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Monthly climate in Bonn, North Rhine-Westphalia, Germany

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Bonn features a oceanic climate (Cfb).Temperatures typically range between 3 °C (38 °F) and 20 °C (67 °F) through the year, but rarely can drop to -10 °C (14 °F) or can rise to as high as 40 °C (105 °F).The average annual precipitation amounts to about 840 mm (33.1 inches) and receives 155 rainy days on the 1 mm (0.04 inches) threshold annually.Bonn enjoys an average of 3338 hours of sunshine throughout the year, and daylight varies from 8 hours 1 minutes to 16 hours 24 minutes per day.

Monthly average temperatures in Bonn, North Rhine-Westphalia, Germany §

The warmest months in Bonn are June, July and August, with daily mean temperatures ranging from 19 to 20 °C (66 - 67 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 3 to 5 °C (38 - 41 °F) throughout the day. On average each year, Bonn experiences 37 days above 25 °C (77.0 °F) and 30 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Bonn, North Rhine-Westphalia, 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 14°C
(58°F)		 21°C
(69°F)		 23°C
(73°F)		 27°C
(81°F)		 33°C
(91°F)		 35°C
(95°F)		 40°C
(105°F)		 36°C
(98°F)		 34°C
(93°F)		 27°C
(80°F)		 20°C
(69°F)		 15°C
(59°F)
Mean maximum 12°C
(54°F)		 16°C
(61°F)		 19°C
(66°F)		 24°C
(76°F)		 28°C
(82°F)		 30°C
(85°F)		 32°C
(90°F)		 32°C
(90°F)		 29°C
(85°F)		 23°C
(73°F)		 17°C
(63°F)		 14°C
(57°F)
Average high 5°C
(42°F)		 8°C
(46°F)		 11°C
(52°F)		 15°C
(59°F)		 18°C
(66°F)		 23°C
(74°F)		 24°C
(76°F)		 24°C
(76°F)		 20°C
(69°F)		 15°C
(60°F)		 10°C
(49°F)		 7°C
(45°F)
Daily mean 3°C
(38°F)		 5°C
(41°F)		 7°C
(45°F)		 10°C
(50°F)		 14°C
(57°F)		 19°C
(66°F)		 20°C
(67°F)		 20°C
(67°F)		 16°C
(60°F)		 12°C
(54°F)		 7°C
(45°F)		 5°C
(41°F)
Average low 2°C
(35°F)		 2°C
(36°F)		 3°C
(38°F)		 5°C
(42°F)		 9°C
(48°F)		 14°C
(57°F)		 15°C
(59°F)		 15°C
(59°F)		 11°C
(53°F)		 9°C
(49°F)		 4°C
(40°F)		 3°C
(38°F)
Mean minimum -4°C
(25°F)		 -4°C
(24°F)		 -4°C
(26°F)		 -2°C
(30°F)		 2°C
(36°F)		 9°C
(48°F)		 10°C
(50°F)		 9°C
(49°F)		 5°C
(42°F)		 3°C
(38°F)		 -2°C
(29°F)		 -3°C
(26°F)
Minimum -8°C
(18°F)		 -10°C
(14°F)		 -10°C
(15°F)		 -3°C
(26°F)		 0°C
(33°F)		 8°C
(47°F)		 8°C
(47°F)		 7°C
(44°F)		 2°C
(36°F)		 0°C
(33°F)		 -4°C
(26°F)		 -5°C
(23°F)

Compare climate in Bonn with other places

Compare temperature, precipitation, sunshine, UV index in Bonn, North Rhine-Westphalia, Germany with other places around the world.

Monthly average precipitation in Bonn, North Rhine-Westphalia, Germany §

Bonn usually has the most precipitation in July, August and December, with an average of 15 rainy days and 91 mm (3.6 inches) of precipitation per month.The driest months in Bonn are April, September and November. On average, 48 mm (1.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Bonn, North Rhine-Westphalia, 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) 72 (2.8) 68 (2.7) 72 (2.8) 36 (1.4) 70 (2.8) 68 (2.7) 93 (3.7) 80 (3.2) 55 (2.2) 71 (2.8) 54 (2.1) 100 (4.0)
Average precipitation days (≥ 1 mm) 14 12 15 9 13 11 11 15 10 14 12 19

Monthly sunshine hours in Bonn, North Rhine-Westphalia, Germany §

The sunniest months in Bonn are May, June and July, when the sun shines an average of 12 hours 55 minutes a day.Least sunny months in Bonn: 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 Bonn, North Rhine-Westphalia, 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 111 202 266 340 389 392 406 377 313 232 178 125
Mean daily daylight hours 8h 30m 10h 2m 11h 55m 13h 51m 15h 31m 16h 24m 15h 56m 14h 25m 12h 34m 10h 39m 8h 56m 8h 1m

Solar UV radiation in Bonn, North Rhine-Westphalia, Germany §

Bonn experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 7 - 8, which corresponds to the High / Very High category of sun exposure.January, February 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 Bonn UV Index data.

Average daily maximum UV levels by month for Bonn, North Rhine-Westphalia, 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) 1 2 4 5 7 8 8 7 5 4 2 1