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Monthly climate in Laon, France

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Laon features a oceanic climate (Cfb). Temperatures typically range between 4 °C (39 °F) and 20 °C (69 °F) through the year, but rarely can drop to -9 °C (16 °F) or can rise to as high as 43 °C (110 °F). The average annual precipitation amounts to about 830 mm (32.7 inches) and receives 137 rainy days on the 1 mm (0.04 inches) threshold annually. Laon enjoys an average of 3408 hours of sunshine throughout the year, and daylight varies from 8 hours 12 minutes to 16 hours 12 minutes per day.

Monthly average temperatures in Laon, France

The warmest months in Laon are June, July and August, with daily mean temperatures ranging from 19 to 20 °C (66 - 69 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 4 to 6 °C (39 - 42 °F) throughout the day. On average each year, Laon experiences 43 days above 25 °C (77.0 °F) and 32 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Laon. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum14°C
(58°F)		19°C
(67°F)		24°C
(75°F)		27°C
(81°F)		31°C
(89°F)		35°C
(95°F)		43°C
(110°F)		38°C
(101°F)		35°C
(95°F)		26°C
(79°F)		20°C
(67°F)		15°C
(60°F)
Mean maximum12°C
(54°F)		16°C
(61°F)		20°C
(68°F)		24°C
(76°F)		27°C
(82°F)		30°C
(86°F)		34°C
(94°F)		34°C
(94°F)		30°C
(86°F)		23°C
(74°F)		17°C
(63°F)		14°C
(58°F)
Average high6°C
(44°F)		9°C
(48°F)		12°C
(54°F)		16°C
(61°F)		19°C
(67°F)		24°C
(75°F)		25°C
(78°F)		25°C
(77°F)		22°C
(71°F)		16°C
(61°F)		10°C
(51°F)		8°C
(46°F)
Daily mean4°C
(39°F)		6°C
(42°F)		8°C
(46°F)		11°C
(51°F)		14°C
(58°F)		19°C
(66°F)		20°C
(69°F)		20°C
(68°F)		16°C
(62°F)		12°C
(54°F)		7°C
(45°F)		6°C
(42°F)
Average low2°C
(35°F)		3°C
(37°F)		4°C
(39°F)		5°C
(42°F)		9°C
(48°F)		14°C
(57°F)		15°C
(59°F)		15°C
(59°F)		12°C
(53°F)		9°C
(49°F)		4°C
(40°F)		3°C
(38°F)
Mean minimum-4°C
(25°F)		-4°C
(25°F)		-2°C
(28°F)		-1°C
(30°F)		2°C
(37°F)		8°C
(47°F)		11°C
(51°F)		9°C
(49°F)		6°C
(44°F)		3°C
(37°F)		-2°C
(28°F)		-3°C
(27°F)
Minimum-7°C
(20°F)		-7°C
(19°F)		-9°C
(16°F)		-3°C
(28°F)		-0°C
(32°F)		6°C
(43°F)		9°C
(48°F)		7°C
(44°F)		4°C
(40°F)		1°C
(34°F)		-3°C
(28°F)		-4°C
(26°F)

Compare climate in Laon with other places

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

Monthly average precipitation in Laon, France

Laon usually has the most precipitation in February, October and December, with an average of 14 rainy days and 91 mm (3.6 inches) of precipitation per month. The driest months in Laon are April, July and September. On average, 50 mm (2.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Laon. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)71 (2.8)75 (3.0)74 (2.9)39 (1.5)61 (2.4)62 (2.5)58 (2.3)70 (2.8)54 (2.1)85 (3.3)68 (2.7)112 (4.4)
Average precipitation days (≥ 1 mm)12131481198129121217

Monthly sunshine hours in Laon, France

The sunniest months in Laon are May, June and July, when the sun shines an average of 13 hours 2 minutes a day. Least sunny months in Laon: January, February and December receive an average of 4 hours 54 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Laon. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours113190259345386401412383320258195142
Mean daily daylight hours8h 40m10h 7m11h 55m13h 46m15h 22m16h 12m15h 45m14h 19m12h 32m10h 42m9h 4m8h 12m

Solar UV radiation in Laon, France

Laon experiences the highest level of ultraviolet (UV) radiation in May, June 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 Laon UV Index data.

Average daily maximum UV levels by month for Laon. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)234689886421