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Monthly climate in Bad Mergentheim, Germany

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Bad Mergentheim 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 -14 °C (8 °F) or can rise to as high as 35 °C (96 °F). The average annual precipitation amounts to about 809 mm (31.9 inches) and receives 138 rainy days on the 1 mm (0.04 inches) threshold annually. Bad Mergentheim enjoys an average of 3362 hours of sunshine throughout the year, and daylight varies from 8 hours 13 minutes to 16 hours 10 minutes per day.

Monthly average temperatures in Bad Mergentheim, Germany

The warmest months in Bad Mergentheim are June, July and August, with daily mean temperatures ranging from 19 to 19 °C (66 - 67 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 2 to 3 °C (35 - 38 °F) throughout the day. On average each year, Bad Mergentheim experiences 38 days above 25 °C (77.0 °F) and 57 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Bad Mergentheim. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum13°C
(55°F)		19°C
(66°F)		22°C
(72°F)		26°C
(80°F)		30°C
(87°F)		34°C
(93°F)		35°C
(96°F)		35°C
(95°F)		30°C
(86°F)		25°C
(76°F)		21°C
(70°F)		13°C
(56°F)
Mean maximum11°C
(52°F)		15°C
(58°F)		19°C
(66°F)		24°C
(75°F)		27°C
(80°F)		29°C
(84°F)		31°C
(89°F)		31°C
(89°F)		27°C
(81°F)		22°C
(72°F)		17°C
(62°F)		12°C
(54°F)
Average high4°C
(39°F)		7°C
(44°F)		10°C
(50°F)		15°C
(59°F)		18°C
(64°F)		23°C
(74°F)		24°C
(76°F)		24°C
(76°F)		20°C
(68°F)		15°C
(59°F)		8°C
(46°F)		5°C
(41°F)
Daily mean2°C
(35°F)		3°C
(38°F)		6°C
(42°F)		10°C
(49°F)		13°C
(56°F)		19°C
(66°F)		19°C
(67°F)		19°C
(67°F)		15°C
(59°F)		11°C
(52°F)		5°C
(42°F)		3°C
(38°F)
Average low-0°C
(31°F)		0°C
(33°F)		2°C
(35°F)		4°C
(40°F)		8°C
(47°F)		13°C
(56°F)		14°C
(58°F)		15°C
(59°F)		11°C
(51°F)		7°C
(46°F)		3°C
(38°F)		1°C
(34°F)
Mean minimum-6°C
(21°F)		-6°C
(21°F)		-5°C
(24°F)		-3°C
(28°F)		2°C
(35°F)		7°C
(44°F)		9°C
(49°F)		9°C
(48°F)		4°C
(39°F)		2°C
(35°F)		-2°C
(28°F)		-5°C
(24°F)
Minimum-14°C
(8°F)		-13°C
(9°F)		-11°C
(12°F)		-5°C
(23°F)		-0°C
(32°F)		6°C
(43°F)		7°C
(44°F)		6°C
(43°F)		3°C
(37°F)		-0°C
(32°F)		-4°C
(26°F)		-7°C
(20°F)

Compare climate in Bad Mergentheim with other places

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

Monthly average precipitation in Bad Mergentheim, Germany

Bad Mergentheim usually has the most precipitation in May, June and December, with an average of 13 rainy days and 93 mm (3.7 inches) of precipitation per month. The driest months in Bad Mergentheim are April, September and November. On average, 43 mm (1.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Bad Mergentheim. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)66 (2.6)62 (2.5)75 (3.0)36 (1.4)88 (3.5)86 (3.4)67 (2.6)66 (2.6)49 (1.9)63 (2.5)46 (1.8)105 (4.1)
Average precipitation days (≥ 1 mm)121014913111112812917

Monthly sunshine hours in Bad Mergentheim, Germany

The sunniest months in Bad Mergentheim are June, July and August, when the sun shines an average of 12 hours 46 minutes a day. Least sunny months in Bad Mergentheim: January, November and December receive an average of 4 hours 31 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Bad Mergentheim. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours109203270346378388409378317253178128
Mean daily daylight hours8h 41m10h 7m11h 55m13h 45m15h 21m16h 10m15h 44m14h 19m12h 32m10h 43m9h 5m8h 13m

Solar UV radiation in Bad Mergentheim, Germany

Bad Mergentheim experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 8 - 8, 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 Bad Mergentheim UV Index data.

Average daily maximum UV levels by month for Bad Mergentheim. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)235688876421