Average annual temperature is 14.7 °C
Absolute maximum temperature: 37.5 °C
Absolute minimum temperature: -5.0 °C
Number of sunny days: 102 days
Number of rainy days: 258 days
Number of snow days: 5 days
Look at detailed online map of Jōetsu
* Weather data for Jōetsu 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) | 14.0 | 14.4 | 22.4 | 24.1 | 25.7 | 28.6 | 32.9 | 37.5 | 34.7 | 25.9 | 25.7 | 18.3 |
| Average daytime temperature (°C) | 6.0 | 6.1 | 13.0 | 16.0 | 19.9 | 24.3 | 29.2 | 33.8 | 29.1 | 20.6 | 15.8 | 9.9 |
| Average temperature (°C) | 3.0 | 2.9 | 8.0 | 11.5 | 15.8 | 20.8 | 25.5 | 29.3 | 25.0 | 16.0 | 11.5 | 5.9 |
| Average night temperature (°C) | 0.9 | 0.5 | 3.8 | 7.6 | 12.0 | 17.8 | 22.0 | 25.0 | 21.7 | 12.3 | 8.1 | 2.3 |
| Absolute minimum temperature (°C) | -4.9 | -4.1 | -0.9 | 3.1 | 4.8 | 12.1 | 17.3 | 23.2 | 15.9 | 8.4 | 2.3 | -5.0 |
| 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) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.4 | 13.6 | 12.4 | 11.2 | 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) | 4.8 | 5.5 | 7.8 | 8.0 | 8.6 | 7.8 | 9.5 | 11.5 | 8.0 | 8.3 | 6.3 | 4.4 |
| Precipitation (mm) | 377 | 211 | 118 | 112 | 196 | 247 | 102 | 16 | 209 | 256 | 240 | 381 |
| Sunny days | 3 | 6 | 12 | 10 | 12 | 6 | 13 | 17 | 5 | 6 | 8 | 4 |
| Rainy days | 26 | 19 | 19 | 20 | 19 | 24 | 18 | 14 | 25 | 25 | 22 | 27 |
| Snow days | 2 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Jōetsu during the most sunny months:
The largest precipitation sum in Jōetsu is at