Average annual temperature is 14.3 °C
Absolute maximum temperature: 33.6 °C
Absolute minimum temperature: -8.5 °C
Number of sunny days: 149 days
Number of rainy days: 207 days
Number of snow days: 9 days
Look at detailed online map of Sera-chō
* Weather data for Sera-chō 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) | 14.3 | 14.1 | 20.1 | 24.1 | 28.0 | 29.0 | 32.9 | 33.6 | 31.7 | 23.8 | 24.0 | 18.7 |
| Average daytime temperature (°C) | 6.6 | 7.8 | 14.8 | 17.3 | 21.6 | 24.7 | 29.0 | 30.2 | 27.8 | 20.0 | 14.8 | 9.0 |
| Average temperature (°C) | 2.6 | 3.5 | 9.5 | 12.2 | 16.7 | 20.5 | 25.2 | 25.9 | 23.5 | 15.3 | 10.8 | 5.5 |
| Average night temperature (°C) | -0.4 | 0.1 | 5.2 | 8.3 | 12.9 | 17.2 | 22.0 | 22.8 | 20.5 | 11.8 | 7.6 | 2.6 |
| Absolute minimum temperature (°C) | -8.5 | -4.6 | -2.6 | 3.1 | 7.1 | 11.6 | 18.8 | 20.9 | 17.3 | 7.6 | 1.3 | -3.8 |
| 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) | 6.7 | 6.4 | 8.2 | 7.9 | 8.9 | 7.5 | 9.3 | 9.6 | 8.9 | 8.5 | 7.7 | 6.6 |
| Precipitation (mm) | 41 | 57 | 80 | 216 | 226 | 195 | 108 | 189 | 66 | 29 | 40 | 43 |
| Sunny days | 13 | 12 | 19 | 16 | 14 | 11 | 10 | 2 | 1 | 18 | 17 | 16 |
| Rainy days | 11 | 15 | 12 | 14 | 17 | 19 | 21 | 29 | 29 | 13 | 13 | 14 |
| Snow days | 7 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The largest precipitation sum in Sera-chō is at