Naju climate — normals and trends
Naju (South Korea) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 13.3 °C and it receives 1,233 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 (0.4 °C). Rainfall peaks in July.
Naju averages 87 frost days, 36 hot days (≥ 30 °C) and 107 rainy days per year.
Naju has warmed by +2.0 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The number of frost days there went from about 100 to 74 per year over the period.
The hottest day of the period reached 38.9 °C (on 23 July 1994) and the coldest -18.2 °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
NajuJeollanam-do
- coords
- 35.03°, 126.72°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.3°C
Average daily high
18.3°C
Average daily low
9.0°C
Annual rainfall
1,233mm
Sunshine / day
8.6h
Mean relative humidity
74%
Average peak wind
16.1km/h
Seasonal range
25.6°C
Frost days (< 0 °C)
87 d/yr
Hot days (≥ 30 °C)
36 d/yr
Rainy days (≥ 1 mm)
107 d/yr
Annual snowfall
11.9 cm
Average feels-like high
17.6 °C
Average feels-like low
7.6 °C
Average peak gust
36.4 km/h
Tropical nights (≥ 20 °C)
66 d/yr
Solar radiation
15.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.61 · 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
38.9 °C
23 July 1994
Coldest day
-18.2 °C
8 January 2021
Wettest day
166 mm
24 June 1985
Windiest day
62.8 km/h
28 August 2012
Strongest gust
153.4 km/h
28 August 2012
Hottest feels-like
44.8 °C
22 July 1994
Coldest feels-like
-23.3 °C
8 January 2021
Snowiest day
12.5 cm
11 February 1994
Sunniest day
13.9 h
29 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 | 6.7 °C | +2.0 °C | 19 mm | -9 mm |
| Feb | 5.5 °C | -1.3 °C | 35 mm | -3 mm |
| Mar | 14.4 °C | +2.4 °C | 44 mm | -17 mm |
| Apr | 20.4 °C | +2.1 °C | 62 mm | -29 mm |
| May | 22.7 °C | -0.6 °C | 117 mm | +13 mm |
| Jun | 28.6 °C | +2.1 °C | 184 mm | +4 mm |
| Jul | 33.0 °C | +4.1 °C | 161 mm | -97 mm |
| Aug | 32.0 °C | +1.9 °C | 214 mm | +24 mm |
| Sep | 28.3 °C | +2.2 °C | 200 mm | +49 mm |
| Oct | 22.7 °C | +1.9 °C | 146 mm | +94 mm |
| Nov | 16.0 °C | +1.8 °C | 17 mm | -33 mm |
| Dec | 9.6 °C | +2.1 °C | 25 mm | -3 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 Naju?
Naju has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 13.3 °C and it receives 1,233 mm of precipitation per year.
What is the hottest day ever recorded in Naju?
The hottest day measured in Naju between 1940 and 2025 was 23 July 1994, reaching 38.9 °C.
What is the coldest day in Naju?
The coldest day measured in Naju between 1940 and 2025 was 8 January 2021, at -18.2 °C.
Does it snow in Naju?
Yes. Naju gets on average 11.9 cm of snow per year and has around 87 frost days.
Has the climate of Naju warmed?
Yes: Naju warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Naju?
The wettest day measured in Naju between 1940 and 2025 was 24 June 1985, with 166 mm of rain in 24 hours.
What was the windiest day in Naju?
The windiest day measured in Naju between 1940 and 2025 was 28 August 2012, with winds reaching 62.8 km/h.
What is the warmest month in Naju?
The warmest month in Naju is August (26.0 °C on average); the coldest is January (0.4 °C).
How much does it rain in Naju?
Naju receives on average 1,233 mm of precipitation per year, spread over about 107 rainy days.
Is it sunny in Naju?
Naju gets on average 8.6 hours of sunshine per day, roughly 3,139 hours per year over 1940-2025.
What is the biggest single-day snowfall in Naju?
The heaviest 24-hour snowfall measured in Naju between 1940 and 2025 was 11 February 1994, with 12.5 cm.
Are there tropical nights in Naju?
Yes: Naju has on average 66 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Naju?
In Naju, between 1940 and 2025, the highest apparent temperature reached 44.8 °C on 22 July 1994, and the lowest was -23.3 °C on 8 January 2021.
Compare Naju with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Naju