Water temperature in Arminza

This data the coastal Arminza 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 Arminza

Water temperature in Arminza today is 20.7°C. Based on our historical data over a period of ten years, the warmest water in this day in the Cantabrian Sea near Arminza was recorded in 2011 and was 20.8°C, and the coldest was recorded in 2015 at 19.1°C. Sea water temperature in Arminza is expected to drop to 19.3°C in the next 10 days. September average water temperature in Arminza is 20.7°C, the minimum temperature is 18.5°C, and the maximum is 22.7°C.

The swimming season in Arminza lasts from July to September. During those months, Arminza water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Arminza in winter reaches 13.2°C, in spring 13.8°C, in summer the average temperature rises to 20.5°C, and in autumn it is 18.4°C.

Arminza water temperature now

The sea salinity in Arminza is 34.85‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Arminza 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 Arminza. 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 Arminza. Data in table shown for 25 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Arminza

Arminza weather forecast

Current temperature and weather

Data in a table show Arminza temperature today (25 September 2025). For more information and forecast for a few days, go to the weather forecast Arminza.

0-3 h	3-6 h	6-9 h	9-12 h
11.6°C	10.9°C	11.5°C	14.1°C

12-15 h	15-18 h	18-21 h	21-24 h
17.8°C	17.3°C	15.6°C	12.9°C

Arminza water temperature by month

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

The nearest beaches and cities from Arminza 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
Biscay	20.8°C	19°C		0.45 m
Bilbao	20.4°C	17°C		0.47 m
Sopelana	20.4°C	17°C		0.47 m
Barrika	20.4°C	17°C		0.47 m
Bermeo	20.6°C	19°C		0.56 m
Mundaka	20.6°C	19°C		0.56 m
Elantxobe	20.6°C	19°C		0.56 m
Sukarrieta	20.6°C	19°C		0.56 m
Getxo	20.2°C	17°C		0.44 m
Portugalete	20.2°C	17°C		0.44 m

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Our report for Arminza 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.