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Monthly climate in Carnac, Brittany, France

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Carnac features a oceanic climate (Cfb). Temperatures typically range between 8 °C (47 °F) and 19 °C (66 °F) through the year, but rarely can drop to -4 °C (25 °F) or can rise to as high as 28 °C (82 °F). The average annual precipitation amounts to about 800 mm (31.5 inches) and receives 133 rainy days on the 1 mm (0.04 inches) threshold annually. Carnac enjoys an average of 3694 hours of sunshine throughout the year, and daylight varies from 8 hours 29 minutes to 15 hours 53 minutes per day.

Monthly average temperatures in Carnac, Brittany, France §

The warmest months in Carnac are June, July and August, with daily mean temperatures ranging from 17 to 19 °C (63 - 66 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 8 to 10 °C (47 - 50 °F) throughout the day. On average each year, Carnac experiences 6 days above 25 °C (77.0 °F) and 1 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Carnac, Brittany, France. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 14°C
(57°F)		 15°C
(59°F)		 17°C
(63°F)		 20°C
(69°F)		 24°C
(76°F)		 28°C
(82°F)		 28°C
(82°F)		 28°C
(82°F)		 27°C
(81°F)		 20°C
(68°F)		 17°C
(63°F)		 14°C
(58°F)
Mean maximum 13°C
(55°F)		 13°C
(56°F)		 15°C
(60°F)		 19°C
(67°F)		 21°C
(71°F)		 24°C
(76°F)		 27°C
(81°F)		 25°C
(78°F)		 24°C
(75°F)		 19°C
(66°F)		 16°C
(62°F)		 14°C
(57°F)
Average high 10°C
(49°F)		 10°C
(51°F)		 12°C
(53°F)		 14°C
(57°F)		 16°C
(62°F)		 19°C
(67°F)		 21°C
(70°F)		 20°C
(69°F)		 19°C
(67°F)		 16°C
(61°F)		 13°C
(55°F)		 11°C
(52°F)
Daily mean 8°C
(47°F)		 9°C
(48°F)		 10°C
(50°F)		 12°C
(53°F)		 14°C
(58°F)		 17°C
(63°F)		 19°C
(66°F)		 18°C
(65°F)		 17°C
(63°F)		 14°C
(58°F)		 11°C
(52°F)		 10°C
(50°F)
Average low 6°C
(44°F)		 7°C
(45°F)		 8°C
(46°F)		 9°C
(49°F)		 12°C
(53°F)		 15°C
(59°F)		 16°C
(62°F)		 16°C
(61°F)		 15°C
(59°F)		 13°C
(55°F)		 9°C
(49°F)		 8°C
(47°F)
Mean minimum 2°C
(35°F)		 2°C
(35°F)		 3°C
(37°F)		 4°C
(40°F)		 7°C
(45°F)		 12°C
(53°F)		 14°C
(57°F)		 13°C
(56°F)		 11°C
(52°F)		 9°C
(48°F)		 5°C
(41°F)		 3°C
(38°F)
Minimum -2°C
(29°F)		 -3°C
(27°F)		 -4°C
(25°F)		 3°C
(37°F)		 5°C
(42°F)		 10°C
(51°F)		 12°C
(54°F)		 13°C
(55°F)		 10°C
(51°F)		 6°C
(42°F)		 3°C
(37°F)		 2°C
(37°F)

Compare climate in Carnac with other places

Compare temperature, precipitation, sunshine, UV index in Carnac, Brittany, France with other places around the world.

Monthly average precipitation in Carnac, Brittany, France §

Carnac usually has the most precipitation in October, November and December, with an average of 13 rainy days and 100 mm (3.9 inches) of precipitation per month. The driest months in Carnac are April, July and September. On average, 43 mm (1.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Carnac, Brittany, France. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 56 (2.2) 77 (3.0) 65 (2.6) 42 (1.6) 58 (2.3) 65 (2.6) 46 (1.8) 50 (2.0) 41 (1.6) 93 (3.7) 87 (3.4) 121 (4.8)
Average precipitation days (≥ 1 mm) 11 13 13 8 11 11 8 9 9 11 12 17

Monthly sunshine hours in Carnac, Brittany, France §

The sunniest months in Carnac are May, June and July, when the sun shines an average of 13 hours 37 minutes a day. Least sunny months in Carnac: January, February and December receive an average of 5 hours 54 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Carnac, Brittany, France. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 144 205 301 357 412 411 429 400 337 278 229 187
Mean daily daylight hours 8h 54m 10h 15m 11h 56m 13h 39m 15h 8m 15h 53m 15h 29m 14h 10m 12h 30m 10h 48m 9h 17m 8h 29m

Solar UV radiation in Carnac, Brittany, France §

Carnac experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 8 - 9, which corresponds to the Very High category of sun exposure. January, November and December are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 2. For more detailed information, check out our hourly Carnac UV Index data.

Average daily maximum UV levels by month for Carnac, Brittany, France. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 2 3 5 6 8 9 9 8 6 5 2 2

Detailed Monthly Weather Insights for Carnac, Brittany, France

Discover in-depth weather details for every month in Carnac. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Carnac's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.

Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.