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Water temperature in Ostende

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This data the coastal Ostende 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.

Current sea temperature in Ostende

Water temperature in Ostende today is 11.4°C. Based on our historical data over a period of ten years, the warmest water in this day in the Atlantic Ocean near Ostende was recorded in 2017 and was 12.3°C, and the coldest was recorded in 2020 at 9.7°C. Sea water temperature in Ostende is expected to rise to 11.6°C in the next 10 days. September average water temperature in Ostende is 11.7°C, the minimum temperature is 9.1°C, and the maximum is 16°C.

The swimming season in Ostende lasts from December to March. During those months, Ostende water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Ostende in winter reaches 10.9°C, in spring 14.2°C, in summer the average temperature rises to 20.8°C, and in autumn it is 18.4°C.

Ostende water temperature now


5 September 2025
today temp
11.4°C
4 September 2025
yesterday temp
11.4°C


The sea salinity in Ostende is 27.76‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Ostende for today

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 Ostende. 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 Ostende. 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 h3-6 h6-9 h9-12 h
3' 3"3' 0"2' 9"2' 8"
0.99 m0.91 m0.85 m0.82 m
12-15 h15-18 h18-21 h21-24 h
2' 7"2' 8"2' 10"2' 9"
0.8 m0.82 m0.87 m0.83 m

Surf report in Ostende

Ostende wave height and direction

Ostende weather forecast

Ostende wind speed and direction

Current temperature and weather

Data in a table show Ostende temperature today (6 September 2025). For more information and forecast for a few days, go to the weather forecast Ostende.

0-3 h3-6 h6-9 h9-12 h
4.3°C3.3°C2.1°C4.8°C
12-15 h15-18 h18-21 h21-24 h
9.1°C9.5°C7.8°C5.9°C

You may also be interested in other sections of our site for Ostende: Sunrise and Sunset, Tides

Ostende water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Ostende. 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 Ostende 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

MonthAvrMinMax
January21.3°C18.7°C23.7°Cwarm
Sea water temperature in Ostende in January
February21.8°C19°C25.1°Cwarm
Sea water temperature in Ostende in February
March21°C18.3°C24.7°Cwarm
Sea water temperature in Ostende in March
April18.7°C15.5°C22.5°Ccold
Sea water temperature in Ostende in April
May15.6°C12.2°C19.6°Ccold
Sea water temperature in Ostende in May
June12.4°C9.4°C16.1°Ccold
Sea water temperature in Ostende in June
July10.2°C7.7°C12.8°Ccold
Sea water temperature in Ostende in July
August10.2°C8°C12.7°Ccold
Sea water temperature in Ostende in August
September11.7°C9.1°C16°Ccold
Sea water temperature in Ostende in September
October14.1°C11.1°C18°Ccold
Sea water temperature in Ostende in October
November16.7°C13.9°C19.9°Ccold
Sea water temperature in Ostende in November
December19.3°C16.5°C23°Ccold
Sea water temperature in Ostende in December

Chart monthly average water temperature in Ostende

Water temperature in Ostende

Where is the warmest sea water in the world?

If you want to plan a vacation on the beach and enjoy the warm sea, choose the day of the year, region and the minimum comfortable sea/ocean temperature that interests you. As a result, you will get a list of countries and cities in which the average sea temperature or maximum temperature on this day over the past 10 years exceeds your chosen value

Region
Date (day and month)
Water temperature: min 16°C
 Average temperature  Maximum temperature

Nearby beaches and cities

The nearest beaches and cities from Ostende with the water temperature today, as well as the air temperature and the state of the weather during the day and the average wave height for today

WaterWeatherWave
Santa Teresita11.6°C10°C0.38 m
Mar Chiquita11.2°C10°C1.23 m
San Clemente del Tuyu12°C10°C0.45 m
Mar del Plata10.7°C10°C1.64 m
Chapadmalal10.9°C9°C1.41 m
Miramar10.8°C9°C1.3 m
Buenos Aires12.8°C11°C0.68 m
Mar del Sur10.7°C9°C1.62 m
Punta Indio13°C11°C0.16 m
Arenas Verdes10.6°C10°C1.65 m

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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Ostende is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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