Average annual temperature is 14.3 °C
Absolute maximum temperature: 34.1 °C
Absolute minimum temperature: -12.1 °C
Number of sunny days: 167 days
Number of rainy days: 182 days
Number of snow days: 16 days
Look at detailed online map of Ongnyeon
* Weather data for Ongnyeon 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) | 15.9 | 12.2 | 23.0 | 24.5 | 28.5 | 33.7 | 31.8 | 34.1 | 30.2 | 23.0 | 24.5 | 18.7 |
| Average daytime temperature (°C) | 5.7 | 7.8 | 15.7 | 18.7 | 23.0 | 27.5 | 28.8 | 30.6 | 27.1 | 20.5 | 13.3 | 7.9 |
| Average temperature (°C) | 1.1 | 2.7 | 9.0 | 13.0 | 18.0 | 22.5 | 25.6 | 26.5 | 23.0 | 15.6 | 9.1 | 4.2 |
| Average night temperature (°C) | -3.2 | -1.2 | 4.0 | 8.4 | 13.9 | 19.0 | 23.2 | 23.2 | 19.8 | 11.5 | 4.9 | 0.7 |
| Absolute minimum temperature (°C) | -12.1 | -4.9 | -3.8 | 2.1 | 6.8 | 15.3 | 20.1 | 19.4 | 15.4 | 7.5 | -2.1 | -10.5 |
| 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) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 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) | 6.8 | 7.2 | 8.7 | 7.4 | 7.7 | 8.6 | 6.3 | 9.7 | 8.1 | 8.1 | 6.8 | 5.0 |
| Precipitation (mm) | 45 | 24 | 65 | 110 | 191 | 190 | 513 | 222 | 190 | 19 | 87 | 89 |
| Sunny days | 18 | 23 | 23 | 13 | 13 | 16 | 2 | 2 | 8 | 22 | 18 | 9 |
| Rainy days | 7 | 5 | 8 | 17 | 18 | 14 | 29 | 29 | 22 | 9 | 11 | 13 |
| Snow days | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 9 |
The best time to visit Ongnyeon during the most sunny months:
The largest precipitation sum in Ongnyeon is at