- Cheongju ›
- Weather by month
Cheongju Weather by Month
Average temperatures, rainfall and humidity for Cheongju, Korea, South, month by month, built from OpenWeather’s historical records. Use it to see what a typical Cheongju month looks like before you travel — then check the live Cheongju forecast for the days ahead.
Warmest month
August
31°C average high
Coolest month
January
-7°C average low
Wettest month
July
117 mm of rain
Driest month
January
10 mm of rain
Average temperature and rainfall in Cheongju 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 | -7°C | -24°C / 14°C | 10 mm | 69% | 8 km/h |
| February | 6°C | -5°C | -16°C / 22°C | 21 mm | 65% | 9 km/h |
| March | 13°C | 1°C | -9°C / 26°C | 33 mm | 62% | 9 km/h |
| April | 19°C | 7°C | -3°C / 29°C | 47 mm | 61% | 9 km/h |
| May | 24°C | 12°C | 2°C / 33°C | 40 mm | 66% | 8 km/h |
| June | 28°C | 18°C | 10°C / 35°C | 51 mm | 71% | 7 km/h |
| July | 30°C | 23°C | 15°C / 37°C | 117 mm | 80% | 8 km/h |
| August | 31°C | 22°C | 14°C / 39°C | 88 mm | 80% | 7 km/h |
| September | 26°C | 17°C | 7°C / 34°C | 62 mm | 79% | 7 km/h |
| October | 20°C | 9°C | -2°C / 30°C | 42 mm | 75% | 7 km/h |
| November | 12°C | 2°C | -8°C / 24°C | 30 mm | 73% | 7 km/h |
| December | 4°C | -6°C | -18°C / 18°C | 18 mm | 73% | 7 km/h |
Best time to visit Cheongju
The most comfortable time to visit Cheongju 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 559 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 117 mm, roughly 12× the rainfall of the driest month (January).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Cheongju forecast for what is happening now.