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Monthly climate in Castelnau-de-Guers, France

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Castelnau-de-Guers features a warm-summer Mediterranean climate (Csb). Temperatures typically range between 8 °C (46 °F) and 24 °C (75 °F) through the year, but rarely can drop to -5 °C (24 °F) or can rise to as high as 37 °C (99 °F). The average annual precipitation amounts to about 847 mm (33.4 inches) and receives 97 rainy days on the 1 mm (0.04 inches) threshold annually. Castelnau-de-Guers enjoys an average of 3905 hours of sunshine throughout the year, and daylight varies from 8 hours 59 minutes to 15 hours 21 minutes per day.

Monthly average temperatures in Castelnau-de-Guers, France

The warmest months in Castelnau-de-Guers are June, July and August, with daily mean temperatures ranging from 21 to 24 °C (70 - 75 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 8 to 10 °C (46 - 49 °F) throughout the day. On average each year, Castelnau-de-Guers experiences 69 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 Castelnau-de-Guers. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum17°C
(63°F)		21°C
(71°F)		23°C
(73°F)		24°C
(76°F)		28°C
(83°F)		37°C
(99°F)		32°C
(91°F)		35°C
(95°F)		30°C
(86°F)		25°C
(78°F)		19°C
(67°F)		18°C
(64°F)
Mean maximum15°C
(59°F)		18°C
(64°F)		20°C
(67°F)		22°C
(72°F)		26°C
(79°F)		30°C
(86°F)		31°C
(89°F)		33°C
(92°F)		29°C
(84°F)		24°C
(75°F)		18°C
(65°F)		17°C
(62°F)
Average high11°C
(52°F)		13°C
(55°F)		15°C
(58°F)		17°C
(62°F)		21°C
(69°F)		25°C
(77°F)		28°C
(82°F)		28°C
(83°F)		24°C
(76°F)		20°C
(68°F)		15°C
(58°F)		12°C
(54°F)
Daily mean8°C
(46°F)		10°C
(49°F)		11°C
(52°F)		13°C
(56°F)		17°C
(63°F)		21°C
(70°F)		24°C
(75°F)		24°C
(75°F)		20°C
(69°F)		16°C
(61°F)		12°C
(53°F)		9°C
(48°F)
Average low5°C
(41°F)		7°C
(44°F)		8°C
(46°F)		9°C
(49°F)		13°C
(56°F)		17°C
(63°F)		20°C
(68°F)		19°C
(67°F)		16°C
(62°F)		13°C
(56°F)		9°C
(49°F)		6°C
(44°F)
Mean minimum0°C
(33°F)		1°C
(34°F)		2°C
(36°F)		4°C
(40°F)		9°C
(48°F)		14°C
(57°F)		16°C
(61°F)		16°C
(61°F)		12°C
(54°F)		8°C
(46°F)		4°C
(39°F)		2°C
(35°F)
Minimum-2°C
(28°F)		-5°C
(24°F)		-3°C
(27°F)		2°C
(36°F)		6°C
(44°F)		11°C
(52°F)		14°C
(58°F)		15°C
(59°F)		10°C
(50°F)		6°C
(43°F)		2°C
(37°F)		0°C
(32°F)

Compare climate in Castelnau-de-Guers with other places

Compare temperature, precipitation, sunshine, UV index in Castelnau-de-Guers, France with other places around the world.

Monthly average precipitation in Castelnau-de-Guers, France

Castelnau-de-Guers usually has the most precipitation in April, October and November, with an average of 10 rainy days and 116 mm (4.6 inches) of precipitation per month. The driest months in Castelnau-de-Guers are June, July and August. On average, 28 mm (1.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Castelnau-de-Guers. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)80 (3.1)63 (2.5)78 (3.1)82 (3.2)71 (2.8)40 (1.6)18 (0.7)26 (1.0)63 (2.5)137 (5.4)128 (5.1)61 (2.4)
Average precipitation days (≥ 1 mm)898998346101310

Monthly sunshine hours in Castelnau-de-Guers, France

The sunniest months in Castelnau-de-Guers are May, June and July, when the sun shines an average of 13 hours 40 minutes a day. Least sunny months in Castelnau-de-Guers: January, February and December receive an average of 7 hours 26 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Castelnau-de-Guers. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours192251325348403420434401344296252234
Mean daily daylight hours9h 20m10h 29m11h 57m13h 26m14h 43m15h 21m15h 1m13h 53m12h 27m10h 58m9h 39m8h 59m

Solar UV radiation in Castelnau-de-Guers, France

Castelnau-de-Guers experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 9 - 10, which corresponds to the Very High category of sun exposure. January, November and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Castelnau-de-Guers UV Index data.

Average daily maximum UV levels by month for Castelnau-de-Guers. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)24679101097532