Average annual temperature is 13.2 °C
Absolute maximum temperature: 34.4 °C
Absolute minimum temperature: -16.6 °C
Number of sunny days: 188 days
Number of rainy days: 171 days
Number of snow days: 6 days
Look at detailed online map of Nacheon
* Weather data for Nacheon 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) | 13.9 | 12.9 | 23.9 | 26.4 | 32.6 | 33.0 | 34.1 | 34.4 | 29.8 | 21.7 | 23.7 | 16.3 |
| Average daytime temperature (°C) | 3.2 | 7.5 | 16.6 | 18.3 | 23.5 | 28.3 | 29.6 | 30.3 | 25.7 | 19.1 | 11.3 | 5.3 |
| Average temperature (°C) | -1.2 | 2.0 | 9.8 | 12.5 | 18.0 | 22.6 | 25.3 | 26.0 | 21.7 | 13.9 | 6.3 | 1.2 |
| Average night temperature (°C) | -5.1 | -2.1 | 3.8 | 7.3 | 13.1 | 17.9 | 22.0 | 22.6 | 18.5 | 9.7 | 1.6 | -2.3 |
| Absolute minimum temperature (°C) | -16.6 | -7.0 | -4.0 | 0.7 | 3.8 | 14.4 | 18.1 | 19.5 | 13.6 | 4.4 | -7.7 | -12.8 |
| 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 | 10.9 | 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 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.4 | 7.5 | 9.2 | 8.2 | 8.8 | 9.8 | 7.9 | 9.7 | 7.5 | 8.6 | 8.0 | 6.7 |
| Precipitation (mm) | 26 | 12 | 64 | 63 | 171 | 257 | 350 | 226 | 201 | 8 | 37 | 81 |
| Sunny days | 23 | 20 | 22 | 15 | 19 | 9 | 3 | 6 | 8 | 23 | 18 | 22 |
| Rainy days | 5 | 7 | 9 | 15 | 12 | 21 | 28 | 25 | 22 | 8 | 11 | 8 |
| Snow days | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The largest precipitation sum in Nacheon is at