Nykvarn climate — normals and trends
Nykvarn (Sweden) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 6.1 °C and it receives 566 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 (17.1 °C on average) and the coldest is February (-3.6 °C). Rainfall peaks in August.
Nykvarn averages 132 frost days, 1 hot days (≥ 30 °C) and 117 rainy days per year.
Nykvarn 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 145 to 119 per year over the period.
The hottest day of the period reached 34.2 °C (on 8 August 1975) and the coldest -29.0 °C (on 17 February 1970).
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
NykvarnStockholm County
- coords
- 59.80°, 18.30°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
6.1°C
Average daily high
9.5°C
Average daily low
2.7°C
Annual rainfall
566mm
Sunshine / day
7.7h
Mean relative humidity
79%
Average peak wind
16.4km/h
Seasonal range
20.7°C
Frost days (< 0 °C)
132 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
117 d/yr
Annual snowfall
87.2 cm
Average feels-like high
6.5 °C
Average feels-like low
-0.6 °C
Average peak gust
36.8 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.29 · 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
34.2 °C
8 August 1975
Coldest day
-29.0 °C
17 February 1970
Wettest day
58 mm
22 September 2014
Windiest day
45.0 km/h
2 November 1969
Strongest gust
100.4 km/h
2 November 1969
Hottest feels-like
34.9 °C
6 August 1975
Coldest feels-like
-34.3 °C
17 February 1970
Snowiest day
16.9 cm
21 March 1974
Sunniest day
18.0 h
20 June 1941
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 | 1.3 °C | +2.6 °C | 61 mm | +23 mm |
| Feb | 1.2 °C | +2.0 °C | 8 mm | -22 mm |
| Mar | 7.9 °C | +4.8 °C | 7 mm | -23 mm |
| Apr | 11.4 °C | +2.7 °C | 22 mm | -14 mm |
| May | 13.3 °C | -1.3 °C | 36 mm | -5 mm |
| Jun | 18.9 °C | -0.2 °C | 75 mm | +19 mm |
| Jul | 23.6 °C | +2.3 °C | 98 mm | +25 mm |
| Aug | 19.5 °C | -0.5 °C | 84 mm | +11 mm |
| Sep | 18.0 °C | +2.7 °C | 68 mm | +16 mm |
| Oct | 10.7 °C | +1.1 °C | 52 mm | +5 mm |
| Nov | 5.2 °C | +1.4 °C | 25 mm | -23 mm |
| Dec | 4.7 °C | +4.1 °C | 39 mm | -3 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 Nykvarn?
Nykvarn has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 6.1 °C and it receives 566 mm of precipitation per year.
What is the hottest day ever recorded in Nykvarn?
The hottest day measured in Nykvarn between 1940 and 2025 was 8 August 1975, reaching 34.2 °C.
What is the coldest day in Nykvarn?
The coldest day measured in Nykvarn between 1940 and 2025 was 17 February 1970, at -29.0 °C.
Does it snow in Nykvarn?
Yes. Nykvarn gets on average 87.2 cm of snow per year and has around 132 frost days.
Has the climate of Nykvarn warmed?
Yes: Nykvarn warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Nykvarn?
The wettest day measured in Nykvarn between 1940 and 2025 was 22 September 2014, with 58 mm of rain in 24 hours.
What was the windiest day in Nykvarn?
The windiest day measured in Nykvarn between 1940 and 2025 was 2 November 1969, with winds reaching 45.0 km/h.
What is the warmest month in Nykvarn?
The warmest month in Nykvarn is July (17.1 °C on average); the coldest is February (-3.6 °C).
How much does it rain in Nykvarn?
Nykvarn receives on average 566 mm of precipitation per year, spread over about 117 rainy days.
Is it sunny in Nykvarn?
Nykvarn gets on average 7.7 hours of sunshine per day, roughly 2,811 hours per year over 1940-2025.
What is the biggest single-day snowfall in Nykvarn?
The heaviest 24-hour snowfall measured in Nykvarn between 1940 and 2025 was 21 March 1974, with 16.9 cm.
Are there tropical nights in Nykvarn?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Nykvarn.
What was the most extreme apparent temperature in Nykvarn?
In Nykvarn, between 1940 and 2025, the highest apparent temperature reached 34.9 °C on 6 August 1975, and the lowest was -34.3 °C on 17 February 1970.
Compare Nykvarn with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Nykvarn