Average annual temperature is 12.7 °C
Absolute maximum temperature: 35.4 °C
Absolute minimum temperature: -17.7 °C
Number of sunny days: 172 days
Number of rainy days: 181 days
Number of snow days: 12 days
Look at detailed online map of Opyeong
* Weather data for Opyeong 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) | 11.9 | 10.4 | 24.5 | 26.8 | 31.0 | 35.4 | 33.3 | 33.9 | 30.6 | 21.9 | 23.0 | 16.1 |
| Average daytime temperature (°C) | 2.1 | 6.2 | 15.0 | 18.3 | 24.0 | 27.0 | 29.0 | 29.6 | 26.0 | 18.7 | 9.8 | 4.4 |
| Average temperature (°C) | -2.4 | 0.9 | 8.2 | 12.4 | 18.0 | 22.0 | 25.3 | 25.7 | 22.1 | 14.1 | 5.2 | 0.5 |
| Average night temperature (°C) | -6.7 | -2.9 | 2.9 | 7.5 | 13.1 | 17.8 | 22.5 | 22.6 | 18.7 | 9.7 | 0.9 | -3.1 |
| Absolute minimum temperature (°C) | -17.7 | -6.7 | -3.8 | 1.0 | 5.1 | 13.3 | 20.6 | 18.3 | 12.9 | 4.0 | -7.8 | -14.6 |
| 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 | 13.2 | 14.2 | 14.7 | 14.4 | 13.6 | 12.4 | 11.2 | 10.2 | 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) | 7.1 | 8.3 | 9.3 | 7.9 | 8.7 | 9.4 | 7.4 | 8.4 | 7.3 | 8.2 | 7.1 | 6.0 |
| Precipitation (mm) | 37 | 1 | 15 | 102 | 128 | 224 | 423 | 297 | 202 | 46 | 146 | 80 |
| Sunny days | 19 | 24 | 24 | 11 | 19 | 7 | 6 | 6 | 7 | 18 | 15 | 16 |
| Rainy days | 7 | 3 | 7 | 19 | 12 | 23 | 25 | 25 | 23 | 13 | 13 | 11 |
| Snow days | 5 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 4 |
The largest precipitation sum in Opyeong is at