Sandnessjøen climate — normals and trends
Sandnessjøen (Norway) has a subarctic climate (Dfc) under the Köppen-Geiger classification. Its mean annual temperature is 3.5 °C and it receives 1,807 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 (13.1 °C on average) and the coldest is January (-4.9 °C). Rainfall peaks in October.
Sandnessjøen averages 145 frost days, 0 hot days (≥ 30 °C) and 210 rainy days per year.
Sandnessjøen has warmed by +3.3 °C between 1940 and 2025, or +0.38 °C per decade. This trend is statistically significant.
The number of frost days there went from about 173 to 117 per year over the period.
The hottest day of the period reached 30.4 °C (on 27 July 2019) and the coldest -26.1 °C (on 4 February 1966).
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
SandnessjøenNordland
- coords
- 66.02°, 12.63°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
3.5°C
Average daily high
5.8°C
Average daily low
1.1°C
Annual rainfall
1,807mm
Sunshine / day
6.9h
Mean relative humidity
81%
Average peak wind
18.9km/h
Seasonal range
18.0°C
Frost days (< 0 °C)
145 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
210 d/yr
Annual snowfall
338.5 cm
Average feels-like high
2.2 °C
Average feels-like low
-2.9 °C
Average peak gust
40.8 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
8.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.3 °C
since 1940
+0.4 °C per decade · r² = 0.56 · 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
30.4 °C
27 July 2019
Coldest day
-26.1 °C
4 February 1966
Wettest day
65 mm
15 September 2003
Windiest day
66.0 km/h
14 January 1982
Strongest gust
149.8 km/h
15 January 1982
Hottest feels-like
32.5 °C
27 July 2019
Coldest feels-like
-32.3 °C
4 February 1966
Snowiest day
20.0 cm
12 February 1943
Sunniest day
21.0 h
29 June 1945
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 | 0.3 °C | +3.1 °C | 294 mm | +125 mm |
| Feb | 2.1 °C | +4.5 °C | 113 mm | -33 mm |
| Mar | 3.7 °C | +3.2 °C | 293 mm | +137 mm |
| Apr | 6.3 °C | +2.1 °C | 200 mm | +77 mm |
| May | 8.9 °C | +0.1 °C | 129 mm | +28 mm |
| Jun | 13.5 °C | +0.8 °C | 188 mm | +74 mm |
| Jul | 20.7 °C | +5.1 °C | 56 mm | -63 mm |
| Aug | 16.1 °C | +1.1 °C | 251 mm | +110 mm |
| Sep | 15.2 °C | +3.8 °C | 133 mm | -56 mm |
| Oct | 8.0 °C | +1.7 °C | 256 mm | +52 mm |
| Nov | 1.6 °C | +0.3 °C | 208 mm | +48 mm |
| Dec | 2.6 °C | +3.7 °C | 197 mm | +14 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 Sandnessjøen?
Sandnessjøen has a subarctic climate (Köppen Dfc). Over 1940-2025, the average annual temperature is 3.5 °C and it receives 1,807 mm of precipitation per year.
What is the hottest day ever recorded in Sandnessjøen?
The hottest day measured in Sandnessjøen between 1940 and 2025 was 27 July 2019, reaching 30.4 °C.
What is the coldest day in Sandnessjøen?
The coldest day measured in Sandnessjøen between 1940 and 2025 was 4 February 1966, at -26.1 °C.
Does it snow in Sandnessjøen?
Yes. Sandnessjøen gets on average 338.5 cm of snow per year and has around 145 frost days.
Has the climate of Sandnessjøen warmed?
Yes: Sandnessjøen warmed by +3.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Sandnessjøen?
The wettest day measured in Sandnessjøen between 1940 and 2025 was 15 September 2003, with 65 mm of rain in 24 hours.
What was the windiest day in Sandnessjøen?
The windiest day measured in Sandnessjøen between 1940 and 2025 was 14 January 1982, with winds reaching 66.0 km/h.
What is the warmest month in Sandnessjøen?
The warmest month in Sandnessjøen is July (13.1 °C on average); the coldest is January (-4.9 °C).
How much does it rain in Sandnessjøen?
Sandnessjøen receives on average 1,807 mm of precipitation per year, spread over about 210 rainy days.
Is it sunny in Sandnessjøen?
Sandnessjøen gets on average 6.9 hours of sunshine per day, roughly 2,519 hours per year over 1940-2025.
What is the biggest single-day snowfall in Sandnessjøen?
The heaviest 24-hour snowfall measured in Sandnessjøen between 1940 and 2025 was 12 February 1943, with 20.0 cm.
Are there tropical nights in Sandnessjøen?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Sandnessjøen.
What was the most extreme apparent temperature in Sandnessjøen?
In Sandnessjøen, between 1940 and 2025, the highest apparent temperature reached 32.5 °C on 27 July 2019, and the lowest was -32.3 °C on 4 February 1966.
Compare Sandnessjøen with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Sandnessjøen