Jeonju climate — normals and trends
Jeonju (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 1,244 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 (-1.9 °C). Rainfall peaks in July.
Jeonju averages 103 frost days, 25 hot days (≥ 30 °C) and 115 rainy days per year.
Jeonju has warmed by +2.2 °C between 1940 and 2025, or +0.25 °C per decade. This trend is statistically significant.
The number of frost days there went from about 116 to 90 per year over the period.
The hottest day of the period reached 36.8 °C (on 23 July 1994) and the coldest -22.0 °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
JeonjuJeollabuk-do
- coords
- 35.82°, 127.15°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.1°C
Average daily high
16.9°C
Average daily low
7.7°C
Annual rainfall
1,244mm
Sunshine / day
8.7h
Mean relative humidity
72%
Average peak wind
13.7km/h
Seasonal range
27.0°C
Frost days (< 0 °C)
103 d/yr
Hot days (≥ 30 °C)
25 d/yr
Rainy days (≥ 1 mm)
115 d/yr
Annual snowfall
27.7 cm
Average feels-like high
16.1 °C
Average feels-like low
6.3 °C
Average peak gust
34.6 km/h
Tropical nights (≥ 20 °C)
56 d/yr
Solar radiation
14.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.2 °C
since 1940
+0.3 °C per decade · r² = 0.59 · 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
36.8 °C
23 July 1994
Coldest day
-22.0 °C
18 January 1945
Wettest day
136 mm
30 June 1956
Windiest day
49.5 km/h
28 August 2012
Strongest gust
135.0 km/h
28 August 1986
Hottest feels-like
42.5 °C
2 August 1996
Coldest feels-like
-27.6 °C
18 January 1945
Snowiest day
11.4 cm
18 February 1986
Sunniest day
13.9 h
20 June 1944
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 | 4.4 °C | +1.9 °C | 26 mm | -7 mm |
| Feb | 3.9 °C | -1.0 °C | 22 mm | -17 mm |
| Mar | 13.2 °C | +2.6 °C | 54 mm | -8 mm |
| Apr | 19.6 °C | +2.2 °C | 65 mm | -24 mm |
| May | 22.0 °C | -0.4 °C | 121 mm | +22 mm |
| Jun | 27.7 °C | +2.0 °C | 253 mm | +90 mm |
| Jul | 31.6 °C | +3.5 °C | 205 mm | -74 mm |
| Aug | 30.6 °C | +1.5 °C | 145 mm | -47 mm |
| Sep | 26.8 °C | +1.8 °C | 207 mm | +61 mm |
| Oct | 21.3 °C | +1.9 °C | 169 mm | +113 mm |
| Nov | 14.2 °C | +1.9 °C | 21 mm | -32 mm |
| Dec | 7.1 °C | +1.9 °C | 36 mm | +1 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 Jeonju?
Jeonju has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 12.1 °C and it receives 1,244 mm of precipitation per year.
What is the hottest day ever recorded in Jeonju?
The hottest day measured in Jeonju between 1940 and 2025 was 23 July 1994, reaching 36.8 °C.
What is the coldest day in Jeonju?
The coldest day measured in Jeonju between 1940 and 2025 was 18 January 1945, at -22.0 °C.
Does it snow in Jeonju?
Yes. Jeonju gets on average 27.7 cm of snow per year and has around 103 frost days.
Has the climate of Jeonju warmed?
Yes: Jeonju warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Jeonju?
The wettest day measured in Jeonju between 1940 and 2025 was 30 June 1956, with 136 mm of rain in 24 hours.
What was the windiest day in Jeonju?
The windiest day measured in Jeonju between 1940 and 2025 was 28 August 2012, with winds reaching 49.5 km/h.
What is the warmest month in Jeonju?
The warmest month in Jeonju is August (25.1 °C on average); the coldest is January (-1.9 °C).
How much does it rain in Jeonju?
Jeonju receives on average 1,244 mm of precipitation per year, spread over about 115 rainy days.
Is it sunny in Jeonju?
Jeonju 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 Jeonju?
The heaviest 24-hour snowfall measured in Jeonju between 1940 and 2025 was 18 February 1986, with 11.4 cm.
Are there tropical nights in Jeonju?
Yes: Jeonju has on average 56 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Jeonju?
In Jeonju, between 1940 and 2025, the highest apparent temperature reached 42.5 °C on 2 August 1996, and the lowest was -27.6 °C on 18 January 1945.
Compare Jeonju with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Jeonju