Yŏnmu climate — normals and trends
Yŏnmu (South Korea) has a hot-summer humid continental, dry winter climate (Dwa) under the Köppen-Geiger classification. Its mean annual temperature is 12.7 °C and it receives 1,220 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 (26.0 °C on average) and the coldest is January (-1.5 °C). Rainfall peaks in July.
Yŏnmu averages 102 frost days, 38 hot days (≥ 30 °C) and 101 rainy days per year.
Yŏnmu has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The number of frost days there went from about 113 to 91 per year over the period.
The hottest day of the period reached 39.6 °C (on 15 August 2018) and the coldest -20.7 °C (on 8 January 2021).
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
YŏnmuChungcheongnam-do
- coords
- 36.13°, 127.10°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.7°C
Average daily high
17.7°C
Average daily low
8.2°C
Annual rainfall
1,220mm
Sunshine / day
8.7h
Mean relative humidity
72%
Average peak wind
14.3km/h
Seasonal range
27.5°C
Frost days (< 0 °C)
102 d/yr
Hot days (≥ 30 °C)
38 d/yr
Rainy days (≥ 1 mm)
101 d/yr
Annual snowfall
16.0 cm
Average feels-like high
16.9 °C
Average feels-like low
6.9 °C
Average peak gust
32.8 km/h
Tropical nights (≥ 20 °C)
64 d/yr
Solar radiation
15.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.51 · 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
39.6 °C
15 August 2018
Coldest day
-20.7 °C
8 January 2021
Wettest day
190 mm
30 September 1998
Windiest day
50.7 km/h
28 August 2012
Strongest gust
112.3 km/h
31 August 2002
Hottest feels-like
44.4 °C
2 August 2018
Coldest feels-like
-25.9 °C
8 January 2021
Snowiest day
12.8 cm
7 January 2001
Sunniest day
14.0 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 | 5.1 °C | +2.1 °C | 18 mm | -8 mm |
| Feb | 4.7 °C | -0.8 °C | 12 mm | -20 mm |
| Mar | 13.8 °C | +2.6 °C | 50 mm | -4 mm |
| Apr | 20.3 °C | +2.1 °C | 58 mm | -27 mm |
| May | 23.1 °C | -0.5 °C | 107 mm | +13 mm |
| Jun | 28.6 °C | +1.5 °C | 318 mm | +171 mm |
| Jul | 32.4 °C | +3.4 °C | 222 mm | -62 mm |
| Aug | 31.7 °C | +1.7 °C | 152 mm | -66 mm |
| Sep | 27.4 °C | +1.6 °C | 270 mm | +119 mm |
| Oct | 21.6 °C | +1.5 °C | 196 mm | +141 mm |
| Nov | 15.0 °C | +2.2 °C | 14 mm | -33 mm |
| Dec | 7.1 °C | +1.5 °C | 36 mm | +8 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 Yŏnmu?
Yŏnmu has a hot-summer humid continental, dry winter climate (Köppen Dwa). Over 1940-2025, the average annual temperature is 12.7 °C and it receives 1,220 mm of precipitation per year.
What is the hottest day ever recorded in Yŏnmu?
The hottest day measured in Yŏnmu between 1940 and 2025 was 15 August 2018, reaching 39.6 °C.
What is the coldest day in Yŏnmu?
The coldest day measured in Yŏnmu between 1940 and 2025 was 8 January 2021, at -20.7 °C.
Does it snow in Yŏnmu?
Yes. Yŏnmu gets on average 16.0 cm of snow per year and has around 102 frost days.
Has the climate of Yŏnmu warmed?
Yes: Yŏnmu warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Yŏnmu?
The wettest day measured in Yŏnmu between 1940 and 2025 was 30 September 1998, with 190 mm of rain in 24 hours.
What was the windiest day in Yŏnmu?
The windiest day measured in Yŏnmu between 1940 and 2025 was 28 August 2012, with winds reaching 50.7 km/h.
What is the warmest month in Yŏnmu?
The warmest month in Yŏnmu is August (26.0 °C on average); the coldest is January (-1.5 °C).
How much does it rain in Yŏnmu?
Yŏnmu receives on average 1,220 mm of precipitation per year, spread over about 101 rainy days.
Is it sunny in Yŏnmu?
Yŏnmu 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 Yŏnmu?
The heaviest 24-hour snowfall measured in Yŏnmu between 1940 and 2025 was 7 January 2001, with 12.8 cm.
Are there tropical nights in Yŏnmu?
Yes: Yŏnmu has on average 64 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Yŏnmu?
In Yŏnmu, between 1940 and 2025, the highest apparent temperature reached 44.4 °C on 2 August 2018, and the lowest was -25.9 °C on 8 January 2021.
Compare Yŏnmu with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Yŏnmu