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Ch’ŏnan Weather by Month
Average temperatures, rainfall and humidity for Ch’ŏnan, Korea, South, month by month, built from OpenWeather's historical records. Use it to see what a typical Ch’ŏnan month looks like before you travel — then check the live Ch’ŏnan forecast for the days ahead.
Warmest month
August
31°C average high
Coolest month
January
-8°C average low
Wettest month
July
126 mm of rain
Driest month
January
10 mm of rain
Average temperature and rainfall in Ch’ŏnan 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 | 3°C | -8°C | -21°C / 13°C | 10 mm | 67% | 8 km/h |
| February | 6°C | -5°C | -16°C / 21°C | 23 mm | 65% | 9 km/h |
| March | 13°C | 1°C | -8°C / 28°C | 37 mm | 62% | 9 km/h |
| April | 19°C | 7°C | -3°C / 29°C | 50 mm | 61% | 9 km/h |
| May | 24°C | 12°C | 4°C / 33°C | 42 mm | 66% | 9 km/h |
| June | 28°C | 18°C | 11°C / 35°C | 51 mm | 72% | 8 km/h |
| July | 30°C | 23°C | 14°C / 37°C | 126 mm | 80% | 8 km/h |
| August | 31°C | 23°C | 14°C / 38°C | 97 mm | 81% | 7 km/h |
| September | 27°C | 17°C | 8°C / 35°C | 68 mm | 78% | 7 km/h |
| October | 20°C | 9°C | -3°C / 29°C | 46 mm | 74% | 8 km/h |
| November | 13°C | 2°C | -8°C / 26°C | 32 mm | 70% | 8 km/h |
| December | 4°C | -5°C | -19°C / 19°C | 21 mm | 71% | 8 km/h |
Best time to visit Ch’ŏnan
The most comfortable time to visit Ch’ŏnan 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 July, totalling about 601 mm a year.
Travellers who prefer heat should aim for August, when highs average 31°C. July is the month to avoid if rain would spoil your plans — it averages 126 mm, roughly 13× the rainfall of January.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Ch’ŏnan forecast for what is happening now.