The rainy season ends in mid to late July and real summer begins: hot, humid and full of festivals, with heatstroke alerts and the first typhoons.

| City | Average high | Average low |
|---|---|---|
| Sapporo | 25°C | 17°C |
| Tokyo | 30°C | 22°C |
| Osaka | 32°C | 24°C |
| Fukuoka | 31°C | 25°C |
| Okinawa (Naha) | 32°C | 27°C |
Rounded averages from the Japan Meteorological Agency (1991–2020). Actual weather varies from year to year: check the live forecast before you go.
Warm and pleasant, around 25°C; lavender in Furano.
Warm; the rainy season ends in late July.
Around 30°C and humid after the rainy season ends; fireworks festivals start.
Hot, often 32°C or more; the Gion Matsuri in Kyoto and Tenjin Matsuri in Osaka.
Hot and humid; the Hakata Gion Yamakasa festival in early July.
Hot and sunny, around 32°C; peak typhoon risk begins.

Light, breathable clothes, a hat, sunscreen, a water bottle and a small towel.
Gion Matsuri, Mount Fuji climbing season (from early July), fireworks, beaches and cool Hokkaido.
Heatstroke: drink often and rest in the shade or indoors at midday. Typhoons can disrupt flights and trains.
The rainy season ends in mid to late July and real summer begins: hot, humid and full of festivals, with heatstroke alerts and the first typhoons.
Light, breathable clothes, a hat, sunscreen, a water bottle and a small towel.
On average about 30°C in the day and 22°C at night.
