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Copenhagen in September: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Copenhagen in September will be like? Take a look at our weather guide for Copenhagen, based on historical data.
Check flight prices to Copenhagen on Avionero:
September

Weather in Copenhagen in September 2024

OK Weather
Mild
☁️
Cloudy
September could be a good time to visit Copenhagen, as the weather is generally fine. The average high temperature is around +63°F, and there are typically 6 sunny days in September. However, expect about 7 rainy days, and total monthly rainfall of approximately 56 mm. The weather is changeable so pack for every eventuality. Search flights in one click on Avionero.

Average weather

☀️
+63°F
Avg. max. temperature
+36°F
Min.
+79°F
Max.
56 mm
Total precipitation
78%
Avg. humidity
5 m/s
Avg. wind
6 ☀️
Sunny Days
17 ⛅️
Cloudy
7 🌦
Rainy
Our opinion: Copenhagen has OK weather in September.

Average temperature in Copenhagen in September

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

Going from a maximum of +70°F during the day to a minimum of +43°F during the night, the temperature in September averages around +63°F.

The average maximum temperature goes down 40% by the end of the month, compared with the beginning of the month, from +68°F to +57°F.

Is Copenhagen warm or cold in September?

Copenhagen is typically mild in September.

Maximum temperatures go down compared to the previous month from +70°F to +63°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 Copenhagen:

Climate in Copenhagen in September

Copenhagen weather looks like this, on average, in September and the surrounding months.
AugustSeptemberOctober
Avg. temperature
+70°F+63°F+54°F
Min. temperature
+43°F+36°F+21°F
Max. temperature
+84°F+79°F+72°F
Rainfall
60 mm56 mm58 mm
Wind
4 m/s5 m/s5 m/s
Humidity
74%78%82%
Air pressure
1012 HPa1013 HPa1012 HPa
Sunny days
864
Cloudy days
161720
Rainy days
777
Snowy days
000

September typically has worse weather conditions compared to August. It’s getting colder in September. From +70°F in the day, the average maximum temperature lowers to +63°F. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 60 mm to 56 mm. Humidity rises from 74% to 78%. Winds are stronger in comparison to August, going up from 4 m/s to 5 m/s on average. The days becoming less sunny, going from 8 sunny days in August to 6 in September.

October brings much the same weather, it remains ok.

Wind

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

The average wind speed is 4 m/s getting up to 9 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Copenhagen is gradually increasing during September, going from 2 m/s to 5 m/s over the course of the month.

Rain

Amount of rainfall in mm during September in Copenhagen based on historical data.
Last Year
Historical Data
Total precipitation in September is about 98 mm, with a 50% chance of rain on a typical day. The maximum amount of rainfall per day is around 17 mm, which is considered light rain. September is a pretty wet month with over 15 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
September is one of the rainiest months in Copenhagen, here is a comparison with other months, total mm:
Copenhagen wettest month is August, where a typical day has a 23% chance of precipitation and 60 mm of rainfall per day. February, on the other hand, is the driest month with a mere 10% chance of precipitation and 21 mm of rainfall per day.

How was the weather last September in Copenhagen?

This is the weather in Copenhagen in September 2023:
1 September
☀️
+68°F
2 September
☀️
+68°F
3 September
☁️
+65°F
4 September
☁️
+68°F
5 September
☁️
+70°F
6 September
☁️
+66°F
7 September
☁️
+68°F
8 September
☁️
+67°F
9 September
🌧️
+65°F
10 September
☁️
+66°F
11 September
☁️
+64°F
12 September
☁️
+66°F
13 September
🌧️
+66°F
14 September
☁️
+63°F
15 September
☁️
+61°F
16 September
☁️
+61°F
17 September
☁️
+62°F
18 September
🌧️
+55°F
19 September
☁️
+61°F
20 September
☀️
+59°F
21 September
☀️
+60°F
22 September
☁️
+62°F
23 September
☁️
+61°F
24 September
☁️
+62°F
25 September
☁️
+61°F
26 September
🌧️
+57°F
27 September
🌧️
+55°F
28 September
🌧️
+55°F
29 September
🌧️
+55°F
30 September
🌧️
+56°F
In September 2023 Copenhagen had 4 sunny days, 18 cloudy days, and 8 rainy days. The average maximum temperature was +63°F, with an absolute maximum of +70°F and a minimum of +55°F. The average humidity was 77%, with a maximum of 100% and a minimum of 32%. The average wind speed was 4 m/s, with a maximum of 12 m/s and a minimum of 0 m/s.
Are you planning a trip in September?

Climate Change Over the Years

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

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

The average temperature was the lowest in 1993 (+57°F) and the highest in 2016 (+71°F). The driest year was 2006 with only 22 mm of rainfall, and the wettest year was 1993 with 154 mm.

FAQ

Frequently asked questions about the weather in Copenhagen in September:

Is September a good time to visit Copenhagen?

It’s always a good time to visit Copenhagen, 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 Copenhagen in September?

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

Is Copenhagen rainy in September?

Copenhagen 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 Copenhagen in September?

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

Other cities in Denmark

Check out the weather for other cities in Denmark.

Monthly weather in Copenhagen

Source of the data

For this page, we’ve looked at the typical weather in Copenhagen, 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.