Cologne weather

Our guide to the weather in Cologne during September

21

Average high

4

UV Index

50mm

Monthly rainfall

74%

Humidity

Cologne, Germany is a vibrant city with a rich history and plenty of cultural attractions to explore. September is an ideal time to visit, as the weather is usually mild. We've looked at the most up-to-date weather data for Cologne, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Cologne weather in September.

How warm is it in Cologne during September?

The temperature reaches around 21℃ during the daytime in September, falling away to 12℃ at night. The UV index will be moderate at this time of year, so not something to worry about for the average person. However, if you're going to be outside for long periods it's worth wearing a broad spectrum SPF 30+ sunscreen and UV-blocking sunglasses. Remember that bright surfaces, such as water and sand increase UV exposure.

Does it rain in Cologne during September?

On average, there will be 3 rainy days during the month, amounting to 50.2mm in total. That's broadly comparable with the amount of rain we see in England during the summer months, and would be considered dry. You're not likely to see a thunderstorm during your trip.

Is it windy in Cologne during September?

You're unlikely to experience any strong winds. Expect a light breeze that picks up slightly at times in September. With moderate air temperatures, any breeze will feel cool.

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Weather in Cologne

Our month-by-month guide to the weather and climate in Cologne

4.8

Cologne weather in

January
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February
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Cologne weather in

March
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Cologne weather in

April
18.6

Cologne weather in

May
22.6

Cologne weather in

June
24.5

Cologne weather in

July
24.8

Cologne weather in

August
20.9

Cologne weather in

September
15.5

Cologne weather in

October
10.1

Cologne weather in

November
6.1

Cologne weather in

December