Marstal
Denmark
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Marstal, Denmark

January is the month with the coldest seawater in Marstal, Denmark, with an average sea temperature of 2.3°C (36.1°F). Note: For swimming, this is considered extremely cold, dangerous, and life-threatening. Weather in January »
In February, the average sea temperature in Marstal, Denmark, is 2.8°C (37°F). Note: For swimming, this is considered extremely cold, dangerous, and life-threatening. Weather in February »

In March, the average sea temperature in Marstal, Denmark, is 3.3°C (37.9°F). Note: For swimming, this is considered very dangerous and immediately life-threatening. Weather in March »

In April, the average sea temperature in Marstal, Denmark, is 7.1°C (44.8°F). Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Weather in April »

In Marstal, Denmark, in May, the average water temperature is 11.5°C (52.7°F). Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Weather in May »

In Marstal, Denmark, the average seawater temperature in June is 16.2°C (61.2°F). Note: For swimming, a surface water temperature of 16.2°C (61.2°F) is not enjoyable for the majority. Weather in June »

In July, the average sea temperature in Marstal, Denmark, is 18.1°C (64.6°F). Note: For most, swimming in 18.1°C (64.6°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F). Weather in July »

The month with the warmest seawater in Marstal, Denmark, is August, with an average sea temperature of 18.3°C (64.9°F). Note: For most, swimming in 18.3°C (64.9°F) is not an enjoyable activity. Weather in August »

In Marstal, Denmark, in September, the average water temperature is 16.8°C (62.2°F). Note: For swimming, a surface water temperature of 16.8°C (62.2°F) is not enjoyable for the majority. Weather in September »

In Marstal, Denmark, the average seawater temperature in October is 12.8°C (55°F). Note: Swimming in 12.8°C (55°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation. Weather in October »

In Marstal, Denmark, in November, the average water temperature is 9.1°C (48.4°F). Note: Swimming in 9.1°C (48.4°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation. Weather in November »

In December, the average sea temperature in Marstal, Denmark, is 4.8°C (40.6°F). Note: For swimming, this is considered very dangerous and immediately life-threatening. Weather in December »

When is the sea coldest in Marstal?

The month with the coldest seawater is January, with an average sea temperature of 2.3°C (36.1°F).

When are the longest days in Marstal?

June has the longest days of the year in Marstal, Denmark, with an average of 17.2h of daylight.

When is the sea warmest in Marstal?

August is the month with the warmest seawater, with an average sea temperature of 18.3°C (64.9°F).

What is the month with the shortest days in Marstal?

December has the shortest days of the year in Marstal, Denmark, with an average of 7.3h of daylight.
Average sea temperature - Marstal, Denmark

The best month for swimming (with the highest average sea temperature) is August (18.3°C).
The coldest month (with the lowest average sea temperature) is January (2.3°C).

Average daylight - Marstal, Denmark

The month with the longest days is June (Average daylight: 17.2h).
The month with shortest days is December (Average daylight: 7.3h).