Tarnos climate — normals and trends
Tarnos (France) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 14.2 °C and it receives 1,237 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 (20.4 °C on average) and the coldest is January (8.5 °C). Rainfall peaks in November.
Tarnos averages 4 frost days, 4 hot days (≥ 30 °C) and 158 rainy days per year.
Tarnos has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The number of frost days there went from about 7 to 1 per year over the period.
The hottest day of the period reached 39.4 °C (on 18 June 2022) and the coldest -9.4 °C (on 16 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
TarnosNew Aquitaine
- coords
- 43.54°, -1.46°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
14.2°C
Average daily high
17.0°C
Average daily low
11.6°C
Annual rainfall
1,237mm
Sunshine / day
9.4h
Mean relative humidity
79%
Average peak wind
18.9km/h
Seasonal range
11.9°C
Frost days (< 0 °C)
4 d/yr
Hot days (≥ 30 °C)
4 d/yr
Rainy days (≥ 1 mm)
158 d/yr
Annual snowfall
1.9 cm
Average feels-like high
16.2 °C
Average feels-like low
9.9 °C
Average peak gust
36.3 km/h
Tropical nights (≥ 20 °C)
8 d/yr
Solar radiation
13.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.55 · 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
39.4 °C
18 June 2022
Coldest day
-9.4 °C
16 January 1985
Wettest day
83 mm
14 September 1969
Windiest day
71.1 km/h
2 December 1976
Strongest gust
149.4 km/h
24 January 2009
Hottest feels-like
42.3 °C
18 June 2022
Coldest feels-like
-14.0 °C
16 January 1985
Snowiest day
5.7 cm
13 January 1987
Sunniest day
14.8 h
24 June 2018
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 | 13.4 °C | +2.4 °C | 146 mm | +20 mm |
| Feb | 14.9 °C | +3.1 °C | 61 mm | -46 mm |
| Mar | 14.5 °C | +0.6 °C | 91 mm | -8 mm |
| Apr | 18.0 °C | +2.7 °C | 108 mm | +4 mm |
| May | 19.1 °C | +1.0 °C | 77 mm | -20 mm |
| Jun | 24.0 °C | +3.2 °C | 69 mm | -5 mm |
| Jul | 23.5 °C | +0.8 °C | 63 mm | +2 mm |
| Aug | 25.1 °C | +1.8 °C | 82 mm | +7 mm |
| Sep | 22.7 °C | +0.7 °C | 70 mm | -22 mm |
| Oct | 20.6 °C | +1.6 °C | 48 mm | -66 mm |
| Nov | 16.2 °C | +1.9 °C | 173 mm | +26 mm |
| Dec | 13.6 °C | +1.9 °C | 92 mm | -48 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 Tarnos?
Tarnos has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 14.2 °C and it receives 1,237 mm of precipitation per year.
What is the hottest day ever recorded in Tarnos?
The hottest day measured in Tarnos between 1940 and 2025 was 18 June 2022, reaching 39.4 °C.
What is the coldest day in Tarnos?
The coldest day measured in Tarnos between 1940 and 2025 was 16 January 1985, at -9.4 °C.
Does it snow in Tarnos?
Yes. Tarnos gets on average 1.9 cm of snow per year and has around 4 frost days.
Has the climate of Tarnos warmed?
Yes: Tarnos warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Tarnos?
The wettest day measured in Tarnos between 1940 and 2025 was 14 September 1969, with 83 mm of rain in 24 hours.
What was the windiest day in Tarnos?
The windiest day measured in Tarnos between 1940 and 2025 was 2 December 1976, with winds reaching 71.1 km/h.
What is the warmest month in Tarnos?
The warmest month in Tarnos is August (20.4 °C on average); the coldest is January (8.5 °C).
How much does it rain in Tarnos?
Tarnos receives on average 1,237 mm of precipitation per year, spread over about 158 rainy days.
Is it sunny in Tarnos?
Tarnos gets on average 9.4 hours of sunshine per day, roughly 3,431 hours per year over 1940-2025.
What is the biggest single-day snowfall in Tarnos?
The heaviest 24-hour snowfall measured in Tarnos between 1940 and 2025 was 13 January 1987, with 5.7 cm.
Are there tropical nights in Tarnos?
Yes: Tarnos has on average 8 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Tarnos?
In Tarnos, between 1940 and 2025, the highest apparent temperature reached 42.3 °C on 18 June 2022, and the lowest was -14.0 °C on 16 January 1985.
Compare Tarnos with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Tarnos