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Monthly climate in Marthon, France

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Marthon features a oceanic climate (Cfb). Temperatures typically range between 5 °C (41 °F) and 21 °C (71 °F) through the year, but rarely can drop to -7 °C (20 °F) or can rise to as high as 40 °C (103 °F). The average annual precipitation amounts to about 983 mm (38.7 inches) and receives 142 rainy days on the 1 mm (0.04 inches) threshold annually. Marthon enjoys an average of 3594 hours of sunshine throughout the year, and daylight varies from 8 hours 45 minutes to 15 hours 36 minutes per day.

Monthly average temperatures in Marthon, France

The warmest months in Marthon are June, July and August, with daily mean temperatures ranging from 19 to 21 °C (67 - 71 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 5 to 7 °C (41 - 46 °F) throughout the day. On average each year, Marthon experiences 60 days above 25 °C (77.0 °F) and 23 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Marthon. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum17°C
(62°F)		24°C
(76°F)		24°C
(76°F)		27°C
(81°F)		31°C
(87°F)		37°C
(100°F)		40°C
(103°F)		38°C
(101°F)		34°C
(93°F)		27°C
(81°F)		21°C
(69°F)		16°C
(60°F)
Mean maximum14°C
(57°F)		18°C
(65°F)		22°C
(71°F)		25°C
(78°F)		28°C
(83°F)		32°C
(89°F)		35°C
(96°F)		35°C
(95°F)		31°C
(88°F)		25°C
(78°F)		19°C
(67°F)		15°C
(59°F)
Average high8°C
(47°F)		12°C
(53°F)		14°C
(58°F)		18°C
(64°F)		20°C
(69°F)		24°C
(76°F)		27°C
(80°F)		26°C
(80°F)		24°C
(75°F)		18°C
(65°F)		13°C
(55°F)		10°C
(50°F)
Daily mean5°C
(41°F)		7°C
(46°F)		9°C
(49°F)		12°C
(54°F)		15°C
(60°F)		19°C
(67°F)		21°C
(71°F)		21°C
(70°F)		18°C
(65°F)		14°C
(57°F)		9°C
(48°F)		7°C
(45°F)
Average low2°C
(36°F)		4°C
(39°F)		5°C
(42°F)		7°C
(45°F)		10°C
(51°F)		14°C
(58°F)		16°C
(61°F)		15°C
(60°F)		13°C
(55°F)		10°C
(50°F)		5°C
(42°F)		4°C
(39°F)
Mean minimum-4°C
(26°F)		-3°C
(27°F)		-1°C
(30°F)		-0°C
(32°F)		4°C
(39°F)		9°C
(49°F)		11°C
(52°F)		10°C
(50°F)		6°C
(43°F)		4°C
(39°F)		-2°C
(29°F)		-3°C
(27°F)
Minimum-7°C
(20°F)		-7°C
(20°F)		-7°C
(21°F)		-3°C
(28°F)		1°C
(34°F)		7°C
(44°F)		9°C
(49°F)		8°C
(47°F)		5°C
(41°F)		2°C
(36°F)		-3°C
(27°F)		-5°C
(23°F)

Compare climate in Marthon with other places

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

Monthly average precipitation in Marthon, France

Marthon usually has the most precipitation in March, May and December, with an average of 15 rainy days and 112 mm (4.4 inches) of precipitation per month. The driest months in Marthon are July, August and September. On average, 55 mm (2.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Marthon. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)75 (2.9)82 (3.2)92 (3.6)65 (2.5)106 (4.2)91 (3.6)58 (2.3)49 (1.9)58 (2.3)88 (3.5)81 (3.2)139 (5.5)
Average precipitation days (≥ 1 mm)1012141015128910121317

Monthly sunshine hours in Marthon, France

The sunniest months in Marthon are June, July and August, when the sun shines an average of 13 hours 7 minutes a day. Least sunny months in Marthon: January, February and December receive an average of 6 hours 6 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Marthon. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours153215277342380399415392334272224186
Mean daily daylight hours9h 9m10h 23m11h 56m13h 32m14h 54m15h 36m15h 13m14h 0m12h 28m10h 53m9h 29m8h 45m

Solar UV radiation in Marthon, France

Marthon 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, February 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 Marthon UV Index data.

Average daily maximum UV levels by month for Marthon. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)2357810996532