Average annual temperature is 11.5 °C
Absolute maximum temperature: 34.0 °C
Absolute minimum temperature: -20.1 °C
Number of sunny days: 176 days
Number of rainy days: 175 days
Number of snow days: 14 days
Look at detailed online map of Irwondong
* Weather data for Irwondong 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) | 10.7 | 10.0 | 21.9 | 24.3 | 28.6 | 33.6 | 33.1 | 34.0 | 31.2 | 22.0 | 22.2 | 13.8 |
| Average daytime temperature (°C) | 0.1 | 5.4 | 13.8 | 16.9 | 22.7 | 26.6 | 29.5 | 29.1 | 26.1 | 18.7 | 8.3 | 2.4 |
| Average temperature (°C) | -5.0 | -0.2 | 6.7 | 10.9 | 17.0 | 21.3 | 25.0 | 24.8 | 21.2 | 13.0 | 3.6 | -1.6 |
| Average night temperature (°C) | -10.1 | -4.0 | 1.2 | 6.1 | 12.0 | 16.8 | 21.7 | 21.3 | 17.4 | 8.5 | -0.3 | -5.1 |
| Absolute minimum temperature (°C) | -20.1 | -7.8 | -5.3 | -0.9 | 5.1 | 12.6 | 19.3 | 16.2 | 9.2 | 2.9 | -8.7 | -17.1 |
| 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 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 9.6 |
| 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) | 7.0 | 8.4 | 9.4 | 7.2 | 9.2 | 9.5 | 8.2 | 7.8 | 7.7 | 8.1 | 6.5 | 6.1 |
| Precipitation (mm) | 52 | 2 | 14 | 116 | 152 | 194 | 274 | 287 | 135 | 34 | 97 | 74 |
| Sunny days | 21 | 25 | 24 | 11 | 17 | 8 | 7 | 2 | 10 | 18 | 15 | 18 |
| Rainy days | 3 | 1 | 7 | 19 | 14 | 22 | 24 | 29 | 20 | 13 | 13 | 10 |
| Snow days | 7 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 3 |
The largest precipitation sum in Irwondong is at