Lucerne climate — normals and trends
Lucerne (Switzerland) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 7.5 °C and it receives 1,828 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 (16.4 °C on average) and the coldest is January (-1.2 °C). Rainfall peaks in August.
Lucerne averages 110 frost days, 0 hot days (≥ 30 °C) and 190 rainy days per year.
Lucerne has warmed by +2.9 °C between 1940 and 2025, or +0.34 °C per decade. This trend is statistically significant.
The number of frost days there went from about 144 to 76 per year over the period.
The hottest day of the period reached 32.3 °C (on 7 July 2015) and the coldest -21.8 °C (on 14 February 1940).
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
LucerneCanton of Lucerne
- coords
- 47.05°, 8.31°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
7.5°C
Average daily high
11.2°C
Average daily low
4.0°C
Annual rainfall
1,828mm
Sunshine / day
8.8h
Mean relative humidity
79%
Average peak wind
7.8km/h
Seasonal range
17.6°C
Frost days (< 0 °C)
110 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
190 d/yr
Annual snowfall
287.2 cm
Average feels-like high
9.7 °C
Average feels-like low
1.7 °C
Average peak gust
30.4 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
12.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.9 °C
since 1940
+0.3 °C per decade · r² = 0.68 · 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
32.3 °C
7 July 2015
Coldest day
-21.8 °C
14 February 1940
Wettest day
93 mm
28 July 2019
Windiest day
26.6 km/h
26 December 1999
Strongest gust
141.8 km/h
27 February 1990
Hottest feels-like
35.4 °C
26 June 2019
Coldest feels-like
-26.7 °C
10 February 1956
Snowiest day
27.0 cm
4 April 2019
Sunniest day
15.0 h
3 June 1940
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 | 3.7 °C | +2.4 °C | 111 mm | -8 mm |
| Feb | 5.0 °C | +1.9 °C | 46 mm | -68 mm |
| Mar | 9.9 °C | +3.0 °C | 88 mm | -38 mm |
| Apr | 14.3 °C | +3.8 °C | 126 mm | -18 mm |
| May | 15.9 °C | +0.9 °C | 206 mm | +26 mm |
| Jun | 23.6 °C | +5.0 °C | 101 mm | -99 mm |
| Jul | 20.5 °C | -0.2 °C | 309 mm | +108 mm |
| Aug | 22.6 °C | +2.4 °C | 230 mm | +23 mm |
| Sep | 17.0 °C | -0.1 °C | 243 mm | +86 mm |
| Oct | 11.9 °C | -0.4 °C | 116 mm | -9 mm |
| Nov | 7.4 °C | +1.3 °C | 134 mm | +1 mm |
| Dec | 4.6 °C | +2.4 °C | 34 mm | -91 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 Lucerne?
Lucerne has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 7.5 °C and it receives 1,828 mm of precipitation per year.
What is the hottest day ever recorded in Lucerne?
The hottest day measured in Lucerne between 1940 and 2025 was 7 July 2015, reaching 32.3 °C.
What is the coldest day in Lucerne?
The coldest day measured in Lucerne between 1940 and 2025 was 14 February 1940, at -21.8 °C.
Does it snow in Lucerne?
Yes. Lucerne gets on average 287.2 cm of snow per year and has around 110 frost days.
Has the climate of Lucerne warmed?
Yes: Lucerne warmed by +2.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Lucerne?
The wettest day measured in Lucerne between 1940 and 2025 was 28 July 2019, with 93 mm of rain in 24 hours.
What was the windiest day in Lucerne?
The windiest day measured in Lucerne between 1940 and 2025 was 26 December 1999, with winds reaching 26.6 km/h.
What is the warmest month in Lucerne?
The warmest month in Lucerne is July (16.4 °C on average); the coldest is January (-1.2 °C).
How much does it rain in Lucerne?
Lucerne receives on average 1,828 mm of precipitation per year, spread over about 190 rainy days.
Is it sunny in Lucerne?
Lucerne gets on average 8.8 hours of sunshine per day, roughly 3,212 hours per year over 1940-2025.
What is the biggest single-day snowfall in Lucerne?
The heaviest 24-hour snowfall measured in Lucerne between 1940 and 2025 was 4 April 2019, with 27.0 cm.
Are there tropical nights in Lucerne?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Lucerne.
What was the most extreme apparent temperature in Lucerne?
In Lucerne, between 1940 and 2025, the highest apparent temperature reached 35.4 °C on 26 June 2019, and the lowest was -26.7 °C on 10 February 1956.
Compare Lucerne with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Lucerne