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Warmest sea in Denmark in September

74 coastal locations in Denmark ranked by their typical September sea temperature. Region-wide average in September: 16.6°C. The top of the list is where to find the warmest swimming this month.

Warmest in September

Euro platform

18.6°C September mean in Denmark

Regional September average

16.6°C

across all 74 coastal locations in Denmark

Vs annual mean

+5.9°C

above the year-round regional average

What the Denmark sea feels like in September

At this temperature, water will feel cold compared to a swimming pool, but with a bit of experience and practice most people will find the water relatively comfortable to swim in.

Denmark monthly average 3.8°C to 18.1°C
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  • Warmest month August 18.1°C
  • Coldest month February 3.8°C
  • Annual mean 10.7°C
  • Months above 20°C 0 of 12

Where September fits in the year

September sits inside the regional pattern shown on the left. Pick a different month to see how the ranking shifts.

All twelve Denmark month rankings:

Denmark sea temperature map (live)

The map shows today's latest reading at every Denmark location. The list below is based on the typical September mean, useful for trip planning weeks or months ahead.

Zoom in to see individual locations. Click a pin for water temperatures. View list →
°C -2 0 1 3 5 7 9 11 13 15 17 19 21 24 27 30 35

Top 50 warmest Denmark locations in September

Sorted by the typical September mean built from a decade of daily readings at each location. Click any place for its 30-day chart, monthly profile, and full 10-year history.

# Location September mean
1 Euro platform Capital 18.6°C
2 Aabenraa 17.2°C
3 Sonderborg 17.2°C
4 Esbjerg 17.2°C
5 Nordby 17.2°C
6 Faaborg 17.2°C
7 Lakolk 17.1°C
8 Marstal 17.0°C
9 Nexo 17.0°C
10 Rudkøbing South Region 17.0°C
11 Svendborg 17.0°C
12 Thurø By South Region 17.0°C
13 Vindeby 17.0°C
14 Bornholm 17.0°C
15 Vordingborg 16.9°C
16 Skælskør Zealand Region 16.9°C
17 Ejby South Region 16.9°C
18 Holbæk South Region 16.9°C
19 Hvide Sande 16.9°C
20 Ronne 16.9°C
21 Rødbyhavn South Region 16.8°C
22 Stege 16.8°C
23 Nakskov 16.8°C
24 Greve 16.8°C
25 Hundested 16.8°C
Show 25 more ▸
26 Jaegerspris 16.8°C
27 Fakse Ladeplads 16.8°C
28 Thorsminde Central Denmark 16.8°C
29 Kobenhavn Capital 16.7°C
30 Nykobing Falster 16.7°C
31 Roskilde 16.7°C
32 Slipshavn South Denmark 16.7°C
33 Tisvilde 16.7°C
34 Gedser Zealand 16.7°C
35 Christianso 16.7°C
36 Korsor 16.7°C
37 Kalundborg 16.7°C
38 Gilleleje 16.7°C
39 Hornbaek 16.7°C
40 Espergærde Capital Region 16.7°C
41 Lemvig Central Region 16.6°C
42 Charlottenlund Capital Region 16.6°C
43 Helsingor 16.6°C
44 Nyborg 16.6°C
45 Copenhagen 16.6°C
46 Dragor 16.6°C
47 Kerteminde 16.5°C
48 Munkebo 16.5°C
49 Thyboron 16.5°C
50 Ebeltoft 16.5°C

Coldest 10 in Denmark in September

Same data the other way. Helpful if you want to know which Denmark coasts to avoid for swimming in September.

# Location September mean
1 Torshavn 10.7°C
2 Hirtshals 15.9°C
3 Klitmoller 15.9°C
4 Hadsund 16.0°C
5 Skagen 16.1°C
6 Hanstholm 16.1°C
7 Strandby 16.1°C
8 Blokhus 16.1°C
9 Lokken 16.1°C
10 Hals 16.1°C

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