Bulle climate — normals and trends
Bulle (Switzerland) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 6.5 °C and it receives 1,594 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 (15.7 °C on average) and the coldest is January (-2.7 °C). Rainfall peaks in August.
Bulle averages 129 frost days, 0 hot days (≥ 30 °C) and 179 rainy days per year.
Bulle has warmed by +2.7 °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 155 to 103 per year over the period.
The hottest day of the period reached 32.3 °C (on 7 July 2015) and the coldest -23.6 °C (on 7 January 1985).
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
BulleCanton of Fribourg
- coords
- 46.62°, 7.06°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
6.5°C
Average daily high
10.5°C
Average daily low
2.7°C
Annual rainfall
1,594mm
Sunshine / day
8.9h
Mean relative humidity
79%
Average peak wind
8.3km/h
Seasonal range
18.4°C
Frost days (< 0 °C)
129 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
179 d/yr
Annual snowfall
291.3 cm
Average feels-like high
8.8 °C
Average feels-like low
0.2 °C
Average peak gust
31.5 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
13.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.7 °C
since 1940
+0.3 °C per decade · r² = 0.65 · 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
-23.6 °C
7 January 1985
Wettest day
79 mm
10 June 1953
Windiest day
27.0 km/h
25 April 1972
Strongest gust
128.9 km/h
26 December 1999
Hottest feels-like
35.0 °C
26 June 2019
Coldest feels-like
-28.4 °C
7 January 1985
Snowiest day
29.9 cm
9 February 1999
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 | 4.0 °C | +3.5 °C | 156 mm | +37 mm |
| Feb | 5.1 °C | +2.6 °C | 56 mm | -57 mm |
| Mar | 9.5 °C | +3.4 °C | 63 mm | -53 mm |
| Apr | 13.8 °C | +4.3 °C | 122 mm | +2 mm |
| May | 15.2 °C | +1.1 °C | 175 mm | +22 mm |
| Jun | 23.5 °C | +5.6 °C | 96 mm | -64 mm |
| Jul | 20.8 °C | +0.6 °C | 214 mm | +55 mm |
| Aug | 22.7 °C | +2.8 °C | 128 mm | -34 mm |
| Sep | 16.6 °C | -0.1 °C | 213 mm | +92 mm |
| Oct | 11.5 °C | -0.6 °C | 164 mm | +54 mm |
| Nov | 7.3 °C | +1.7 °C | 150 mm | +20 mm |
| Dec | 5.4 °C | +4.1 °C | 32 mm | -98 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 Bulle?
Bulle has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 6.5 °C and it receives 1,594 mm of precipitation per year.
What is the hottest day ever recorded in Bulle?
The hottest day measured in Bulle between 1940 and 2025 was 7 July 2015, reaching 32.3 °C.
What is the coldest day in Bulle?
The coldest day measured in Bulle between 1940 and 2025 was 7 January 1985, at -23.6 °C.
Does it snow in Bulle?
Yes. Bulle gets on average 291.3 cm of snow per year and has around 129 frost days.
Has the climate of Bulle warmed?
Yes: Bulle warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Bulle?
The wettest day measured in Bulle between 1940 and 2025 was 10 June 1953, with 79 mm of rain in 24 hours.
What was the windiest day in Bulle?
The windiest day measured in Bulle between 1940 and 2025 was 25 April 1972, with winds reaching 27.0 km/h.
What is the warmest month in Bulle?
The warmest month in Bulle is July (15.7 °C on average); the coldest is January (-2.7 °C).
How much does it rain in Bulle?
Bulle receives on average 1,594 mm of precipitation per year, spread over about 179 rainy days.
Is it sunny in Bulle?
Bulle gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.
What is the biggest single-day snowfall in Bulle?
The heaviest 24-hour snowfall measured in Bulle between 1940 and 2025 was 9 February 1999, with 29.9 cm.
Are there tropical nights in Bulle?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Bulle.
What was the most extreme apparent temperature in Bulle?
In Bulle, between 1940 and 2025, the highest apparent temperature reached 35.0 °C on 26 June 2019, and the lowest was -28.4 °C on 7 January 1985.
Compare Bulle with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Bulle