Prilly climate — normals and trends
Prilly (Switzerland) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.5 °C and it receives 1,293 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 (18.2 °C on average) and the coldest is January (1.3 °C). Rainfall peaks in August.
Prilly averages 55 frost days, 1 hot days (≥ 30 °C) and 164 rainy days per year.
Prilly has warmed by +2.6 °C between 1940 and 2025, or +0.31 °C per decade. This trend is statistically significant.
The number of frost days there went from about 84 to 26 per year over the period.
The hottest day of the period reached 33.0 °C (on 7 July 2015) and the coldest -18.8 °C (on 10 February 1956).
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
PrillyCanton of Vaud
- coords
- 46.54°, 6.60°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.5°C
Average daily high
12.5°C
Average daily low
6.6°C
Annual rainfall
1,293mm
Sunshine / day
8.8h
Mean relative humidity
79%
Average peak wind
9.8km/h
Seasonal range
16.9°C
Frost days (< 0 °C)
55 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
164 d/yr
Annual snowfall
117.6 cm
Average feels-like high
11.0 °C
Average feels-like low
4.8 °C
Average peak gust
29.1 km/h
Tropical nights (≥ 20 °C)
2 d/yr
Solar radiation
12.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.6 °C
since 1940
+0.3 °C per decade · r² = 0.66 · 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
33.0 °C
7 July 2015
Coldest day
-18.8 °C
10 February 1956
Wettest day
84 mm
10 June 1953
Windiest day
38.0 km/h
25 April 1972
Strongest gust
125.3 km/h
26 December 1999
Hottest feels-like
36.4 °C
26 June 2019
Coldest feels-like
-25.8 °C
10 February 1956
Snowiest day
27.7 cm
17 April 2005
Sunniest day
15.0 h
20 May 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 | 6.0 °C | +2.5 °C | 166 mm | +61 mm |
| Feb | 6.8 °C | +2.1 °C | 48 mm | -47 mm |
| Mar | 10.4 °C | +2.4 °C | 40 mm | -54 mm |
| Apr | 14.7 °C | +3.2 °C | 85 mm | -12 mm |
| May | 16.7 °C | +1.3 °C | 118 mm | +4 mm |
| Jun | 24.2 °C | +5.1 °C | 120 mm | +5 mm |
| Jul | 22.7 °C | +1.0 °C | 158 mm | +42 mm |
| Aug | 24.5 °C | +3.0 °C | 91 mm | -33 mm |
| Sep | 18.3 °C | 0.0 °C | 183 mm | +79 mm |
| Oct | 12.9 °C | -0.9 °C | 159 mm | +60 mm |
| Nov | 9.0 °C | +0.9 °C | 140 mm | +24 mm |
| Dec | 6.5 °C | +1.9 °C | 26 mm | -86 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 Prilly?
Prilly has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.5 °C and it receives 1,293 mm of precipitation per year.
What is the hottest day ever recorded in Prilly?
The hottest day measured in Prilly between 1940 and 2025 was 7 July 2015, reaching 33.0 °C.
What is the coldest day in Prilly?
The coldest day measured in Prilly between 1940 and 2025 was 10 February 1956, at -18.8 °C.
Does it snow in Prilly?
Yes. Prilly gets on average 117.6 cm of snow per year and has around 55 frost days.
Has the climate of Prilly warmed?
Yes: Prilly warmed by +2.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Prilly?
The wettest day measured in Prilly between 1940 and 2025 was 10 June 1953, with 84 mm of rain in 24 hours.
What was the windiest day in Prilly?
The windiest day measured in Prilly between 1940 and 2025 was 25 April 1972, with winds reaching 38.0 km/h.
What is the warmest month in Prilly?
The warmest month in Prilly is July (18.2 °C on average); the coldest is January (1.3 °C).
How much does it rain in Prilly?
Prilly receives on average 1,293 mm of precipitation per year, spread over about 164 rainy days.
Is it sunny in Prilly?
Prilly 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 Prilly?
The heaviest 24-hour snowfall measured in Prilly between 1940 and 2025 was 17 April 2005, with 27.7 cm.
Are there tropical nights in Prilly?
Yes: Prilly has on average 2 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Prilly?
In Prilly, between 1940 and 2025, the highest apparent temperature reached 36.4 °C on 26 June 2019, and the lowest was -25.8 °C on 10 February 1956.
Compare Prilly with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Prilly