Namsa climate — normals and trends
Namsa (South Korea) has a hot-summer humid continental, dry winter climate (Dwa) under the Köppen-Geiger classification. Its mean annual temperature is 12.9 °C and it receives 1,206 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 (26.1 °C on average) and the coldest is January (-0.9 °C). Rainfall peaks in July.
Namsa averages 97 frost days, 36 hot days (≥ 30 °C) and 103 rainy days per year.
Namsa 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 109 to 85 per year over the period.
The hottest day of the period reached 39.1 °C (on 1 August 2018) and the coldest -20.0 °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
NamsaJeollabuk-do
- coords
- 35.93°, 127.05°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.9°C
Average daily high
17.8°C
Average daily low
8.5°C
Annual rainfall
1,206mm
Sunshine / day
8.7h
Mean relative humidity
72%
Average peak wind
14.5km/h
Seasonal range
27.0°C
Frost days (< 0 °C)
97 d/yr
Hot days (≥ 30 °C)
36 d/yr
Rainy days (≥ 1 mm)
103 d/yr
Annual snowfall
15.5 cm
Average feels-like high
17.2 °C
Average feels-like low
7.2 °C
Average peak gust
32.7 km/h
Tropical nights (≥ 20 °C)
66 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 = 0.52 · 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
39.1 °C
1 August 2018
Coldest day
-20.0 °C
8 January 2021
Wettest day
158 mm
18 July 1964
Windiest day
54.1 km/h
3 August 1999
Strongest gust
115.6 km/h
28 August 1986
Hottest feels-like
44.2 °C
1 August 2018
Coldest feels-like
-25.2 °C
8 January 2021
Snowiest day
9.2 cm
31 December 1966
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 | 5.4 °C | +2.0 °C | 21 mm | -7 mm |
| Feb | 4.8 °C | -1.0 °C | 16 mm | -17 mm |
| Mar | 14.0 °C | +2.7 °C | 47 mm | -6 mm |
| Apr | 20.5 °C | +2.3 °C | 56 mm | -27 mm |
| May | 23.2 °C | -0.2 °C | 108 mm | +14 mm |
| Jun | 28.6 °C | +1.8 °C | 332 mm | +181 mm |
| Jul | 32.4 °C | +3.4 °C | 239 mm | -42 mm |
| Aug | 31.5 °C | +1.5 °C | 152 mm | -54 mm |
| Sep | 27.5 °C | +1.6 °C | 236 mm | +89 mm |
| Oct | 22.0 °C | +1.7 °C | 171 mm | +116 mm |
| Nov | 15.2 °C | +2.0 °C | 15 mm | -33 mm |
| Dec | 7.7 °C | +1.6 °C | 37 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 Namsa?
Namsa has a hot-summer humid continental, dry winter climate (Köppen Dwa). Over 1940-2025, the average annual temperature is 12.9 °C and it receives 1,206 mm of precipitation per year.
What is the hottest day ever recorded in Namsa?
The hottest day measured in Namsa between 1940 and 2025 was 1 August 2018, reaching 39.1 °C.
What is the coldest day in Namsa?
The coldest day measured in Namsa between 1940 and 2025 was 8 January 2021, at -20.0 °C.
Does it snow in Namsa?
Yes. Namsa gets on average 15.5 cm of snow per year and has around 97 frost days.
Has the climate of Namsa warmed?
Yes: Namsa warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Namsa?
The wettest day measured in Namsa between 1940 and 2025 was 18 July 1964, with 158 mm of rain in 24 hours.
What was the windiest day in Namsa?
The windiest day measured in Namsa between 1940 and 2025 was 3 August 1999, with winds reaching 54.1 km/h.
What is the warmest month in Namsa?
The warmest month in Namsa is August (26.1 °C on average); the coldest is January (-0.9 °C).
How much does it rain in Namsa?
Namsa receives on average 1,206 mm of precipitation per year, spread over about 103 rainy days.
Is it sunny in Namsa?
Namsa 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 Namsa?
The heaviest 24-hour snowfall measured in Namsa between 1940 and 2025 was 31 December 1966, with 9.2 cm.
Are there tropical nights in Namsa?
Yes: Namsa has on average 66 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Namsa?
In Namsa, between 1940 and 2025, the highest apparent temperature reached 44.2 °C on 1 August 2018, and the lowest was -25.2 °C on 8 January 2021.
Compare Namsa with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Namsa