Orsa climate — normals and trends
Orsa (Sweden) has a subarctic climate (Dfc) under the Köppen-Geiger classification. Its mean annual temperature is 4.0 °C and it receives 697 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 (15.7 °C on average) and the coldest is January (-6.8 °C). Rainfall peaks in August.
Orsa averages 166 frost days, 0 hot days (≥ 30 °C) and 126 rainy days per year.
Orsa has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The number of frost days there went from about 175 to 157 per year over the period.
The hottest day of the period reached 31.5 °C (on 7 August 1975) and the coldest -33.9 °C (on 10 February 1985).
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
OrsaDalarna County
- coords
- 61.12°, 14.62°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
4.0°C
Average daily high
7.4°C
Average daily low
0.5°C
Annual rainfall
697mm
Sunshine / day
7.2h
Mean relative humidity
79%
Average peak wind
14.6km/h
Seasonal range
22.5°C
Frost days (< 0 °C)
166 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
126 d/yr
Annual snowfall
147.9 cm
Average feels-like high
4.2 °C
Average feels-like low
-2.9 °C
Average peak gust
32.9 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.22 · 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
31.5 °C
7 August 1975
Coldest day
-33.9 °C
10 February 1985
Wettest day
53 mm
6 September 1985
Windiest day
45.1 km/h
2 March 1943
Strongest gust
102.2 km/h
30 December 1988
Hottest feels-like
33.5 °C
7 August 1975
Coldest feels-like
-39.3 °C
10 February 1985
Snowiest day
19.7 cm
31 October 2006
Sunniest day
18.0 h
12 June 2025
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 | -1.2 °C | +3.1 °C | 87 mm | +46 mm |
| Feb | -0.7 °C | +2.5 °C | 18 mm | -14 mm |
| Mar | 6.0 °C | +4.4 °C | 10 mm | -22 mm |
| Apr | 10.9 °C | +4.1 °C | 19 mm | -25 mm |
| May | 13.1 °C | -0.1 °C | 57 mm | -1 mm |
| Jun | 17.2 °C | -0.4 °C | 97 mm | +20 mm |
| Jul | 22.2 °C | +2.6 °C | 154 mm | +67 mm |
| Aug | 18.1 °C | 0.0 °C | 73 mm | -16 mm |
| Sep | 15.4 °C | +2.0 °C | 146 mm | +78 mm |
| Oct | 8.7 °C | +1.4 °C | 88 mm | +26 mm |
| Nov | 3.5 °C | +2.4 °C | 51 mm | -9 mm |
| Dec | 2.6 °C | +5.1 °C | 61 mm | +13 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 Orsa?
Orsa has a subarctic climate (Köppen Dfc). Over 1940-2025, the average annual temperature is 4.0 °C and it receives 697 mm of precipitation per year.
What is the hottest day ever recorded in Orsa?
The hottest day measured in Orsa between 1940 and 2025 was 7 August 1975, reaching 31.5 °C.
What is the coldest day in Orsa?
The coldest day measured in Orsa between 1940 and 2025 was 10 February 1985, at -33.9 °C.
Does it snow in Orsa?
Yes. Orsa gets on average 147.9 cm of snow per year and has around 166 frost days.
Has the climate of Orsa warmed?
Yes: Orsa warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Orsa?
The wettest day measured in Orsa between 1940 and 2025 was 6 September 1985, with 53 mm of rain in 24 hours.
What was the windiest day in Orsa?
The windiest day measured in Orsa between 1940 and 2025 was 2 March 1943, with winds reaching 45.1 km/h.
What is the warmest month in Orsa?
The warmest month in Orsa is July (15.7 °C on average); the coldest is January (-6.8 °C).
How much does it rain in Orsa?
Orsa receives on average 697 mm of precipitation per year, spread over about 126 rainy days.
Is it sunny in Orsa?
Orsa gets on average 7.2 hours of sunshine per day, roughly 2,628 hours per year over 1940-2025.
What is the biggest single-day snowfall in Orsa?
The heaviest 24-hour snowfall measured in Orsa between 1940 and 2025 was 31 October 2006, with 19.7 cm.
Are there tropical nights in Orsa?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Orsa.
What was the most extreme apparent temperature in Orsa?
In Orsa, between 1940 and 2025, the highest apparent temperature reached 33.5 °C on 7 August 1975, and the lowest was -39.3 °C on 10 February 1985.
Compare Orsa with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Orsa