Average annual temperature is 15.2 °C
Absolute maximum temperature: 37.1 °C
Absolute minimum temperature: -5.0 °C
Number of sunny days: 109 days
Number of rainy days: 235 days
Number of snow days: 21 days
Look at detailed online map of Itoigawa Shi
* Weather data for Itoigawa Shi 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) | 14.6 | 12.3 | 21.8 | 21.8 | 27.0 | 29.4 | 32.9 | 37.1 | 33.0 | 26.1 | 25.5 | 19.2 |
| Average daytime temperature (°C) | 5.5 | 5.8 | 12.1 | 16.4 | 20.4 | 24.7 | 29.6 | 32.9 | 28.7 | 20.6 | 15.8 | 10.4 |
| Average temperature (°C) | 2.9 | 3.3 | 7.6 | 12.2 | 16.5 | 21.6 | 26.5 | 29.7 | 25.7 | 16.8 | 12.4 | 6.9 |
| Average night temperature (°C) | 1.0 | 1.3 | 4.2 | 8.6 | 13.0 | 18.7 | 23.3 | 26.6 | 23.1 | 13.8 | 9.3 | 3.6 |
| Absolute minimum temperature (°C) | -5.0 | -1.7 | -1.8 | 3.1 | 6.0 | 13.8 | 18.8 | 24.5 | 17.3 | 9.7 | 2.4 | -1.9 |
| 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 | 13.1 | 14.1 | 14.7 | 14.4 | 13.5 | 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) | 4.6 | 4.9 | 7.8 | 8.0 | 8.7 | 7.9 | 9.8 | 11.4 | 8.2 | 8.4 | 5.9 | 4.8 |
| Precipitation (mm) | 582 | 377 | 175 | 161 | 224 | 239 | 137 | 14 | 211 | 253 | 316 | 397 |
| Sunny days | 2 | 5 | 15 | 12 | 14 | 4 | 13 | 11 | 6 | 10 | 11 | 6 |
| Rainy days | 18 | 14 | 16 | 18 | 17 | 26 | 18 | 20 | 24 | 21 | 19 | 24 |
| Snow days | 11 | 9 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The best time to visit Itoigawa Shi during the most sunny months:
The largest precipitation sum in Itoigawa Shi is at