Climate averages 1991–2020
Geoje weather
in December.
A cool, fairly dry month: the 10th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Geoje: daytime highs average 9.0°C and nights cool to about 4.5°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 39 mm of rain on roughly 5 days, which makes December a fairly dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 9 h 52 min on an average December day.
The nearest other city in this atlas is Sinhyeon (10 km away). In December its highs average 8.8°C, about as warm as Geoje, with 34 mm of rain.
Among the 79 cities listed in South Korea, Geoje ranks 3rd of 79 for the warmest December highs and joint 76th of 79 for the driest December (rainfall, lowest first). The mean December high of those 79 cities is 5.6°C; Geoje is 3.4°C warmer than that mean.
From December to January, average highs fall by 2.2°C to 6.8°C, and monthly rainfall rises from 39 mm to 42 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
Geoje climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 6.8°C2.4°C | 2.4°C | 42 | 5.2 | 10.110 h |
| February | 8.2°C3.5°C | 3.5°C | 51 | 5.7 | 10.911 h |
| March | 11.2°C6.9°C | 6.9°C | 97 | 8.3 | 11.912 h |
| April | 14.7°C11.1°C | 11.1°C | 127 | 8.5 | 13.013 h |
| May | 18.1°C15.2°C | 15.2°C | 132 | 8.0 | 14.014 h |
| June | 21.2°C18.9°C | 18.9°C | 180 | 9.6 | 14.414 h |
| July | 24.9°C22.8°C | 22.8°C | 240 | 11.8 | 14.214 h |
| August | 26.8°C24.6°C | 24.6°C | 187 | 11.6 | 13.513 h |
| September | 24.1°C21.3°C | 21.3°C | 173 | 9.0 | 12.412 h |
| October | 19.8°C16.3°C | 16.3°C | 78 | 5.2 | 11.311 h |
| November | 14.5°C10.4°C | 10.4°C | 58 | 6.0 | 10.410 h |
| December, selected | 9.0°C4.5°C | 4.5°C | 39 | 4.8 | 9.910 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
- Sinhyeon in DecemberSouth Korea · 10 kmHigh 8.8°C · Low 3.9°C · 34 mm rain
- Tongyeong in DecemberSouth Korea · 26 kmHigh 8.2°C · Low 2.2°C · 37 mm rain
- Busan in DecemberSouth Korea · 44 kmHigh 8.6°C · Low 2.4°C · 33 mm rain
- Changwon in DecemberSouth Korea · 46 kmHigh 8.1°C · Low 0.3°C · 26 mm rain
- Kimhae in DecemberSouth Korea · 49 kmHigh 8.4°C · Low 0.9°C · 28 mm rain
- Naesŏ in DecemberSouth Korea · 51 kmHigh 7.9°C · Low -0.4°C · 25 mm rain
- Yangsan in DecemberSouth Korea · 66 kmHigh 8.4°C · Low 0.4°C · 28 mm rain
- Gijang in DecemberSouth Korea · 67 kmHigh 8.5°C · Low 2.7°C · 33 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 Geoje) is explained once on the Geoje year overview and on the Sources, method and limits page.