Average annual temperature is 16.4 °C
Absolute maximum temperature: 38.0 °C
Absolute minimum temperature: -5.2 °C
Number of sunny days: 165 days
Number of rainy days: 200 days
Look at detailed online map of Jōsō
* Weather data for Jōsō 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) | 13.7 | 17.7 | 24.3 | 26.5 | 33.3 | 31.8 | 38.0 | 36.8 | 36.2 | 27.5 | 24.8 | 20.0 |
| Average daytime temperature (°C) | 8.8 | 10.9 | 17.1 | 20.2 | 23.0 | 26.9 | 33.1 | 33.4 | 30.3 | 22.4 | 17.9 | 13.1 |
| Average temperature (°C) | 3.8 | 5.5 | 11.7 | 15.1 | 17.9 | 22.3 | 27.7 | 28.6 | 26.0 | 17.4 | 12.8 | 7.6 |
| Average night temperature (°C) | 0.0 | 0.8 | 7.3 | 10.8 | 13.7 | 18.8 | 23.7 | 25.2 | 22.8 | 13.1 | 8.8 | 3.4 |
| Absolute minimum temperature (°C) | -5.2 | -3.5 | 0.4 | 3.2 | 6.9 | 13.8 | 21.0 | 23.7 | 16.7 | 8.0 | 3.4 | -2.4 |
| 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 | 14.3 | 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) | 7.3 | 7.8 | 7.8 | 8.7 | 8.9 | 7.5 | 10.6 | 11.2 | 9.0 | 8.3 | 7.0 | 7.5 |
| Precipitation (mm) | 25 | 38 | 116 | 91 | 155 | 321 | 40 | 97 | 209 | 135 | 54 | 28 |
| Sunny days | 21 | 16 | 14 | 16 | 14 | 6 | 14 | 6 | 6 | 17 | 15 | 20 |
| Rainy days | 10 | 12 | 17 | 14 | 17 | 24 | 17 | 25 | 24 | 14 | 15 | 11 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Jōsō during the most sunny months:
The largest precipitation sum in Jōsō is at