Climate averages 1991–2020
Ŭllyul weather
in December.
A cold, fairly dry month: the 11th warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cold month in Ŭllyul: daytime highs average 3.1°C and nights cool to about -3.6°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 22 mm of rain on roughly 5 days, which makes December a fairly dry month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 32 min on an average December day.
The nearest other city in this atlas is Kwail-ŭp (17 km away). In December its highs average 3.5°C, about as warm as Ŭllyul, with 27 mm of rain.
Among the 38 cities listed in North Korea, Ŭllyul ranks joint 6th of 38 for the warmest December highs and joint 14th of 38 for the driest December (rainfall, lowest first). The mean December high of those 38 cities is 1.3°C; Ŭllyul is 1.8°C warmer than that mean.
From December to January, average highs fall by 2.5°C to 0.6°C, and monthly precipitation falls from 22 mm to 14 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
Ŭllyul climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 0.6°C-6.1°C | -6.1°C | 14 | 3.4 | 9.810 h |
| February | 3.2°C-4.5°C | -4.5°C | 18 | 3.7 | 10.711 h |
| March | 8.6°C-0.5°C | -0.5°C | 24 | 4.2 | 11.912 h |
| April | 15.5°C5.5°C | 5.5°C | 46 | 6.1 | 13.213 h |
| May | 21.2°C11.2°C | 11.2°C | 83 | 7.3 | 14.214 h |
| June | 25.8°C16.8°C | 16.8°C | 91 | 8.6 | 14.815 h |
| July | 28.0°C21.3°C | 21.3°C | 227 | 14.6 | 14.615 h |
| August | 28.2°C21.7°C | 21.7°C | 195 | 13.6 | 13.714 h |
| September | 24.3°C16.4°C | 16.4°C | 86 | 6.6 | 12.512 h |
| October | 18.1°C9.5°C | 9.5°C | 40 | 5.8 | 11.211 h |
| November | 10.1°C2.5°C | 2.5°C | 43 | 7.1 | 10.110 h |
| December, selected | 3.1°C-3.6°C | -3.6°C | 22 | 5.3 | 9.510 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
- Kwail-ŭp in DecemberNorth Korea · 17 kmHigh 3.5°C · Low -1.7°C · 27 mm rain
- Samch’ŏn in DecemberNorth Korea · 21 kmHigh 3.0°C · Low -4.2°C · 21 mm rain
- Ŭnch’ŏn-ŭp in DecemberNorth Korea · 21 kmHigh 2.7°C · Low -4.6°C · 21 mm rain
- Chaeryŏng-ni in DecemberNorth Korea · 25 kmHigh 2.5°C · Low -4.4°C · 24 mm rain
- Namp’o in DecemberNorth Korea · 31 kmHigh 2.5°C · Low -4.8°C · 22 mm rain
- Sinch’ŏn-ŭp in DecemberNorth Korea · 31 kmHigh 2.8°C · Low -5.2°C · 20 mm rain
- Songnim-ni in DecemberNorth Korea · 48 kmHigh 2.0°C · Low -5.8°C · 22 mm precipitation
- Sariwŏn-si in DecemberNorth Korea · 49 kmHigh 2.6°C · Low -5.3°C · 20 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 Ŭllyul) is explained once on the Ŭllyul year overview and on the Sources, method and limits page.