Average annual temperature is 12.9 °C
Absolute maximum temperature: 34.6 °C
Absolute minimum temperature: -15.9 °C
Number of sunny days: 185 days
Number of rainy days: 170 days
Number of snow days: 10 days
Look at detailed online map of Oseong
* Weather data for Oseong 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) | 12.5 | 10.7 | 25.3 | 27.6 | 30.8 | 34.6 | 33.8 | 34.4 | 30.5 | 22.5 | 23.4 | 17.5 |
| Average daytime temperature (°C) | 2.7 | 6.1 | 14.8 | 18.7 | 24.2 | 26.9 | 29.4 | 30.0 | 26.3 | 19.4 | 10.6 | 5.1 |
| Average temperature (°C) | -1.7 | 1.0 | 8.0 | 12.7 | 18.0 | 21.8 | 25.3 | 25.7 | 22.1 | 14.0 | 5.9 | 0.8 |
| Average night temperature (°C) | -6.0 | -2.8 | 2.6 | 7.9 | 13.0 | 17.9 | 22.4 | 22.3 | 18.7 | 9.4 | 1.5 | -2.8 |
| Absolute minimum temperature (°C) | -15.9 | -5.9 | -3.0 | 1.3 | 5.6 | 14.1 | 19.7 | 17.0 | 12.7 | 3.0 | -6.6 | -13.3 |
| 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) | 9.9 | 10.8 | 12.0 | 13.1 | 14.1 | 14.7 | 14.4 | 13.5 | 12.4 | 11.2 | 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) | 7.2 | 8.3 | 9.5 | 7.8 | 8.6 | 9.6 | 7.5 | 8.7 | 7.5 | 8.2 | 7.1 | 5.6 |
| Precipitation (mm) | 37 | 1 | 15 | 84 | 125 | 174 | 418 | 276 | 194 | 38 | 87 | 79 |
| Sunny days | 20 | 23 | 26 | 15 | 19 | 13 | 4 | 8 | 9 | 17 | 15 | 16 |
| Rainy days | 8 | 5 | 5 | 15 | 12 | 17 | 27 | 23 | 21 | 14 | 15 | 8 |
| Snow days | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7 |
The largest precipitation sum in Oseong is at