Average annual temperature is 13.4 °C
Absolute maximum temperature: 35.5 °C
Absolute minimum temperature: -16.4 °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 Cheonan
* Weather data for Cheonan 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) | 13.3 | 11.3 | 25.4 | 26.6 | 32.8 | 35.5 | 33.5 | 34.6 | 30.6 | 22.5 | 24.4 | 18.3 |
| Average daytime temperature (°C) | 2.8 | 6.6 | 15.6 | 19.2 | 24.9 | 28.3 | 29.8 | 30.7 | 26.5 | 19.7 | 11.1 | 5.5 |
| Average temperature (°C) | -1.9 | 1.2 | 8.6 | 12.9 | 18.8 | 22.8 | 25.8 | 26.4 | 22.6 | 14.8 | 6.5 | 1.6 |
| Average night temperature (°C) | -6.8 | -2.8 | 3.3 | 7.8 | 13.6 | 18.3 | 22.9 | 23.1 | 19.4 | 10.4 | 2.1 | -2.1 |
| Absolute minimum temperature (°C) | -16.4 | -6.6 | -3.8 | 1.2 | 5.2 | 14.3 | 19.9 | 18.1 | 13.4 | 4.4 | -7.1 | -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) | 10.0 | 10.8 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 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) | 7.2 | 7.9 | 9.5 | 7.6 | 8.5 | 9.9 | 7.5 | 8.8 | 7.3 | 8.3 | 7.1 | 5.6 |
| Precipitation (mm) | 29 | 2 | 24 | 62 | 137 | 114 | 409 | 250 | 261 | 15 | 76 | 86 |
| Sunny days | 19 | 24 | 23 | 14 | 20 | 11 | 4 | 9 | 9 | 20 | 15 | 15 |
| Rainy days | 8 | 4 | 8 | 16 | 11 | 19 | 27 | 22 | 21 | 11 | 14 | 10 |
| Snow days | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 6 |
The best time to visit Cheonan during the most sunny months:
The largest precipitation sum in Cheonan is at