Average annual temperature is 12.7 °C
Absolute maximum temperature: 33.4 °C
Absolute minimum temperature: -14.0 °C
Number of sunny days: 178 days
Number of rainy days: 182 days
Number of snow days: 5 days
Look at detailed online map of Simwŏn
* Weather data for Simwŏn 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) | 14.2 | 12.6 | 22.1 | 25.5 | 27.5 | 29.8 | 31.4 | 33.4 | 30.2 | 22.7 | 24.5 | 16.3 |
| Average daytime temperature (°C) | 4.5 | 8.0 | 15.3 | 16.8 | 20.7 | 25.5 | 26.7 | 29.0 | 25.6 | 19.3 | 11.9 | 6.5 |
| Average temperature (°C) | -0.5 | 2.2 | 8.9 | 11.5 | 16.1 | 20.7 | 23.5 | 24.8 | 21.4 | 13.9 | 7.0 | 2.2 |
| Average night temperature (°C) | -4.2 | -2.0 | 4.0 | 6.6 | 12.1 | 17.1 | 21.2 | 21.5 | 18.0 | 9.5 | 3.1 | -1.2 |
| Absolute minimum temperature (°C) | -14.0 | -7.2 | -4.0 | 0.1 | 1.8 | 14.3 | 18.4 | 18.9 | 13.7 | 4.6 | -5.6 | -10.0 |
| 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) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 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 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.5 | 7.4 | 8.6 | 7.6 | 7.6 | 8.9 | 6.0 | 9.9 | 7.8 | 8.5 | 7.9 | 6.4 |
| Precipitation (mm) | 68 | 28 | 60 | 145 | 249 | 333 | 528 | 334 | 221 | 8 | 104 | 91 |
| Sunny days | 23 | 20 | 21 | 13 | 10 | 10 | 2 | 5 | 10 | 25 | 22 | 17 |
| Rainy days | 6 | 8 | 10 | 17 | 21 | 20 | 29 | 26 | 20 | 6 | 8 | 11 |
| Snow days | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
The best time to visit Simwŏn during the most sunny months:
The largest precipitation sum in Simwŏn is at