Japan Weather in August 2025: Travel Tips for the Hottest Month

August is the hottest and most humid time of the year in Japan, with daily highs sometimes reaching 37℃ (99℉). The high humidity can make it feel even stickier and more intense.

But it's also Japan's festive season, you'll see colorful parades, traditional dances, and fireworks lighting up the summer sky. It's one of the most exciting times to experience Japanese culture.

So, how can you enjoy Japan in August while avoiding the worst of the heat and crowds?

In this guide, I'll share everything you need to know from first-hand experience, including what the weather's really like, how to stay cool, where to go, and smart tips to make the most of your summer trip.

Japan's Weather and Climate in August

Japan is hot and muggy through August.

August is the hottest month of the year in central regions like Tokyo, Kyoto, Osaka, and Hiroshima. Temperatures range from 24-32°C (75-90°F), sometimes exceeding 37°C (99°F). The humidity is often over 80%, making it feel even hotter than it really is. If you're used to dry summers, you might find it uncomfortable and get sweaty easily.

But in Hokkaido, the Japanese Alps (Nagano and Kamikōchi), and other mountainous areas, the weather is cool. Particularly in Hokkaido, the daily highs range from 27-30°C (81-86°F) with lower humidity, making it much more comfortable.

August is the driest month of Japan's summer. The rainy season is over, and typhoon season hasn't started yet.

During the first half of August, you can expect many dry days with only occasional quick showers. However, rainfall tends to increase in the second half of the month as the typhoon season approaches.

Is Traveling to Japan in August a Bad Idea?

Not really! It's not as bad as people make it sound online. It all depends on how you plan your trip. With smart scheduling, the summer heat doesn't have to ruin your experience. Plus, August is one of the best times to enjoy Japan's vibrant festivals.

I suggest visiting outdoor attractions in the early mornings or late afternoons, and exploring indoor activities (like museums, cafes, or shopping) during the hottest part of the day.

If you're planning a summer trip, early August is your best time. Rainfall is low since the typhoon season hasn't started yet, and most festivals happen during this period.

If your travel dates are flexible, it's better to avoid August, as the summer heat can be quite uncomfortable. But if this is your only chance to visit, go for it! You'll still have an enjoyable journey.

Tokyo and Central Japan in August: Hot and Muggy

You'll experience hot and humid weather in central Japan cities like Tokyo, Kyoto, and Osaka.

The average temperature is around 24-32°C (76-90°F), sometimes peaking at 37°C (99°F). Kyoto feels hotter than the other cities due to its bowl-like geography, which traps heat.

Also, UV rays are especially strong in August. Don't forget your sunglasses, hats, and sunscreen. Otherwise, you might easily get sunburned.

You might expect less rain with just passing showers. However, towards the end of the month, as typhoons approach, the rain will gradually increase. Plus, with humidity at 80%, you'll feel muggy.

In fact, heat and rainfall are not big concerns in these cities. You can enjoy plenty of fun indoor activities, especially if you're traveling with your kids for summer vacations. For example, visit the Pokémon Center, explore the interactive TeamLab Borderless, or enjoy dessert at an anime cafe.

Hokkaido and Northern Japan in August: Summer Retreat

Summer in Hokkaido is cool and comfortable. Since it's farther north, the air isn't as humid, so you won't feel sticky.

Temperatures usually range from 17-25°C (63-77°F), with daily highs reaching around 30°C. However, in recent summers, even Hokkaido has been getting hot, with temperatures occasionally soaring up to 35°C (95°F).

Okinawa and Southern Japan in August: Typhoon Season Arrives

August in Okinawa stays hot and humid. It's also the peak season for beach vacations. With highs around 32-35°C (90-95℉), it's perfect for water activities like surfing and diving.

It is the typhoon season in Okinawa, bringing increased rainfall. Typically, a typhoon lasts no more than 3 days. Water activities and flights might be canceled if a typhoon hits. But once it passes, the weather becomes perfect!

Best 6 Places to Visit in Japan in August

Don't miss exclusive festivals and fireworks shows unique to this month. You can also explore cooler destinations for outdoor adventures. Here are our top 7 well-selected places to visit in Japan this month.

1. Kyoto: Traditional Celebration for Obon Festival

Kyoto is Japan's ancient medieval capital. With its many well-preserved historic buildings and traditional cultural experiences, you can easily feel an authentic Japanese atmosphere.

The Obon Festival is Japan's most important festival in August, known as Japan's Day of the Dead. Kyoto's Gozan no Okuribi bonfires (The Five Mountain Send-Off Fires) is the iconic traditional events that mark the end of the Obon.

The festival begins at 8:00 PM every year on August 16th. Bonfires light up five mountains in Kyoto, forming three Chinese characters, two shrine gates, and one boat shape.

You can see them from downtown Kyoto, but you'll need to move to 2-3 different spots to view all five bonfires. I suggest watching the most famous one, Daimonji (which roughly means "big letter"). For a clear, straight-on view, go to the Kyoto Imperial Palace.

Looking for something special? We can take you to Arashiyama. Here you can see three bonfires and lanterns floating on the river.

If you want to see all the designs from one spot, the best choice is the Kyoto Tower observation deck. But the characters may appear smaller due to the distance.

2. Tokyo: Explore Indoor High-Tech TeamLab Planets

Tokyo offers abundant indoor activities to help you stay cool, like anime cafes, a variety of museums, and cultural experiences. My top pick is TeamLab Planets. It's a highly interactive museum where both kids and adults can have a great family time.

TeamLab Planets has the most interactive exhibits. You and your child can touch and play with the artworks. What makes it special is the water zone, where you'll go barefoot to step into the art.

Though it's a bit far from downtown, our professional Japan travel advisors will assist you in combining it with other attractions, making the most of your time.

If you prefer a closer location, TeamLab Borderless is a great option. The artworks here blend digital elements with light, making it perfect for taking photos.

3. Nagaoka: Enjoy One of Japan's Top Three Fireworks Displays

August in Japan means fireworks! Don't miss the fun. The vivid colors and booming sounds will excite your kids. For the most unforgettable fireworks show, try the Nagaoka Fireworks Festival.

Hop on a 1.5-hour Shinkansen ride from Tokyo, and you can experience one of Japan's top three fireworks displays. The Nagaoka Fireworks, held every August 2-3, features over 20,000 fireworks (while most others have only a few thousand or ten thousand). The show lasts for 2 hours, offering a wide variety of fireworks for you to enjoy.

I strongly recommend opting for reserved seats. You won't have to arrive hours in advance to secure a spot. The area is a less crowded area and offers a much better view. We can help you purchase tickets and ensure you get great seats!

Read more about Japan's best firework festivals

4. Kamikōchi: Hiking in the Mountains to Escape the Heat

Looking to escape the summer heat? Kamikochi is the perfect destination. Located in the Japanese Alps, the temperatures hover around 25°C (77°F) in summer. You can get closer to nature and enjoy outdoor adventures.

Hiking is the best way to explore this place. You'll walk through lush forests, cross streams, relax by rivers, and admire majestic mountains. Whether you're a beginner or an expert, you'll find hiking routes suited to your level.

5. Aomori: Admire the Nebuta Festival's Giant Papier-mache Dolls

Interested in seeing float parades that differ from most festivals in Japan? Visit Aomori in the northeast of the country.

The Aomori Nebuta Festival is held annually from August 2 to 7. It is one of Japan's greatest summer festivals. The main highlight is the nightly parades featuring huge papier-mache lantern dolls.

The giant figures appear vivid under the lantern light. With the rhythmic beat of drums, dancing, and singing, you'll feel as if you're in a carnival.

The closing ceremony on August 7 is special. Giant dolls floats glide over the sea, while fireworks illuminate the sky. For the best experience, opt for paid seats for a close-up and clear view.

If you're planning to attend the Aomori Nebuta Festival, it's best to book your hotel at least 6 months in advance. The festival attracts over a million visitors each year, leading to high demand for hotels.

6. Nara: Experience Summer Nights with Lanterns and Deer

Nara is an ancient city in Japan. It is famous for its deer and many historic buildings.

The Nara Tokae Lantern Festival is a popular annual event held from August 5 to 14. With twenty thousand candles illuminating major shrines and temples, strolling around these sites transports you back in time. It creates a unique atmosphere different from the daytime.

Nara Park is the recommended place to experience the festival. You can interact with the deer up close and savor Japanese street food from snack stalls.

For a more serene lantern viewing experience, you can take a boat ride at Ukimido Pavilion.

What to Wear in Japan in August?

Nothing beats wearing breathable clothing in August! Choose lightweight options like linen t-shirts, loose-fitting pants and dresses, light-colored attire, and quick-drying fabrics.

Sun protection is a must due to the high UV rays on sunny days. Be sure to pack your sunscreen, hat, sunglasses, and a portable umbrella.

To stay cool outdoors, bring a portable fan. I highly recommend buying cooling wipes from any convenience store in Japan. Wearing one around your neck instantly cools you down!

How Crowded and Expensive is Japan in August?

August is one of the peak seasons in Japan, as many families with kids visit the country for their summer vacations. Expect higher travel costs and crowds during this time.

Prepare for large crowds at popular attractions. Start early in the morning to beat the crowds. We'll arrange for you to begin your day around 8 a.m., visiting top spots like Tokyo's Senso-ji or Kyoto's Kiyomizu-dera first. This way, you can avoid the busiest times and enjoy the cooler morning weather.

Mid-August can be even crowded during the 4-day Obon public holiday (Aug 13-16, 2026). Train tickets quickly sell out during this period, as many Japanese back to their hometowns. But big cities like Tokyo and Osaka have become quieter than usual.

Prices will increase this month, mainly because hotel rates go up 30-40%. Family or triple rooms also get booked up quickly. It's best to book your Japan trip 3-6 months ahead. This lets you secure hotels at better prices and have more room options.

Planning Your Japan Trip Now!

Not sure where to begin planning your trip? No worries! Our expert Japan travel advisors are here to help you customize your trip based on your preferences. We'll also keep an eye on your trip until you finish it smoothly. Feel free to contact us.

For more Japan tour ideas, you can check out our handpicked tours.

• 9-Day Japan Highlights Tour Including Hakone Leisure
• 14-Day Japan Family Adventure - Off the Beaten Path

Monthly Weather and Travel Information for Japan

Learn about the weather in Japan for 12 months and find out the best places to visit each month.

• Japan in January
• Japan in February
• Japan in March
• Japan in April
• Japan in May
• Japan in June
• Japan in July
• Japan in August
• Japan in September
• Japan in October
• Japan in November
• Japan in December