Anseong climate — normals and trends
Anseong (South Korea) has a hot-summer humid continental, dry winter climate (Dwa) under the Köppen-Geiger classification. Its mean annual temperature is 12.0 °C and it receives 1,210 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 (25.6 °C on average) and the coldest is January (-2.9 °C). Rainfall peaks in July.
Anseong averages 110 frost days, 34 hot days (≥ 30 °C) and 102 rainy days per year.
Anseong has warmed by +2.0 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The number of frost days there went from about 121 to 99 per year over the period.
The hottest day of the period reached 39.0 °C (on 15 August 2018) and the coldest -23.1 °C (on 18 January 1945).
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
AnseongGyeonggi-do
- coords
- 37.01°, 127.27°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.0°C
Average daily high
17.0°C
Average daily low
7.6°C
Annual rainfall
1,210mm
Sunshine / day
8.7h
Mean relative humidity
71%
Average peak wind
14.0km/h
Seasonal range
28.5°C
Frost days (< 0 °C)
110 d/yr
Hot days (≥ 30 °C)
34 d/yr
Rainy days (≥ 1 mm)
102 d/yr
Annual snowfall
21.2 cm
Average feels-like high
16.1 °C
Average feels-like low
6.1 °C
Average peak gust
33.0 km/h
Tropical nights (≥ 20 °C)
60 d/yr
Solar radiation
14.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.52 · 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
39.0 °C
15 August 2018
Coldest day
-23.1 °C
18 January 1945
Wettest day
187 mm
21 September 2024
Windiest day
46.7 km/h
28 August 2012
Strongest gust
115.9 km/h
28 August 1986
Hottest feels-like
44.6 °C
3 August 1959
Coldest feels-like
-28.8 °C
18 January 1945
Snowiest day
19.6 cm
28 January 1969
Sunniest day
14.2 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 | 3.7 °C | +2.0 °C | 17 mm | -8 mm |
| Feb | 3.6 °C | -0.8 °C | 10 mm | -20 mm |
| Mar | 13.4 °C | +3.0 °C | 49 mm | -3 mm |
| Apr | 19.7 °C | +1.9 °C | 77 mm | -7 mm |
| May | 23.1 °C | -0.3 °C | 82 mm | -10 mm |
| Jun | 29.2 °C | +2.2 °C | 145 mm | +8 mm |
| Jul | 32.5 °C | +3.6 °C | 238 mm | -53 mm |
| Aug | 31.6 °C | +2.0 °C | 196 mm | -26 mm |
| Sep | 27.0 °C | +1.7 °C | 307 mm | +158 mm |
| Oct | 20.5 °C | +1.1 °C | 183 mm | +129 mm |
| Nov | 14.2 °C | +2.4 °C | 15 mm | -33 mm |
| Dec | 5.6 °C | +1.3 °C | 37 mm | +9 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 Anseong?
Anseong has a hot-summer humid continental, dry winter climate (Köppen Dwa). Over 1940-2025, the average annual temperature is 12.0 °C and it receives 1,210 mm of precipitation per year.
What is the hottest day ever recorded in Anseong?
The hottest day measured in Anseong between 1940 and 2025 was 15 August 2018, reaching 39.0 °C.
What is the coldest day in Anseong?
The coldest day measured in Anseong between 1940 and 2025 was 18 January 1945, at -23.1 °C.
Does it snow in Anseong?
Yes. Anseong gets on average 21.2 cm of snow per year and has around 110 frost days.
Has the climate of Anseong warmed?
Yes: Anseong warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Anseong?
The wettest day measured in Anseong between 1940 and 2025 was 21 September 2024, with 187 mm of rain in 24 hours.
What was the windiest day in Anseong?
The windiest day measured in Anseong between 1940 and 2025 was 28 August 2012, with winds reaching 46.7 km/h.
What is the warmest month in Anseong?
The warmest month in Anseong is August (25.6 °C on average); the coldest is January (-2.9 °C).
How much does it rain in Anseong?
Anseong receives on average 1,210 mm of precipitation per year, spread over about 102 rainy days.
Is it sunny in Anseong?
Anseong gets on average 8.7 hours of sunshine per day, roughly 3,175 hours per year over 1940-2025.
What is the biggest single-day snowfall in Anseong?
The heaviest 24-hour snowfall measured in Anseong between 1940 and 2025 was 28 January 1969, with 19.6 cm.
Are there tropical nights in Anseong?
Yes: Anseong has on average 60 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Anseong?
In Anseong, between 1940 and 2025, the highest apparent temperature reached 44.6 °C on 3 August 1959, and the lowest was -28.8 °C on 18 January 1945.
Compare Anseong with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Anseong