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Monthly climate in Heilbronn, Baden-Württemberg, Germany

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Heilbronn features a oceanic climate (Cfb).Temperatures typically range between 2 °C (35 °F) and 20 °C (68 °F) through the year, but rarely can drop to -13 °C (8 °F) or can rise to as high as 36 °C (97 °F).The average annual precipitation amounts to about 891 mm (35.1 inches) and receives 146 rainy days on the 1 mm (0.04 inches) threshold annually.Heilbronn enjoys an average of 3450 hours of sunshine throughout the year, and daylight varies from 8 hours 14 minutes to 16 hours 9 minutes per day.

Monthly average temperatures in Heilbronn, Baden-Württemberg, Germany §

The warmest months in Heilbronn are June, July and August, with daily mean temperatures ranging from 19 to 20 °C (66 - 68 °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, Heilbronn experiences 42 days above 25 °C (77.0 °F) and 55 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Heilbronn, Baden-Württemberg, Germany.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 13°C
(55°F)		 19°C
(66°F)		 22°C
(72°F)		 27°C
(80°F)		 30°C
(87°F)		 34°C
(94°F)		 36°C
(97°F)		 35°C
(95°F)		 31°C
(88°F)		 25°C
(77°F)		 21°C
(71°F)		 14°C
(57°F)
Mean maximum 11°C
(52°F)		 15°C
(59°F)		 19°C
(66°F)		 24°C
(75°F)		 27°C
(81°F)		 29°C
(85°F)		 32°C
(89°F)		 32°C
(90°F)		 28°C
(82°F)		 23°C
(73°F)		 17°C
(63°F)		 12°C
(54°F)
Average high 4°C
(39°F)		 7°C
(45°F)		 11°C
(51°F)		 15°C
(60°F)		 18°C
(65°F)		 24°C
(75°F)		 25°C
(77°F)		 25°C
(77°F)		 20°C
(69°F)		 15°C
(60°F)		 8°C
(47°F)		 5°C
(42°F)
Daily mean 2°C
(35°F)		 4°C
(39°F)		 6°C
(43°F)		 10°C
(50°F)		 14°C
(57°F)		 19°C
(66°F)		 20°C
(68°F)		 20°C
(68°F)		 15°C
(60°F)		 11°C
(52°F)		 5°C
(42°F)		 3°C
(38°F)
Average low -1°C
(31°F)		 1°C
(33°F)		 2°C
(36°F)		 5°C
(41°F)		 9°C
(48°F)		 14°C
(57°F)		 14°C
(58°F)		 15°C
(59°F)		 11°C
(52°F)		 7°C
(46°F)		 3°C
(38°F)		 1°C
(35°F)
Mean minimum -6°C
(21°F)		 -6°C
(21°F)		 -4°C
(25°F)		 -2°C
(29°F)		 1°C
(35°F)		 7°C
(46°F)		 10°C
(50°F)		 9°C
(48°F)		 4°C
(40°F)		 2°C
(35°F)		 -2°C
(29°F)		 -5°C
(24°F)
Minimum -13°C
(8°F)		 -12°C
(12°F)		 -11°C
(13°F)		 -4°C
(26°F)		 -1°C
(30°F)		 7°C
(44°F)		 7°C
(45°F)		 6°C
(43°F)		 3°C
(38°F)		 -1°C
(31°F)		 -3°C
(27°F)		 -7°C
(20°F)

Compare climate in Heilbronn with other places

Compare temperature, precipitation, sunshine, UV index in Heilbronn, Baden-Württemberg, Germany with other places around the world.

Monthly average precipitation in Heilbronn, Baden-Württemberg, Germany §

Heilbronn usually has the most precipitation in March, June and December, with an average of 15 rainy days and 102 mm (4.0 inches) of precipitation per month.The driest months in Heilbronn are April, September and November. On average, 47 mm (1.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Heilbronn, Baden-Württemberg, Germany.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 80 (3.1) 74 (2.9) 91 (3.6) 37 (1.5) 85 (3.3) 85 (3.4) 67 (2.6) 65 (2.6) 51 (2.0) 75 (3.0) 51 (2.0) 130 (5.1)
Average precipitation days (≥ 1 mm) 12 11 14 9 14 12 12 13 9 12 9 19

Monthly sunshine hours in Heilbronn, Baden-Württemberg, Germany §

The sunniest months in Heilbronn are May, June and July, when the sun shines an average of 12 hours 53 minutes a day.Least sunny months in Heilbronn: January, November and December receive an average of 5 hours 1 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Heilbronn, Baden-Württemberg, Germany.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 125 208 280 345 383 389 412 382 320 263 193 143
Mean daily daylight hours 8h 42m 10h 8m 11h 55m 13h 45m 15h 20m 16h 9m 15h 43m 14h 18m 12h 32m 10h 43m 9h 6m 8h 14m

Solar UV radiation in Heilbronn, Baden-Württemberg, Germany §

Heilbronn 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 Heilbronn UV Index data.

Average daily maximum UV levels by month for Heilbronn, Baden-Württemberg, Germany.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 2 3 5 6 8 8 8 7 6 4 2 1