Average annual temperature is 17.2 °C
Absolute maximum temperature: 34.0 °C
Absolute minimum temperature: -2.3 °C
Number of sunny days: 159 days
Number of rainy days: 204 days
Number of snow days: 2 days
Look at detailed online map of Toshima
* Weather data for Toshima Japan is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 16.8 | 13.5 | 20.3 | 21.6 | 25.3 | 29.4 | 33.9 | 34.0 | 33.9 | 26.4 | 24.4 | 21.3 |
| Average daytime temperature (°C) | 9.2 | 9.4 | 15.3 | 18.1 | 21.8 | 24.8 | 30.1 | 31.6 | 29.9 | 22.4 | 17.3 | 12.2 |
| Average temperature (°C) | 6.7 | 6.5 | 11.5 | 14.7 | 18.5 | 22.0 | 26.8 | 28.5 | 26.8 | 19.4 | 14.8 | 10.0 |
| Average night temperature (°C) | 4.1 | 3.8 | 8.1 | 11.7 | 15.8 | 19.6 | 24.3 | 26.0 | 24.6 | 16.9 | 12.4 | 7.6 |
| Absolute minimum temperature (°C) | -2.3 | 0.7 | 4.0 | 7.1 | 11.0 | 14.7 | 21.7 | 24.0 | 22.2 | 13.3 | 6.7 | 2.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 7.3 | 6.8 | 8.8 | 8.1 | 9.4 | 7.0 | 10.3 | 10.2 | 10.1 | 8.7 | 7.6 | 7.3 |
| Precipitation (mm) | 54 | 51 | 98 | 163 | 222 | 343 | 78 | 170 | 60 | 35 | 122 | 35 |
| Sunny days | 10 | 11 | 19 | 12 | 16 | 11 | 16 | 7 | 10 | 16 | 16 | 15 |
| Rainy days | 20 | 17 | 12 | 18 | 15 | 19 | 15 | 24 | 20 | 15 | 14 | 15 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The largest precipitation sum in Toshima is at