Average annual temperature is 11.6 °C
Absolute maximum temperature: 33.4 °C
Absolute minimum temperature: -10.0 °C
Number of sunny days: 118 days
Number of rainy days: 236 days
Number of snow days: 11 days
Look at detailed online map of Gero
* Weather data for Gero 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) | 11.8 | 11.2 | 19.9 | 24.8 | 28.0 | 27.4 | 32.9 | 33.4 | 30.5 | 23.2 | 20.6 | 16.4 |
| Average daytime temperature (°C) | 4.6 | 5.8 | 13.0 | 15.6 | 19.7 | 23.1 | 28.0 | 28.9 | 26.2 | 17.9 | 12.7 | 7.4 |
| Average temperature (°C) | -0.5 | 0.7 | 6.9 | 9.9 | 14.1 | 18.3 | 22.6 | 23.2 | 21.1 | 12.2 | 7.7 | 2.6 |
| Average night temperature (°C) | -4.1 | -3.3 | 1.8 | 4.9 | 9.4 | 14.3 | 18.1 | 18.8 | 17.4 | 8.2 | 3.9 | -0.9 |
| Absolute minimum temperature (°C) | -10.0 | -8.5 | -4.2 | -1.0 | 2.5 | 8.6 | 14.7 | 16.0 | 11.5 | 3.1 | -4.5 | -6.6 |
| 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 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 6.7 | 7.1 | 8.5 | 8.0 | 8.9 | 7.8 | 9.5 | 10.1 | 9.4 | 8.6 | 7.5 | 6.0 |
| Precipitation (mm) | 57 | 81 | 176 | 348 | 326 | 431 | 286 | 157 | 184 | 104 | 157 | 149 |
| Sunny days | 13 | 12 | 13 | 12 | 10 | 7 | 3 | 4 | 7 | 15 | 12 | 10 |
| Rainy days | 10 | 15 | 18 | 18 | 21 | 23 | 28 | 27 | 23 | 16 | 18 | 19 |
| Snow days | 8 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
The largest precipitation sum in Gero is at