Sea temperature in Denmark
Live water temperatures and swimming conditions across 76 beaches on the Denmark coast.
Best time to swim in Denmark
The sea in Denmark peaks in August, when the water averages around 18°C.
On average, 0 months a year sit above 20°C — the threshold most swimmers describe as pleasant without a wetsuit.
Outside peak season the water drops toward 7°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable.
The coldest month is typically February at around 3°C, when cold-water swimmers dominate the coast.
Denmark sea temperature history
Long-term climatology for Denmark shows an annual mean sea temperature of 10°C, ranging from 3°C in winter to 18°C at the summer peak.
The seasonal swing is roughly 15°C between the coldest and warmest month — a useful yardstick when comparing years or checking whether the current sea is running above or below average.
Recent decades have trended slightly warmer at Denmark, in line with regional sea-surface temperature records for the wider basin.
Monthly averages below are drawn from multi-decadal climatology and are updated as new observations arrive.
Values are area averages; individual beaches vary by exposure and depth.
Denmark sea temperature: frequently asked questions
What is the warmest month to swim in Denmark?
August is the warmest month in Denmark, when the sea averages about 18°C. Late-season warmth often persists a few weeks after peak.
When is the sea coldest in Denmark?
The coldest month in Denmark is typically February, when the water averages around 3°C. Cold-water swimmers and surfers dominate this period.
When can you swim in Denmark without a wetsuit?
The sea in Denmark rarely climbs above 20°C, so a wetsuit is recommended year-round for anything longer than a quick dip.
Do I need a wetsuit in Denmark?
Outside peak summer the water in Denmark drops toward 7°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable. In peak months most swimmers go without.
What is the average sea temperature in Denmark?
The long-term annual mean sea temperature in Denmark is about 10°C, based on multi-decadal climatology of the surrounding waters.
How do I check the current sea temperature in Denmark?
The live reading at the top of this page shows the current sea temperature in Denmark, updated hourly from marine buoy and satellite data. The 7-day forecast covers water, air, waves, wind and UV for the week ahead.
Warmest beaches in Denmark right now
| Beach | Region | Sea | Swim score |
|---|---|---|---|
| Skagen Sønderstrand | North Sea Coast | — | — |
| Henne Strand | North Sea Coast | — | — |
| Blokhus | North Sea Coast | — | — |
| Marielyst | Baltic Coast | — | — |
| Dueodde | Baltic Coast | — | — |
| Bellevue | Baltic Coast | — | — |
| Amager Strand | Baltic Coast | — | — |
| Bellevue Beach | Capital Region | — | — |
| Amager Strand | Capital Region | — | — |
| Hornbæk Beach | Capital Region | — | — |
| Tisvildeleje Beach | Capital Region | — | — |
| Liseleje Beach | Capital Region | — | — |
| Marielyst Beach | Region Zealand | — | — |
| Karrebæksminde Beach | Region Zealand | — | — |
| Stevns Beach | Region Zealand | — | — |
| Dueodde Beach | Bornholm | — | — |
| Balka Strand | Bornholm | — | — |
| Sandvig Beach | Bornholm | — | — |
| Skagen Sønderstrand | North Jutland | — | — |
| Grenen | North Jutland | — | — |
| Løkken Beach | North Jutland | — | — |
| Blokhus Beach | North Jutland | — | — |
| Saltum Strand | North Jutland | — | — |
| Tornby Strand | North Jutland | — | — |
| Lønstrup Beach | North Jutland | — | — |
| Klitmøller Beach | North Jutland | — | — |
| Vorupør Beach | North Jutland | — | — |
| Henne Strand | South Jutland | — | — |
| Vejers Strand | South Jutland | — | — |
| Blåvand Beach | South Jutland | — | — |
| Hvide Sande Beach | Central Jutland | — | — |
| Søndervig Beach | Central Jutland | — | — |
| Vester Husby Beach | Central Jutland | — | — |
| Fanø Beach | South Jutland | — | — |
| Rømø Beach | South Jutland | — | — |
| Ebeltoft Beach | Central Jutland | — | — |
| Saksild Strand | Central Jutland | — | — |
| Mommark Beach | South Jutland | — | — |
| Aabenraa Beach | South Jutland | — | — |
| Blokhus Beach | North Jutland | — | — |
| Lokken Beach | North Jutland | — | — |
| Saltum Beach | North Jutland | — | — |
| Skagen Sonderstrand | North Jutland | — | — |
| Grenen Beach | North Jutland | — | — |
| Gammel Skagen | North Jutland | — | — |
| Hirtshals Beach | North Jutland | — | — |
| Kandestederne Beach | North Jutland | — | — |
| Tversted Beach | North Jutland | — | — |
| Klitmoller Beach | West Jutland | — | — |
| Vorupor Beach | West Jutland | — | — |
| Agger Beach | West Jutland | — | — |
| Thyboron Beach | West Jutland | — | — |
| Sondervig Beach | West Jutland | — | — |
| Vejers Beach | West Jutland | — | — |
| Blaavand Beach | West Jutland | — | — |
| Henne Beach | West Jutland | — | — |
| Fano Beach | West Jutland | — | — |
| Ronne Beach | Bornholm | — | — |
| Dueodde Beach | Bornholm | — | — |
| Balka Beach | Bornholm | — | — |
| Sandvig Beach | Bornholm | — | — |
| Marielyst Beach | Zealand | — | — |
| Tisvildeleje Beach | Zealand | — | — |
| Hornbaek Beach | Zealand | — | — |
| Liseleje Beach | Zealand | — | — |
| Bellevue Beach | Zealand | — | — |
| Amager Strand | Zealand | — | — |
| Charlottenlund Beach | Zealand | — | — |
| Hundested Beach | Zealand | — | — |
| Ebeltoft Beach | East Jutland | — | — |
| Marselisborg Beach | East Jutland | — | — |
| Aarhus Ballehage | East Jutland | — | — |
| Fjellerup Beach | East Jutland | — | — |
| Middelfart Beach | Funen | — | — |
| Aeroe Beach | Funen | — | — |
| Bogense Beach | Funen | — | — |