Average annual temperature is 14.2 °C
Absolute maximum temperature: 34.9 °C
Absolute minimum temperature: -14.6 °C
Number of sunny days: 190 days
Number of rainy days: 174 days
Number of snow days: 1 day
Look at detailed online map of Sunam
* Weather data for Sunam 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) | 16.5 | 15.0 | 25.1 | 28.5 | 32.1 | 33.4 | 34.8 | 34.9 | 29.8 | 22.7 | 25.9 | 19.4 |
| Average daytime temperature (°C) | 5.5 | 9.3 | 17.0 | 19.2 | 22.8 | 27.7 | 29.9 | 30.1 | 25.8 | 20.5 | 13.5 | 7.5 |
| Average temperature (°C) | 0.6 | 3.7 | 10.5 | 13.6 | 17.9 | 22.6 | 25.9 | 26.3 | 22.4 | 15.2 | 8.3 | 3.2 |
| Average night temperature (°C) | -3.5 | -0.6 | 5.0 | 8.4 | 13.2 | 18.6 | 22.7 | 23.3 | 19.5 | 10.4 | 3.4 | -0.7 |
| Absolute minimum temperature (°C) | -14.6 | -5.3 | -2.1 | 2.6 | 6.6 | 14.4 | 18.7 | 21.0 | 13.6 | 5.3 | -5.6 | -10.7 |
| 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) | 7.7 | 7.3 | 9.0 | 8.6 | 8.0 | 9.1 | 8.1 | 8.5 | 6.9 | 8.7 | 7.8 | 7.0 |
| Precipitation (mm) | 29 | 32 | 63 | 56 | 145 | 162 | 230 | 218 | 212 | 6 | 36 | 112 |
| Sunny days | 25 | 19 | 21 | 15 | 14 | 14 | 2 | 4 | 6 | 21 | 24 | 25 |
| Rainy days | 5 | 9 | 10 | 15 | 17 | 16 | 29 | 27 | 24 | 10 | 6 | 6 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Sunam is at