September could be a good time to visit Cologne, as the weather is generally fine. The average high temperature is around +68°F, and there are typically 6 sunny days in September. However, expect about 15 rainy days, and total monthly rainfall of approximately 58 mm. The weather is changeable so pack for every eventuality. Search flightsin 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
6 ☀️
Sunny Days
8 ⛅️
Cloudy
15 🌦
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 +77°F with a maximum of +90°F and a minimum of +50°F.
The average maximum temperature goes up 9% by the end of the month, compared with the beginning of the month, from +66°F to +70°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.
August
September
October
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
74 mm
58 mm
63 mm
Wind
2 m/s
2 m/s
2 m/s
Humidity
72%
77%
81%
Air pressure
1015 HPa
1016 HPa
1015 HPa
Sunny days
6
6
5
Cloudy days
6
8
9
Rainy days
16
15
16
Snowy days
0
0
0
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 74 mm to 58 mm.Humidity rises from 72% to 77%.The average wind speed doesn’t change much during September, staying around 2 m/s.The amount of sunny days stay about the same, averaging 6 sunny days during the month.
October brings much the same weather, it remains ok.
Wind speed in Cologne in September based on historical data.
Last Year
Historical Data
The average wind speed is 2 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 decreasing during September, going from 2 m/s to 1 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
Total precipitation in September is about 59 mm, with a 37% chance of rain on a typical day. The maximum amount of rainfall per day is around 15 mm, which is considered light rain.September is a pretty wet month with over 11 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 52% chance of precipitation and 75 mm of rainfall per day. February, on the other hand, is the driest month with a mere 34% chance of precipitation and 44 mm of rainfall per day.
How was the weather last September in Cologne?
This is the weather in Cologne in September 2023:
1 September
🌧️
+67°F
2 September
☀️
+78°F
3 September
☀️
+76°F
4 September
☀️
+81°F
5 September
☀️
+85°F
6 September
☀️
+87°F
7 September
☀️
+87°F
8 September
☀️
+88°F
9 September
☀️
+89°F
10 September
☀️
+89°F
11 September
☀️
+89°F
12 September
☀️
+80°F
13 September
☁️
+74°F
14 September
☀️
+71°F
15 September
☀️
+77°F
16 September
☀️
+83°F
17 September
☀️
+83°F
18 September
☀️
+79°F
19 September
☀️
+70°F
20 September
☀️
+77°F
21 September
☀️
+73°F
22 September
☀️
+67°F
23 September
☁️
+65°F
24 September
☀️
+71°F
25 September
☀️
+73°F
26 September
☀️
+76°F
27 September
☀️
+77°F
28 September
☀️
+75°F
29 September
☀️
+78°F
30 September
☀️
+69°F
In September 2023 Cologne had 27 sunny days, 2 cloudy days, and 1 rainy days. The average maximum temperature was +77°F, with an absolute maximum of +90°F and a minimum of +66°F. The average humidity was 78%, with a maximum of 100% and a minimum of 47%. The average wind speed was 2 m/s, with a maximum of 8 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 1985 (+54°F) and the highest in 2022 (+63°F). The driest year was 2018 with only 570 mm of rainfall, and the wettest year was 2023 with 1162 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.
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, 2023.
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.