Average annual temperature is 14.7 °C
Absolute maximum temperature: 34.2 °C
Absolute minimum temperature: -13.6 °C
Number of sunny days: 191 days
Number of rainy days: 171 days
Number of snow days: 3 days
Look at detailed online map of Suryŏm
* Weather data for Suryŏm 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) | 17.0 | 15.4 | 25.4 | 28.7 | 32.1 | 33.0 | 33.8 | 34.2 | 29.8 | 23.9 | 27.3 | 20.2 |
| Average daytime temperature (°C) | 6.5 | 9.9 | 16.6 | 18.9 | 22.3 | 26.8 | 29.7 | 29.9 | 26.4 | 21.2 | 14.5 | 8.5 |
| Average temperature (°C) | 1.3 | 4.6 | 10.7 | 14.0 | 17.9 | 22.5 | 26.0 | 26.6 | 23.1 | 15.9 | 8.9 | 4.0 |
| Average night temperature (°C) | -2.7 | 0.3 | 5.6 | 9.3 | 13.7 | 18.9 | 22.8 | 23.8 | 20.5 | 11.5 | 4.0 | 0.3 |
| Absolute minimum temperature (°C) | -13.6 | -4.5 | -1.6 | 3.4 | 6.7 | 15.5 | 18.9 | 21.4 | 15.3 | 6.5 | -4.8 | -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) | 7.8 | 7.4 | 9.2 | 8.6 | 8.2 | 9.2 | 8.4 | 9.4 | 7.8 | 8.9 | 8.0 | 7.1 |
| Precipitation (mm) | 48 | 41 | 65 | 68 | 199 | 145 | 226 | 216 | 161 | 3 | 32 | 98 |
| Sunny days | 24 | 18 | 21 | 17 | 15 | 12 | 7 | 3 | 6 | 23 | 24 | 21 |
| Rainy days | 5 | 10 | 10 | 13 | 16 | 18 | 24 | 28 | 24 | 8 | 6 | 9 |
| Snow days | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The largest precipitation sum in Suryŏm is at