Average annual temperature is 14.0 °C
Absolute maximum temperature: 35.5 °C
Absolute minimum temperature: -15.2 °C
Number of sunny days: 203 days
Number of rainy days: 155 days
Number of snow days: 7 days
Look at detailed online map of Ian
* Weather data for Ian 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 | 14.5 | 24.6 | 26.9 | 32.8 | 34.6 | 34.5 | 35.5 | 30.5 | 23.1 | 25.5 | 17.8 |
| Average daytime temperature (°C) | 4.0 | 8.4 | 17.2 | 19.7 | 24.8 | 29.0 | 30.4 | 31.2 | 27.0 | 20.5 | 12.1 | 5.8 |
| Average temperature (°C) | -0.6 | 2.8 | 10.2 | 13.3 | 19.1 | 23.6 | 26.0 | 26.8 | 22.7 | 14.8 | 7.0 | 1.7 |
| Average night temperature (°C) | -4.6 | -1.3 | 4.0 | 7.7 | 13.7 | 19.1 | 22.6 | 23.3 | 19.4 | 10.1 | 2.3 | -2.1 |
| Absolute minimum temperature (°C) | -15.2 | -5.8 | -2.3 | 2.2 | 5.6 | 15.5 | 18.3 | 18.4 | 13.7 | 4.8 | -6.9 | -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 | 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) | 7.5 | 7.8 | 9.1 | 8.0 | 8.4 | 10.0 | 7.4 | 9.0 | 7.6 | 8.8 | 7.6 | 6.3 |
| Precipitation (mm) | 36 | 11 | 37 | 54 | 150 | 228 | 442 | 325 | 273 | 8 | 51 | 108 |
| Sunny days | 24 | 21 | 23 | 19 | 18 | 8 | 4 | 10 | 12 | 25 | 19 | 20 |
| Rainy days | 5 | 5 | 8 | 11 | 13 | 22 | 27 | 21 | 18 | 6 | 11 | 8 |
| Snow days | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
The largest precipitation sum in Ian is at