Average annual temperature is 14.9 °C
Absolute maximum temperature: 34.5 °C
Absolute minimum temperature: -11.3 °C
Number of sunny days: 188 days
Number of rainy days: 173 days
Number of snow days: 4 days
Look at detailed online map of Chŏngnam
* Weather data for Chŏngnam 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) | 15.6 | 13.1 | 23.1 | 24.5 | 24.7 | 29.4 | 33.5 | 34.5 | 30.2 | 24.8 | 25.4 | 19.0 |
| Average daytime temperature (°C) | 6.6 | 9.9 | 15.7 | 17.7 | 21.0 | 25.1 | 28.1 | 30.4 | 27.0 | 21.8 | 14.8 | 9.3 |
| Average temperature (°C) | 1.9 | 4.8 | 10.5 | 13.6 | 17.5 | 21.7 | 25.0 | 27.1 | 23.6 | 16.9 | 9.9 | 4.9 |
| Average night temperature (°C) | -2.2 | 0.8 | 6.4 | 10.1 | 14.8 | 19.2 | 22.9 | 24.6 | 20.9 | 12.6 | 5.8 | 1.2 |
| Absolute minimum temperature (°C) | -11.3 | -3.5 | -1.9 | 3.5 | 9.5 | 16.0 | 20.4 | 22.5 | 16.5 | 8.4 | -2.4 | -7.1 |
| 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) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.2 | 13.4 | 12.4 | 11.3 | 10.3 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 7.6 | 7.6 | 8.8 | 7.9 | 7.6 | 8.2 | 7.0 | 9.6 | 7.3 | 8.6 | 8.2 | 7.2 |
| Precipitation (mm) | 58 | 40 | 61 | 103 | 259 | 234 | 336 | 280 | 242 | 11 | 35 | 88 |
| Sunny days | 25 | 19 | 20 | 14 | 13 | 8 | 6 | 6 | 10 | 24 | 23 | 20 |
| Rainy days | 5 | 9 | 11 | 16 | 18 | 22 | 25 | 25 | 20 | 7 | 7 | 8 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
The largest precipitation sum in Chŏngnam is at