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Yeosu Weather by Month
Average temperatures, rainfall and humidity for Yeosu, Korea, South, month by month, built from OpenWeather’s historical records. Use it to see what a typical Yeosu month looks like before you travel — then check the live Yeosu forecast for the days ahead.
Warmest month
August
29°C average high
Coolest month
January
1°C average low
Wettest month
July
158 mm of rain
Driest month
January
21 mm of rain
Average temperature and rainfall in Yeosu 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 | 7°C | 1°C | -9°C / 16°C | 21 mm | 79% | 17 km/h |
| February | 8°C | 2°C | -7°C / 17°C | 50 mm | 76% | 18 km/h |
| March | 12°C | 6°C | -3°C / 20°C | 105 mm | 74% | 15 km/h |
| April | 16°C | 10°C | 3°C / 25°C | 95 mm | 73% | 15 km/h |
| May | 20°C | 14°C | 7°C / 30°C | 78 mm | 75% | 13 km/h |
| June | 24°C | 19°C | 7°C / 33°C | 108 mm | 83% | 11 km/h |
| July | 27°C | 23°C | 7°C / 36°C | 158 mm | 87% | 12 km/h |
| August | 29°C | 24°C | -3°C / 37°C | 127 mm | 85% | 12 km/h |
| September | 25°C | 20°C | -3°C / 31°C | 102 mm | 84% | 14 km/h |
| October | 20°C | 15°C | 5°C / 31°C | 50 mm | 78% | 15 km/h |
| November | 14°C | 9°C | -1°C / 31°C | 36 mm | 78% | 16 km/h |
| December | 8°C | 3°C | -6°C / 17°C | 24 mm | 80% | 17 km/h |
Best time to visit Yeosu
The most comfortable time to visit Yeosu is generally June and September to October, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around July, totalling about 956 mm a year.
Travellers who prefer heat should aim for August, when highs average 29°C. July is the month to avoid if rain would spoil your plans — it averages 158 mm, roughly 7× the rainfall of the driest month (January).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Yeosu forecast for what is happening now.