Mamers climate — normals and trends
Mamers (France) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.9 °C and it receives 669 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 (18.6 °C on average) and the coldest is January (3.8 °C). Rainfall peaks in May.
Mamers averages 41 frost days, 5 hot days (≥ 30 °C) and 123 rainy days per year.
Mamers has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The number of frost days there went from about 53 to 29 per year over the period.
The hottest day of the period reached 38.7 °C (on 18 July 2022) and the coldest -19.4 °C (on 21 January 1942).
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
MamersPays de la Loire Region
- coords
- 48.35°, 0.37°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.9°C
Average daily high
14.8°C
Average daily low
7.3°C
Annual rainfall
669mm
Sunshine / day
8.0h
Mean relative humidity
79%
Average peak wind
18.1km/h
Seasonal range
14.8°C
Frost days (< 0 °C)
41 d/yr
Hot days (≥ 30 °C)
5 d/yr
Rainy days (≥ 1 mm)
123 d/yr
Annual snowfall
10.8 cm
Average feels-like high
12.6 °C
Average feels-like low
4.7 °C
Average peak gust
36.4 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
11.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.36 · 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
38.7 °C
18 July 2022
Coldest day
-19.4 °C
21 January 1942
Wettest day
60 mm
15 September 2006
Windiest day
63.7 km/h
26 December 1999
Strongest gust
128.2 km/h
26 December 1999
Hottest feels-like
40.4 °C
30 July 2024
Coldest feels-like
-24.4 °C
21 January 1942
Snowiest day
13.4 cm
23 February 1942
Sunniest day
15.9 h
19 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 | 6.8 °C | +0.5 °C | 155 mm | +94 mm |
| Feb | 8.2 °C | +0.5 °C | 67 mm | +14 mm |
| Mar | 13.1 °C | +2.0 °C | 28 mm | -27 mm |
| Apr | 18.2 °C | +4.1 °C | 34 mm | -20 mm |
| May | 20.5 °C | +2.9 °C | 32 mm | -34 mm |
| Jun | 26.4 °C | +5.3 °C | 44 mm | -7 mm |
| Jul | 25.6 °C | +2.4 °C | 60 mm | +16 mm |
| Aug | 26.0 °C | +3.0 °C | 35 mm | -11 mm |
| Sep | 20.0 °C | -0.1 °C | 43 mm | -7 mm |
| Oct | 16.4 °C | +0.9 °C | 55 mm | -7 mm |
| Nov | 12.1 °C | +2.0 °C | 69 mm | +5 mm |
| Dec | 9.1 °C | +1.9 °C | 44 mm | -18 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 Mamers?
Mamers has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 10.9 °C and it receives 669 mm of precipitation per year.
What is the hottest day ever recorded in Mamers?
The hottest day measured in Mamers between 1940 and 2025 was 18 July 2022, reaching 38.7 °C.
What is the coldest day in Mamers?
The coldest day measured in Mamers between 1940 and 2025 was 21 January 1942, at -19.4 °C.
Does it snow in Mamers?
Yes. Mamers gets on average 10.8 cm of snow per year and has around 41 frost days.
Has the climate of Mamers warmed?
Yes: Mamers warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Mamers?
The wettest day measured in Mamers between 1940 and 2025 was 15 September 2006, with 60 mm of rain in 24 hours.
What was the windiest day in Mamers?
The windiest day measured in Mamers between 1940 and 2025 was 26 December 1999, with winds reaching 63.7 km/h.
What is the warmest month in Mamers?
The warmest month in Mamers is July (18.6 °C on average); the coldest is January (3.8 °C).
How much does it rain in Mamers?
Mamers receives on average 669 mm of precipitation per year, spread over about 123 rainy days.
Is it sunny in Mamers?
Mamers gets on average 8.0 hours of sunshine per day, roughly 2,920 hours per year over 1940-2025.
What is the biggest single-day snowfall in Mamers?
The heaviest 24-hour snowfall measured in Mamers between 1940 and 2025 was 23 February 1942, with 13.4 cm.
Are there tropical nights in Mamers?
Yes: Mamers has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Mamers?
In Mamers, between 1940 and 2025, the highest apparent temperature reached 40.4 °C on 30 July 2024, and the lowest was -24.4 °C on 21 January 1942.
Compare Mamers with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Mamers