January weather forecast
Cologne, Germany

The first month of the year in Cologne, Germany typically features chilly temperatures, resulting in a frosty landscape. Compared to December, the low temperature in January is slightly lower, dropping into negative territory at -0.6°C (30.9°F). This icy weather combined with overcast skies, turns Cologne into a winter wonderland. With just 8.5 hours of daylight and only about 1.4 hours of actual sunshine, it is one of the darker months of the year. The trend of chilly temperatures continues into February, though precipitation moderates slightly.

Temperature

January is the month when Cologne sees the lowest average temperatures, with a high of 5.4°C (41.7°F) and a low of -0.6°C (30.9°F).

Rainfall

In January, the rain falls for 18 days. Throughout January, 62mm (2.44") of precipitation is accumulated. In Cologne, during the entire year, the rain falls for 192 days and collects up to 839mm (33.03") of precipitation.

Daylight

In Cologne, the average length of the day in January is 8h and 32min.
On the first day of January in Cologne, sunrise is at 08:34 and sunset at 16:36. On the last day of the month, sunrise is at 08:10 and sunset at 17:20 CET.

Sunshine

In Cologne, the average sunshine in January is 1.4h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the average person.
Note: In January, a regular UV index of 1 translates into these guidelines:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays.