Average annual temperature is 13.9 °C
Absolute maximum temperature: 33.6 °C
Absolute minimum temperature: -12.7 °C
Number of sunny days: 171 days
Number of rainy days: 188 days
Number of snow days: 6 days
Look at detailed online map of Irwon
* Weather data for Irwon 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) | 14.9 | 13.0 | 22.7 | 24.5 | 25.6 | 31.1 | 30.8 | 33.6 | 30.0 | 22.7 | 24.2 | 17.5 |
| Average daytime temperature (°C) | 5.5 | 8.6 | 15.7 | 17.4 | 21.0 | 25.7 | 27.3 | 29.4 | 26.2 | 20.0 | 12.6 | 7.7 |
| Average temperature (°C) | 1.2 | 3.2 | 9.6 | 12.6 | 17.1 | 21.5 | 24.5 | 25.9 | 22.7 | 15.4 | 8.5 | 3.9 |
| Average night temperature (°C) | -2.7 | -0.6 | 5.0 | 8.4 | 13.7 | 18.3 | 22.3 | 23.0 | 19.7 | 11.6 | 4.9 | 0.7 |
| Absolute minimum temperature (°C) | -12.7 | -5.0 | -2.2 | 2.7 | 7.6 | 14.7 | 18.8 | 19.0 | 15.6 | 7.0 | -3.1 | -8.2 |
| 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) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| 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) | 7.5 | 7.1 | 8.6 | 7.2 | 7.1 | 8.1 | 5.7 | 10.4 | 8.0 | 8.7 | 7.5 | 5.9 |
| Precipitation (mm) | 56 | 35 | 50 | 131 | 248 | 193 | 401 | 312 | 167 | 17 | 105 | 76 |
| Sunny days | 23 | 20 | 23 | 13 | 11 | 9 | 1 | 5 | 8 | 21 | 21 | 16 |
| Rainy days | 6 | 8 | 8 | 17 | 20 | 21 | 30 | 26 | 22 | 10 | 9 | 11 |
| Snow days | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 |
The best time to visit Irwon during the most sunny months:
The largest precipitation sum in Irwon is at