Average annual temperature is 14.2 °C
Absolute maximum temperature: 34.4 °C
Absolute minimum temperature: -14.5 °C
Number of sunny days: 191 days
Number of rainy days: 170 days
Number of snow days: 4 days
Look at detailed online map of Hwalseong
* Weather data for Hwalseong 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) | 16.7 | 15.1 | 25.5 | 28.7 | 32.8 | 33.9 | 34.3 | 34.4 | 29.6 | 22.8 | 26.5 | 19.3 |
| Average daytime temperature (°C) | 5.7 | 9.4 | 16.8 | 19.0 | 22.7 | 27.3 | 29.7 | 29.9 | 25.9 | 20.5 | 13.7 | 7.7 |
| Average temperature (°C) | 0.6 | 3.8 | 10.3 | 13.6 | 17.7 | 22.5 | 25.7 | 26.2 | 22.4 | 15.2 | 8.3 | 3.1 |
| Average night temperature (°C) | -3.5 | -0.6 | 5.0 | 8.6 | 13.2 | 18.6 | 22.5 | 23.3 | 19.6 | 10.7 | 3.4 | -0.7 |
| Absolute minimum temperature (°C) | -14.5 | -5.4 | -2.3 | 2.6 | 6.8 | 14.8 | 18.2 | 20.9 | 14.4 | 5.2 | -5.6 | -10.8 |
| 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) | 7.8 | 7.5 | 9.1 | 8.6 | 8.1 | 9.3 | 8.4 | 9.1 | 7.4 | 8.9 | 7.9 | 7.0 |
| Precipitation (mm) | 37 | 36 | 61 | 63 | 165 | 138 | 226 | 222 | 163 | 6 | 35 | 111 |
| Sunny days | 25 | 17 | 22 | 16 | 16 | 14 | 5 | 2 | 5 | 21 | 25 | 23 |
| Rainy days | 4 | 10 | 9 | 14 | 15 | 16 | 26 | 29 | 25 | 10 | 5 | 7 |
| Snow days | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The largest precipitation sum in Hwalseong is at