Average annual temperature is 15.2 °C
Absolute maximum temperature: 36.2 °C
Absolute minimum temperature: -8.2 °C
Number of sunny days: 122 days
Number of rainy days: 237 days
Number of snow days: 6 days
Look at detailed online map of Gejō Gawa
* Weather data for Gejō Gawa 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 | 16.2 | 22.4 | 25.7 | 27.6 | 31.7 | 33.8 | 36.2 | 34.4 | 25.8 | 26.2 | 18.8 |
| Average daytime temperature (°C) | 7.3 | 8.3 | 13.8 | 16.5 | 21.0 | 25.2 | 29.5 | 33.1 | 29.6 | 20.9 | 16.1 | 10.1 |
| Average temperature (°C) | 3.3 | 3.9 | 8.8 | 12.3 | 16.4 | 21.3 | 26.1 | 29.4 | 25.5 | 15.8 | 11.8 | 6.4 |
| Average night temperature (°C) | -0.2 | 0.4 | 4.1 | 7.8 | 12.2 | 17.6 | 22.5 | 25.7 | 22.2 | 11.8 | 8.3 | 2.8 |
| Absolute minimum temperature (°C) | -8.2 | -3.6 | -2.0 | 1.9 | 4.9 | 11.9 | 17.8 | 23.7 | 17.1 | 7.0 | 2.1 | -4.2 |
| 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 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.8 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 10.2 | 9.7 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.3 | 5.8 | 7.8 | 7.8 | 8.6 | 8.1 | 9.5 | 11.1 | 8.1 | 8.2 | 6.1 | 4.3 |
| Precipitation (mm) | 155 | 127 | 121 | 153 | 230 | 304 | 152 | 77 | 168 | 144 | 196 | 209 |
| Sunny days | 3 | 10 | 17 | 15 | 15 | 10 | 12 | 12 | 4 | 10 | 8 | 6 |
| Rainy days | 24 | 16 | 14 | 15 | 16 | 20 | 19 | 19 | 26 | 21 | 22 | 25 |
| Snow days | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Gejō Gawa during the most sunny months:
The largest precipitation sum in Gejō Gawa is at