Nässjö climate — normals and trends
Nässjö (Sweden) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 5.9 °C and it receives 658 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 February (-3.2 °C). Rainfall peaks in July.
Nässjö averages 130 frost days, 0 hot days (≥ 30 °C) and 132 rainy days per year.
Nässjö has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The number of frost days there went from about 142 to 118 per year over the period.
The hottest day of the period reached 34.7 °C (on 21 July 2022) and the coldest -28.1 °C (on 27 January 1942).
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
NässjöJönköping
- coords
- 57.65°, 14.70°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
5.9°C
Average daily high
9.2°C
Average daily low
2.5°C
Annual rainfall
658mm
Sunshine / day
7.1h
Mean relative humidity
82%
Average peak wind
17.0km/h
Seasonal range
19.1°C
Frost days (< 0 °C)
130 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
132 d/yr
Annual snowfall
102.8 cm
Average feels-like high
6.1 °C
Average feels-like low
-0.9 °C
Average peak gust
38.5 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.26 · 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
34.7 °C
21 July 2022
Coldest day
-28.1 °C
27 January 1942
Wettest day
71 mm
8 July 2012
Windiest day
49.9 km/h
22 September 1969
Strongest gust
113.0 km/h
22 January 1993
Hottest feels-like
33.3 °C
21 July 2022
Coldest feels-like
-33.9 °C
10 January 1987
Snowiest day
21.2 cm
4 April 1998
Sunniest day
17.7 h
21 June 2017
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 | 1.7 °C | +2.8 °C | 88 mm | +46 mm |
| Feb | 1.3 °C | +2.0 °C | 13 mm | -21 mm |
| Mar | 7.6 °C | +4.4 °C | 12 mm | -22 mm |
| Apr | 13.0 °C | +4.2 °C | 19 mm | -25 mm |
| May | 14.0 °C | -0.7 °C | 43 mm | -15 mm |
| Jun | 19.1 °C | +0.6 °C | 51 mm | -20 mm |
| Jul | 22.4 °C | +2.4 °C | 101 mm | +18 mm |
| Aug | 19.9 °C | +0.9 °C | 40 mm | -39 mm |
| Sep | 17.3 °C | +2.6 °C | 72 mm | +12 mm |
| Oct | 10.4 °C | +1.1 °C | 53 mm | +1 mm |
| Nov | 4.7 °C | +0.9 °C | 44 mm | -6 mm |
| Dec | 4.1 °C | +3.4 °C | 26 mm | -22 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 Nässjö?
Nässjö has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 5.9 °C and it receives 658 mm of precipitation per year.
What is the hottest day ever recorded in Nässjö?
The hottest day measured in Nässjö between 1940 and 2025 was 21 July 2022, reaching 34.7 °C.
What is the coldest day in Nässjö?
The coldest day measured in Nässjö between 1940 and 2025 was 27 January 1942, at -28.1 °C.
Does it snow in Nässjö?
Yes. Nässjö gets on average 102.8 cm of snow per year and has around 130 frost days.
Has the climate of Nässjö warmed?
Yes: Nässjö warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Nässjö?
The wettest day measured in Nässjö between 1940 and 2025 was 8 July 2012, with 71 mm of rain in 24 hours.
What was the windiest day in Nässjö?
The windiest day measured in Nässjö between 1940 and 2025 was 22 September 1969, with winds reaching 49.9 km/h.
What is the warmest month in Nässjö?
The warmest month in Nässjö is July (15.9 °C on average); the coldest is February (-3.2 °C).
How much does it rain in Nässjö?
Nässjö receives on average 658 mm of precipitation per year, spread over about 132 rainy days.
Is it sunny in Nässjö?
Nässjö gets on average 7.1 hours of sunshine per day, roughly 2,592 hours per year over 1940-2025.
What is the biggest single-day snowfall in Nässjö?
The heaviest 24-hour snowfall measured in Nässjö between 1940 and 2025 was 4 April 1998, with 21.2 cm.
Are there tropical nights in Nässjö?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Nässjö.
What was the most extreme apparent temperature in Nässjö?
In Nässjö, between 1940 and 2025, the highest apparent temperature reached 33.3 °C on 21 July 2022, and the lowest was -33.9 °C on 10 January 1987.
Compare Nässjö with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Nässjö