Haenam climate — normals and trends
Haenam (South Korea) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 14.2 °C and it receives 1,223 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 (25.9 °C on average) and the coldest is January (3.4 °C). Rainfall peaks in July.
Haenam averages 19 frost days, 1 hot days (≥ 30 °C) and 105 rainy days per year.
Haenam has warmed by +1.3 °C between 1940 and 2025, or +0.15 °C per decade. This trend is statistically significant.
The number of frost days there went from about 26 to 12 per year over the period.
The hottest day of the period reached 31.8 °C (on 6 August 2017) and the coldest -8.7 °C (on 25 January 2023).
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
HaenamJeollanam-do
- coords
- 34.57°, 126.60°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.2°C
Average daily high
16.0°C
Average daily low
12.6°C
Annual rainfall
1,223mm
Sunshine / day
8.5h
Mean relative humidity
77%
Average peak wind
23.5km/h
Seasonal range
22.5°C
Frost days (< 0 °C)
19 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
105 d/yr
Annual snowfall
15.5 cm
Average feels-like high
15.2 °C
Average feels-like low
10.5 °C
Average peak gust
39.2 km/h
Tropical nights (≥ 20 °C)
89 d/yr
Solar radiation
15.1 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
31.8 °C
6 August 2017
Coldest day
-8.7 °C
25 January 2023
Wettest day
168 mm
24 June 1985
Windiest day
93.1 km/h
28 August 2012
Strongest gust
167.8 km/h
28 August 2012
Hottest feels-like
40.9 °C
11 August 2016
Coldest feels-like
-15.6 °C
24 January 2016
Snowiest day
7.6 cm
11 February 1994
Sunniest day
13.8 h
29 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 | 6.3 °C | +0.9 °C | 31 mm | -11 mm |
| Feb | 4.8 °C | -1.4 °C | 64 mm | +17 mm |
| Mar | 10.4 °C | +1.0 °C | 55 mm | -14 mm |
| Apr | 14.3 °C | +0.5 °C | 52 mm | -46 mm |
| May | 18.0 °C | 0.0 °C | 125 mm | +14 mm |
| Jun | 23.2 °C | +1.8 °C | 155 mm | -36 mm |
| Jul | 28.3 °C | +3.0 °C | 118 mm | -111 mm |
| Aug | 28.9 °C | +1.7 °C | 257 mm | +112 mm |
| Sep | 26.5 °C | +2.4 °C | 166 mm | +25 mm |
| Oct | 21.4 °C | +2.2 °C | 139 mm | +83 mm |
| Nov | 14.8 °C | +1.2 °C | 27 mm | -29 mm |
| Dec | 9.5 °C | +1.4 °C | 25 mm | -14 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 Haenam?
Haenam has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 14.2 °C and it receives 1,223 mm of precipitation per year.
What is the hottest day ever recorded in Haenam?
The hottest day measured in Haenam between 1940 and 2025 was 6 August 2017, reaching 31.8 °C.
What is the coldest day in Haenam?
The coldest day measured in Haenam between 1940 and 2025 was 25 January 2023, at -8.7 °C.
Does it snow in Haenam?
Yes. Haenam gets on average 15.5 cm of snow per year and has around 19 frost days.
Has the climate of Haenam warmed?
Yes: Haenam warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Haenam?
The wettest day measured in Haenam between 1940 and 2025 was 24 June 1985, with 168 mm of rain in 24 hours.
What was the windiest day in Haenam?
The windiest day measured in Haenam between 1940 and 2025 was 28 August 2012, with winds reaching 93.1 km/h.
What is the warmest month in Haenam?
The warmest month in Haenam is August (25.9 °C on average); the coldest is January (3.4 °C).
How much does it rain in Haenam?
Haenam receives on average 1,223 mm of precipitation per year, spread over about 105 rainy days.
Is it sunny in Haenam?
Haenam 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 Haenam?
The heaviest 24-hour snowfall measured in Haenam between 1940 and 2025 was 11 February 1994, with 7.6 cm.
Are there tropical nights in Haenam?
Yes: Haenam has on average 89 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Haenam?
In Haenam, between 1940 and 2025, the highest apparent temperature reached 40.9 °C on 11 August 2016, and the lowest was -15.6 °C on 24 January 2016.
Compare Haenam with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Haenam