This data the coastal East Frisian Islands sea water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.
Water temperature in East Frisian Islands today is 18.3°C. Based on our historical data over a period of ten years, the warmest water in this day in the North Sea near East Frisian Islands was recorded in 2024 and was 19.9°C, and the coldest was recorded in 2015 at 17.3°C. Sea water temperature in East Frisian Islands is expected to drop to 17.1°C in the next 10 days. September average water temperature in East Frisian Islands is 17.1°C, the minimum temperature is 14.5°C, and the maximum is 21.2°C.
The swimming season in East Frisian Islands lasts only one month - August. During this month, East Frisian Islands water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in East Frisian Islands in winter reaches 5°C, in spring 8.3°C, in summer the average temperature rises to 17.5°C, and in autumn it is 13.4°C.
6 September 2025 |
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today temp |
18.3°C |
5 September 2025 |
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yesterday temp |
18.1°C |
The sea salinity in East Frisian Islands is 30.07‰, and the average salinity of the World Ocean is 35‰.
Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for East Frisian Islands. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast East Frisian Islands. Data in table shown for 6 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)
0-3 h | 3-6 h | 6-9 h | 9-12 h |
---|---|---|---|
1' 9" | 1' 8" | 1' 7" | 1' 5" |
0.54 m | 0.51 m | 0.47 m | 0.43 m |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
1' 3" | 1' 3" | 1' 3" | 1' 4" |
0.38 m | 0.37 m | 0.39 m | 0.4 m |
Data in a table show East Frisian Islands temperature today (6 September 2025). For more information and forecast for a few days, go to the weather forecast East Frisian Islands.
0-3 h | 3-6 h | 6-9 h | 9-12 h |
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![]() | ![]() | ![]() | ![]() |
15.8°C | 15.3°C | 14.2°C | 15.8°C |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
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18°C | 18.6°C | 18.3°C | 16.3°C |
You may also be interested in other sections of our site for East Frisian Islands: Sunrise and Sunset, Tides
These figures shows the average, minimum and maximum monthly sea temperature in East Frisian Islands. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in East Frisian Islands on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve