Average annual temperature is 15.9 °C
Absolute maximum temperature: 40.3 °C
Absolute minimum temperature: -6.5 °C
Number of sunny days: 181 days
Number of rainy days: 177 days
Number of snow days: 7 days
Look at detailed online map of Ōtemachi
* Weather data for Ōtemachi 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) | 14.5 | 17.6 | 23.6 | 30.2 | 34.3 | 32.7 | 40.3 | 38.5 | 33.4 | 27.5 | 27.5 | 20.0 |
| Average daytime temperature (°C) | 8.7 | 10.5 | 17.3 | 21.5 | 24.0 | 26.5 | 33.3 | 32.8 | 29.4 | 22.2 | 17.1 | 12.3 |
| Average temperature (°C) | 3.1 | 4.9 | 11.5 | 15.0 | 18.2 | 22.2 | 27.7 | 27.8 | 25.2 | 16.6 | 11.3 | 6.3 |
| Average night temperature (°C) | -1.1 | 0.4 | 6.2 | 9.2 | 13.0 | 18.5 | 23.0 | 24.2 | 21.9 | 11.7 | 6.7 | 2.0 |
| Absolute minimum temperature (°C) | -6.5 | -3.9 | -1.1 | 2.6 | 5.4 | 12.0 | 20.3 | 22.0 | 16.1 | 7.4 | 0.0 | -3.4 |
| 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 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 10.3 | 9.7 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.5 | 8.1 | 8.4 | 9.2 | 9.1 | 8.0 | 9.8 | 10.1 | 8.7 | 8.9 | 8.0 | 7.7 |
| Precipitation (mm) | 14 | 36 | 81 | 69 | 147 | 276 | 117 | 213 | 186 | 78 | 58 | 23 |
| Sunny days | 17 | 16 | 18 | 18 | 16 | 12 | 11 | 4 | 6 | 19 | 22 | 22 |
| Rainy days | 10 | 9 | 13 | 12 | 15 | 18 | 20 | 27 | 24 | 12 | 8 | 9 |
| Snow days | 4 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Ōtemachi is at