Lysekil climate — normals and trends
Lysekil (Sweden) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 7.7 °C and it receives 832 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 (16.8 °C on average) and the coldest is February (-0.8 °C). Rainfall peaks in October.
Lysekil averages 81 frost days, 0 hot days (≥ 30 °C) and 138 rainy days per year.
Lysekil 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 99 to 63 per year over the period.
The hottest day of the period reached 30.4 °C (on 9 August 1975) and the coldest -22.6 °C (on 10 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
LysekilVästra Götaland County
- coords
- 58.27°, 11.44°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.7°C
Average daily high
10.2°C
Average daily low
5.3°C
Annual rainfall
832mm
Sunshine / day
8.3h
Mean relative humidity
79%
Average peak wind
22.3km/h
Seasonal range
17.6°C
Frost days (< 0 °C)
81 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
138 d/yr
Annual snowfall
68.0 cm
Average feels-like high
6.9 °C
Average feels-like low
1.5 °C
Average peak gust
42.4 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.30 · 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
9 August 1975
Coldest day
-22.6 °C
10 January 1987
Wettest day
43 mm
16 October 2014
Windiest day
66.8 km/h
22 September 1969
Strongest gust
125.3 km/h
22 January 1993
Hottest feels-like
32.8 °C
13 July 1941
Coldest feels-like
-30.5 °C
10 January 1987
Snowiest day
19.1 cm
4 April 1998
Sunniest day
17.4 h
12 June 2023
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 | 4.0 °C | +2.6 °C | 111 mm | +44 mm |
| Feb | 2.8 °C | +1.5 °C | 42 mm | -7 mm |
| Mar | 7.3 °C | +3.1 °C | 27 mm | -20 mm |
| Apr | 12.1 °C | +3.3 °C | 27 mm | -22 mm |
| May | 14.2 °C | +0.1 °C | 46 mm | -8 mm |
| Jun | 17.2 °C | -0.4 °C | 68 mm | +2 mm |
| Jul | 22.8 °C | +3.2 °C | 62 mm | -13 mm |
| Aug | 19.4 °C | +0.3 °C | 65 mm | -23 mm |
| Sep | 17.5 °C | +2.0 °C | 119 mm | +34 mm |
| Oct | 12.0 °C | +1.1 °C | 106 mm | +12 mm |
| Nov | 7.3 °C | +1.2 °C | 106 mm | +20 mm |
| Dec | 6.1 °C | +2.9 °C | 89 mm | +15 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 Lysekil?
Lysekil has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 7.7 °C and it receives 832 mm of precipitation per year.
What is the hottest day ever recorded in Lysekil?
The hottest day measured in Lysekil between 1940 and 2025 was 9 August 1975, reaching 30.4 °C.
What is the coldest day in Lysekil?
The coldest day measured in Lysekil between 1940 and 2025 was 10 January 1987, at -22.6 °C.
Does it snow in Lysekil?
Yes. Lysekil gets on average 68.0 cm of snow per year and has around 81 frost days.
Has the climate of Lysekil warmed?
Yes: Lysekil warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Lysekil?
The wettest day measured in Lysekil between 1940 and 2025 was 16 October 2014, with 43 mm of rain in 24 hours.
What was the windiest day in Lysekil?
The windiest day measured in Lysekil between 1940 and 2025 was 22 September 1969, with winds reaching 66.8 km/h.
What is the warmest month in Lysekil?
The warmest month in Lysekil is July (16.8 °C on average); the coldest is February (-0.8 °C).
How much does it rain in Lysekil?
Lysekil receives on average 832 mm of precipitation per year, spread over about 138 rainy days.
Is it sunny in Lysekil?
Lysekil gets on average 8.3 hours of sunshine per day, roughly 3,030 hours per year over 1940-2025.
What is the biggest single-day snowfall in Lysekil?
The heaviest 24-hour snowfall measured in Lysekil between 1940 and 2025 was 4 April 1998, with 19.1 cm.
Are there tropical nights in Lysekil?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Lysekil.
What was the most extreme apparent temperature in Lysekil?
In Lysekil, between 1940 and 2025, the highest apparent temperature reached 32.8 °C on 13 July 1941, and the lowest was -30.5 °C on 10 January 1987.
Compare Lysekil with another city
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Nearby cities
The climate around Lysekil