Climate and monthly weather forecast
Weather in January
January and February, with an average sea temperature of 4.4°C (39.9°F), are months with the coldest seawater in Heligoland, Germany. Note: In the activity of swimming, this is perceived as lethal and exceedingly dangerous. Weather in January »
Weather in February
The months with the coldest seawater in Heligoland, Germany, are January and February, with an average sea temperature of 4.4°C (39.9°F). Note: In swimming scenarios, this situation is extremely cold, fraught with danger, and poses a significant life risk. Weather in February »
Weather in March
In March, the average sea temperature in Heligoland, Germany, is 4.8°C (40.6°F). Note: In the activity of swimming, this is perceived as lethal and exceedingly dangerous. Weather in March »
Weather in April
In Heligoland, Germany, the average seawater temperature in April is 8°C (46.4°F). Note: Navigating the 8°C (46.4°F) at 13°C (55.4°F) is no joy, and temperatures less than 10°C (50°F) can threaten breathing and cause a chilling shock, gauging personal stamina. Weather in April »
Weather in May
In Heligoland, Germany, in May, the average water temperature is 11.5°C (52.7°F). Note: In 11.5°C (52.7°F), even brief exposure to 13°C (55.4°F) feels biting, and anything less than 10°C (50°F) risks cold shock and impaired breathing, considering one's health. Weather in May »
Weather in June
In Heligoland, Germany, in June, the average water temperature is 15.3°C (59.5°F). Note: Swimming is not enjoyable for most people in water that is 15.3°C (59.5°F). Weather in June »
Weather in July
In Heligoland, Germany, in July, the average water temperature is 17.4°C (63.3°F). Note: When the surface water temperature is 17.4°C (63.3°F), most do not enjoy swimming. Weather in July »
Weather in August
With an average sea temperature of 18.3°C (64.9°F), August is the month with the warmest seawater in Heligoland, Germany. Note: Swimming in water that is 18.3°C (64.9°F) is not enjoyable for most. Weather in August »
Weather in September
In September, the average sea temperature in Heligoland, Germany, is 17.6°C (63.7°F). Note: In water with a temperature of 17.6°C (63.7°F), most people do not enjoy swimming. Weather in September »
Weather in October
In Heligoland, Germany, the average seawater temperature in October is 14.3°C (57.7°F). Note: Immersing oneself in 14.3°C (57.7°F) at sub-10°C (14°F) temperatures is a recipe for harsh cold shock and quickened breathing unless adequately equipped. Weather in October »
Weather in November
In Heligoland, Germany, in November, the average water temperature is 11°C (51.8°F). Note: If planning to swim in 11°C (51.8°F) under 10°C (50°F), wear a protective suit. Weather in November »
Weather in December
In December, the average sea temperature in Heligoland, Germany, is 6.9°C (44.4°F). Note: Unprotected swimming in 6.9°C (44.4°F) is dangerous due to potential cold shock. Weather in December »
Updated: Feb 14, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What months are the sea coldest in Heligoland?
January and February, with an average sea temperature of 4.4°C (39.9°F), are months with the coldest seawater.
When are the longest days in Heligoland?
June has the longest days of the year in Heligoland, with an average of 17h and 6min of daylight.
What is the month with the warmest sea water in Heligoland?
The month with the warmest seawater in Heligoland is August, with an average sea temperature of 18.3°C (64.9°F).
When is Daylight Saving Time (DST) in Heligoland?
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends, and the time zone changes from CEST to CET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 02:00, and the time zone reverts from CET to CEST.
What is the month with the shortest days in Heligoland?
The month with the shortest days in Heligoland, Germany, is December, with an average of 7h and 30min of daylight.
Average sea temperature
Heligoland, Germany
The best month for swimming (with the highest average sea temperature) is August (18.3°C).
The coldest months (with the lowest average sea temperature) are January and February (4.4°C).
Average daylight
Heligoland, Germany
- Average daylight in January:
8h and 0min - Average daylight in February:
9h and 5min - Average daylight in March:
11h and 5min - Average daylight in April:
14h and 1min - Average daylight in May:
16h and 0min - Average daylight in June:
17h and 1min
- Average daylight in July:
16h and 4min - Average daylight in August:
14h and 5min - Average daylight in September:
12h and 4min - Average daylight in October:
10h and 3min - Average daylight in November:
8h and 3min - Average daylight in December:
7h and 3min
The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 30min).
