Average annual temperature is 19.0 °C
Absolute maximum temperature: 31.5 °C
Absolute minimum temperature: -0.4 °C
Number of sunny days: 168 days
Number of rainy days: 197 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) | 19.2 | 18.9 | 20.9 | 20.2 | 22.5 | 26.9 | 28.9 | 31.5 | 30.5 | 27.1 | 25.3 | 22.2 |
| Average daytime temperature (°C) | 11.8 | 13.2 | 16.9 | 18.5 | 20.4 | 23.9 | 27.2 | 28.5 | 28.0 | 23.0 | 19.1 | 14.3 |
| Average temperature (°C) | 9.9 | 11.0 | 15.3 | 17.3 | 19.4 | 22.8 | 26.4 | 27.4 | 26.8 | 21.1 | 17.1 | 12.4 |
| Average night temperature (°C) | 7.9 | 8.6 | 13.3 | 15.8 | 18.3 | 21.9 | 25.5 | 26.0 | 25.2 | 19.3 | 14.9 | 10.5 |
| Absolute minimum temperature (°C) | -0.4 | 3.7 | 5.8 | 12.5 | 15.1 | 18.0 | 22.6 | 24.2 | 22.6 | 15.5 | 9.1 | 2.9 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.3 | 11.0 | 12.0 | 13.0 | 13.8 | 14.3 | 14.1 | 13.3 | 12.4 | 11.4 | 10.5 | 10.0 |
| Daylight minimum duration (h) | 10.0 | 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) | 7.3 | 7.0 | 8.1 | 8.2 | 9.4 | 6.7 | 10.7 | 10.2 | 10.3 | 8.9 | 8.4 | 7.3 |
| Precipitation (mm) | 103 | 77 | 187 | 163 | 175 | 370 | 93 | 431 | 139 | 38 | 65 | 85 |
| Sunny days | 19 | 14 | 18 | 17 | 15 | 10 | 9 | 4 | 6 | 22 | 19 | 15 |
| Rainy days | 12 | 14 | 13 | 13 | 16 | 20 | 22 | 27 | 24 | 9 | 11 | 16 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Isa during the most sunny months:
The largest precipitation sum in Isa is at