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Monthly climate in Riantec, Brittany, France

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Riantec features a oceanic climate (Cfb).Temperatures typically range between 8 °C (46 °F) and 18 °C (66 °F) through the year, but rarely can drop to -4 °C (25 °F) or can rise to as high as 27 °C (81 °F).The average annual precipitation amounts to about 889 mm (35.0 inches) and receives 139 rainy days on the 1 mm (0.04 inches) threshold annually.Riantec enjoys an average of 3694 hours of sunshine throughout the year, and daylight varies from 8 hours 28 minutes to 15 hours 55 minutes per day.

Monthly average temperatures in Riantec, Brittany, France §

The warmest months in Riantec are June, July and August, with daily mean temperatures ranging from 17 to 18 °C (62 - 66 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 8 to 9 °C (46 - 49 °F) throughout the day. On average each year, Riantec experiences 5 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 Riantec, 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
(58°F)		 17°C
(63°F)		 20°C
(68°F)		 24°C
(75°F)		 27°C
(80°F)		 27°C
(81°F)		 27°C
(81°F)		 27°C
(81°F)		 19°C
(67°F)		 17°C
(62°F)		 14°C
(57°F)
Mean maximum 13°C
(55°F)		 13°C
(56°F)		 15°C
(59°F)		 19°C
(66°F)		 21°C
(70°F)		 24°C
(75°F)		 26°C
(80°F)		 25°C
(78°F)		 24°C
(75°F)		 18°C
(65°F)		 16°C
(61°F)		 14°C
(57°F)
Average high 9°C
(49°F)		 10°C
(50°F)		 11°C
(53°F)		 14°C
(57°F)		 16°C
(61°F)		 19°C
(66°F)		 21°C
(70°F)		 20°C
(69°F)		 19°C
(67°F)		 16°C
(61°F)		 12°C
(55°F)		 11°C
(52°F)
Daily mean 8°C
(46°F)		 8°C
(47°F)		 9°C
(49°F)		 11°C
(52°F)		 14°C
(57°F)		 17°C
(62°F)		 18°C
(66°F)		 18°C
(65°F)		 17°C
(62°F)		 14°C
(57°F)		 11°C
(51°F)		 9°C
(49°F)
Average low 6°C
(43°F)		 6°C
(44°F)		 7°C
(45°F)		 8°C
(47°F)		 11°C
(52°F)		 14°C
(58°F)		 16°C
(61°F)		 16°C
(60°F)		 14°C
(58°F)		 12°C
(54°F)		 9°C
(48°F)		 8°C
(46°F)
Mean minimum 1°C
(34°F)		 1°C
(34°F)		 2°C
(36°F)		 4°C
(39°F)		 7°C
(44°F)		 11°C
(52°F)		 13°C
(56°F)		 12°C
(54°F)		 10°C
(51°F)		 8°C
(46°F)		 4°C
(40°F)		 3°C
(37°F)
Minimum -3°C
(28°F)		 -3°C
(26°F)		 -4°C
(25°F)		 2°C
(36°F)		 4°C
(40°F)		 10°C
(50°F)		 11°C
(52°F)		 12°C
(53°F)		 9°C
(48°F)		 5°C
(41°F)		 2°C
(36°F)		 2°C
(36°F)

Compare climate in Riantec with other places

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

Monthly average precipitation in Riantec, Brittany, France §

Riantec usually has the most precipitation in October, November and December, with an average of 14 rainy days and 113 mm (4.5 inches) of precipitation per month.The driest months in Riantec are April, July and September. On average, 47 mm (1.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Riantec, 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) 66 (2.6) 90 (3.5) 72 (2.8) 46 (1.8) 62 (2.4) 67 (2.6) 49 (1.9) 52 (2.0) 47 (1.8) 107 (4.2) 100 (3.9) 133 (5.2)
Average precipitation days (≥ 1 mm) 11 14 15 7 11 11 9 10 9 13 12 17

Monthly sunshine hours in Riantec, Brittany, France §

The sunniest months in Riantec are May, June and July, when the sun shines an average of 13 hours 37 minutes a day.Least sunny months in Riantec: 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 Riantec, 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 53m 10h 14m 11h 56m 13h 39m 15h 9m 15h 55m 15h 30m 14h 11m 12h 31m 10h 47m 9h 16m 8h 28m

Solar UV radiation in Riantec, Brittany, France §

Riantec 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 Riantec UV Index data.

Average daily maximum UV levels by month for Riantec, 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