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Monthly climate in Olm, Luxembourg

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Olm features a oceanic climate (Cfb). Temperatures typically range between 2 °C (36 °F) and 18 °C (65 °F) through the year, but rarely can drop to -12 °C (11 °F) or can rise to as high as 37 °C (100 °F). The average annual precipitation amounts to about 895 mm (35.3 inches) and receives 147 rainy days on the 1 mm (0.04 inches) threshold annually. Olm enjoys an average of 3305 hours of sunshine throughout the year, and daylight varies from 8 hours 11 minutes to 16 hours 13 minutes per day.

Monthly average temperatures in Olm, Luxembourg

The warmest months in Olm are June, July and August, with daily mean temperatures ranging from 17 to 18 °C (64 - 65 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 2 to 4 °C (36 - 39 °F) throughout the day. On average each year, Olm experiences 26 days above 25 °C (77.0 °F) and 50 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Olm. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum12°C
(53°F)		18°C
(66°F)		21°C
(71°F)		26°C
(79°F)		30°C
(86°F)		33°C
(92°F)		37°C
(100°F)		34°C
(94°F)		32°C
(90°F)		24°C
(76°F)		19°C
(66°F)		14°C
(57°F)
Mean maximum10°C
(50°F)		14°C
(57°F)		18°C
(64°F)		22°C
(73°F)		26°C
(79°F)		28°C
(82°F)		31°C
(88°F)		30°C
(87°F)		27°C
(82°F)		21°C
(70°F)		15°C
(60°F)		12°C
(55°F)
Average high4°C
(39°F)		6°C
(44°F)		10°C
(50°F)		14°C
(57°F)		17°C
(63°F)		22°C
(72°F)		23°C
(74°F)		23°C
(73°F)		19°C
(67°F)		14°C
(57°F)		8°C
(47°F)		5°C
(42°F)
Daily mean2°C
(36°F)		3°C
(38°F)		6°C
(43°F)		9°C
(49°F)		13°C
(55°F)		17°C
(64°F)		18°C
(65°F)		18°C
(65°F)		14°C
(58°F)		10°C
(51°F)		5°C
(42°F)		4°C
(39°F)
Average low-0°C
(32°F)		1°C
(33°F)		2°C
(36°F)		4°C
(40°F)		8°C
(46°F)		13°C
(55°F)		14°C
(57°F)		14°C
(57°F)		10°C
(50°F)		7°C
(46°F)		3°C
(38°F)		2°C
(36°F)
Mean minimum-6°C
(22°F)		-6°C
(22°F)		-4°C
(25°F)		-2°C
(29°F)		1°C
(35°F)		7°C
(45°F)		8°C
(47°F)		8°C
(47°F)		5°C
(41°F)		2°C
(35°F)		-2°C
(29°F)		-4°C
(25°F)
Minimum-11°C
(12°F)		-11°C
(13°F)		-12°C
(11°F)		-3°C
(27°F)		-1°C
(31°F)		6°C
(43°F)		7°C
(45°F)		6°C
(43°F)		3°C
(38°F)		0°C
(33°F)		-4°C
(25°F)		-5°C
(23°F)

Compare climate in Olm with other places

Compare temperature, precipitation, sunshine, UV index in Olm, Luxembourg with other places around the world.

Monthly average precipitation in Olm, Luxembourg

Olm usually has the most precipitation in March, October and December, with an average of 15 rainy days and 95 mm (3.7 inches) of precipitation per month. The driest months in Olm are April, August and September. On average, 57 mm (2.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Olm. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)72 (2.8)75 (3.0)83 (3.2)41 (1.6)74 (2.9)77 (3.0)73 (2.9)66 (2.6)64 (2.5)80 (3.2)69 (2.7)122 (4.8)
Average precipitation days (≥ 1 mm)11121510131291310111219

Monthly sunshine hours in Olm, Luxembourg

The sunniest months in Olm are June, July and August, when the sun shines an average of 13 hours 3 minutes a day. Least sunny months in Olm: January, November and December receive an average of 4 hours 13 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Olm. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours105187247346384409407384315233173109
Mean daily daylight hours8h 39m10h 6m11h 55m13h 46m15h 23m16h 13m15h 46m14h 20m12h 33m10h 42m9h 3m8h 11m

Solar UV radiation in Olm, Luxembourg

Olm 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 Olm UV Index data.

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