Climate averages 1991–2020
Ansan-si weather
in August.
A hot, very wet month: the warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Ansan-si: daytime highs average 28.0°C and nights cool to about 22.6°C. By daytime temperature it is the warmest month of the year.
Expect about 239 mm of rain on roughly 13 days, which makes August a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 36 min on an average August day.
The nearest other city in this atlas is Anyang-si (12 km away). In August its highs average 28.0°C, about as warm as Ansan-si, with 258 mm of rain.
Among the 79 cities listed in South Korea, Ansan-si ranks joint 60th of 79 for the warmest August highs and joint 52nd of 79 for the driest August (rainfall, lowest first). The mean August high of those 79 cities is 28.6°C; Ansan-si is 0.6°C cooler than that mean.
From August to September, average highs fall by 3.6°C to 24.3°C, and monthly rainfall falls from 239 mm to 127 mm.
The annual picture
August in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Ansan-si climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 1.9°C-4.9°C | -4.9°C | 22 | 4.1 | 9.910 h |
| February | 4.3°C-3.3°C | -3.3°C | 30 | 4.3 | 10.811 h |
| March | 9.2°C0.7°C | 0.7°C | 42 | 6.1 | 11.912 h |
| April | 15.3°C6.2°C | 6.2°C | 79 | 7.3 | 13.113 h |
| May | 20.5°C11.9°C | 11.9°C | 104 | 7.7 | 14.214 h |
| June | 24.8°C17.2°C | 17.2°C | 127 | 7.6 | 14.715 h |
| July | 27.1°C21.6°C | 21.6°C | 298 | 14.4 | 14.514 h |
| August, selected | 28.0°C22.6°C | 22.6°C | 239 | 12.8 | 13.614 h |
| September | 24.3°C17.8°C | 17.8°C | 127 | 7.3 | 12.512 h |
| October | 18.5°C10.9°C | 10.9°C | 62 | 5.6 | 11.311 h |
| November | 11.1°C3.7°C | 3.7°C | 57 | 8.2 | 10.210 h |
| December | 4.1°C-2.7°C | -2.7°C | 28 | 5.8 | 9.610 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Anyang-si in AugustSouth Korea · 12 kmHigh 28.0°C · Low 22.3°C · 258 mm rain
- Hwaseong-si in AugustSouth Korea · 13 kmHigh 27.3°C · Low 22.8°C · 239 mm rain
- Suwon in AugustSouth Korea · 17 kmHigh 28.4°C · Low 22.1°C · 231 mm rain
- Gwangmyeong in AugustSouth Korea · 18 kmHigh 28.4°C · Low 22.3°C · 244 mm rain
- Incheon in AugustSouth Korea · 18 kmHigh 27.6°C · Low 22.6°C · 244 mm rain
- Bucheon-si in AugustSouth Korea · 20 kmHigh 28.0°C · Low 22.5°C · 244 mm rain
- Osan in AugustSouth Korea · 29 kmHigh 28.8°C · Low 22.3°C · 231 mm rain
- Seoul in AugustSouth Korea · 30 kmHigh 28.6°C · Low 22.0°C · 258 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Ansan-si) is explained once on the Ansan-si year overview and on the Sources, method and limits page.
Hwaseong-si lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.