Gangneung climate — normals and trends
Gangneung (South Korea) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 9.5 °C and it receives 1,273 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 (22.7 °C on average) and the coldest is January (-5.4 °C). Rainfall peaks in July.
Gangneung averages 119 frost days, 7 hot days (≥ 30 °C) and 119 rainy days per year.
Gangneung 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 131 to 107 per year over the period.
The hottest day of the period reached 33.7 °C (on 12 July 1942) and the coldest -25.8 °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
GangneungGangwon-do
- coords
- 37.75°, 128.87°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.5°C
Average daily high
13.8°C
Average daily low
5.6°C
Annual rainfall
1,273mm
Sunshine / day
9.0h
Mean relative humidity
71%
Average peak wind
14.9km/h
Seasonal range
28.1°C
Frost days (< 0 °C)
119 d/yr
Hot days (≥ 30 °C)
7 d/yr
Rainy days (≥ 1 mm)
119 d/yr
Annual snowfall
107.2 cm
Average feels-like high
12.4 °C
Average feels-like low
3.2 °C
Average peak gust
41.2 km/h
Tropical nights (≥ 20 °C)
33 d/yr
Solar radiation
15.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.2 °C
since 1940
+0.3 °C per decade · r² = 0.54 · 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
33.7 °C
12 July 1942
Coldest day
-25.8 °C
31 January 1941
Wettest day
195 mm
13 September 1954
Windiest day
51.5 km/h
27 April 1983
Strongest gust
135.7 km/h
18 April 1946
Hottest feels-like
39.5 °C
20 July 2005
Coldest feels-like
-32.4 °C
31 January 1941
Snowiest day
51.2 cm
28 February 1956
Sunniest day
14.4 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 | 1.6 °C | +2.0 °C | 15 mm | -28 mm |
| Feb | 2.2 °C | +0.6 °C | 3 mm | -50 mm |
| Mar | 8.7 °C | +1.8 °C | 109 mm | +38 mm |
| Apr | 16.3 °C | +1.9 °C | 62 mm | -18 mm |
| May | 18.9 °C | -0.7 °C | 81 mm | -4 mm |
| Jun | 25.2 °C | +2.8 °C | 61 mm | -70 mm |
| Jul | 28.8 °C | +3.4 °C | 138 mm | -81 mm |
| Aug | 28.8 °C | +2.9 °C | 134 mm | -84 mm |
| Sep | 23.7 °C | +2.2 °C | 268 mm | +78 mm |
| Oct | 16.3 °C | -0.2 °C | 363 mm | +279 mm |
| Nov | 11.9 °C | +2.3 °C | 22 mm | -41 mm |
| Dec | 4.3 °C | +1.8 °C | 27 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 Gangneung?
Gangneung has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 9.5 °C and it receives 1,273 mm of precipitation per year.
What is the hottest day ever recorded in Gangneung?
The hottest day measured in Gangneung between 1940 and 2025 was 12 July 1942, reaching 33.7 °C.
What is the coldest day in Gangneung?
The coldest day measured in Gangneung between 1940 and 2025 was 31 January 1941, at -25.8 °C.
Does it snow in Gangneung?
Yes. Gangneung gets on average 107.2 cm of snow per year and has around 119 frost days.
Has the climate of Gangneung warmed?
Yes: Gangneung warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Gangneung?
The wettest day measured in Gangneung between 1940 and 2025 was 13 September 1954, with 195 mm of rain in 24 hours.
What was the windiest day in Gangneung?
The windiest day measured in Gangneung between 1940 and 2025 was 27 April 1983, with winds reaching 51.5 km/h.
What is the warmest month in Gangneung?
The warmest month in Gangneung is August (22.7 °C on average); the coldest is January (-5.4 °C).
How much does it rain in Gangneung?
Gangneung receives on average 1,273 mm of precipitation per year, spread over about 119 rainy days.
Is it sunny in Gangneung?
Gangneung 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 Gangneung?
The heaviest 24-hour snowfall measured in Gangneung between 1940 and 2025 was 28 February 1956, with 51.2 cm.
Are there tropical nights in Gangneung?
Yes: Gangneung has on average 33 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Gangneung?
In Gangneung, between 1940 and 2025, the highest apparent temperature reached 39.5 °C on 20 July 2005, and the lowest was -32.4 °C on 31 January 1941.
Compare Gangneung with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Gangneung