Average annual temperature is 11.0 °C
Absolute maximum temperature: 31.5 °C
Absolute minimum temperature: -18.0 °C
Number of sunny days: 175 days
Number of rainy days: 177 days
Number of snow days: 13 days
Look at detailed online map of Okchŏn
* Weather data for Okchŏn 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 | 12.7 | 19.2 | 23.4 | 27.8 | 30.0 | 31.2 | 31.5 | 27.0 | 20.3 | 22.4 | 14.7 |
| Average daytime temperature (°C) | 1.8 | 5.8 | 13.2 | 15.4 | 19.9 | 25.1 | 26.5 | 27.6 | 23.6 | 17.3 | 9.7 | 4.1 |
| Average temperature (°C) | -2.6 | 0.3 | 6.9 | 9.7 | 15.0 | 19.9 | 22.7 | 23.4 | 19.5 | 11.8 | 4.7 | -0.1 |
| Average night temperature (°C) | -6.3 | -3.4 | 1.8 | 4.6 | 10.7 | 15.5 | 19.9 | 20.3 | 16.2 | 7.4 | 0.3 | -3.5 |
| Absolute minimum temperature (°C) | -18.0 | -9.0 | -5.8 | -1.7 | 4.5 | 12.0 | 16.1 | 16.6 | 11.4 | 1.8 | -9.3 | -13.8 |
| 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 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.4 | 7.6 | 8.8 | 8.1 | 7.9 | 9.5 | 7.0 | 9.2 | 7.5 | 9.0 | 7.6 | 6.4 |
| Precipitation (mm) | 39 | 21 | 39 | 64 | 119 | 156 | 386 | 338 | 197 | 9 | 71 | 96 |
| Sunny days | 22 | 18 | 20 | 14 | 15 | 11 | 2 | 6 | 8 | 23 | 19 | 17 |
| Rainy days | 5 | 7 | 11 | 16 | 16 | 19 | 29 | 25 | 22 | 8 | 10 | 9 |
| Snow days | 4 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 |
The largest precipitation sum in Okchŏn is at