Average annual temperature is 14.0 °C
Absolute maximum temperature: 35.6 °C
Absolute minimum temperature: -15.7 °C
Number of sunny days: 190 days
Number of rainy days: 166 days
Number of snow days: 9 days
Look at detailed online map of Idu
* Weather data for Idu 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) | 13.2 | 13.8 | 24.2 | 26.3 | 33.5 | 34.7 | 34.6 | 35.6 | 30.7 | 22.8 | 25.5 | 17.0 |
| Average daytime temperature (°C) | 4.1 | 8.4 | 17.4 | 19.5 | 24.8 | 29.4 | 30.2 | 31.2 | 26.9 | 20.3 | 12.0 | 6.0 |
| Average temperature (°C) | -0.7 | 2.6 | 10.3 | 13.2 | 19.0 | 23.7 | 25.9 | 26.8 | 22.7 | 15.0 | 7.1 | 1.8 |
| Average night temperature (°C) | -4.8 | -2.0 | 4.0 | 7.5 | 13.5 | 18.8 | 22.7 | 23.4 | 19.2 | 10.4 | 2.5 | -1.8 |
| Absolute minimum temperature (°C) | -15.7 | -6.1 | -3.3 | 1.4 | 4.5 | 15.5 | 18.9 | 19.6 | 14.7 | 5.7 | -6.8 | -12.2 |
| 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 | 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 | 10.3 | 9.7 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.4 | 7.5 | 8.9 | 8.1 | 8.4 | 9.8 | 7.2 | 9.4 | 7.5 | 8.7 | 7.9 | 6.5 |
| Precipitation (mm) | 31 | 10 | 51 | 49 | 138 | 248 | 422 | 325 | 229 | 11 | 49 | 86 |
| Sunny days | 21 | 20 | 23 | 14 | 19 | 7 | 3 | 8 | 9 | 24 | 20 | 22 |
| Rainy days | 6 | 6 | 8 | 16 | 12 | 23 | 28 | 23 | 21 | 7 | 10 | 6 |
| Snow days | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
The largest precipitation sum in Idu is at