Weather in May
Sea temperature
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.
Daylight
In May, the average length of the day is 16h and 2min.On the first day of May in Heligoland, sunrise is at 05:49 and sunset at 21:01. On the last day of the month, sunrise is at 05:02 and sunset at 21:50 CEST.
Frequently asked questions
What is the sea water temperature in May in Heligoland?
In May, the average sea temperature in Heligoland, Germany, is 11.5°C (52.7°F). 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. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.
What is the average length of the day in May in Heligoland?
In Heligoland, Germany, the average day length in May is 16h and 2min.
What time are sunrise and sunset in May in Heligoland?
On the first day of May, sunrise is at 05:49 and sunset at 21:01. On the last day of the month, sunrise is at 05:02 and sunset at 21:50 CEST.
Average sea temperature in May
Heligoland, Germany
- Average sea temperature in May: 11.5°C
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 in May
Heligoland, Germany
- Average daylight in May: 16h and 0min
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).
Heligoland, Germany
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