Climate averages 1991–2020
Hwaseong-si weather
in December.
A cold, fairly dry month: the 10th warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cold month in Hwaseong-si: daytime highs average 4.2°C and nights cool to about -1.6°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 28 mm of rain on roughly 6 days, which makes December a fairly dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 39 min on an average December day.
The nearest other city in this atlas is Ansan-si (13 km away). In December its highs average 4.1°C, about as warm as Hwaseong-si, with 28 mm of rain.
Among the 79 cities listed in South Korea, Hwaseong-si ranks joint 51st of 79 for the warmest December highs and joint 50th of 79 for the driest December (rainfall, lowest first). The mean December high of those 79 cities is 5.6°C; Hwaseong-si is 1.4°C cooler than that mean.
From December to January, average highs fall by 2.4°C to 1.8°C, and monthly precipitation falls from 28 mm to 22 mm.
The annual picture
December 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
Hwaseong-si climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 1.8°C-3.9°C | -3.9°C | 22 | 4.1 | 9.910 h |
| February | 3.7°C-2.5°C | -2.5°C | 30 | 4.3 | 10.811 h |
| March | 8.2°C1.4°C | 1.4°C | 42 | 6.1 | 11.912 h |
| April | 14.0°C6.6°C | 6.6°C | 79 | 7.3 | 13.113 h |
| May | 19.1°C12.0°C | 12.0°C | 104 | 7.7 | 14.114 h |
| June | 23.3°C17.1°C | 17.1°C | 127 | 7.6 | 14.715 h |
| July | 26.2°C21.6°C | 21.6°C | 298 | 14.4 | 14.514 h |
| August | 27.3°C22.8°C | 22.8°C | 239 | 12.8 | 13.614 h |
| September | 23.9°C18.4°C | 18.4°C | 127 | 7.3 | 12.512 h |
| October | 18.1°C12.0°C | 12.0°C | 62 | 5.6 | 11.311 h |
| November | 11.0°C4.9°C | 4.9°C | 57 | 8.2 | 10.210 h |
| December, selected | 4.2°C-1.6°C | -1.6°C | 28 | 5.8 | 9.710 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
December in nearby cities
- Ansan-si in DecemberSouth Korea · 13 kmHigh 4.1°C · Low -2.7°C · 28 mm rain
- Suwon in DecemberSouth Korea · 19 kmHigh 3.9°C · Low -3.9°C · 23 mm rain
- Anyang-si in DecemberSouth Korea · 23 kmHigh 3.8°C · Low -3.5°C · 23 mm rain
- Osan in DecemberSouth Korea · 23 kmHigh 4.2°C · Low -3.6°C · 23 mm rain
- Incheon in DecemberSouth Korea · 29 kmHigh 3.6°C · Low -3.5°C · 22 mm rain
- Gwangmyeong in DecemberSouth Korea · 30 kmHigh 3.7°C · Low -4.2°C · 22 mm rain
- Bucheon-si in DecemberSouth Korea · 33 kmHigh 3.8°C · Low -3.7°C · 22 mm rain
- Pyeongtaek in DecemberSouth Korea · 34 kmHigh 4.3°C · Low -3.2°C · 23 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 Hwaseong-si) is explained once on the Hwaseong-si year overview and on the Sources, method and limits page.
Ansan-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.