Ara-dong climate — normals and trends
Ara-dong (South Korea) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 15.3 °C and it receives 1,365 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 (26.2 °C on average) and the coldest is January (5.7 °C). Rainfall peaks in June.
Ara-dong averages 2 frost days, 2 hot days (≥ 30 °C) and 133 rainy days per year.
Ara-dong has warmed by +1.3 °C between 1940 and 2025, or +0.16 °C per decade. This trend is statistically significant.
The number of frost days there went from about 3 to 1 per year over the period.
The hottest day of the period reached 31.9 °C (on 10 August 2013) and the coldest -3.6 °C (on 16 February 1977).
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
Ara-dongJeju-do
- coords
- 33.47°, 126.53°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.3°C
Average daily high
16.8°C
Average daily low
13.7°C
Annual rainfall
1,365mm
Sunshine / day
8.0h
Mean relative humidity
76%
Average peak wind
23.6km/h
Seasonal range
20.5°C
Frost days (< 0 °C)
2 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
133 d/yr
Annual snowfall
19.1 cm
Average feels-like high
16.2 °C
Average feels-like low
11.7 °C
Average peak gust
38.3 km/h
Tropical nights (≥ 20 °C)
95 d/yr
Solar radiation
14.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.3 °C
since 1940
+0.2 °C per decade · r² = 0.41 · 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
31.9 °C
10 August 2013
Coldest day
-3.6 °C
16 February 1977
Wettest day
217 mm
2 September 2020
Windiest day
94.6 km/h
17 September 1959
Strongest gust
169.6 km/h
28 August 2012
Hottest feels-like
40.6 °C
10 August 2013
Coldest feels-like
-13.9 °C
24 January 2016
Snowiest day
14.8 cm
31 December 2010
Sunniest day
13.7 h
19 June 1948
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 | 8.2 °C | +0.9 °C | 50 mm | -23 mm |
| Feb | 6.8 °C | -1.1 °C | 90 mm | +17 mm |
| Mar | 12.2 °C | +1.5 °C | 88 mm | +1 mm |
| Apr | 15.8 °C | +1.0 °C | 54 mm | -53 mm |
| May | 18.4 °C | +0.1 °C | 122 mm | +4 mm |
| Jun | 23.3 °C | +1.7 °C | 141 mm | -66 mm |
| Jul | 28.5 °C | +2.6 °C | 86 mm | -98 mm |
| Aug | 29.7 °C | +2.2 °C | 168 mm | +24 mm |
| Sep | 27.8 °C | +3.6 °C | 173 mm | +20 mm |
| Oct | 22.8 °C | +3.3 °C | 88 mm | +10 mm |
| Nov | 16.2 °C | +1.5 °C | 41 mm | -36 mm |
| Dec | 12.3 °C | +2.5 °C | 33 mm | -32 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 Ara-dong?
Ara-dong has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.3 °C and it receives 1,365 mm of precipitation per year.
What is the hottest day ever recorded in Ara-dong?
The hottest day measured in Ara-dong between 1940 and 2025 was 10 August 2013, reaching 31.9 °C.
What is the coldest day in Ara-dong?
The coldest day measured in Ara-dong between 1940 and 2025 was 16 February 1977, at -3.6 °C.
Does it snow in Ara-dong?
Yes. Ara-dong gets on average 19.1 cm of snow per year and has around 2 frost days.
Has the climate of Ara-dong warmed?
Yes: Ara-dong warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ara-dong?
The wettest day measured in Ara-dong between 1940 and 2025 was 2 September 2020, with 217 mm of rain in 24 hours.
What was the windiest day in Ara-dong?
The windiest day measured in Ara-dong between 1940 and 2025 was 17 September 1959, with winds reaching 94.6 km/h.
What is the warmest month in Ara-dong?
The warmest month in Ara-dong is August (26.2 °C on average); the coldest is January (5.7 °C).
How much does it rain in Ara-dong?
Ara-dong receives on average 1,365 mm of precipitation per year, spread over about 133 rainy days.
Is it sunny in Ara-dong?
Ara-dong gets on average 8.0 hours of sunshine per day, roughly 2,920 hours per year over 1940-2025.
What is the biggest single-day snowfall in Ara-dong?
The heaviest 24-hour snowfall measured in Ara-dong between 1940 and 2025 was 31 December 2010, with 14.8 cm.
Are there tropical nights in Ara-dong?
Yes: Ara-dong has on average 95 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ara-dong?
In Ara-dong, between 1940 and 2025, the highest apparent temperature reached 40.6 °C on 10 August 2013, and the lowest was -13.9 °C on 24 January 2016.
Compare Ara-dong with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ara-dong