Sinp’o climate — normals and trends
Sinp’o (North Korea) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 9.9 °C and it receives 924 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 (22.6 °C on average) and the coldest is January (-2.5 °C). Rainfall peaks in August.
Sinp’o averages 82 frost days, 0 hot days (≥ 30 °C) and 96 rainy days per year.
Sinp’o has warmed by +2.3 °C between 1940 and 2025, or +0.28 °C per decade. This trend is statistically significant.
The number of frost days there went from about 107 to 57 per year over the period.
The hottest day of the period reached 31.3 °C (on 4 August 2018) and the coldest -17.0 °C (on 9 January 1940).
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
Sinp’oSouth Hamgyong
- coords
- 40.04°, 128.19°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.9°C
Average daily high
11.5°C
Average daily low
8.5°C
Annual rainfall
924mm
Sunshine / day
9.1h
Mean relative humidity
76%
Average peak wind
22.3km/h
Seasonal range
25.1°C
Frost days (< 0 °C)
82 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
96 d/yr
Annual snowfall
71.7 cm
Average feels-like high
9.7 °C
Average feels-like low
5.8 °C
Average peak gust
31.6 km/h
Tropical nights (≥ 20 °C)
49 d/yr
Solar radiation
14.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °C
since 1940
+0.3 °C per decade · r² = 0.61 · 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
31.3 °C
4 August 2018
Coldest day
-17.0 °C
9 January 1940
Wettest day
131 mm
8 August 1962
Windiest day
74.1 km/h
10 October 2001
Strongest gust
104.0 km/h
10 October 2001
Hottest feels-like
36.8 °C
13 August 2016
Coldest feels-like
-23.3 °C
14 January 1967
Snowiest day
29.6 cm
23 December 1980
Sunniest day
14.9 h
21 June 1951
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 | 2.3 °C | +2.7 °C | 43 mm | +13 mm |
| Feb | 2.5 °C | +1.9 °C | 13 mm | -14 mm |
| Mar | 5.6 °C | +1.8 °C | 39 mm | +5 mm |
| Apr | 9.7 °C | +0.7 °C | 80 mm | +26 mm |
| May | 14.3 °C | +0.2 °C | 68 mm | -2 mm |
| Jun | 21.1 °C | +3.2 °C | 147 mm | +64 mm |
| Jul | 25.9 °C | +4.0 °C | 131 mm | -55 mm |
| Aug | 26.6 °C | +3.0 °C | 115 mm | -73 mm |
| Sep | 23.1 °C | +2.6 °C | 176 mm | +74 mm |
| Oct | 16.2 °C | +0.5 °C | 156 mm | +101 mm |
| Nov | 10.8 °C | +1.7 °C | 23 mm | -34 mm |
| Dec | 3.6 °C | +1.0 °C | 41 mm | +3 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 Sinp’o?
Sinp’o has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 9.9 °C and it receives 924 mm of precipitation per year.
What is the hottest day ever recorded in Sinp’o?
The hottest day measured in Sinp’o between 1940 and 2025 was 4 August 2018, reaching 31.3 °C.
What is the coldest day in Sinp’o?
The coldest day measured in Sinp’o between 1940 and 2025 was 9 January 1940, at -17.0 °C.
Does it snow in Sinp’o?
Yes. Sinp’o gets on average 71.7 cm of snow per year and has around 82 frost days.
Has the climate of Sinp’o warmed?
Yes: Sinp’o warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Sinp’o?
The wettest day measured in Sinp’o between 1940 and 2025 was 8 August 1962, with 131 mm of rain in 24 hours.
What was the windiest day in Sinp’o?
The windiest day measured in Sinp’o between 1940 and 2025 was 10 October 2001, with winds reaching 74.1 km/h.
What is the warmest month in Sinp’o?
The warmest month in Sinp’o is August (22.6 °C on average); the coldest is January (-2.5 °C).
How much does it rain in Sinp’o?
Sinp’o receives on average 924 mm of precipitation per year, spread over about 96 rainy days.
Is it sunny in Sinp’o?
Sinp’o gets on average 9.1 hours of sunshine per day, roughly 3,322 hours per year over 1940-2025.
What is the biggest single-day snowfall in Sinp’o?
The heaviest 24-hour snowfall measured in Sinp’o between 1940 and 2025 was 23 December 1980, with 29.6 cm.
Are there tropical nights in Sinp’o?
Yes: Sinp’o has on average 49 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Sinp’o?
In Sinp’o, between 1940 and 2025, the highest apparent temperature reached 36.8 °C on 13 August 2016, and the lowest was -23.3 °C on 14 January 1967.
Compare Sinp’o with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Sinp’o