Asan weather by month
Warmest month
August
31°C average high
Coolest month
January
-6°C average low
Wettest month
July
134 mm of rain
Driest month
January
7 mm of rain
Average temperature and rainfall in Asan 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 | 4°C | -6°C | -20°C / 14°C | 7 mm | 69% | 8 km/h |
| February | 6°C | -4°C | -15°C / 16°C | 20 mm | 65% | 9 km/h |
| March | 13°C | 1°C | -9°C / 25°C | 30 mm | 66% | 9 km/h |
| April | 19°C | 7°C | -1°C / 27°C | 43 mm | 62% | 8 km/h |
| May | 24°C | 12°C | 2°C / 30°C | 45 mm | 66% | 8 km/h |
| June | 28°C | 17°C | 11°C / 33°C | 58 mm | 70% | 8 km/h |
| July | 30°C | 22°C | 18°C / 36°C | 134 mm | 81% | 7 km/h |
| August | 31°C | 23°C | 16°C / 38°C | 97 mm | 79% | 6 km/h |
| September | 26°C | 17°C | 11°C / 34°C | 58 mm | 79% | 8 km/h |
| October | 20°C | 10°C | 2°C / 29°C | 52 mm | 76% | 7 km/h |
| November | 13°C | 3°C | -5°C / 23°C | 29 mm | 72% | 7 km/h |
| December | 4°C | -4°C | -14°C / 13°C | 15 mm | 71% | 8 km/h |
Frost and snow-likely months in Asan
Nights in Asan average 2°C or below in 4 months (January, February, March and December). February and December combine average lows at or below 0°C with 10 mm or more of monthly precipitation, so precipitation then is likely to fall as snow. The coldest month is January with an average low of -6°C and a record low of -20°C.
- January: average low -6°C, record low -20°C, 7 mm of precipitation
- February: average low -4°C, record low -15°C, 20 mm of precipitation — snow-likely
- March: average low 1°C, record low -9°C, 30 mm of precipitation
- December: average low -4°C, record low -14°C, 15 mm of precipitation — snow-likely
These records carry temperature and precipitation, not snowfall totals.
Best time to visit Asan
The most comfortable time to visit Asan 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 587 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 134 mm, roughly 18× the rainfall of the driest month (January).
Asan climate: your questions
Does it snow in Asan?
Yes, in winter: February and December average lows at or below 0°C with 10 mm or more of monthly precipitation, so some of it falls as snow. The coldest month is January (average low -6°C, record low -20°C). Our records carry temperature and precipitation, not snowfall totals. What is falling now: Asan weather today.
Will Asan get snow this year?
Asan's winter months average lows of -4°C in December, -6°C in January and -4°C in February, with about 42 mm of precipitation across the three; 3 of them sit at or below 0°C, so snow is likely on the colder days. The records hold no snowfall totals. The next 15 days: Asan 10-day forecast.
When is the best time to visit Asan?
May to June and September are the most comfortable months in Asan, with highs near 26°C. August is the warmest month, averaging 31°C by day; July is the wettest, with 134 mm; and January is the coolest, with lows near -6°C. What it is doing today: Asan weather today.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Asan forecast for what is happening now.
