Average annual temperature is 13.9 °C
Absolute maximum temperature: 34.6 °C
Absolute minimum temperature: -8.2 °C
Number of sunny days: 165 days
Number of rainy days: 197 days
Number of snow days: 3 days
Look at detailed online map of Ōbiso
* Weather data for Ōbiso 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) | 15.9 | 15.9 | 22.5 | 25.7 | 30.6 | 29.8 | 34.6 | 32.0 | 32.4 | 26.2 | 24.0 | 18.2 |
| Average daytime temperature (°C) | 7.6 | 9.0 | 15.8 | 18.1 | 21.5 | 24.8 | 29.6 | 28.5 | 27.9 | 20.5 | 15.7 | 10.8 |
| Average temperature (°C) | 2.3 | 3.9 | 9.2 | 12.3 | 16.1 | 20.0 | 24.4 | 24.3 | 22.9 | 14.8 | 10.1 | 5.5 |
| Average night temperature (°C) | -1.8 | -0.2 | 4.0 | 7.3 | 11.4 | 15.8 | 20.5 | 21.5 | 19.5 | 10.5 | 5.7 | 1.7 |
| Absolute minimum temperature (°C) | -8.2 | -4.4 | -3.0 | 0.6 | 3.8 | 10.1 | 16.7 | 19.0 | 16.1 | 5.0 | -0.9 | -3.6 |
| 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) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 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) | 7.7 | 7.4 | 8.4 | 8.3 | 8.4 | 6.7 | 9.8 | 8.1 | 9.2 | 8.9 | 7.8 | 7.5 |
| Precipitation (mm) | 74 | 61 | 173 | 245 | 232 | 465 | 75 | 433 | 97 | 104 | 123 | 83 |
| Sunny days | 19 | 17 | 14 | 15 | 14 | 10 | 5 | 0 | 11 | 23 | 16 | 21 |
| Rainy days | 10 | 10 | 17 | 15 | 17 | 20 | 26 | 31 | 19 | 8 | 14 | 10 |
| Snow days | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Ōbiso is at