Climate averages 1991–2020
Ungsang weather
in December.
A cold, fairly dry month: the 11th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cold month in Ungsang: daytime highs average 7.8°C and nights cool to about 0.9°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 27 mm of rain on roughly 4 days, which makes December a fairly dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 9 h 49 min on an average December day.
The nearest other city in this atlas is Yangsan (14 km away). In December its highs average 8.4°C, 0.5°C warmer than Ungsang, with 28 mm of rain.
Among the 79 cities listed in South Korea, Ungsang ranks joint 14th of 79 for the warmest December highs and joint 47th of 79 for the driest December (rainfall, lowest first). The mean December high of those 79 cities is 5.6°C; Ungsang is 2.2°C warmer than that mean.
From December to January, average highs fall by 2.0°C to 5.9°C, and monthly rainfall rises from 27 mm to 31 mm.
The annual picture
December in context
Monthly rainfall
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
Ungsang climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 5.9°C-0.9°C | -0.9°C | 31 | 4.4 | 10.110 h |
| February | 7.9°C0.3°C | 0.3°C | 39 | 5.1 | 10.911 h |
| March | 11.9°C3.7°C | 3.7°C | 71 | 7.4 | 11.912 h |
| April | 16.8°C8.3°C | 8.3°C | 92 | 7.5 | 13.113 h |
| May | 21.0°C13.1°C | 13.1°C | 100 | 7.8 | 14.014 h |
| June | 24.0°C17.6°C | 17.6°C | 143 | 9.1 | 14.515 h |
| July | 26.9°C22.1°C | 22.1°C | 216 | 13.3 | 14.314 h |
| August | 27.9°C23.3°C | 23.3°C | 213 | 14.1 | 13.513 h |
| September | 24.3°C19.3°C | 19.3°C | 173 | 10.4 | 12.412 h |
| October | 19.8°C13.4°C | 13.4°C | 73 | 5.1 | 11.311 h |
| November | 14.0°C6.8°C | 6.8°C | 48 | 4.9 | 10.310 h |
| December, selected | 7.8°C0.9°C | 0.9°C | 27 | 3.6 | 9.810 h |
Rainfall is the average of the 30 separate monthly totals. A rain 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
- Yangsan in DecemberSouth Korea · 14 kmHigh 8.4°C · Low 0.4°C · 28 mm rain
- Gijang in DecemberSouth Korea · 18 kmHigh 8.5°C · Low 2.7°C · 33 mm rain
- Ulsan in DecemberSouth Korea · 20 kmHigh 8.0°C · Low 0.8°C · 27 mm rain
- Kimhae in DecemberSouth Korea · 32 kmHigh 8.4°C · Low 0.9°C · 28 mm rain
- Busan in DecemberSouth Korea · 36 kmHigh 8.6°C · Low 2.4°C · 33 mm rain
- Changwon in DecemberSouth Korea · 48 kmHigh 8.1°C · Low 0.3°C · 26 mm rain
- Gyeongju in DecemberSouth Korea · 49 kmHigh 7.3°C · Low -1.2°C · 25 mm rain
- Gyeongsan-si in DecemberSouth Korea · 61 kmHigh 6.8°C · Low -1.6°C · 22 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 Ungsang) is explained once on the Ungsang year overview and on the Sources, method and limits page.
Ulsan lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.