Saint-Imier climate — normals and trends
Saint-Imier (Switzerland) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.1 °C and it receives 1,521 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 (17.0 °C on average) and the coldest is January (-0.8 °C). Rainfall peaks in August.
Saint-Imier averages 95 frost days, 2 hot days (≥ 30 °C) and 184 rainy days per year.
Saint-Imier has warmed by +2.2 °C between 1940 and 2025, or +0.26 °C per decade. This trend is statistically significant.
The number of frost days there went from about 117 to 73 per year over the period.
The hottest day of the period reached 34.5 °C (on 7 August 2015) and the coldest -23.2 °C (on 20 January 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
Saint-ImierCanton of Bern
- coords
- 47.15°, 7.00°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.1°C
Average daily high
12.0°C
Average daily low
4.6°C
Annual rainfall
1,521mm
Sunshine / day
8.3h
Mean relative humidity
81%
Average peak wind
12.8km/h
Seasonal range
17.8°C
Frost days (< 0 °C)
95 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
184 d/yr
Annual snowfall
141.5 cm
Average feels-like high
10.0 °C
Average feels-like low
2.1 °C
Average peak gust
34.4 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
12.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.2 °C
since 1940
+0.3 °C per decade · r² = 0.54 · 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
34.5 °C
7 August 2015
Coldest day
-23.2 °C
20 January 1940
Wettest day
84 mm
10 June 1953
Windiest day
48.3 km/h
26 December 1999
Strongest gust
142.6 km/h
26 December 1999
Hottest feels-like
37.1 °C
30 June 2019
Coldest feels-like
-29.8 °C
10 February 1956
Snowiest day
33.9 cm
4 March 2006
Sunniest day
15.0 h
19 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 | 4.9 °C | +2.9 °C | 143 mm | +41 mm |
| Feb | 5.8 °C | +2.0 °C | 84 mm | -10 mm |
| Mar | 10.6 °C | +2.5 °C | 64 mm | -39 mm |
| Apr | 15.1 °C | +3.1 °C | 106 mm | -15 mm |
| May | 17.1 °C | +1.0 °C | 137 mm | -24 mm |
| Jun | 24.4 °C | +4.9 °C | 176 mm | +12 mm |
| Jul | 21.9 °C | +0.2 °C | 186 mm | +32 mm |
| Aug | 23.9 °C | +2.7 °C | 199 mm | +32 mm |
| Sep | 17.8 °C | +0.1 °C | 212 mm | +87 mm |
| Oct | 12.7 °C | 0.0 °C | 161 mm | +55 mm |
| Nov | 8.0 °C | +1.5 °C | 158 mm | +45 mm |
| Dec | 5.3 °C | +2.4 °C | 32 mm | -76 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 Saint-Imier?
Saint-Imier has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 8.1 °C and it receives 1,521 mm of precipitation per year.
What is the hottest day ever recorded in Saint-Imier?
The hottest day measured in Saint-Imier between 1940 and 2025 was 7 August 2015, reaching 34.5 °C.
What is the coldest day in Saint-Imier?
The coldest day measured in Saint-Imier between 1940 and 2025 was 20 January 1940, at -23.2 °C.
Does it snow in Saint-Imier?
Yes. Saint-Imier gets on average 141.5 cm of snow per year and has around 95 frost days.
Has the climate of Saint-Imier warmed?
Yes: Saint-Imier warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Saint-Imier?
The wettest day measured in Saint-Imier between 1940 and 2025 was 10 June 1953, with 84 mm of rain in 24 hours.
What was the windiest day in Saint-Imier?
The windiest day measured in Saint-Imier between 1940 and 2025 was 26 December 1999, with winds reaching 48.3 km/h.
What is the warmest month in Saint-Imier?
The warmest month in Saint-Imier is July (17.0 °C on average); the coldest is January (-0.8 °C).
How much does it rain in Saint-Imier?
Saint-Imier receives on average 1,521 mm of precipitation per year, spread over about 184 rainy days.
Is it sunny in Saint-Imier?
Saint-Imier 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 Saint-Imier?
The heaviest 24-hour snowfall measured in Saint-Imier between 1940 and 2025 was 4 March 2006, with 33.9 cm.
Are there tropical nights in Saint-Imier?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Saint-Imier.
What was the most extreme apparent temperature in Saint-Imier?
In Saint-Imier, between 1940 and 2025, the highest apparent temperature reached 37.1 °C on 30 June 2019, and the lowest was -29.8 °C on 10 February 1956.
Compare Saint-Imier with another city
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Nearby cities
The climate around Saint-Imier