Dias Beach Surf Break

Dias Beach Sea Temperature and Wetsuit Guide

Lat Long: 34.35° S 18.49° E

Issued: 7 am 21 Jun 2026 (local time)

Forecast update in  hr  min

Today's Dias Beach sea temperature is
15.3° C

Slightly cooler than normal

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

Today's Dias Beach sea temperature is 15.3 °C

(Slightly cooler than normal)

Mean: 16.2 °C
Range: 14.9 °C to 17.7 °C
Statistics for 21 Jun (1981–2005)

    Today, many surfers would wear a spring wetsuit.

    Sunny with pleasantly warm air temperatures (feels like 21 °C) at Dias Beach, 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.

    South Africa Sea Water Temperature

    Map of current South Africa
    Surface Water Temperatures

    (based on measurements from oceanographic satellites)
    South Africa Water Temperature Anomaly

    Map of current South Africa
    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 Dias Beach. 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.

    Dias Beach 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.

    Dias Beach sea temperatures peak in the range 19 to 23°C (66 to 73°F) on around the 3rd of February and are at their minimum on about the 16th of July, in the range 14 to 16°C (57 to 61°F). Dias Beach sea temperatures are warmest at the start of February. Surfers should use a 2mm long sleeve shorty or a 3/2mm spring wetsuit if the wind is up. The minimum seasonal sea temperatures at Dias Beach in the middle of July lend themselves to a 4/3mm wetsuit or a 3/2mm suit and 3mm neoprene boots.

    Actual sea surface water temperatures close to shore at Dias Beach 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 Dias Beach. Refer to our detailed weather forecasts for this information.

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