Heunghae climate — normals and trends
Heunghae (South Korea) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 13.1 °C and it receives 1,046 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 (0.0 °C). Rainfall peaks in July.
Heunghae averages 76 frost days, 27 hot days (≥ 30 °C) and 92 rainy days per year.
Heunghae has warmed by +2.5 °C between 1940 and 2025, or +0.30 °C per decade. This trend is statistically significant.
The number of frost days there went from about 94 to 58 per year over the period.
The hottest day of the period reached 38.4 °C (on 14 August 1995) and the coldest -18.3 °C (on 16 January 1967).
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
HeunghaeGyeongsangbuk-do
- coords
- 36.11°, 129.35°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.1°C
Average daily high
17.2°C
Average daily low
9.5°C
Annual rainfall
1,046mm
Sunshine / day
8.7h
Mean relative humidity
69%
Average peak wind
16.7km/h
Seasonal range
25.9°C
Frost days (< 0 °C)
76 d/yr
Hot days (≥ 30 °C)
27 d/yr
Rainy days (≥ 1 mm)
92 d/yr
Annual snowfall
11.1 cm
Average feels-like high
16.0 °C
Average feels-like low
7.8 °C
Average peak gust
37.3 km/h
Tropical nights (≥ 20 °C)
69 d/yr
Solar radiation
15.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.5 °C
since 1940
+0.3 °C per decade · r² = 0.67 · 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
38.4 °C
14 August 1995
Coldest day
-18.3 °C
16 January 1967
Wettest day
188 mm
8 August 2020
Windiest day
62.7 km/h
31 August 1987
Strongest gust
160.6 km/h
16 July 1987
Hottest feels-like
44.0 °C
28 July 1953
Coldest feels-like
-25.1 °C
16 January 1967
Snowiest day
18.3 cm
21 March 2018
Sunniest day
14.0 h
25 June 1958
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 | 5.7 °C | +1.6 °C | 8 mm | -18 mm |
| Feb | 5.4 °C | -0.7 °C | 14 mm | -21 mm |
| Mar | 12.9 °C | +2.2 °C | 75 mm | +15 mm |
| Apr | 18.5 °C | +1.9 °C | 43 mm | -34 mm |
| May | 21.4 °C | -0.3 °C | 107 mm | +22 mm |
| Jun | 28.3 °C | +3.2 °C | 154 mm | +27 mm |
| Jul | 30.8 °C | +2.6 °C | 155 mm | -38 mm |
| Aug | 32.3 °C | +3.2 °C | 102 mm | -64 mm |
| Sep | 27.1 °C | +2.6 °C | 129 mm | -24 mm |
| Oct | 20.1 °C | +0.5 °C | 142 mm | +83 mm |
| Nov | 15.1 °C | +1.7 °C | 14 mm | -29 mm |
| Dec | 8.4 °C | +1.6 °C | 18 mm | -6 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 Heunghae?
Heunghae has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 13.1 °C and it receives 1,046 mm of precipitation per year.
What is the hottest day ever recorded in Heunghae?
The hottest day measured in Heunghae between 1940 and 2025 was 14 August 1995, reaching 38.4 °C.
What is the coldest day in Heunghae?
The coldest day measured in Heunghae between 1940 and 2025 was 16 January 1967, at -18.3 °C.
Does it snow in Heunghae?
Yes. Heunghae gets on average 11.1 cm of snow per year and has around 76 frost days.
Has the climate of Heunghae warmed?
Yes: Heunghae warmed by +2.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Heunghae?
The wettest day measured in Heunghae between 1940 and 2025 was 8 August 2020, with 188 mm of rain in 24 hours.
What was the windiest day in Heunghae?
The windiest day measured in Heunghae between 1940 and 2025 was 31 August 1987, with winds reaching 62.7 km/h.
What is the warmest month in Heunghae?
The warmest month in Heunghae is August (25.9 °C on average); the coldest is January (0.0 °C).
How much does it rain in Heunghae?
Heunghae receives on average 1,046 mm of precipitation per year, spread over about 92 rainy days.
Is it sunny in Heunghae?
Heunghae 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 Heunghae?
The heaviest 24-hour snowfall measured in Heunghae between 1940 and 2025 was 21 March 2018, with 18.3 cm.
Are there tropical nights in Heunghae?
Yes: Heunghae has on average 69 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Heunghae?
In Heunghae, between 1940 and 2025, the highest apparent temperature reached 44.0 °C on 28 July 1953, and the lowest was -25.1 °C on 16 January 1967.
Compare Heunghae with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Heunghae