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Monthly climate in Merzig, Germany

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Merzig features a oceanic climate (Cfb). Temperatures typically range between 2 °C (35 °F) and 19 °C (67 °F) through the year, but rarely can drop to -11 °C (12 °F) or can rise to as high as 38 °C (100 °F). The average annual precipitation amounts to about 1013 mm (39.9 inches) and receives 151 rainy days on the 1 mm (0.04 inches) threshold annually. Merzig enjoys an average of 3341 hours of sunshine throughout the year, and daylight varies from 8 hours 11 minutes to 16 hours 12 minutes per day.

Monthly average temperatures in Merzig, Germany

The warmest months in Merzig are June, July and August, with daily mean temperatures ranging from 18 to 19 °C (65 - 67 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 2 to 4 °C (35 - 39 °F) throughout the day. On average each year, Merzig experiences 33 days above 25 °C (77.0 °F) and 51 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Merzig. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum12°C
(54°F)		19°C
(66°F)		22°C
(73°F)		26°C
(80°F)		31°C
(89°F)		34°C
(93°F)		38°C
(100°F)		35°C
(95°F)		31°C
(89°F)		25°C
(76°F)		19°C
(67°F)		14°C
(57°F)
Mean maximum10°C
(51°F)		14°C
(57°F)		18°C
(65°F)		23°C
(74°F)		26°C
(80°F)		29°C
(84°F)		31°C
(89°F)		31°C
(88°F)		28°C
(82°F)		21°C
(71°F)		16°C
(61°F)		13°C
(55°F)
Average high4°C
(39°F)		7°C
(45°F)		10°C
(51°F)		15°C
(58°F)		18°C
(64°F)		23°C
(74°F)		24°C
(75°F)		24°C
(75°F)		20°C
(68°F)		14°C
(58°F)		8°C
(47°F)		5°C
(42°F)
Daily mean2°C
(35°F)		4°C
(39°F)		6°C
(43°F)		10°C
(50°F)		13°C
(56°F)		18°C
(65°F)		19°C
(67°F)		19°C
(66°F)		15°C
(59°F)		11°C
(51°F)		5°C
(42°F)		4°C
(39°F)
Average low-0°C
(32°F)		1°C
(34°F)		2°C
(36°F)		4°C
(40°F)		8°C
(47°F)		13°C
(56°F)		14°C
(58°F)		14°C
(58°F)		10°C
(51°F)		7°C
(46°F)		3°C
(38°F)		2°C
(36°F)
Mean minimum-6°C
(22°F)		-6°C
(22°F)		-3°C
(26°F)		-2°C
(29°F)		2°C
(35°F)		8°C
(46°F)		9°C
(49°F)		8°C
(47°F)		5°C
(41°F)		2°C
(35°F)		-2°C
(28°F)		-4°C
(24°F)
Minimum-11°C
(12°F)		-10°C
(13°F)		-11°C
(13°F)		-3°C
(26°F)		0°C
(33°F)		6°C
(43°F)		8°C
(47°F)		6°C
(44°F)		3°C
(39°F)		1°C
(34°F)		-3°C
(26°F)		-6°C
(22°F)

Compare climate in Merzig with other places

Compare temperature, precipitation, sunshine, UV index in Merzig, Germany with other places around the world.

Monthly average precipitation in Merzig, Germany

Merzig usually has the most precipitation in February, March and December, with an average of 15 rainy days and 116 mm (4.6 inches) of precipitation per month. The driest months in Merzig are April, August and September. On average, 60 mm (2.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Merzig. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)87 (3.4)91 (3.6)103 (4.0)46 (1.8)86 (3.4)80 (3.1)71 (2.8)63 (2.5)70 (2.8)82 (3.2)79 (3.1)154 (6.1)
Average precipitation days (≥ 1 mm)13121591212111310121220

Monthly sunshine hours in Merzig, Germany

The sunniest months in Merzig are May, June and July, when the sun shines an average of 13 hours 7 minutes a day. Least sunny months in Merzig: January, November and December receive an average of 4 hours 16 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Merzig. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours107195258348387406413384314237171115
Mean daily daylight hours8h 39m10h 6m11h 55m13h 46m15h 23m16h 12m15h 46m14h 20m12h 32m10h 42m9h 4m8h 11m

Solar UV radiation in Merzig, Germany

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

Average daily maximum UV levels by month for Merzig. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)234689876421