Imsil climate — normals and trends
Imsil (South Korea) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 12.1 °C and it receives 1,225 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 (25.1 °C on average) and the coldest is January (-1.8 °C). Rainfall peaks in July.
Imsil averages 107 frost days, 27 hot days (≥ 30 °C) and 113 rainy days per year.
Imsil has warmed by +2.2 °C between 1940 and 2025, or +0.26 °C per decade. This trend is statistically significant.
The number of frost days there went from about 121 to 93 per year over the period.
The hottest day of the period reached 38.3 °C (on 23 July 1994) and the coldest -22.6 °C (on 18 January 1945).
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
ImsilJeollabuk-do
- coords
- 35.61°, 127.28°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.1°C
Average daily high
17.1°C
Average daily low
7.5°C
Annual rainfall
1,225mm
Sunshine / day
8.5h
Mean relative humidity
73%
Average peak wind
13.6km/h
Seasonal range
26.9°C
Frost days (< 0 °C)
107 d/yr
Hot days (≥ 30 °C)
27 d/yr
Rainy days (≥ 1 mm)
113 d/yr
Annual snowfall
25.5 cm
Average feels-like high
16.3 °C
Average feels-like low
6.1 °C
Average peak gust
34.7 km/h
Tropical nights (≥ 20 °C)
55 d/yr
Solar radiation
14.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.2 °C
since 1940
+0.3 °C per decade · r² = 0.60 · 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
38.3 °C
23 July 1994
Coldest day
-22.6 °C
18 January 1945
Wettest day
184 mm
11 July 1972
Windiest day
48.3 km/h
28 August 2012
Strongest gust
141.8 km/h
28 August 2012
Hottest feels-like
42.7 °C
2 August 1996
Coldest feels-like
-27.9 °C
18 January 1945
Snowiest day
12.3 cm
18 February 1986
Sunniest day
13.9 h
24 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 | 4.7 °C | +1.9 °C | 22 mm | -11 mm |
| Feb | 4.1 °C | -1.1 °C | 26 mm | -13 mm |
| Mar | 13.4 °C | +2.5 °C | 55 mm | -8 mm |
| Apr | 19.7 °C | +2.1 °C | 65 mm | -26 mm |
| May | 22.0 °C | -0.6 °C | 125 mm | +24 mm |
| Jun | 27.9 °C | +2.0 °C | 211 mm | +42 mm |
| Jul | 31.9 °C | +3.7 °C | 180 mm | -91 mm |
| Aug | 30.8 °C | +1.6 °C | 184 mm | +4 mm |
| Sep | 27.0 °C | +1.9 °C | 178 mm | +37 mm |
| Oct | 21.5 °C | +2.0 °C | 157 mm | +103 mm |
| Nov | 14.4 °C | +1.9 °C | 20 mm | -31 mm |
| Dec | 7.5 °C | +2.0 °C | 31 mm | -2 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 Imsil?
Imsil has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 12.1 °C and it receives 1,225 mm of precipitation per year.
What is the hottest day ever recorded in Imsil?
The hottest day measured in Imsil between 1940 and 2025 was 23 July 1994, reaching 38.3 °C.
What is the coldest day in Imsil?
The coldest day measured in Imsil between 1940 and 2025 was 18 January 1945, at -22.6 °C.
Does it snow in Imsil?
Yes. Imsil gets on average 25.5 cm of snow per year and has around 107 frost days.
Has the climate of Imsil warmed?
Yes: Imsil warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Imsil?
The wettest day measured in Imsil between 1940 and 2025 was 11 July 1972, with 184 mm of rain in 24 hours.
What was the windiest day in Imsil?
The windiest day measured in Imsil between 1940 and 2025 was 28 August 2012, with winds reaching 48.3 km/h.
What is the warmest month in Imsil?
The warmest month in Imsil is August (25.1 °C on average); the coldest is January (-1.8 °C).
How much does it rain in Imsil?
Imsil receives on average 1,225 mm of precipitation per year, spread over about 113 rainy days.
Is it sunny in Imsil?
Imsil 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 Imsil?
The heaviest 24-hour snowfall measured in Imsil between 1940 and 2025 was 18 February 1986, with 12.3 cm.
Are there tropical nights in Imsil?
Yes: Imsil has on average 55 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Imsil?
In Imsil, between 1940 and 2025, the highest apparent temperature reached 42.7 °C on 2 August 1996, and the lowest was -27.9 °C on 18 January 1945.
Compare Imsil with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Imsil