Water temperature in Lisbon

This data the coastal Lisbon 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 Lisbon

Water temperature in Lisbon today is 18.6°C. Based on our historical data over a period of ten years, the warmest water in this day in the Atlantic Ocean near Lisbon was recorded in 2016 and was 19.8°C, and the coldest was recorded in 2024 at 15.4°C. Sea water temperature in Lisbon is expected to rise to 18.7°C in the next 10 days. September average water temperature in Lisbon is 18.5°C, the minimum temperature is 14.8°C, and the maximum is 20.9°C.

Throughout the year, the water temperature in Lisbon does not rise above 20°C and therefore is not suitable for comfortable swimming. But on some days of August, the water temperature warms up to 20°C and above. The average water temperature in Lisbon in winter reaches 15°C, in spring 15.5°C, in summer the average temperature rises to 17.9°C, and in autumn it is 17.8°C.

Lisbon water temperature now

The sea salinity in Lisbon is 35.58‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Lisbon 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 Lisbon. 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 Lisbon. 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)

Surf report in Lisbon

Lisbon weather forecast

Current temperature and weather

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

0-3 h	3-6 h	6-9 h	9-12 h
18.9°C	18.2°C	17.9°C	21.2°C

12-15 h	15-18 h	18-21 h	21-24 h
25°C	25.1°C	21.6°C	18.6°C

Lisbon water temperature by month

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

The nearest beaches and cities from Lisbon 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
Costa da Caparica	18.7°C	28°C		1.22 m
Trafaria	18.7°C	28°C		1.22 m
Santo Amaro	18.7°C	28°C		1.22 m
Carcavelos	18.7°C	25°C		1.16 m
Parede	18.7°C	25°C		1.16 m
Estoril	18.4°C	25°C		1.16 m
Cascais	18.3°C	23°C		1.5 m
Paco de Arcos	19°C	25°C		1.16 m
Alges	19.5°C	28°C		0.84 m
Amadora	19.5°C	28°C		0.84 m

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Lisboa, Lisbona, Lizbon

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Our report for Lisbon 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.