The rainy season (tsuyu) covers most of Japan from early June, with grey, humid days; Hokkaido stays fresh and Okinawa's rains end late in the month.

| City | Average high | Average low |
|---|---|---|
| Sapporo | 22°C | 13°C |
| Tokyo | 26°C | 18°C |
| Osaka | 28°C | 20°C |
| Fukuoka | 27°C | 20°C |
| Okinawa (Naha) | 30°C | 25°C |
Rounded averages from the Japan Meteorological Agency (1991–2020). Actual weather varies from year to year: check the live forecast before you go.
No rainy season: cool, fresh and green, one of the best months.
The rainy season starts in mid June; mild temperatures.
Rainy and humid, around 26°C by day; many dry hours between showers.
Rainy and humid; moss gardens and hydrangeas are at their best.
The rainy season can bring very heavy rain, especially at the end of June.
The rainy season usually ends in late June; hot, sunny beach days follow.

A compact umbrella, quick-dry clothes and shoes that can get wet.
Hydrangeas in Kamakura and Hakone, Hokkaido's early summer, and fewer tourists in many places.
Heavy rain warnings and landslide risk in Kyushu and western Japan; check the rain radar before day trips.
The rainy season (tsuyu) covers most of Japan from early June, with grey, humid days; Hokkaido stays fresh and Okinawa's rains end late in the month.
A compact umbrella, quick-dry clothes and shoes that can get wet.
On average about 26°C in the day and 18°C at night.
