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Monthly climate in Treffieux, France

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Treffieux features a oceanic climate (Cfb). Temperatures typically range between 6 °C (43 °F) and 20 °C (68 °F) through the year, but rarely can drop to -8 °C (19 °F) or can rise to as high as 38 °C (101 °F). The average annual precipitation amounts to about 771 mm (30.3 inches) and receives 124 rainy days on the 1 mm (0.04 inches) threshold annually. Treffieux enjoys an average of 3510 hours of sunshine throughout the year, and daylight varies from 8 hours 28 minutes to 15 hours 54 minutes per day.

Monthly average temperatures in Treffieux, France

The warmest months in Treffieux are June, July and August, with daily mean temperatures ranging from 18 to 20 °C (65 - 68 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 6 to 8 °C (43 - 46 °F) throughout the day. On average each year, Treffieux experiences 39 days above 25 °C (77.0 °F) and 19 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Treffieux. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum16°C
(61°F)		21°C
(71°F)		24°C
(76°F)		27°C
(80°F)		31°C
(88°F)		36°C
(97°F)		38°C
(101°F)		37°C
(99°F)		34°C
(93°F)		25°C
(78°F)		18°C
(65°F)		16°C
(62°F)
Mean maximum14°C
(57°F)		16°C
(61°F)		20°C
(69°F)		24°C
(76°F)		27°C
(81°F)		31°C
(87°F)		33°C
(92°F)		33°C
(92°F)		29°C
(85°F)		22°C
(73°F)		17°C
(63°F)		15°C
(59°F)
Average high9°C
(48°F)		11°C
(52°F)		13°C
(56°F)		17°C
(62°F)		20°C
(67°F)		23°C
(73°F)		25°C
(77°F)		24°C
(76°F)		22°C
(72°F)		17°C
(64°F)		12°C
(54°F)		10°C
(50°F)
Daily mean6°C
(43°F)		7°C
(45°F)		9°C
(49°F)		12°C
(53°F)		15°C
(59°F)		18°C
(65°F)		20°C
(68°F)		19°C
(67°F)		17°C
(63°F)		13°C
(56°F)		9°C
(48°F)		8°C
(46°F)
Average low3°C
(38°F)		4°C
(39°F)		5°C
(42°F)		7°C
(44°F)		10°C
(50°F)		13°C
(56°F)		15°C
(59°F)		14°C
(58°F)		12°C
(54°F)		10°C
(50°F)		5°C
(42°F)		5°C
(41°F)
Mean minimum-3°C
(27°F)		-2°C
(28°F)		-2°C
(30°F)		-0°C
(32°F)		4°C
(39°F)		8°C
(46°F)		11°C
(52°F)		9°C
(49°F)		6°C
(44°F)		4°C
(39°F)		-1°C
(30°F)		-2°C
(28°F)
Minimum-7°C
(20°F)		-6°C
(21°F)		-8°C
(19°F)		-3°C
(27°F)		1°C
(34°F)		6°C
(43°F)		8°C
(47°F)		8°C
(47°F)		5°C
(41°F)		2°C
(36°F)		-3°C
(26°F)		-3°C
(27°F)

Compare climate in Treffieux with other places

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

Monthly average precipitation in Treffieux, France

Treffieux usually has the most precipitation in June, October and December, with an average of 12 rainy days and 90 mm (3.6 inches) of precipitation per month. The driest months in Treffieux are July, August and September. On average, 44 mm (1.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Treffieux. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)48 (1.9)63 (2.5)66 (2.6)51 (2.0)61 (2.4)89 (3.5)43 (1.7)43 (1.7)47 (1.9)82 (3.2)76 (3.0)100 (3.9)
Average precipitation days (≥ 1 mm)9121281211788121114

Monthly sunshine hours in Treffieux, France

The sunniest months in Treffieux are May, June and July, when the sun shines an average of 12 hours 51 minutes a day. Least sunny months in Treffieux: January, February and December receive an average of 5 hours 40 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Treffieux. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours133198279345388385410384322262214184
Mean daily daylight hours8h 54m10h 15m11h 56m13h 39m15h 8m15h 54m15h 29m14h 10m12h 30m10h 48m9h 16m8h 28m

Solar UV radiation in Treffieux, France

Treffieux 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 Treffieux UV Index data.

Average daily maximum UV levels by month for Treffieux. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)235689986422