This data the coastal Mosterhamn 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 Mosterhamn today is 15.8°C. Based on our historical data over a period of ten years, the warmest water in this day in the North Sea near Mosterhamn was recorded in 2024 and was 17°C, and the coldest was recorded in 2007 at 13.5°C. Sea water temperature in Mosterhamn is expected to drop to 14.3°C in the next 10 days. September average water temperature in Mosterhamn is 14.5°C, the minimum temperature is 11.7°C, and the maximum is 17.4°C.
Throughout the year, the water temperature in Mosterhamn does not rise above 20°C and therefore is not suitable for comfortable swimming. But on some days of July, the water temperature warms up to 20°C and above. The average water temperature in Mosterhamn in winter reaches 6.2°C, in spring 6.8°C, in summer the average temperature rises to 14.7°C, and in autumn it is 12°C.
8 September 2025 |
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today temp |
15.8°C |
7 September 2025 |
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yesterday temp |
15.8°C |
The sea salinity in Mosterhamn is 31.31‰, 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 Mosterhamn. 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 Mosterhamn. Data in table shown for 8 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 |
---|---|---|---|
0' 7" | 0' 8" | 0' 11" | 1' 1" |
0.18 m | 0.2 m | 0.27 m | 0.34 m |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
1' 2" | 0' 10" | 0' 8" | 0' 10" |
0.35 m | 0.26 m | 0.21 m | 0.25 m |
Data in a table show Mosterhamn temperature today (8 September 2025). For more information and forecast for a few days, go to the weather forecast Mosterhamn.
0-3 h | 3-6 h | 6-9 h | 9-12 h |
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15.3°C | 14.8°C | 15°C | 17°C |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
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19.3°C | 20.1°C | 18.5°C | 17.3°C |
You may also be interested in other sections of our site for Mosterhamn: Sunrise and Sunset, Tides
These figures shows the average, minimum and maximum monthly sea temperature in Mosterhamn. 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 Mosterhamn 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
Month | Avr | Min | Max | |
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January | 5.9°C | 2.4°C | 8.3°C | cold |
Sea water temperature in Mosterhamn in January | ||||
February | 5.2°C | 2.1°C | 7.2°C | cold |
Sea water temperature in Mosterhamn in February | ||||
March | 4.7°C | 2.2°C | 7.1°C | cold |
Sea water temperature in Mosterhamn in March | ||||
April | 6.3°C | 3.4°C | 9.6°C | cold |
Sea water temperature in Mosterhamn in April | ||||
May | 9.3°C | 5.8°C | 16.3°C | cold |
Sea water temperature in Mosterhamn in May | ||||
June | 12.7°C | 8.9°C | 19°C | cold |
Sea water temperature in Mosterhamn in June | ||||
July | 15.3°C | 11.4°C | 20.6°C | cold |
Sea water temperature in Mosterhamn in July | ||||
August | 16.1°C | 13°C | 19.6°C | cold |
Sea water temperature in Mosterhamn in August | ||||
September | 14.5°C | 11.7°C | 17.4°C | cold |
Sea water temperature in Mosterhamn in September | ||||
October | 11.9°C | 9.6°C | 14.7°C | cold |
Sea water temperature in Mosterhamn in October | ||||
November | 9.6°C | 6.1°C | 11.7°C | cold |
Sea water temperature in Mosterhamn in November | ||||
December | 7.5°C | 4.7°C | 9.8°C | cold |
Sea water temperature in Mosterhamn in December |