Average annual temperature is 12.9 °C
Absolute maximum temperature: 35.2 °C
Absolute minimum temperature: -16.9 °C
Number of sunny days: 195 days
Number of rainy days: 157 days
Number of snow days: 13 days
Look at detailed online map of Ansan
* Weather data for Ansan 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) | 11.4 | 10.6 | 24.9 | 27.8 | 33.4 | 35.2 | 33.7 | 35.1 | 30.5 | 22.3 | 23.7 | 17.1 |
| Average daytime temperature (°C) | 2.3 | 7.0 | 16.0 | 19.7 | 25.4 | 28.4 | 29.7 | 30.3 | 26.2 | 18.9 | 10.3 | 4.8 |
| Average temperature (°C) | -2.6 | 0.9 | 8.5 | 13.0 | 18.9 | 22.9 | 25.6 | 26.0 | 21.9 | 13.3 | 5.1 | 0.3 |
| Average night temperature (°C) | -7.1 | -3.8 | 2.0 | 7.0 | 12.9 | 17.9 | 22.3 | 22.3 | 18.4 | 8.4 | 0.4 | -3.6 |
| Absolute minimum temperature (°C) | -16.9 | -7.4 | -4.9 | -0.1 | 4.3 | 13.3 | 20.0 | 16.8 | 12.3 | 2.3 | -7.6 | -13.8 |
| 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 | 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 | 9.7 |
| 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 | 8.2 | 9.2 | 7.6 | 8.8 | 9.8 | 7.4 | 8.4 | 7.2 | 8.1 | 7.1 | 5.9 |
| Precipitation (mm) | 36 | 1 | 19 | 65 | 118 | 185 | 424 | 395 | 199 | 25 | 63 | 79 |
| Sunny days | 21 | 23 | 25 | 15 | 21 | 13 | 5 | 9 | 9 | 21 | 16 | 17 |
| Rainy days | 4 | 4 | 6 | 15 | 10 | 17 | 26 | 22 | 21 | 10 | 12 | 10 |
| Snow days | 6 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 4 |
The largest precipitation sum in Ansan is at