Swimming in Germany in september 2025 Sea temperature by city in september

Do you want to go to the beach in Germany in september 2025? Is it the right month to go for pleasant temperatures and staying in the water for a long time? The answer is on this page with the sea temperatures in september in Germany by city and our opinion on the chances of enjoying pleasant sea conditions.

Sea temperature in Germany in september 2025

Here, find the average sea temperature in Germany in september in several coastal cities.

Hamburg

on average:

64°F

min: 60°F / max: 69°F

Boltenhagen

on average:

63°F

min: 58°F / max: 68°F

Eckernförde

on average:

63°F

min: 58°F / max: 68°F

Fehmarn

on average:

63°F

min: 58°F / max: 67°F

Graal-Müritz

on average:

63°F

min: 58°F / max: 67°F

Großenbrode

on average:

63°F

min: 58°F / max: 68°F

Halligen

on average:

64°F

min: 59°F / max: 68°F

Heringsdorf

on average:

64°F

min: 59°F / max: 68°F

Husum

on average:

63°F

min: 59°F / max: 68°F

East Frisian Islands

on average:

64°F

min: 61°F / max: 68°F

Kühlungsborn

on average:

63°F

min: 58°F / max: 67°F

Maasholm

on average:

63°F

min: 58°F / max: 68°F

Nationalpark Jasmund

on average:

62°F

min: 56°F / max: 68°F

Norden

on average:

64°F

min: 61°F / max: 68°F

Western Pomerania Lagoon Area National Park

on average:

63°F

min: 57°F / max: 68°F

Poel

on average:

63°F

min: 58°F / max: 67°F

Rerik

on average:

62°F

min: 58°F / max: 67°F

Rügen

on average:

62°F

min: 57°F / max: 68°F

Sankt Peter-Ording

on average:

64°F

min: 59°F / max: 68°F

Stralsund

on average:

62°F

min: 57°F / max: 68°F

Sylt

on average:

63°F

min: 59°F / max: 68°F

Timmendorfer Strand

on average:

63°F

min: 58°F / max: 68°F

Wangerland

on average:

64°F

min: 60°F / max: 69°F

Warnemünde

on average:

62°F

min: 58°F / max: 67°F

Wilhelmshaven

on average:

64°F

min: 60°F / max: 68°F

Zinnowitz

on average:

63°F

min: 58°F / max: 68°F

Bremerhaven

on average:

64°F

min: 60°F / max: 69°F

Cuxhaven

on average:

65°F

min: 60°F / max: 68°F

Emden

on average:

64°F

min: 61°F / max: 68°F

Flensburg

on average:

63°F

min: 58°F / max: 68°F

Greifswald

on average:

63°F

min: 58°F / max: 68°F

Kiel

on average:

63°F

min: 58°F / max: 68°F

Wismar

on average:

63°F

min: 58°F / max: 67°F

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Sea temperature in august in Germany

Sea temperature in october in Germany

Where should you go swimming in Germany in the month of september?

Swimming in Germany in september is cool (in the best case scenario)

In september in Germany swimming conditions vary by city. Details below:

Swimming in september in Hamburg, Boltenhagen, Eckernförde, Halligen, Heringsdorf, Husum, East Frisian Islands, Norden, Sankt Peter-Ording, Sylt, Timmendorfer Strand, Wangerland, Wilhelmshaven, Bremerhaven, Cuxhaven, Emden, Flensburg and Wismar is possible but the sea is generally cool. So though the sea temperature may sometimes reach 69°F, it can also go as low as 60°F. Note that the average is 64°F.

Swimming in september in Fehmarn, Graal-Müritz, Großenbrode, Kühlungsborn, Maasholm, Nationalpark Jasmund, Western Pomerania Lagoon Area National Park, Poel, Rerik, Rügen, Stralsund, Warnemünde, Zinnowitz, Greifswald and Kiel is possible... with a wetsuit! Indeed, the water is cold at this time of year with an average temperature of 63°F (min: 58°F/max: 67°F).

Where to go swimming in Germany in september: the map of sea temperatures

ideal swimming

pleasant swimming

cool swimming

cold swimming

freezing swimming

Water temperature and seasonal norms in september

Hamburg

	August	September	October
Average sea temperature	66°F	64°F	58°F
Minimum sea temperature	63°F	60°F	53°F
Maximum sea temperature	69°F	69°F	63°F
Average outside temperature	68°F	61°F	52°F
Maximum outside temperature	74°F	67°F	58°F
Minimum outside temperature	61°F	54°F	49°F
Precipitation	3.6in	2.6in	3in
Number of days of precipitation	6 jour(s) (20%)	4 jour(s) (12%)	5 jour(s) (17%)
Cloud cover	42%	47%	56%
Our opinion	cool swimming	cool swimming	freezing swimming

More information on swimming in Hamburg in september

Boltenhagen

	August	September	October
Average sea temperature	66°F	63°F	56°F
Minimum sea temperature	62°F	58°F	51°F
Maximum sea temperature	70°F	68°F	62°F
Average outside temperature	67°F	61°F	54°F
Maximum outside temperature	72°F	67°F	58°F
Minimum outside temperature	63°F	56°F	50°F
Precipitation	3.1in	2in	2in
Number of days of precipitation	5 jour(s) (16%)	3 jour(s) (9%)	3 jour(s) (10%)
Cloud cover	38%	43%	55%
Our opinion	cool swimming	cool swimming	freezing swimming

Eckernförde

	August	September	October
Average sea temperature	65°F	63°F	57°F
Minimum sea temperature	62°F	58°F	51°F
Maximum sea temperature	70°F	68°F	61°F
Average outside temperature	67°F	61°F	52°F
Maximum outside temperature	72°F	65°F	58°F
Minimum outside temperature	61°F	56°F	49°F
Precipitation	2.5in	1.9in	2.1in
Number of days of precipitation	4 jour(s) (11%)	3 jour(s) (11%)	3 jour(s) (9%)
Cloud cover	42%	48%	58%
Our opinion	cool swimming	cool swimming	freezing swimming

Fehmarn

	August	September	October
Average sea temperature	65°F	63°F	56°F
Minimum sea temperature	61°F	58°F	50°F
Maximum sea temperature	70°F	67°F	62°F
Average outside temperature	67°F	61°F	54°F
Maximum outside temperature	68°F	63°F	56°F
Minimum outside temperature	65°F	59°F	52°F
Precipitation	5.3in	4.2in	4in
Number of days of precipitation	9 jour(s) (30%)	7 jour(s) (23%)	7 jour(s) (22%)
Cloud cover	37%	44%	55%
Our opinion	cool swimming	cold swimming	freezing swimming

Graal-Müritz

	August	September	October
Average sea temperature	65°F	63°F	56°F
Minimum sea temperature	60°F	58°F	50°F
Maximum sea temperature	69°F	67°F	61°F
Average outside temperature	68°F	61°F	52°F
Maximum outside temperature	74°F	67°F	58°F
Minimum outside temperature	63°F	56°F	49°F
Precipitation	4.1in	2.8in	3.1in
Number of days of precipitation	7 jour(s) (22%)	5 jour(s) (16%)	5 jour(s) (16%)
Cloud cover	36%	42%	53%
Our opinion	cool swimming	cold swimming	freezing swimming

List of coastal cities in Germany

Hamburg in september	cool swimming
Boltenhagen in september	cool swimming
Eckernförde in september	cool swimming
Fehmarn in september	cold swimming
Graal-Müritz in september	cold swimming
Großenbrode in september	cold swimming
Halligen in september	cool swimming
Heringsdorf in september	cool swimming
Husum in september	cool swimming
East Frisian Islands in september	cool swimming
Kühlungsborn in september	cold swimming
Maasholm in september	cold swimming
Nationalpark Jasmund in september	cold swimming
Norden in september	cool swimming
Western Pomerania Lagoon Area National Park in september	cold swimming
Poel in september	cold swimming
Rerik in september	cold swimming
Rügen in september	cold swimming
Sankt Peter-Ording in september	cool swimming
Stralsund in september	cold swimming
Sylt in september	cool swimming
Timmendorfer Strand in september	cool swimming
Wangerland in september	cool swimming
Warnemünde in september	cold swimming
Wilhelmshaven in september	cool swimming
Zinnowitz in september	cold swimming
Bremerhaven in september	cool swimming
Cuxhaven in september	cool swimming
Emden in september	cool swimming
Flensburg in september	cool swimming
Greifswald in september	cold swimming
Kiel in september	cold swimming
Wismar in september	cool swimming