Climate averages 1991–2020
Hyesan weather
in December.
A freezing month with light precipitation: the 11th warmest and the joint 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a freezing month in Hyesan: daytime highs average -6.0°C and nights cool to about -18.0°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 18 mm of precipitation on roughly 5 days, which makes December a month with light precipitation (the joint 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 15 min on an average December day.
The nearest other city in this atlas is Changam-ch’on (102 km away). In December its highs average 0.9°C, 6.9°C warmer than Hyesan, with 32 mm of precipitation.
Among the 38 cities listed in North Korea, Hyesan ranks 38th of 38 for the warmest December highs and 2nd of 38 for the driest December (precipitation, lowest first). The mean December high of those 38 cities is 1.3°C; Hyesan is 7.3°C cooler than that mean.
From December to January, average highs fall by 2.0°C to -8.0°C, and monthly precipitation falls from 18 mm to 10 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
Hyesan climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -8.0°C-20.9°C | -20.9°C | 10 | 3.1 | 9.610 h |
| February | -4.2°C-17.6°C | -17.6°C | 18 | 4.6 | 10.611 h |
| March | 2.3°C-9.2°C | -9.2°C | 33 | 7.9 | 11.912 h |
| April | 11.0°C-0.4°C | -0.4°C | 56 | 10.5 | 13.313 h |
| May | 18.0°C5.5°C | 5.5°C | 95 | 14.9 | 14.514 h |
| June | 22.3°C11.2°C | 11.2°C | 97 | 15.5 | 15.115 h |
| July | 24.9°C15.4°C | 15.4°C | 164 | 17.3 | 14.815 h |
| August | 24.4°C15.1°C | 15.1°C | 136 | 14.2 | 13.814 h |
| September | 19.7°C8.8°C | 8.8°C | 70 | 7.9 | 12.513 h |
| October | 12.1°C1.3°C | 1.3°C | 43 | 7.6 | 11.111 h |
| November | 2.5°C-7.5°C | -7.5°C | 38 | 7.7 | 9.910 h |
| December, selected | -6.0°C-18.0°C | -18.0°C | 18 | 5.2 | 9.29 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
- Changam-ch’on in DecemberNorth Korea · 102 kmHigh 0.9°C · Low -9.4°C · 32 mm precipitation
- Hwasŏng in DecemberNorth Korea · 111 kmHigh -0.7°C · Low -9.2°C · 40 mm precipitation
- Myŏnggan-dong in DecemberNorth Korea · 114 kmHigh -0.9°C · Low -9.2°C · 40 mm precipitation
- Ŏrang in DecemberNorth Korea · 123 kmHigh -0.1°C · Low -6.7°C · 62 mm precipitation
- Chongjin in DecemberNorth Korea · 140 kmHigh -1.1°C · Low -8.2°C · 58 mm precipitation
- Kanggye in DecemberNorth Korea · 142 kmHigh -3.7°C · Low -16.4°C · 26 mm precipitation
- Helong in DecemberChina · 144 kmHigh -5.2°C · Low -16.2°C · 11 mm precipitation
- Sinp’o in DecemberNorth Korea · 151 kmHigh 2.1°C · Low -4.1°C · 39 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 Hyesan) is explained once on the Hyesan year overview and on the Sources, method and limits page.