Guérande climate — normals and trends
Guérande (France) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 12.6 °C and it receives 683 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 August (18.4 °C on average) and the coldest is January (7.2 °C). Rainfall peaks in December.
Guérande averages 5 frost days, 0 hot days (≥ 30 °C) and 123 rainy days per year.
Guérande has warmed by +1.3 °C between 1940 and 2025, or +0.15 °C per decade. This trend is statistically significant.
The number of frost days there went from about 9 to 1 per year over the period.
The hottest day of the period reached 31.3 °C (on 18 July 2022) and the coldest -8.7 °C (on 20 January 1963).
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
GuérandePays de la Loire Region
- coords
- 47.33°, -2.43°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.6°C
Average daily high
14.3°C
Average daily low
10.9°C
Annual rainfall
683mm
Sunshine / day
9.2h
Mean relative humidity
81%
Average peak wind
26.2km/h
Seasonal range
11.2°C
Frost days (< 0 °C)
5 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
123 d/yr
Annual snowfall
1.9 cm
Average feels-like high
12.2 °C
Average feels-like low
7.7 °C
Average peak gust
41.2 km/h
Tropical nights (≥ 20 °C)
2 d/yr
Solar radiation
13.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.3 °C
since 1940
+0.2 °C per decade · r² = 0.33 · 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
31.3 °C
18 July 2022
Coldest day
-8.7 °C
20 January 1963
Wettest day
58 mm
19 July 2025
Windiest day
82.9 km/h
11 March 1963
Strongest gust
131.4 km/h
16 December 2011
Hottest feels-like
36.2 °C
9 August 2003
Coldest feels-like
-17.5 °C
19 January 1963
Snowiest day
8.2 cm
7 February 1986
Sunniest day
15.4 h
19 June 2025
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 | 9.4 °C | +0.7 °C | 200 mm | +126 mm |
| Feb | 9.5 °C | +0.7 °C | 42 mm | -17 mm |
| Mar | 12.1 °C | +1.5 °C | 30 mm | -25 mm |
| Apr | 15.6 °C | +2.8 °C | 71 mm | +24 mm |
| May | 17.7 °C | +2.1 °C | 39 mm | -15 mm |
| Jun | 21.4 °C | +2.9 °C | 36 mm | -4 mm |
| Jul | 21.6 °C | +1.5 °C | 126 mm | +91 mm |
| Aug | 22.3 °C | +2.1 °C | 22 mm | -16 mm |
| Sep | 18.6 °C | -0.1 °C | 46 mm | -4 mm |
| Oct | 17.0 °C | +1.2 °C | 57 mm | -17 mm |
| Nov | 13.9 °C | +1.8 °C | 82 mm | +2 mm |
| Dec | 10.9 °C | +1.1 °C | 94 mm | +13 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 Guérande?
Guérande has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 12.6 °C and it receives 683 mm of precipitation per year.
What is the hottest day ever recorded in Guérande?
The hottest day measured in Guérande between 1940 and 2025 was 18 July 2022, reaching 31.3 °C.
What is the coldest day in Guérande?
The coldest day measured in Guérande between 1940 and 2025 was 20 January 1963, at -8.7 °C.
Does it snow in Guérande?
Yes. Guérande gets on average 1.9 cm of snow per year and has around 5 frost days.
Has the climate of Guérande warmed?
Yes: Guérande warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Guérande?
The wettest day measured in Guérande between 1940 and 2025 was 19 July 2025, with 58 mm of rain in 24 hours.
What was the windiest day in Guérande?
The windiest day measured in Guérande between 1940 and 2025 was 11 March 1963, with winds reaching 82.9 km/h.
What is the warmest month in Guérande?
The warmest month in Guérande is August (18.4 °C on average); the coldest is January (7.2 °C).
How much does it rain in Guérande?
Guérande receives on average 683 mm of precipitation per year, spread over about 123 rainy days.
Is it sunny in Guérande?
Guérande gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.
What is the biggest single-day snowfall in Guérande?
The heaviest 24-hour snowfall measured in Guérande between 1940 and 2025 was 7 February 1986, with 8.2 cm.
Are there tropical nights in Guérande?
Yes: Guérande has on average 2 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Guérande?
In Guérande, between 1940 and 2025, the highest apparent temperature reached 36.2 °C on 9 August 2003, and the lowest was -17.5 °C on 19 January 1963.
Compare Guérande with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Guérande