Average annual temperature is 11.6 °C
Absolute maximum temperature: 33.3 °C
Absolute minimum temperature: -17.8 °C
Number of sunny days: 191 days
Number of rainy days: 168 days
Number of snow days: 6 days
Look at detailed online map of Ilmosil
* Weather data for Ilmosil 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) | 12.2 | 11.0 | 21.1 | 24.0 | 30.1 | 31.2 | 32.3 | 33.3 | 27.5 | 20.6 | 21.7 | 14.5 |
| Average daytime temperature (°C) | 1.9 | 5.8 | 13.9 | 15.7 | 20.8 | 25.5 | 27.6 | 28.0 | 23.5 | 17.6 | 9.7 | 3.9 |
| Average temperature (°C) | -2.4 | 0.7 | 7.7 | 10.7 | 16.0 | 20.5 | 23.7 | 24.2 | 19.9 | 12.5 | 5.0 | -0.2 |
| Average night temperature (°C) | -6.2 | -3.2 | 2.7 | 6.1 | 11.7 | 16.5 | 20.8 | 21.2 | 16.9 | 8.4 | 0.8 | -3.5 |
| Absolute minimum temperature (°C) | -17.8 | -8.5 | -5.7 | -0.7 | 2.5 | 11.9 | 16.4 | 17.9 | 11.0 | 2.4 | -8.9 | -14.3 |
| 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) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 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) | 7.6 | 7.5 | 9.2 | 8.8 | 9.0 | 10.1 | 8.3 | 9.7 | 7.3 | 8.7 | 7.9 | 7.1 |
| Precipitation (mm) | 34 | 14 | 60 | 65 | 172 | 224 | 308 | 250 | 260 | 12 | 48 | 136 |
| Sunny days | 25 | 19 | 24 | 15 | 15 | 8 | 2 | 6 | 10 | 24 | 21 | 22 |
| Rainy days | 4 | 7 | 7 | 15 | 16 | 22 | 29 | 25 | 20 | 7 | 8 | 8 |
| Snow days | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The largest precipitation sum in Ilmosil is at