Jumunjin climate — normals and trends
Jumunjin (South Korea) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 11.2 °C and it receives 1,165 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 (23.9 °C on average) and the coldest is January (-2.9 °C). Rainfall peaks in July.
Jumunjin averages 92 frost days, 9 hot days (≥ 30 °C) and 111 rainy days per year.
Jumunjin has warmed by +2.2 °C between 1940 and 2025, or +0.26 °C per decade. This trend is statistically significant.
The number of frost days there went from about 106 to 78 per year over the period.
The hottest day of the period reached 35.2 °C (on 4 August 2018) and the coldest -22.3 °C (on 31 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
JumunjinGangwon-do
- coords
- 37.89°, 128.83°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.2°C
Average daily high
14.8°C
Average daily low
7.7°C
Annual rainfall
1,165mm
Sunshine / day
9.0h
Mean relative humidity
70%
Average peak wind
16.0km/h
Seasonal range
26.8°C
Frost days (< 0 °C)
92 d/yr
Hot days (≥ 30 °C)
9 d/yr
Rainy days (≥ 1 mm)
111 d/yr
Annual snowfall
78.2 cm
Average feels-like high
13.6 °C
Average feels-like low
5.5 °C
Average peak gust
36.5 km/h
Tropical nights (≥ 20 °C)
47 d/yr
Solar radiation
15.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.2 °C
since 1940
+0.3 °C per decade · r² = 0.55 · 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
35.2 °C
4 August 2018
Coldest day
-22.3 °C
31 January 1941
Wettest day
180 mm
13 September 1954
Windiest day
58.4 km/h
27 April 1983
Strongest gust
128.2 km/h
27 April 1983
Hottest feels-like
41.8 °C
4 August 2018
Coldest feels-like
-29.1 °C
31 January 1941
Snowiest day
40.3 cm
28 February 1956
Sunniest day
14.5 h
25 June 1941
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 | 3.4 °C | +2.1 °C | 12 mm | -31 mm |
| Feb | 3.8 °C | +0.7 °C | 1 mm | -48 mm |
| Mar | 9.7 °C | +1.7 °C | 97 mm | +34 mm |
| Apr | 16.3 °C | +1.5 °C | 53 mm | -16 mm |
| May | 19.5 °C | -0.5 °C | 74 mm | -1 mm |
| Jun | 25.8 °C | +3.1 °C | 56 mm | -57 mm |
| Jul | 29.4 °C | +3.6 °C | 146 mm | -55 mm |
| Aug | 29.6 °C | +3.0 °C | 146 mm | -51 mm |
| Sep | 24.9 °C | +2.4 °C | 263 mm | +89 mm |
| Oct | 17.5 °C | -0.2 °C | 345 mm | +266 mm |
| Nov | 13.3 °C | +2.2 °C | 24 mm | -39 mm |
| Dec | 6.0 °C | +1.8 °C | 28 mm | -11 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 Jumunjin?
Jumunjin has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 11.2 °C and it receives 1,165 mm of precipitation per year.
What is the hottest day ever recorded in Jumunjin?
The hottest day measured in Jumunjin between 1940 and 2025 was 4 August 2018, reaching 35.2 °C.
What is the coldest day in Jumunjin?
The coldest day measured in Jumunjin between 1940 and 2025 was 31 January 1941, at -22.3 °C.
Does it snow in Jumunjin?
Yes. Jumunjin gets on average 78.2 cm of snow per year and has around 92 frost days.
Has the climate of Jumunjin warmed?
Yes: Jumunjin warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Jumunjin?
The wettest day measured in Jumunjin between 1940 and 2025 was 13 September 1954, with 180 mm of rain in 24 hours.
What was the windiest day in Jumunjin?
The windiest day measured in Jumunjin between 1940 and 2025 was 27 April 1983, with winds reaching 58.4 km/h.
What is the warmest month in Jumunjin?
The warmest month in Jumunjin is August (23.9 °C on average); the coldest is January (-2.9 °C).
How much does it rain in Jumunjin?
Jumunjin receives on average 1,165 mm of precipitation per year, spread over about 111 rainy days.
Is it sunny in Jumunjin?
Jumunjin 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 Jumunjin?
The heaviest 24-hour snowfall measured in Jumunjin between 1940 and 2025 was 28 February 1956, with 40.3 cm.
Are there tropical nights in Jumunjin?
Yes: Jumunjin has on average 47 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Jumunjin?
In Jumunjin, between 1940 and 2025, the highest apparent temperature reached 41.8 °C on 4 August 2018, and the lowest was -29.1 °C on 31 January 1941.
Compare Jumunjin with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Jumunjin