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Monthly climate in Guillestre, France

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Guillestre features a subarctic climate (Dfc). Temperatures typically range between -8 °C (17 °F) and 13 °C (56 °F) through the year, but rarely can drop to -24 °C (-12 °F) or can rise to as high as 25 °C (76 °F). The average annual precipitation amounts to about 1007 mm (39.6 inches) and receives 128 rainy days on the 1 mm (0.04 inches) threshold annually. Guillestre enjoys an average of 3841 hours of sunshine throughout the year, and daylight varies from 8 hours 49 minutes to 15 hours 31 minutes per day.

Monthly average temperatures in Guillestre, France

The warmest months in Guillestre are June, July and August, with daily mean temperatures ranging from 10 to 13 °C (50 - 56 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -8 to -5 °C (17 - 23 °F) throughout the day. On average each year, Guillestre experiences 0 days above 25 °C (77.0 °F) and 202 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Guillestre. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum5°C
(41°F)		9°C
(49°F)		10°C
(50°F)		12°C
(54°F)		19°C
(66°F)		25°C
(76°F)		23°C
(74°F)		24°C
(76°F)		22°C
(72°F)		19°C
(67°F)		13°C
(55°F)		3°C
(38°F)
Mean maximum1°C
(34°F)		6°C
(42°F)		8°C
(46°F)		9°C
(49°F)		15°C
(59°F)		19°C
(67°F)		22°C
(72°F)		23°C
(74°F)		20°C
(68°F)		16°C
(62°F)		8°C
(46°F)		2°C
(36°F)
Average high-4°C
(24°F)		-1°C
(31°F)		1°C
(34°F)		4°C
(40°F)		8°C
(47°F)		15°C
(59°F)		18°C
(66°F)		19°C
(67°F)		15°C
(59°F)		10°C
(50°F)		1°C
(34°F)		-4°C
(26°F)
Daily mean-8°C
(17°F)		-5°C
(23°F)		-3°C
(26°F)		0°C
(32°F)		4°C
(40°F)		10°C
(50°F)		13°C
(55°F)		13°C
(56°F)		9°C
(48°F)		4°C
(40°F)		-3°C
(27°F)		-7°C
(20°F)
Average low-12°C
(11°F)		-9°C
(17°F)		-7°C
(19°F)		-4°C
(25°F)		-1°C
(31°F)		5°C
(41°F)		7°C
(44°F)		7°C
(45°F)		4°C
(39°F)		-0°C
(32°F)		-7°C
(20°F)		-10°C
(14°F)
Mean minimum-20°C
(-4°F)		-15°C
(5°F)		-15°C
(5°F)		-11°C
(13°F)		-6°C
(21°F)		-0°C
(32°F)		2°C
(37°F)		2°C
(36°F)		-3°C
(28°F)		-6°C
(21°F)		-17°C
(2°F)		-19°C
(-3°F)
Minimum-24°C
(-12°F)		-20°C
(-4°F)		-21°C
(-6°F)		-15°C
(6°F)		-9°C
(17°F)		-3°C
(28°F)		1°C
(33°F)		0°C
(33°F)		-6°C
(22°F)		-12°C
(10°F)		-23°C
(-10°F)		-23°C
(-10°F)

Compare climate in Guillestre with other places

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

Monthly average precipitation in Guillestre, France

Guillestre usually has the most precipitation in May, November and December, with an average of 14 rainy days and 122 mm (4.8 inches) of precipitation per month. The driest months in Guillestre are February, August and September. On average, 47 mm (1.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Guillestre. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)65 (2.6)57 (2.3)93 (3.7)85 (3.3)130 (5.1)100 (3.9)61 (2.4)41 (1.6)44 (1.7)95 (3.7)114 (4.5)122 (4.8)
Average precipitation days (≥ 1 mm)8910101616109771313

Monthly sunshine hours in Guillestre, France

The sunniest months in Guillestre are June, July and August, when the sun shines an average of 13 hours 32 minutes a day. Least sunny months in Guillestre: January, November and December receive an average of 7 hours 10 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Guillestre. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours196253325337385405436404338295227235
Mean daily daylight hours9h 12m10h 25m11h 56m13h 30m14h 50m15h 31m15h 9m13h 58m12h 28m10h 55m9h 32m8h 49m

Solar UV radiation in Guillestre, France

Guillestre experiences the highest level of ultraviolet (UV) radiation in May, June and August, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / Extreme 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 Guillestre UV Index data.

Average daily maximum UV levels by month for Guillestre. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)3579101110108632