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Masan Weather by Month
Average temperatures, rainfall and humidity for Masan, South Korea, month by month, built from OpenWeather’s historical records. Use it to see what a typical Masan month looks like before you travel — then check the live Masan forecast for the days ahead.
Warmest month
August
32°C average high
Coolest month
January
-5°C average low
Wettest month
August
92 mm of rain
Driest month
December
13 mm of rain
Average temperature and rainfall in Masan 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 | -5°C | -17°C / 18°C | 14 mm | 56% | 9 km/h |
| February | 9°C | -2°C | -12°C / 22°C | 26 mm | 56% | 9 km/h |
| March | 15°C | 3°C | -7°C / 27°C | 50 mm | 59% | 8 km/h |
| April | 20°C | 8°C | -1°C / 30°C | 72 mm | 61% | 8 km/h |
| May | 25°C | 13°C | 2°C / 35°C | 56 mm | 63% | 7 km/h |
| June | 28°C | 18°C | 7°C / 37°C | 74 mm | 71% | 7 km/h |
| July | 30°C | 23°C | 3°C / 38°C | 89 mm | 78% | 8 km/h |
| August | 32°C | 23°C | 13°C / 38°C | 92 mm | 76% | 7 km/h |
| September | 27°C | 18°C | 8°C / 38°C | 76 mm | 76% | 7 km/h |
| October | 22°C | 11°C | -1°C / 31°C | 49 mm | 70% | 8 km/h |
| November | 15°C | 4°C | -8°C / 26°C | 25 mm | 64% | 8 km/h |
| December | 8°C | -3°C | -14°C / 18°C | 13 mm | 59% | 8 km/h |
Best time to visit Masan
The most comfortable time to visit Masan is generally May 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 August, totalling about 637 mm a year.
Travellers who prefer heat should aim for August, when highs average 32°C. August is the month to avoid if rain would spoil your plans — it averages 92 mm, roughly 7× the rainfall of the driest month (December).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Masan forecast for what is happening now.
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