay in the heart of nature, Hakuba might be the best choice.

7. Kikuchi Gorge

Photo by Pixta

Located within Aso Kuju National Park, Kikuchi Gorge (Kikuchi Keikoku) spans 4 kilometers and serves as a serene trekking destination. The gorge offers a peaceful ambiance with a blend of cascading waterfalls and calm, meandering stretches of water. Visitors can explore this emerald-green paradise by using the walkways and paths in the park.

The Kikuchi Gorge maintains a refreshing summer average water temperature of 13 degrees, making it the perfect seasonal escape.

The valley resounds with the gentle flow of the river and the melodies of chirping birds, inviting dream-like reveries. Whether it's the vibrant hues of autumn leaves mirrored in the stream or the lush greenery of spring and summer, the Kikuchi Gorge captivates visitors, offering a soothing retreat for all.

Please note that the Kikuchi Gorge is closed in the winter months. The gorge can be accessed only from March until November 30.

Kikuchi Gorge website: https://kumamoto.guide/en/spots/detail/12009

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Japanese Beaches and the Swimming Season

The swimming season in Japan usually starts at the end of June and lasts through August. Some of the famous beaches near Tokyo are Yuigahama in Kamakura and Onjuku Beach in Chiba, while Okinawa boasts some of the most beautiful beaches in Japan.

Due to extremely high summer temperatures in recent years, we recommend caution when spending long hours at the beach. Wear sunscreen, rest under a beach parasol, and drink large quantities of water.

One of the best ways to enjoy Japan's beaches in the summer is by visiting them early in the morning when the air is still relatively cool, or at dusk. The sunsets at beaches in Zushi, Enoshima, or Hayama are very beautiful.

Summer Festivals and Fireworks

Awa Odori Festival. Photo by Pixta

Japan is known for its vibrant and culturally rich festivals throughout the year, especially during the summer months. Some of the famous summer festivals in Japan include:

1. Gion Matsuri (Kyoto): One of Japan's most famous festivals, held in July in Kyoto. It features colorful processions of floats and traditional performances.

2. Tenjin Matsuri (Osaka): Held in July, this festival is one of Osaka's largest summer events featuring boat processions on the Dojima River and fireworks displays.

3. Awa Odori (Tokushima): Taking place in Tokushima in August, this festival is one of Japan's largest traditional dance festivals with participants dancing through the streets.

4. Nebuta Matsuri (Aomori): Held in Aomori in August, this festival is known for its spectacular illuminated floats depicting historical and mythical figures.

5. Firework Festivals: Various cities across Japan host impressive fireworks displays during the summer, including events in Tokyo, Yokohama, and Nagoya.

Photo by Pixta

6. Sumida River Fireworks Festival (Tokyo): One of Tokyo's biggest fireworks displays, held in late July, attracts millions of visitors along the Sumida River.

7. Sendai Tanabata Matsuri (Sendai): Celebrated in August, this festival features colorful decorations and paper streamers adorning the city streets.

8. Yosakoi Soran Festival (Hokkaido): Held in Sapporo in June, this festival features lively dance performances combining traditional and modern elements.

At each of these festivals, visitors can also try delicious traditional festival food and beverages, and wear traditional clothes such as yukata and jinbei.

These festivals showcase various aspects of Japanese culture, including traditional dance, music, food, and colorful decorations. Attending one of these summer festivals can provide a unique and immersive experience into Japan's rich cultural traditions and vibrant community celebrations.

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Japanese Summer Cuisine

Picture from Japanese Encyclopedia: Somen and Nagashi Somen

Due to the intense heat in the summer, Japanese cuisine during this season centers around chilled dishes utilizing fresh ingredients. Japan is well-known for its delicious kakigori, or shave ice, which is crushed ice flavored with sweet syrup or condensed milk.

Kakigori desserts are easy to find during the summer months, as is sold at festivals and appears on the menu of many restaurants. Other common sweet treats are seasonal fruits, including watermelon, peaches, and cherries.

Chilled noodle dishes are also essential during the summer. Well-known dishes include zaru soba , buckwheat noodles that are served cold with a light broth, and chilled somen, or thin wheat noodles, which come with fresh toppings and a cold dipping broth. Both meals are delicious, light, and suitable for the summertime.

Outdoor beer gardens are also held during the summer throughout Japan and are well-attended. Pricing and plans vary by location, but visitors usually pay a fixed fee for an all-you-can-drink plan within a certain time limit. Depending on the plan, food is also included and usually consists of food that is easy to eat, including edamame, french fries, and meat dishes.

In addition to beer gardens, kawadoko, or outdoor patio seating built over a river bed, are offered by certain restaurants in Japan during the summer as well. The types of cuisine at these restaurants range from Japanese over Italian to American-style food.

Customers dining on the kawadoko can relax with the cool mist rising from the river while enjoying dining on delicious food. Kyoto is particularly well-known for its kawadoko.

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Enjoy Summer in Japan

Traveling in Japan during the summer is a great opportunity to experience the Japanese culture related to this season such as fireworks, festivals, and delicious food. While the heat and the weather conditions during this time of the year require paying more attention to physical well-being, summertime is a special season in Japan that can be truly enjoyable.

Main image: Kikuchi Gorge. Photo by Pixta