Average annual temperature is 16.1 °C
Absolute maximum temperature: 35.9 °C
Absolute minimum temperature: -5.5 °C
Number of sunny days: 137 days
Number of rainy days: 223 days
Number of snow days: 5 days
Look at detailed online map of Isa
* Weather data for Isa 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) | 16.4 | 16.5 | 22.1 | 25.6 | 28.4 | 29.0 | 34.9 | 35.9 | 33.5 | 26.4 | 25.2 | 22.2 |
| Average daytime temperature (°C) | 8.6 | 10.7 | 16.1 | 18.7 | 22.7 | 26.0 | 30.8 | 32.2 | 29.3 | 21.8 | 16.8 | 11.4 |
| Average temperature (°C) | 5.1 | 6.4 | 10.9 | 14.0 | 18.0 | 21.9 | 26.5 | 27.6 | 24.7 | 17.2 | 12.4 | 7.4 |
| Average night temperature (°C) | 2.4 | 3.2 | 7.0 | 10.4 | 14.5 | 19.0 | 23.4 | 24.6 | 22.0 | 13.7 | 8.8 | 4.4 |
| Absolute minimum temperature (°C) | -5.5 | -1.3 | -1.3 | 6.4 | 8.2 | 14.1 | 19.6 | 22.8 | 18.3 | 7.8 | 3.4 | -1.5 |
| 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 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 6.4 | 6.3 | 8.1 | 8.0 | 8.6 | 7.4 | 9.5 | 10.5 | 8.8 | 8.4 | 7.7 | 5.9 |
| Precipitation (mm) | 83 | 115 | 89 | 192 | 219 | 274 | 279 | 165 | 139 | 28 | 64 | 62 |
| Sunny days | 13 | 10 | 14 | 16 | 13 | 7 | 4 | 3 | 8 | 19 | 15 | 15 |
| Rainy days | 15 | 17 | 17 | 14 | 18 | 23 | 27 | 28 | 22 | 12 | 15 | 15 |
| Snow days | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The best time to visit Isa during the most sunny months:
The largest precipitation sum in Isa is at