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Cologne in September: Weather, Average temperature and Climate

Take a look at past year’s weather for Cologne in September and see if it is worth visiting.
Check flight prices to Cologne on Avionero:
September

Weather in Cologne in September 2024

OK Weather
Mild
☁️
Cloudy
If you plan to visit Cologne in September, the weather is typically alright, with an average high temperature of +68°F during the day and approximately 7 sunny days. Expect some rainy, though, as there are typically 7 rainy days in the month and around 58 mm of precipitation. The weather is changeable so you may have to pack for every eventuality. Search flights in one click on Avionero.

Average weather

☀️
+68°F
Avg. max. temperature
+32°F
Min.
+91°F
Max.
58 mm
Total precipitation
77%
Avg. humidity
2 m/s
Avg. wind
7 ☀️
Sunny Days
16 ⛅️
Cloudy
7 🌦
Rainy
Our opinion: Cologne has OK weather in September.

Average temperature in Cologne in September

Here are the expected maximum, average and minimum temperatures in Cologne for September based on the historical data.
Last Year
Historical Data

The expected average maximum temperature in September is +68°F with a maximum of +90°F and a minimum of +41°F.

The average maximum temperature goes down 30% by the end of the month, compared with the beginning of the month, from +79°F to +64°F.

Is Cologne warm or cold in September?

Cologne is typically mild in September.

Maximum temperatures go down compared to the previous month from +73°F to +68°F. The minimum temperature also goes down from +57°F to +52°F.

Pack a light jacket as it will be warm in the day and cool in the evenings.

Take a look at how September is compared to other months in Cologne:

Climate in Cologne in September

Cologne weather looks like this, on average, in September and the surrounding months.
AugustSeptemberOctober
Avg. temperature
+73°F+68°F+59°F
Min. temperature
+43°F+32°F+23°F
Max. temperature
+100°F+91°F+82°F
Rainfall
72 mm58 mm62 mm
Wind
1 m/s2 m/s2 m/s
Humidity
71%77%80%
Air pressure
1014 HPa1015 HPa1014 HPa
Sunny days
876
Cloudy days
151617
Rainy days
878
Snowy days
000

September typically has worse weather conditions compared to August. It’s getting colder in September. From +73°F in the day, the average maximum temperature lowers to +68°F. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 72 mm to 58 mm. Humidity rises from 71% to 77%. Winds are stronger in comparison to August, going up from 1 m/s to 2 m/s on average. The days becoming less sunny, going from 8 sunny days in August to 7 in September.

October brings much the same weather, it remains ok.

Wind

Wind speed in Cologne in September based on historical data.
Last Year
Historical Data

The average wind speed is 3 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.

The average wind speed in Cologne is gradually increasing during September, going from 2 m/s to 2 m/s over the course of the month.

Rain

Amount of rainfall in mm during September in Cologne based on historical data.
Last Year
Historical Data
A chance of rain on a typical day in September stands at 60%, leading to total precipitation of around 107 mm. The maximum amount of rainfall per day is around 20 mm, which is considered light rain. September is a pretty wet month with over 18 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how September is compared with other months in the amount of precipitation, total mm:
Cologne wettest month is July, where a typical day has a 26% chance of precipitation and 74 mm of rainfall per day. February, on the other hand, is the driest month with a mere 21% chance of precipitation and 45 mm of rainfall per day.

How was the weather last September in Cologne?

This is the weather in Cologne in September 2023:
1 September
☀️
+79°F
2 September
☀️
+81°F
3 September
☀️
+79°F
4 September
☀️
+83°F
5 September
☀️
+87°F
6 September
☀️
+89°F
7 September
☀️
+79°F
8 September
🌧️
+71°F
9 September
☀️
+70°F
10 September
🌧️
+65°F
11 September
☀️
+71°F
12 September
☀️
+79°F
13 September
☀️
+80°F
14 September
🌧️
+65°F
15 September
☁️
+64°F
16 September
☁️
+61°F
17 September
☁️
+59°F
18 September
🌧️
+56°F
19 September
☁️
+62°F
20 September
☀️
+61°F
21 September
☀️
+64°F
22 September
☀️
+68°F
23 September
☀️
+66°F
24 September
☀️
+61°F
25 September
☀️
+64°F
26 September
🌧️
+57°F
27 September
🌧️
+53°F
28 September
🌧️
+56°F
29 September
☀️
+60°F
30 September
☀️
+65°F
In September 2023 Cologne had 19 sunny days, 4 cloudy days, and 7 rainy days. The average maximum temperature was +68°F, with an absolute maximum of +90°F and a minimum of +52°F. The average humidity was 71%, with a maximum of 97% and a minimum of 25%. The average wind speed was 3 m/s, with a maximum of 11 m/s and a minimum of 0 m/s.
Are you planning a trip in September?

Climate Change Over the Years

This is how Cologne climate has changed over the last 43 years.

The climate in Cologne in September has not changed that much over the last 43 years.

The average temperature was the lowest in 2001 (+63°F) and the highest in 2016 (+76°F). The driest year was 2006 with only 17 mm of rainfall, and the wettest year was 1993 with 174 mm.

FAQ

Frequently asked questions about the weather in Cologne in September:

Is September a good time to visit Cologne?

It’s always a good time to visit Cologne, but the weather is changeable in September, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in Cologne in September?

September has mild temperatures in Cologne. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!

Is Cologne rainy in September?

Cologne is often rainy in September. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Cologne in September?

Usually, it’s not very sunny in Cologne in September, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in Germany

Check out the weather for other cities in Germany.

Monthly weather in Cologne

Source of the data

For this page, we’ve looked at the typical weather in Cologne, based on historical hourly weather data from January 1, 1979, to December 31, 2022.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.