Ongjin climate — normals and trends
Ongjin (North Korea) has a hot-summer humid continental, dry winter climate (Dwa) under the Köppen-Geiger classification. Its mean annual temperature is 11.3 °C and it receives 1,028 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 (24.4 °C on average) and the coldest is January (-1.8 °C). Rainfall peaks in July.
Ongjin averages 80 frost days, 1 hot days (≥ 30 °C) and 92 rainy days per year.
Ongjin has warmed by +1.5 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The number of frost days there went from about 91 to 69 per year over the period.
The hottest day of the period reached 32.0 °C (on 15 August 2018) and the coldest -14.7 °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
OngjinSouth Hwanghae
- coords
- 37.93°, 125.36°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.3°C
Average daily high
13.6°C
Average daily low
9.1°C
Annual rainfall
1,028mm
Sunshine / day
9.0h
Mean relative humidity
75%
Average peak wind
22.0km/h
Seasonal range
26.2°C
Frost days (< 0 °C)
80 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
92 d/yr
Annual snowfall
28.2 cm
Average feels-like high
12.1 °C
Average feels-like low
6.4 °C
Average peak gust
36.5 km/h
Tropical nights (≥ 20 °C)
64 d/yr
Solar radiation
15.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.44 · 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
32.0 °C
15 August 2018
Coldest day
-14.7 °C
25 January 1941
Wettest day
189 mm
7 September 1962
Windiest day
76.0 km/h
27 August 2020
Strongest gust
139.0 km/h
27 August 2020
Hottest feels-like
39.5 °C
2 August 2018
Coldest feels-like
-23.5 °C
5 January 1970
Snowiest day
17.8 cm
8 March 1991
Sunniest day
14.1 h
23 June 1981
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 | 2.4 °C | +1.8 °C | 21 mm | -2 mm |
| Feb | 0.8 °C | -1.0 °C | 15 mm | -6 mm |
| Mar | 7.9 °C | +1.9 °C | 39 mm | +6 mm |
| Apr | 12.1 °C | +0.6 °C | 79 mm | +14 mm |
| May | 16.6 °C | 0.0 °C | 86 mm | +6 mm |
| Jun | 22.3 °C | +1.2 °C | 123 mm | +23 mm |
| Jul | 27.3 °C | +2.6 °C | 72 mm | -185 mm |
| Aug | 28.3 °C | +2.0 °C | 133 mm | -75 mm |
| Sep | 25.1 °C | +2.1 °C | 198 mm | +83 mm |
| Oct | 18.3 °C | +1.0 °C | 143 mm | +96 mm |
| Nov | 12.2 °C | +1.8 °C | 17 mm | -31 mm |
| Dec | 4.8 °C | +1.0 °C | 30 mm | -1 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 Ongjin?
Ongjin has a hot-summer humid continental, dry winter climate (Köppen Dwa). Over 1940-2025, the average annual temperature is 11.3 °C and it receives 1,028 mm of precipitation per year.
What is the hottest day ever recorded in Ongjin?
The hottest day measured in Ongjin between 1940 and 2025 was 15 August 2018, reaching 32.0 °C.
What is the coldest day in Ongjin?
The coldest day measured in Ongjin between 1940 and 2025 was 25 January 1941, at -14.7 °C.
Does it snow in Ongjin?
Yes. Ongjin gets on average 28.2 cm of snow per year and has around 80 frost days.
Has the climate of Ongjin warmed?
Yes: Ongjin warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ongjin?
The wettest day measured in Ongjin between 1940 and 2025 was 7 September 1962, with 189 mm of rain in 24 hours.
What was the windiest day in Ongjin?
The windiest day measured in Ongjin between 1940 and 2025 was 27 August 2020, with winds reaching 76.0 km/h.
What is the warmest month in Ongjin?
The warmest month in Ongjin is August (24.4 °C on average); the coldest is January (-1.8 °C).
How much does it rain in Ongjin?
Ongjin receives on average 1,028 mm of precipitation per year, spread over about 92 rainy days.
Is it sunny in Ongjin?
Ongjin gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.
What is the biggest single-day snowfall in Ongjin?
The heaviest 24-hour snowfall measured in Ongjin between 1940 and 2025 was 8 March 1991, with 17.8 cm.
Are there tropical nights in Ongjin?
Yes: Ongjin has on average 64 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ongjin?
In Ongjin, between 1940 and 2025, the highest apparent temperature reached 39.5 °C on 2 August 2018, and the lowest was -23.5 °C on 5 January 1970.
Compare Ongjin with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ongjin