Changwon climate — normals and trends
Changwon (South Korea) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 13.5 °C and it receives 1,279 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 (0.9 °C). Rainfall peaks in July.
Changwon averages 81 frost days, 25 hot days (≥ 30 °C) and 97 rainy days per year.
Changwon has warmed by +2.7 °C between 1940 and 2025, or +0.31 °C per decade. This trend is statistically significant.
The number of frost days there went from about 99 to 63 per year over the period.
The hottest day of the period reached 37.4 °C (on 21 July 1994) and the coldest -14.7 °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
ChangwonGyeongsangnam-do
- coords
- 35.23°, 128.68°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.5°C
Average daily high
18.2°C
Average daily low
9.4°C
Annual rainfall
1,279mm
Sunshine / day
8.8h
Mean relative humidity
69%
Average peak wind
15.8km/h
Seasonal range
25.0°C
Frost days (< 0 °C)
81 d/yr
Hot days (≥ 30 °C)
25 d/yr
Rainy days (≥ 1 mm)
97 d/yr
Annual snowfall
5.8 cm
Average feels-like high
17.4 °C
Average feels-like low
7.9 °C
Average peak gust
37.8 km/h
Tropical nights (≥ 20 °C)
67 d/yr
Solar radiation
15.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.7 °C
since 1940
+0.3 °C per decade · r² = 0.73 · 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
37.4 °C
21 July 1994
Coldest day
-14.7 °C
16 January 1967
Wettest day
197 mm
23 June 1985
Windiest day
70.5 km/h
31 August 1987
Strongest gust
179.3 km/h
16 July 1987
Hottest feels-like
43.3 °C
3 August 2024
Coldest feels-like
-21.8 °C
16 January 1967
Snowiest day
18.6 cm
9 December 1952
Sunniest day
13.9 h
23 June 1942
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 | 7.2 °C | +1.5 °C | 9 mm | -18 mm |
| Feb | 7.0 °C | -0.9 °C | 27 mm | -13 mm |
| Mar | 14.4 °C | +1.8 °C | 67 mm | -5 mm |
| Apr | 19.8 °C | +1.8 °C | 63 mm | -50 mm |
| May | 21.8 °C | -0.7 °C | 159 mm | +42 mm |
| Jun | 27.4 °C | +2.3 °C | 163 mm | -15 mm |
| Jul | 31.7 °C | +3.7 °C | 151 mm | -94 mm |
| Aug | 32.1 °C | +2.8 °C | 223 mm | +38 mm |
| Sep | 28.2 °C | +2.6 °C | 146 mm | -20 mm |
| Oct | 22.2 °C | +1.4 °C | 123 mm | +61 mm |
| Nov | 16.2 °C | +1.8 °C | 18 mm | -31 mm |
| Dec | 9.9 °C | +1.9 °C | 18 mm | -7 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 Changwon?
Changwon has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 13.5 °C and it receives 1,279 mm of precipitation per year.
What is the hottest day ever recorded in Changwon?
The hottest day measured in Changwon between 1940 and 2025 was 21 July 1994, reaching 37.4 °C.
What is the coldest day in Changwon?
The coldest day measured in Changwon between 1940 and 2025 was 16 January 1967, at -14.7 °C.
Does it snow in Changwon?
Yes. Changwon gets on average 5.8 cm of snow per year and has around 81 frost days.
Has the climate of Changwon warmed?
Yes: Changwon warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Changwon?
The wettest day measured in Changwon between 1940 and 2025 was 23 June 1985, with 197 mm of rain in 24 hours.
What was the windiest day in Changwon?
The windiest day measured in Changwon between 1940 and 2025 was 31 August 1987, with winds reaching 70.5 km/h.
What is the warmest month in Changwon?
The warmest month in Changwon is August (25.9 °C on average); the coldest is January (0.9 °C).
How much does it rain in Changwon?
Changwon receives on average 1,279 mm of precipitation per year, spread over about 97 rainy days.
Is it sunny in Changwon?
Changwon gets on average 8.8 hours of sunshine per day, roughly 3,212 hours per year over 1940-2025.
What is the biggest single-day snowfall in Changwon?
The heaviest 24-hour snowfall measured in Changwon between 1940 and 2025 was 9 December 1952, with 18.6 cm.
Are there tropical nights in Changwon?
Yes: Changwon has on average 67 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Changwon?
In Changwon, between 1940 and 2025, the highest apparent temperature reached 43.3 °C on 3 August 2024, and the lowest was -21.8 °C on 16 January 1967.
Compare Changwon with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Changwon