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City in North Rhine-Westphalia, Germany

Cologne weather by month and the best time to visit

Updated October 2026Sources
May–SepBest time to visit

When to go to Cologne

May–Sep for beer gardens and the Rhine; Carnival starts 11 Nov and peaks Feb–Mar, with street parties. Christmas markets in Dec. Hotels spike during trade fairs.

Cologne weather by month

Average daily high, rainfall and conditions.

PleasantHotRainyCool or coldBest months
-5°5°15°25°JFMAMJJASOND
Average highAverage lowRainfall

Monthly averages

MonthHighLowRainHumidityConditions
January5°C40°F-1°C30°F74 mm92%Cold
February6°C43°F-1°C31°F62 mm89%Cold
March10°C50°F1°C34°F59 mm84%Cold
April15°C60°F5°C40°F44 mm78%Cool
May19°C66°F9°C47°F64 mm77%Pleasant
June23°C73°F12°C54°F68 mm73%Pleasant
July25°C77°F14°C58°F75 mm69%Pleasant
August25°C76°F14°C57°F79 mm70%Pleasant
September21°C69°F10°C50°F57 mm74%Pleasant
October15°C60°F7°C44°F61 mm83%Cool
November9°C49°F3°C38°F70 mm91%Cold
December5°C42°F0°C33°F77 mm93%Cold

Best months across Germany

PlaceBest monthsWarmest month
BerlinMay–SepJul (26°C)
MunichMay–SepJul (24°C)
HamburgMay–SepJul (23°C)
FrankfurtMay–SepJul (27°C)
CologneMay–SepJul (25°C)
DresdenMay–SepJul (26°C)
HeidelbergApr–Jun, Sep–OctJul (27°C)
DüsseldorfMay–SepJul (25°C)
LeipzigMay–SepJul (26°C)
StuttgartApr–Jun, Sep–OctJul (26°C)
NurembergMay–SepJul (26°C)
Black ForestMay–Jun, Sep–OctJul (25°C)
FreiburgMay–OctJul (25°C)
Rothenburg ob der TauberApr–Jun, Sep–OctJul (25°C)
Garmisch-PartenkirchenJun–Sep, Dec–FebJul (24°C)
BremenMay–SepJul (23°C)

Quick answers

What is the best month to visit Cologne?

May–Sep. May–Sep for beer gardens and the Rhine; Carnival starts 11 Nov and peaks Feb–Mar, with street parties. Christmas markets in Dec. Hotels spike during trade fairs.

When is the rainy season in Cologne?

Rain peaks in August with about 79 mm. No month averages 150 mm or more.

What is the hottest month in Cologne?

July, with average highs of 25°C (77°F).

How cold does Cologne get?

The coolest nights are in January, averaging -1°C (30°F).

More about Cologne

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Sources

Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.