Average annual temperature is 13.8 °C
Absolute maximum temperature: 35.6 °C
Absolute minimum temperature: -13.8 °C
Number of sunny days: 183 days
Number of rainy days: 171 days
Number of snow days: 11 days
Look at detailed online map of Gilsan
* Weather data for Gilsan 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) | 14.5 | 11.6 | 25.7 | 26.1 | 28.5 | 33.9 | 32.6 | 35.6 | 31.0 | 23.1 | 23.5 | 18.3 |
| Average daytime temperature (°C) | 4.5 | 7.5 | 15.3 | 18.7 | 23.5 | 26.9 | 28.8 | 30.8 | 26.9 | 20.2 | 12.5 | 7.0 |
| Average temperature (°C) | -0.3 | 1.8 | 8.7 | 13.1 | 18.2 | 22.2 | 25.5 | 26.6 | 22.8 | 15.0 | 8.0 | 3.0 |
| Average night temperature (°C) | -4.8 | -2.3 | 3.5 | 8.4 | 14.1 | 18.8 | 23.0 | 23.4 | 19.7 | 10.5 | 3.7 | -0.4 |
| Absolute minimum temperature (°C) | -13.8 | -5.7 | -4.2 | 1.9 | 6.7 | 15.8 | 20.5 | 18.6 | 14.3 | 4.3 | -4.2 | -11.0 |
| 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 | 14.6 | 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 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.3 | 7.8 | 9.1 | 7.9 | 8.3 | 9.9 | 7.1 | 9.2 | 7.3 | 8.2 | 6.9 | 5.3 |
| Precipitation (mm) | 32 | 4 | 26 | 83 | 168 | 248 | 640 | 263 | 267 | 16 | 93 | 130 |
| Sunny days | 19 | 24 | 24 | 16 | 15 | 13 | 4 | 6 | 11 | 23 | 14 | 14 |
| Rainy days | 9 | 3 | 7 | 14 | 16 | 17 | 27 | 25 | 19 | 8 | 15 | 11 |
| Snow days | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 6 |
The best time to visit Gilsan during the most sunny months:
The largest precipitation sum in Gilsan is at