Average annual temperature is 12.8 °C
Absolute maximum temperature: 34.3 °C
Absolute minimum temperature: -15.8 °C
Number of sunny days: 187 days
Number of rainy days: 171 days
Number of snow days: 7 days
Look at detailed online map of Isilmi
* Weather data for Isilmi South Korea is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 15.8 | 14.6 | 23.3 | 26.6 | 31.7 | 34.3 | 33.6 | 33.8 | 29.3 | 22.2 | 25.9 | 17.8 |
| Average daytime temperature (°C) | 4.0 | 7.4 | 16.3 | 18.5 | 22.7 | 28.2 | 29.0 | 29.7 | 25.5 | 19.4 | 11.7 | 5.7 |
| Average temperature (°C) | -1.3 | 1.8 | 9.1 | 12.1 | 17.2 | 22.4 | 24.6 | 25.4 | 21.4 | 13.5 | 6.1 | 1.1 |
| Average night temperature (°C) | -5.3 | -2.5 | 2.8 | 6.4 | 12.1 | 17.5 | 21.2 | 21.9 | 17.7 | 8.6 | 1.3 | -2.6 |
| Absolute minimum temperature (°C) | -15.8 | -6.6 | -4.2 | 0.9 | 4.3 | 13.2 | 17.0 | 18.0 | 12.9 | 2.7 | -7.1 | -12.4 |
| 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 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.6 | 7.6 | 9.0 | 8.3 | 8.2 | 9.9 | 7.2 | 9.3 | 7.5 | 8.9 | 7.8 | 6.4 |
| Precipitation (mm) | 40 | 18 | 46 | 81 | 130 | 152 | 348 | 378 | 209 | 5 | 68 | 111 |
| Sunny days | 22 | 18 | 21 | 16 | 16 | 12 | 4 | 6 | 9 | 22 | 20 | 21 |
| Rainy days | 7 | 8 | 10 | 14 | 15 | 18 | 27 | 25 | 21 | 9 | 10 | 7 |
| Snow days | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
The largest precipitation sum in Isilmi is at