Gapyeong County climate — normals and trends
Gapyeong County (South Korea) has a hot-summer humid continental, dry winter climate (Dwa) under the Köppen-Geiger classification. Its mean annual temperature is 10.6 °C and it receives 1,342 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 (24.3 °C on average) and the coldest is January (-5.1 °C). Rainfall peaks in July.
Gapyeong County averages 120 frost days, 17 hot days (≥ 30 °C) and 109 rainy days per year.
Gapyeong County has warmed by +2.3 °C between 1940 and 2025, or +0.27 °C per decade. This trend is statistically significant.
The number of frost days there went from about 132 to 108 per year over the period.
The hottest day of the period reached 37.2 °C (on 1 August 2018) and the coldest -27.6 °C (on 24 January 1963).
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
Gapyeong CountyGyeonggi-do
- coords
- 37.83°, 127.51°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.6°C
Average daily high
15.5°C
Average daily low
6.1°C
Annual rainfall
1,342mm
Sunshine / day
8.5h
Mean relative humidity
71%
Average peak wind
12.8km/h
Seasonal range
29.4°C
Frost days (< 0 °C)
120 d/yr
Hot days (≥ 30 °C)
17 d/yr
Rainy days (≥ 1 mm)
109 d/yr
Annual snowfall
36.6 cm
Average feels-like high
14.3 °C
Average feels-like low
4.5 °C
Average peak gust
34.0 km/h
Tropical nights (≥ 20 °C)
45 d/yr
Solar radiation
14.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °C
since 1940
+0.3 °C per decade · r² = 0.55 · 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
37.2 °C
1 August 2018
Coldest day
-27.6 °C
24 January 1963
Wettest day
250 mm
7 August 2002
Windiest day
43.3 km/h
7 September 2019
Strongest gust
117.4 km/h
28 August 2012
Hottest feels-like
43.4 °C
1 August 2018
Coldest feels-like
-33.2 °C
24 January 1963
Snowiest day
18.1 cm
28 January 1969
Sunniest day
14.4 h
28 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 | 2.2 °C | +2.3 °C | 20 mm | -4 mm |
| Feb | 2.5 °C | -0.4 °C | 4 mm | -25 mm |
| Mar | 11.8 °C | +2.6 °C | 48 mm | -3 mm |
| Apr | 17.9 °C | +1.5 °C | 105 mm | +17 mm |
| May | 20.9 °C | -0.8 °C | 101 mm | -2 mm |
| Jun | 26.9 °C | +1.7 °C | 163 mm | +10 mm |
| Jul | 30.4 °C | +3.0 °C | 231 mm | -114 mm |
| Aug | 30.1 °C | +1.9 °C | 247 mm | -11 mm |
| Sep | 25.7 °C | +1.6 °C | 287 mm | +131 mm |
| Oct | 19.1 °C | +1.0 °C | 186 mm | +131 mm |
| Nov | 12.5 °C | +2.4 °C | 17 mm | -33 mm |
| Dec | 3.6 °C | +1.2 °C | 44 mm | +15 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 Gapyeong County?
Gapyeong County has a hot-summer humid continental, dry winter climate (Köppen Dwa). Over 1940-2025, the average annual temperature is 10.6 °C and it receives 1,342 mm of precipitation per year.
What is the hottest day ever recorded in Gapyeong County?
The hottest day measured in Gapyeong County between 1940 and 2025 was 1 August 2018, reaching 37.2 °C.
What is the coldest day in Gapyeong County?
The coldest day measured in Gapyeong County between 1940 and 2025 was 24 January 1963, at -27.6 °C.
Does it snow in Gapyeong County?
Yes. Gapyeong County gets on average 36.6 cm of snow per year and has around 120 frost days.
Has the climate of Gapyeong County warmed?
Yes: Gapyeong County warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Gapyeong County?
The wettest day measured in Gapyeong County between 1940 and 2025 was 7 August 2002, with 250 mm of rain in 24 hours.
What was the windiest day in Gapyeong County?
The windiest day measured in Gapyeong County between 1940 and 2025 was 7 September 2019, with winds reaching 43.3 km/h.
What is the warmest month in Gapyeong County?
The warmest month in Gapyeong County is August (24.3 °C on average); the coldest is January (-5.1 °C).
How much does it rain in Gapyeong County?
Gapyeong County receives on average 1,342 mm of precipitation per year, spread over about 109 rainy days.
Is it sunny in Gapyeong County?
Gapyeong County gets on average 8.5 hours of sunshine per day, roughly 3,103 hours per year over 1940-2025.
What is the biggest single-day snowfall in Gapyeong County?
The heaviest 24-hour snowfall measured in Gapyeong County between 1940 and 2025 was 28 January 1969, with 18.1 cm.
Are there tropical nights in Gapyeong County?
Yes: Gapyeong County has on average 45 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Gapyeong County?
In Gapyeong County, between 1940 and 2025, the highest apparent temperature reached 43.4 °C on 1 August 2018, and the lowest was -33.2 °C on 24 January 1963.
Compare Gapyeong County with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Gapyeong County