Water temperature in Ostende

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 12.4°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 2012 and was 14.9°C, and the coldest was recorded in 2013 at 10.9°C. Sea water temperature in Ostende is expected to rise to 13.2°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

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 27 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Ostende

Ostende weather forecast

Current temperature and weather

Data in a table show Ostende temperature today (27 September 2025). For more information and forecast for a few days, go to the weather forecast Ostende.

0-3 h	3-6 h	6-9 h	9-12 h
13.3°C	13.3°C	13.1°C	12.7°C

12-15 h	15-18 h	18-21 h	21-24 h
12.8°C	13.5°C	13.7°C	13.1°C

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

Chart monthly average water temperature in Ostende

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

	Water	Weather		Wave
Santa Teresita	13.1°C	14°C		0.91 m
Mar Chiquita	11.9°C	13°C		1.37 m
San Clemente del Tuyu	13.3°C	14°C		1.22 m
Mar del Plata	11.4°C	12°C		1.78 m
Chapadmalal	11.3°C	12°C		1.48 m
Miramar	10.9°C	12°C		1.15 m
Buenos Aires	14.3°C	15°C		1.24 m
Mar del Sur	10.7°C	12°C		1.24 m
Punta Indio	15.1°C	15°C		0.78 m
Arenas Verdes	11.1°C	12°C		1.04 m

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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.