Average annual temperature is 17.2 °C
Absolute maximum temperature: 33.7 °C
Absolute minimum temperature: -2.7 °C
Number of sunny days: 147 days
Number of rainy days: 216 days
Number of snow days: 2 days
Look at detailed online map of Isaki
* Weather data for Isaki 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) | 18.5 | 16.7 | 22.7 | 24.7 | 27.2 | 29.4 | 32.1 | 33.7 | 31.6 | 26.4 | 26.2 | 21.8 |
| Average daytime temperature (°C) | 9.5 | 10.5 | 15.9 | 18.8 | 22.3 | 25.3 | 29.9 | 30.8 | 29.6 | 22.4 | 17.8 | 12.3 |
| Average temperature (°C) | 7.0 | 7.5 | 12.0 | 15.1 | 18.7 | 22.3 | 26.9 | 27.6 | 26.0 | 18.8 | 14.3 | 9.4 |
| Average night temperature (°C) | 4.7 | 4.5 | 8.3 | 11.7 | 15.6 | 19.6 | 24.1 | 25.0 | 23.1 | 15.8 | 11.1 | 6.7 |
| Absolute minimum temperature (°C) | -2.7 | -0.3 | 3.0 | 7.4 | 10.1 | 15.1 | 19.9 | 23.3 | 19.5 | 10.4 | 5.6 | 1.1 |
| 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 | 14.3 | 14.1 | 13.4 | 12.4 | 11.3 | 10.4 | 10.0 |
| 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) | 7.0 | 7.3 | 8.9 | 8.3 | 9.1 | 6.8 | 10.2 | 10.6 | 9.8 | 9.0 | 7.9 | 6.8 |
| Precipitation (mm) | 81 | 68 | 101 | 245 | 251 | 303 | 97 | 148 | 57 | 33 | 78 | 80 |
| Sunny days | 12 | 14 | 19 | 18 | 18 | 11 | 6 | 2 | 7 | 19 | 13 | 8 |
| Rainy days | 18 | 14 | 12 | 12 | 13 | 19 | 25 | 29 | 23 | 12 | 17 | 22 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The largest precipitation sum in Isaki is at