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Wŏnsan Weather by Month
Average temperatures, rainfall and humidity for Wŏnsan, Korea, North, month by month, built from OpenWeather's historical records. Use it to see what a typical Wŏnsan month looks like before you travel — then check the live Wŏnsan forecast for the days ahead.
Warmest month
August
26°C average high
Coolest month
January
-10°C average low
Wettest month
July
149 mm of rain
Driest month
January
1 mm of rain
Average temperature and rainfall in Wŏnsan by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 0°C | -10°C | -33°C / 11°C | 1 mm | 65% | 10 km/h |
| February | 2°C | -8°C | -28°C / 15°C | 6 mm | 65% | 9 km/h |
| March | 8°C | -1°C | -18°C / 21°C | 52 mm | 65% | 8 km/h |
| April | 14°C | 5°C | -9°C / 28°C | 45 mm | 63% | 9 km/h |
| May | 21°C | 11°C | 0°C / 33°C | 50 mm | 68% | 8 km/h |
| June | 24°C | 16°C | 5°C / 36°C | 73 mm | 78% | 6 km/h |
| July | 26°C | 20°C | 10°C / 34°C | 149 mm | 86% | 6 km/h |
| August | 26°C | 20°C | 7°C / 37°C | 117 mm | 85% | 6 km/h |
| September | 22°C | 14°C | 2°C / 31°C | 72 mm | 81% | 6 km/h |
| October | 16°C | 7°C | -12°C / 27°C | 41 mm | 76% | 7 km/h |
| November | 9°C | 1°C | -18°C / 24°C | 35 mm | 69% | 9 km/h |
| December | 1°C | -7°C | -26°C / 24°C | 7 mm | 66% | 11 km/h |
Best time to visit Wŏnsan
The most comfortable time to visit Wŏnsan is generally May to June and September, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around July, totalling about 649 mm a year.
Travellers who prefer heat should aim for August, when highs average 26°C. July is the month to avoid if rain would spoil your plans — it averages 149 mm, roughly 124× the rainfall of January.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Wŏnsan forecast for what is happening now.