Water temperature in Penestin

This data the coastal Penestin 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 Penestin

Water temperature in Penestin today is 17.3°C. Based on our historical data over a period of ten years, the warmest water in this day in the Bay of Biscay near Penestin was recorded in 2023 and was 19°C, and the coldest was recorded in 2013 at 16.1°C. Sea water temperature in Penestin is expected to drop to 16.5°C in the next 10 days. September average water temperature in Penestin is 17.9°C, the minimum temperature is 15.5°C, and the maximum is 21.5°C.

The swimming season in Penestin lasts from July to August. During those months, Penestin water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Penestin in winter reaches 9.4°C, in spring 12.1°C, in summer the average temperature rises to 18.5°C, and in autumn it is 15.6°C.

Penestin water temperature now

The sea salinity in Penestin is 29.42‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Penestin 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 Penestin. 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 Penestin. Data in table shown for 26 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Penestin

Penestin weather forecast

Current temperature and weather

Data in a table show Penestin temperature today (26 September 2025). For more information and forecast for a few days, go to the weather forecast Penestin.

0-3 h	3-6 h	6-9 h	9-12 h
10.6°C	9°C	8.6°C	12.7°C

12-15 h	15-18 h	18-21 h	21-24 h
16.7°C	18.6°C	16.7°C	14.3°C

Penestin water temperature by month

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

The nearest beaches and cities from Penestin 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
Betahon	17.3°C	19°C		0.17 m
Penn Lann	17.3°C	19°C		0.17 m
Kervoyal	17.3°C	19°C		0.17 m
Quimiac	17.4°C	19°C		0.17 m
Mesquer	17.4°C	19°C		0.17 m
Piriac Sur Mer	17.4°C	19°C		0.22 m
Penvins	17.5°C	19°C		0.27 m
Landrezac	17.5°C	19°C		0.27 m
Sarzeau	17.5°C	19°C		0.27 m
Vannes	17.3°C	18°C		0.25 m

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Our report for Penestin 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.