Namsos climate — normals and trends
Namsos (Norway) has a subarctic climate (Dfc) under the Köppen-Geiger classification. Its mean annual temperature is 4.4 °C and it receives 1,382 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 July (13.9 °C on average) and the coldest is January (-4.5 °C). Rainfall peaks in October.
Namsos averages 136 frost days, 0 hot days (≥ 30 °C) and 200 rainy days per year.
Namsos has warmed by +3.6 °C between 1940 and 2025, or +0.42 °C per decade. This trend is statistically significant.
The number of frost days there went from about 168 to 104 per year over the period.
The hottest day of the period reached 33.1 °C (on 28 July 2019) and the coldest -31.0 °C (on 12 January 1987).
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
NamsosTrøndelag
- coords
- 64.47°, 11.50°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
4.4°C
Average daily high
7.3°C
Average daily low
1.4°C
Annual rainfall
1,382mm
Sunshine / day
6.7h
Mean relative humidity
80%
Average peak wind
16.6km/h
Seasonal range
18.4°C
Frost days (< 0 °C)
136 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
200 d/yr
Annual snowfall
230.5 cm
Average feels-like high
4.2 °C
Average feels-like low
-2.1 °C
Average peak gust
41.4 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
7.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.6 °C
since 1940
+0.4 °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
33.1 °C
28 July 2019
Coldest day
-31.0 °C
12 January 1987
Wettest day
53 mm
31 January 2006
Windiest day
58.8 km/h
3 November 1971
Strongest gust
149.8 km/h
18 January 1953
Hottest feels-like
35.0 °C
27 July 2019
Coldest feels-like
-36.3 °C
12 January 1987
Snowiest day
22.7 cm
26 February 1940
Sunniest day
20.1 h
14 June 2005
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 1.6 °C | +3.7 °C | 146 mm | +25 mm |
| Feb | 3.5 °C | +4.8 °C | 84 mm | -22 mm |
| Mar | 6.3 °C | +4.0 °C | 270 mm | +153 mm |
| Apr | 8.9 °C | +2.5 °C | 153 mm | +54 mm |
| May | 10.4 °C | -1.2 °C | 127 mm | +41 mm |
| Jun | 15.6 °C | +0.5 °C | 157 mm | +56 mm |
| Jul | 23.2 °C | +5.8 °C | 56 mm | -43 mm |
| Aug | 17.3 °C | +0.6 °C | 196 mm | +82 mm |
| Sep | 16.8 °C | +4.1 °C | 104 mm | -44 mm |
| Oct | 9.4 °C | +2.0 °C | 216 mm | +67 mm |
| Nov | 4.1 °C | +1.9 °C | 166 mm | +54 mm |
| Dec | 3.8 °C | +4.2 °C | 139 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 Namsos?
Namsos has a subarctic climate (Köppen Dfc). Over 1940-2025, the average annual temperature is 4.4 °C and it receives 1,382 mm of precipitation per year.
What is the hottest day ever recorded in Namsos?
The hottest day measured in Namsos between 1940 and 2025 was 28 July 2019, reaching 33.1 °C.
What is the coldest day in Namsos?
The coldest day measured in Namsos between 1940 and 2025 was 12 January 1987, at -31.0 °C.
Does it snow in Namsos?
Yes. Namsos gets on average 230.5 cm of snow per year and has around 136 frost days.
Has the climate of Namsos warmed?
Yes: Namsos warmed by +3.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Namsos?
The wettest day measured in Namsos between 1940 and 2025 was 31 January 2006, with 53 mm of rain in 24 hours.
What was the windiest day in Namsos?
The windiest day measured in Namsos between 1940 and 2025 was 3 November 1971, with winds reaching 58.8 km/h.
What is the warmest month in Namsos?
The warmest month in Namsos is July (13.9 °C on average); the coldest is January (-4.5 °C).
How much does it rain in Namsos?
Namsos receives on average 1,382 mm of precipitation per year, spread over about 200 rainy days.
Is it sunny in Namsos?
Namsos gets on average 6.7 hours of sunshine per day, roughly 2,446 hours per year over 1940-2025.
What is the biggest single-day snowfall in Namsos?
The heaviest 24-hour snowfall measured in Namsos between 1940 and 2025 was 26 February 1940, with 22.7 cm.
Are there tropical nights in Namsos?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Namsos.
What was the most extreme apparent temperature in Namsos?
In Namsos, between 1940 and 2025, the highest apparent temperature reached 35.0 °C on 27 July 2019, and the lowest was -36.3 °C on 12 January 1987.
Compare Namsos with another city
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Nearby cities
The climate around Namsos