Härnösand climate — normals and trends
Härnösand (Sweden) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 4.4 °C and it receives 640 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 (15.9 °C on average) and the coldest is January (-5.5 °C). Rainfall peaks in August.
Härnösand averages 152 frost days, 0 hot days (≥ 30 °C) and 121 rainy days per year.
Härnösand 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 163 to 141 per year over the period.
The hottest day of the period reached 30.1 °C (on 23 July 2014) and the coldest -29.2 °C (on 7 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
HärnösandVästernorrland County
- coords
- 62.63°, 17.94°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
4.4°C
Average daily high
7.2°C
Average daily low
1.3°C
Annual rainfall
640mm
Sunshine / day
7.8h
Mean relative humidity
78%
Average peak wind
20.1km/h
Seasonal range
21.4°C
Frost days (< 0 °C)
152 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
121 d/yr
Annual snowfall
153.6 cm
Average feels-like high
3.6 °C
Average feels-like low
-2.7 °C
Average peak gust
38.8 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.27 · 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
30.1 °C
23 July 2014
Coldest day
-29.2 °C
7 January 1987
Wettest day
48 mm
12 September 1988
Windiest day
55.0 km/h
26 December 2011
Strongest gust
111.2 km/h
1 March 1943
Hottest feels-like
31.4 °C
23 July 2014
Coldest feels-like
-35.6 °C
10 January 1987
Snowiest day
26.5 cm
12 January 2021
Sunniest day
19.2 h
21 June 2012
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 | +2.9 °C | 82 mm | +31 mm |
| Feb | 0.1 °C | +3.1 °C | 19 mm | -18 mm |
| Mar | 5.3 °C | +4.6 °C | 13 mm | -25 mm |
| Apr | 8.9 °C | +3.4 °C | 21 mm | -19 mm |
| May | 10.7 °C | -0.5 °C | 70 mm | +30 mm |
| Jun | 15.8 °C | -0.2 °C | 68 mm | +21 mm |
| Jul | 22.7 °C | +3.5 °C | 56 mm | -8 mm |
| Aug | 18.1 °C | +0.1 °C | 57 mm | -16 mm |
| Sep | 15.5 °C | +2.0 °C | 125 mm | +61 mm |
| Oct | 9.3 °C | +1.8 °C | 87 mm | +26 mm |
| Nov | 2.7 °C | +0.9 °C | 39 mm | -26 mm |
| Dec | 3.1 °C | +4.1 °C | 85 mm | +24 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 Härnösand?
Härnösand has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 4.4 °C and it receives 640 mm of precipitation per year.
What is the hottest day ever recorded in Härnösand?
The hottest day measured in Härnösand between 1940 and 2025 was 23 July 2014, reaching 30.1 °C.
What is the coldest day in Härnösand?
The coldest day measured in Härnösand between 1940 and 2025 was 7 January 1987, at -29.2 °C.
Does it snow in Härnösand?
Yes. Härnösand gets on average 153.6 cm of snow per year and has around 152 frost days.
Has the climate of Härnösand warmed?
Yes: Härnösand warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Härnösand?
The wettest day measured in Härnösand between 1940 and 2025 was 12 September 1988, with 48 mm of rain in 24 hours.
What was the windiest day in Härnösand?
The windiest day measured in Härnösand between 1940 and 2025 was 26 December 2011, with winds reaching 55.0 km/h.
What is the warmest month in Härnösand?
The warmest month in Härnösand is July (15.9 °C on average); the coldest is January (-5.5 °C).
How much does it rain in Härnösand?
Härnösand receives on average 640 mm of precipitation per year, spread over about 121 rainy days.
Is it sunny in Härnösand?
Härnösand gets on average 7.8 hours of sunshine per day, roughly 2,847 hours per year over 1940-2025.
What is the biggest single-day snowfall in Härnösand?
The heaviest 24-hour snowfall measured in Härnösand between 1940 and 2025 was 12 January 2021, with 26.5 cm.
Are there tropical nights in Härnösand?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Härnösand.
What was the most extreme apparent temperature in Härnösand?
In Härnösand, between 1940 and 2025, the highest apparent temperature reached 31.4 °C on 23 July 2014, and the lowest was -35.6 °C on 10 January 1987.
Compare Härnösand with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Härnösand