August is typically the hottest and most humid month with a real risk of typhoons affecting travel in late summer. Many Japanese travel during Obon, which can create local crowds and fully booked transport.
Average daily low and high (°C) and monthly rainfall. The badge shows how it feels, allowing for humidity.
Average temperature across Japan in August.
Sapporo, Niseko, Furano, Asahikawa
August stays warm but rarely oppressively humid; coastal sea breezes cool Hakodate and the Sea of Okhotsk. Late-summer is festival time-local matsuri and seafood markets are lively-but hikers should watch for thunderstorms in the mountains and occasional ferry cancellations in rough seas. Peak wildflower displays in high meadows make alpine walking especially rewarding.
Aomori, Akita, Sendai, Niigata, Kanazawa
August brings festival energy-Aomori’s Nebuta and Sendai’s Tanabata preparations fill the calendar-and warm humid days across the region. The Sea-of-Japan coast is popular for seafood and beaches, but late-summer typhoons can arrive and disrupt ferries. Expect busy domestic travel around Obon (mid-August) with packed trains and hostels, so book ahead.
Tokyo, Yokohama, Kamakura, Mt. Fuji approaches
August is peak heat and typhoon season begins to feel relevant-hot, sticky conditions with occasional heavy rains from passing typhoons or tropical storms. Travel plans can be affected by cancellations so keep flexible bookings. Nighttime street festivals offer respite and energy, but indoor air-conditioned spaces become vital for daytime recovery.
Nagano, Matsumoto, Takayama, Kamikochi, Mt. Fuji approaches
August is peak hiking season: long daylight, wildflowers in bloom, and stable weather in many ranges-though afternoon thunderstorms can appear suddenly. Towns like Takayama fill with festival visitors in early August; early booking for huts and ryokan is wise. Cooler nights make for comfortable sleeping even after hot daytime treks.
Kyoto, Osaka, Nara, Hiroshima, Okayama, Takamatsu
August is the hottest month and the heart of Obon travel; expect busy transport as locals return to family hometowns and coastal beaches are crowded. Typhoon season can bring rough weather and ferry cancellations, especially later in the month. Early morning temple visits beat the heat and crowds, and evening riverbank festivals provide respite.
Fukuoka, Nagasaki, Kumamoto, Kagoshima, Yakushima, Okinawa main and outlying islands
August is hot and humid with frequent heatwaves on Kyushu and high ocean temperatures ideal for swimming but with the highest typhoon risk of the year. Yakushima’s interior remains wet and overgrown; ferries may be cancelled during storms. Okinawa faces its most active typhoon period-watch forecasts closely, expect occasional evacuation advisories, and keep travel plans flexible.
Mid-August Obon holidays lead to increased domestic travel and family gatherings (dates center on mid-August).
See how August compares with the rest of the year, then read the full guide.