Diamond Beach Surf Break

Diamond Beach Sea Temperature and Wetsuit Guide

Lat Long: 38.96° N 74.85° W

Issued: 1 pm 19 Jun 2026 (local time)

Forecast update in  hr  min

Today's Diamond Beach sea temperature is
19.5° C

Slightly warmer than usual

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

Today's Diamond Beach sea temperature is 19.5 °C

(Slightly warmer than usual)

Mean: 18.9 °C
Range: 16.3 °C to 22.0 °C
Statistics for 19 Jun (1981–2005)

    Today, many surfers would wear a spring wetsuit.

    Sunny with very warm air temperatures, feeling like 25 °C once we account for air movement. In contrast the sea remains relatively cold (19 °C). Surfers should wear a spring or summer wetsuit though no doubt some would wear less neoprene on such a warm day, no matter what temperature the sea is.

    United States Sea Water Temperature

    Map of current United States
    Surface Water Temperatures

    (based on measurements from oceanographic satellites)
    United States Water Temperature Anomaly

    Map of current United States
    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 Diamond 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.

    Diamond 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.

    Diamond Beach sea temperatures peak in the range 22 to 25°C (72 to 77°F) on around the 9th of August and are at their lowest on about the 1st of March, in the range 1 to 5°C (34 to 41°F). Diamond Beach sea temperatures are always warm reach their maximum in early to mid August. You'll need a 2mm neoprene top or a shorty at dawn/dusk or if it's windy. The lowest sea temperatures at Diamond Beach mean that you will need a flexible 6/5/4mm wetsuit or a well fitting 5/4mm wetsuit with gloves and 5mm neoprene booties and a hood to surf here at the beginning of March.

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

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