If you plan to visit Copenhague in September, the weather is typically alright, with an average high temperature of +63°F during the day and approximately 5 sunny days. Expect some rainy, though, as there are typically 15 rainy days in the month and around 57 mm of precipitation. The weather is changeable so you may have to pack for every eventuality. Search flightsin one click on Avionero.
Average weather
☀️
+63°F
Avg. max. temperature
+36°F
Min.
+82°F
Max.
57 mm
Total precipitation
78%
Avg. humidity
5 m/s
Avg. wind
5 ☀️
Sunny Days
9 ⛅️
Cloudy
15 🌦
Rainy
Our opinion: Copenhague has OK weather in September.
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Average temperature in Copenhague in September
Here are the expected maximum, average and minimum temperatures in Copenhague for September based on the historical data.
Last Year
Historical Data
Going from a maximum of +79°F during the day to a minimum of +50°F during the night, the temperature in September averages around +70°F.
The average maximum temperature goes down 19% by the end of the month, compared with the beginning of the month, from +70°F to +64°F.
Is Copenhague warm or cold in September?
Copenhague 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 Copenhague:
Water temperature in Copenhague in September
Water in Copenhague in September is Fresh. It varies from +56°F to +67°F, with an average of +61°F.This is almost similar to the air temperature, which averages +63°F.
The water temperature in September is one of the warmest of the entire year:
The warmest water temperatures in Copenhague are reached in August, when the average sea temperature rises to +64°F. The coldest water temperatures are in February, with an average of +36°F.
Can you swim in Copenhague in September?
Water temperature (+61°F) in Copenhague in September might be suited for short swims and acclimatized swimmers might find it refreshing.
🦭
Cold
Below +61°F
🏄♂️
Fresh
61°F - 70°F
🏊
Comfortable
70°F - 77°F
👙
Warm
77°F - 82°F
🔥
Very warm
+82°C and up
Think of bringing a full-body or shorty wetsuit (3mm-5mm thickness) to provide insulation and maintain body heat.
Climate in Copenhague in September
Copenhague weather looks like this, on average, in September and the surrounding months.
August
September
October
Avg. temperature
+70°F
+63°F
+54°F
Min. temperature
+43°F
+36°F
+21°F
Max. temperature
+84°F
+82°F
+72°F
Rainfall
63 mm
57 mm
60 mm
Wind
4 m/s
5 m/s
6 m/s
Avg. water temperature
+64°F
+61°F
+55°F
Humidity
75%
78%
83%
Air pressure
1012 HPa
1013 HPa
1013 HPa
Sunny days
6
5
3
Cloudy days
8
9
10
Rainy days
14
15
18
Snowy days
0
0
0
September weather is still as ok as in 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 63 mm to 57 mm.Humidity rises from 75% 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 6 sunny days in August to 5 in September.
October brings much the same weather, it remains ok.
Wind speed in Copenhague 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 Copenhague is gradually increasing during September, going from 4 m/s to 6 m/s over the course of the month.
Rain
Amount of rainfall in mm during September in Copenhague based on historical data.
Last Year
Historical Data
Typically, there is a 30% chance of rain on an average day in September, with total rainfall of approximately 19 mm. The maximum amount of rainfall per day is around 5 mm, which is considered light rain.On average, there are about 9 rainy days during September, so prepare to bring an umbrella.
September is one of the rainiest months in Copenhague, here is a comparison with other months, total mm:
Copenhague wettest month is August, where a typical day has a 45% chance of precipitation and 63 mm of rainfall per day. February, on the other hand, is the driest month with a mere 25% chance of precipitation and 23 mm of rainfall per day.
How was the weather last September in Copenhague?
This is the weather in Copenhague in September 2024:
1 September
🌧️
+70°F
2 September
☀️
+70°F
3 September
☁️
+67°F
4 September
☀️
+76°F
5 September
☀️
+78°F
6 September
☀️
+73°F
7 September
☁️
+70°F
8 September
☁️
+77°F
9 September
☀️
+75°F
10 September
☁️
+78°F
11 September
🌫️
+68°F
12 September
🌧️
+72°F
13 September
☁️
+66°F
14 September
☁️
+66°F
15 September
☁️
+65°F
16 September
☁️
+69°F
17 September
☁️
+72°F
18 September
☁️
+72°F
19 September
☁️
+66°F
20 September
☁️
+69°F
21 September
☀️
+72°F
22 September
☁️
+67°F
23 September
☁️
+62°F
24 September
☁️
+65°F
25 September
☁️
+63°F
26 September
☁️
+67°F
27 September
☁️
+72°F
28 September
☁️
+71°F
29 September
🌧️
+65°F
30 September
☀️
+64°F
In September 2024 Copenhague had 7 sunny days, 19 cloudy days, and 3 rainy days. The average maximum temperature was +70°F, with an absolute maximum of +79°F and a minimum of +63°F. The average humidity was 84%, with a maximum of 100% and a minimum of 56%. The average wind speed was 4 m/s, with a maximum of 13 m/s and a minimum of 0 m/s.
Are you planning a trip in September?
Climate Change Over the Years
This is how Copenhague climate has changed over the last 43 years.
The climate in Copenhague in September has not changed that much over the last 43 years.
The average temperature was the lowest in 1987 (+48°F) and the highest in 2020 (+56°F). The driest year was 2018 with only 322 mm of rainfall, and the wettest year was 2023 with 1019 mm.
FAQ
Frequently asked questions about the weather in Copenhague in September:
Is September a good time to visit Copenhague?
It’s always a good time to visit Copenhague, 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 Copenhague in September?
September has mild temperatures in Copenhague. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!
Can you swim in Copenhague in September?
In general, you can swim in Copenhague in September, if you want to, at an average water temperature of +61°F. But it will feel quite cool, and some precautions are necessary to ensure your comfort and safety.
Is Copenhague rainy in September?
Copenhague 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 Copenhague in September?
Usually, it’s not very sunny in Copenhague 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.
For this page, we’ve looked at the typical weather in Copenhague, 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.
