Surf Break

Lat Long: 40.63° N 8.75° W

Costa Nova Sea Temperature and Wetsuit Guide

Issued: 12 pm 24 Sep 2026 (local time)

Forecast update in  hr  min

Today's Costa Nova sea temperature is
16.7°C
2.2° 

Costa Nova surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Costa Nova sea temperature is 16.7 °C

(2.2° colder than average for this time of year)

Mean: 18.9 °C
Range: 17.2 °C to 20.6 °C
Statistics for 24 Sep (1981–2005)

    Today, many surfers would wear a spring wetsuit.

    Sunny with pleasantly warm air temperatures (feels like 21 °C) at Costa Nova, yet the sea remains several degrees colder than the air. Most 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 Costa Nova. 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.

    Costa Nova 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.

    Costa Nova water temperatures peak in the range 18 to 21°C (64 to 70°F) on around the 20th of August and are at their lowest on about the 2nd of March, in the range 13 to 15°C (55 to 59°F). The maximum Costa Nova water temperatures in mid to late August require something like a 3/2mm fully sealed wetsuit. The lowest water temperatures at Costa Nova in early March 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 Costa Nova 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 Costa Nova. Refer to our detailed weather forecasts for this information.

    Nearest locationNearest