Praia do Castello Surf Break

Praia do Castello Sea Temperature and Wetsuit Guide

Lat Long: 38.63° N 9.23° W

Issued: 12 pm 09 Jun 2026 (local time)

Forecast update in  hr  min

Today's Praia do Castello sea temperature is
19.1° C

Slightly warmer than usual

Praia do Castello surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Praia do Castello sea temperature is 19.1 °C

(Slightly warmer than usual)

Mean: 18.3 °C
Range: 16.7 °C to 19.3 °C
Statistics for 09 Jun (1981–2005)

    Today, many surfers would wear a spring wetsuit.

    Sunny with pleasantly warm air temperatures (feeling like 21 °C once we account for wind), yet at 19 °C the sea remains several degrees colder than the air at Praia do Castello. The majority of surfers will need a spring wetsuit though a summer suit or even a shorty may suffice for a short session.

    Portugal Sea Water Temperature

    Map of current Portugal
    Surface Water Temperatures

    (based on measurements from oceanographic satellites)
    Portugal Water Temperature Anomaly

    Map of current Portugal
    Sea Water Temperature Anomalies

    (compared with long term averages
    at this time of year)

    click thumbnails to expand

    Below is a graph of Historical Sea Surface Temperature for Praia do Castello. This has been derived from analysis of two decades of oceanographic satellite measurements of nearby open water. We have calculated the average water temperature variation around the year as well as the extremes that have been observed on each date.

    Praia do Castello Water Temperature Graph

    All of the graphs for the surf breaks presented on Surf-Forecast.com are on the same scale to enable comparison between locations around the world.

    Praia do Castello sea temperatures peak in the range 20 to 22°C (68 to 72°F) on around the 16th of August and are at their lowest on about the 24th of February, in the range 14 to 16°C (57 to 61°F). Praia do Castello sea temperatures are highest in the middle of August. Surfers should use a 2mm long sleeve shorty or a 3/2mm spring wetsuit if the wind is up. The lowest sea temperatures at Praia do Castello in the fourth week of February are ideally suited to a 4/3mm wetsuit + 3mm boots, although a 5/3mm wetsuit may be preferable for longer sessions and cold windy days.

    Actual sea surface water temperatures close to shore at Praia do Castello can vary by several degrees compared with these open water averages. This is especially true after heavy rain, close to river mouths or after long periods of strong offshore winds. Offshore winds cause colder deep water to replace surface water that has been warmed by the sun. Air temperature, wind-chill and sunshine should also be considered before deciding on the kind of wetsuit needed to stay warm when surfing at Praia do Castello. Refer to our detailed weather forecasts for this information.

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