Monthly climate in Koeln, North Rhine-Westphalia, Germany

Last updated: June 28, 2022

Under the Köppen–Geiger climate classification Koeln features a oceanic climate (Cfb). Temperatures typically range between 3 °C (38 °F) and 20 °C (68 °F) through the year, but rarely can drop to -9 °C (16 °F) or can rise to as high as 40 °C (104 °F). The average annual precipitation amounts to about 964 mm (37.9 inches) and receives 159 rainy days on the 1 mm (0.04 inches) threshold annually. Koeln enjoys an average of 3327 hours of sunshine throughout the year, and daylight varies from 7 hours 58 minutes to 16 hours 27 minutes per day.

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

The warmest months in Koeln are June, July and August, with daily mean temperatures ranging from 19 to 20 °C (67 - 68 °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, Koeln experiences 37 days above 25 °C (77.0 °F) and 29 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Koeln, 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 15°C
(59°F)
20°C
(68°F)
22°C
(72°F)
27°C
(81°F)
33°C
(91°F)
35°C
(95°F)
40°C
(104°F)
37°C
(99°F)
34°C
(93°F)
27°C
(80°F)
20°C
(68°F)
15°C
(59°F)
Mean maximum 12°C
(54°F)
15°C
(60°F)
19°C
(66°F)
24°C
(76°F)
28°C
(83°F)
30°C
(86°F)
32°C
(90°F)
32°C
(91°F)
29°C
(85°F)
23°C
(73°F)
17°C
(62°F)
14°C
(57°F)
Average high 5°C
(42°F)
8°C
(46°F)
11°C
(52°F)
15°C
(59°F)
19°C
(66°F)
24°C
(75°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
(51°F)
14°C
(57°F)
19°C
(67°F)
20°C
(68°F)
20°C
(68°F)
16°C
(60°F)
12°C
(54°F)
7°C
(45°F)
5°C
(41°F)
Average low 1°C
(35°F)
2°C
(36°F)
3°C
(38°F)
5°C
(42°F)
9°C
(49°F)
14°C
(58°F)
15°C
(59°F)
15°C
(60°F)
11°C
(53°F)
9°C
(49°F)
5°C
(40°F)
3°C
(38°F)
Mean minimum -4°C
(25°F)
-4°C
(25°F)
-3°C
(26°F)
-2°C
(30°F)
2°C
(36°F)
9°C
(48°F)
10°C
(50°F)
9°C
(49°F)
6°C
(43°F)
3°C
(38°F)
-1°C
(30°F)
-3°C
(27°F)
Minimum -8°C
(17°F)
-9°C
(16°F)
-9°C
(16°F)
-3°C
(26°F)
0°C
(33°F)
8°C
(46°F)
8°C
(48°F)
7°C
(44°F)
3°C
(37°F)
1°C
(34°F)
-4°C
(26°F)
-5°C
(24°F)

Compare climate in Koeln with other places

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

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

Koeln usually has the most precipitation in July, October and December, with an average of 15 rainy days and 107 mm (4.2 inches) of precipitation per month. The driest months in Koeln are April, June and September. On average, 54 mm (2.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Koeln, 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) 91 (3.6) 86 (3.4) 91 (3.6) 38 (1.5) 66 (2.6) 60 (2.4) 97 (3.8) 78 (3.1) 65 (2.5) 97 (3.8) 67 (2.6) 127 (5.0)
Average precipitation days (≥ 1 mm) 15 13 15 9 13 10 12 14 10 15 13 20

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

The sunniest months in Koeln are May, June and July, when the sun shines an average of 12 hours 46 minutes a day. Least sunny months in Koeln: January, November and December receive an average of 4 hours 37 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Koeln, 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 113 202 267 336 387 383 405 377 313 232 183 129
Mean daily daylight hours 8h 27m 10h 0m 11h 55m 13h 52m 15h 34m 16h 27m 15h 59m 14h 27m 12h 34m 10h 38m 8h 53m 7h 58m

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

Koeln experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 6 - 9, which corresponds to the High / 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 Koeln UV Index data.

Average daily maximum UV levels by month for Koeln, North Rhine-Westphalia, Germany. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 1 3 4 5 6 5 9 8 5 4 2 1