Trégunc climate — normals and trends
Trégunc (France) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 12.4 °C and it receives 790 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 (17.5 °C on average) and the coldest is February (7.7 °C). Rainfall peaks in December.
Trégunc averages 2 frost days, 0 hot days (≥ 30 °C) and 132 rainy days per year.
Trégunc has warmed by +1.1 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.
The number of frost days there went from about 4 to 0 per year over the period.
The hottest day of the period reached 27.9 °C (on 18 July 2022) and the coldest -6.2 °C (on 13 January 1987).
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
TréguncBrittany Region
- coords
- 47.86°, -3.85°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.4°C
Average daily high
13.8°C
Average daily low
11.0°C
Annual rainfall
790mm
Sunshine / day
9.0h
Mean relative humidity
81%
Average peak wind
27.8km/h
Seasonal range
9.8°C
Frost days (< 0 °C)
2 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
132 d/yr
Annual snowfall
1.6 cm
Average feels-like high
11.5 °C
Average feels-like low
7.5 °C
Average peak gust
42.6 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
12.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.1 °C
since 1940
+0.1 °C per decade · r² = 0.30 · 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
27.9 °C
18 July 2022
Coldest day
-6.2 °C
13 January 1987
Wettest day
58 mm
21 August 1944
Windiest day
90.0 km/h
16 October 1987
Strongest gust
145.8 km/h
2 November 2023
Hottest feels-like
31.3 °C
9 August 2003
Coldest feels-like
-15.7 °C
13 January 1987
Snowiest day
6.9 cm
18 February 1986
Sunniest day
15.3 h
8 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 | 9.6 °C | +0.3 °C | 196 mm | +105 mm |
| Feb | 9.6 °C | +0.5 °C | 56 mm | -18 mm |
| Mar | 11.4 °C | +1.1 °C | 37 mm | -27 mm |
| Apr | 14.6 °C | +2.6 °C | 79 mm | +27 mm |
| May | 16.6 °C | +2.1 °C | 48 mm | -6 mm |
| Jun | 19.4 °C | +2.3 °C | 32 mm | -8 mm |
| Jul | 20.0 °C | +1.3 °C | 37 mm | +1 mm |
| Aug | 20.5 °C | +1.6 °C | 30 mm | -13 mm |
| Sep | 17.6 °C | -0.1 °C | 49 mm | -6 mm |
| Oct | 16.4 °C | +1.1 °C | 78 mm | -5 mm |
| Nov | 13.9 °C | +1.6 °C | 102 mm | +6 mm |
| Dec | 11.1 °C | +0.8 °C | 133 mm | +31 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 Trégunc?
Trégunc has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 12.4 °C and it receives 790 mm of precipitation per year.
What is the hottest day ever recorded in Trégunc?
The hottest day measured in Trégunc between 1940 and 2025 was 18 July 2022, reaching 27.9 °C.
What is the coldest day in Trégunc?
The coldest day measured in Trégunc between 1940 and 2025 was 13 January 1987, at -6.2 °C.
Does it snow in Trégunc?
Yes. Trégunc gets on average 1.6 cm of snow per year and has around 2 frost days.
Has the climate of Trégunc warmed?
Yes: Trégunc warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Trégunc?
The wettest day measured in Trégunc between 1940 and 2025 was 21 August 1944, with 58 mm of rain in 24 hours.
What was the windiest day in Trégunc?
The windiest day measured in Trégunc between 1940 and 2025 was 16 October 1987, with winds reaching 90.0 km/h.
What is the warmest month in Trégunc?
The warmest month in Trégunc is August (17.5 °C on average); the coldest is February (7.7 °C).
How much does it rain in Trégunc?
Trégunc receives on average 790 mm of precipitation per year, spread over about 132 rainy days.
Is it sunny in Trégunc?
Trégunc gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.
What is the biggest single-day snowfall in Trégunc?
The heaviest 24-hour snowfall measured in Trégunc between 1940 and 2025 was 18 February 1986, with 6.9 cm.
Are there tropical nights in Trégunc?
Yes: Trégunc has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Trégunc?
In Trégunc, between 1940 and 2025, the highest apparent temperature reached 31.3 °C on 9 August 2003, and the lowest was -15.7 °C on 13 January 1987.
Compare Trégunc with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Trégunc