Uiju climate — normals and trends
Uiju (North Korea) has a hot-summer humid continental, dry winter climate (Dwa) under the Köppen-Geiger classification. Its mean annual temperature is 8.7 °C and it receives 1,057 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is August (23.7 °C on average) and the coldest is January (-9.2 °C). Rainfall peaks in July.
Uiju averages 141 frost days, 11 hot days (≥ 30 °C) and 99 rainy days per year.
Uiju has warmed by +2.5 °C between 1940 and 2025, or +0.30 °C per decade. This trend is statistically significant.
The number of frost days there went from about 151 to 131 per year over the period.
The hottest day of the period reached 37.6 °C (on 1 August 2018) and the coldest -34.6 °C (on 25 January 1941).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
UijuP'yŏngan-bukto
- coords
- 40.20°, 124.53°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.7°C
Average daily high
13.7°C
Average daily low
4.1°C
Annual rainfall
1,057mm
Sunshine / day
8.7h
Mean relative humidity
69%
Average peak wind
15.2km/h
Seasonal range
32.9°C
Frost days (< 0 °C)
141 d/yr
Hot days (≥ 30 °C)
11 d/yr
Rainy days (≥ 1 mm)
99 d/yr
Annual snowfall
39.1 cm
Average feels-like high
12.1 °C
Average feels-like low
1.9 °C
Average peak gust
34.5 km/h
Tropical nights (≥ 20 °C)
39 d/yr
Solar radiation
14.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.5 °C
since 1940
+0.3 °C per decade · r² = 0.62 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
37.6 °C
1 August 2018
Coldest day
-34.6 °C
25 January 1941
Wettest day
210 mm
5 September 1956
Windiest day
42.9 km/h
16 August 1994
Strongest gust
105.1 km/h
16 August 1994
Hottest feels-like
45.1 °C
1 August 2018
Coldest feels-like
-39.6 °C
25 January 1941
Snowiest day
24.6 cm
22 December 1980
Sunniest day
14.2 h
12 June 2004
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -0.1 °C | +3.3 °C | 17 mm | +5 mm |
| Feb | 0.0 °C | -0.3 °C | 10 mm | -7 mm |
| Mar | 9.6 °C | +2.5 °C | 5 mm | -25 mm |
| Apr | 16.0 °C | +1.2 °C | 91 mm | +31 mm |
| May | 21.0 °C | +0.4 °C | 72 mm | -13 mm |
| Jun | 26.9 °C | +2.5 °C | 119 mm | +5 mm |
| Jul | 29.7 °C | +2.6 °C | 219 mm | -48 mm |
| Aug | 28.4 °C | +0.8 °C | 425 mm | +180 mm |
| Sep | 26.6 °C | +3.0 °C | 100 mm | +5 mm |
| Oct | 17.0 °C | +0.5 °C | 92 mm | +30 mm |
| Nov | 10.0 °C | +2.8 °C | 26 mm | -22 mm |
| Dec | 0.1 °C | +1.1 °C | 18 mm | -2 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Uiju?
Uiju has a hot-summer humid continental, dry winter climate (Köppen Dwa). Over 1940-2025, the average annual temperature is 8.7 °C and it receives 1,057 mm of precipitation per year.
What is the hottest day ever recorded in Uiju?
The hottest day measured in Uiju between 1940 and 2025 was 1 August 2018, reaching 37.6 °C.
What is the coldest day in Uiju?
The coldest day measured in Uiju between 1940 and 2025 was 25 January 1941, at -34.6 °C.
Does it snow in Uiju?
Yes. Uiju gets on average 39.1 cm of snow per year and has around 141 frost days.
Has the climate of Uiju warmed?
Yes: Uiju warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Uiju?
The wettest day measured in Uiju between 1940 and 2025 was 5 September 1956, with 210 mm of rain in 24 hours.
What was the windiest day in Uiju?
The windiest day measured in Uiju between 1940 and 2025 was 16 August 1994, with winds reaching 42.9 km/h.
What is the warmest month in Uiju?
The warmest month in Uiju is August (23.7 °C on average); the coldest is January (-9.2 °C).
How much does it rain in Uiju?
Uiju receives on average 1,057 mm of precipitation per year, spread over about 99 rainy days.
Is it sunny in Uiju?
Uiju gets on average 8.7 hours of sunshine per day, roughly 3,175 hours per year over 1940-2025.
What is the biggest single-day snowfall in Uiju?
The heaviest 24-hour snowfall measured in Uiju between 1940 and 2025 was 22 December 1980, with 24.6 cm.
Are there tropical nights in Uiju?
Yes: Uiju has on average 39 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Uiju?
In Uiju, between 1940 and 2025, the highest apparent temperature reached 45.1 °C on 1 August 2018, and the lowest was -39.6 °C on 25 January 1941.
Compare Uiju with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Uiju