Nahant Beach Surf Break

Lat Long: 42.42° N 70.90° W

Nahant Beach Sea Temperature and Wetsuit Guide

Issued: 7 am 19 Sep 2026 (local time)

Forecast update in  hr  min

Today's Nahant Beach sea temperature is
17.7°C
0.2° 

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

Today's Nahant Beach sea temperature is 17.7 °C

(Normal for this time of year (within 0.2° of average))

Mean: 17.5 °C
Range: 14.5 °C to 18.8 °C
Statistics for 19 Sep (1981–2005)

    Today, many surfers would wear a summer wetsuit.

    The water temperature (17 °C) at Nahant Beach is relatively warm. If the sun does come out as forecast, it should feel warm enough to surf in a summer wetsuit. Effective air temperature of 13 °C.

    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 Nahant 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.

    Nahant 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.

    Nahant Beach sea water temperatures peak in the range 19 to 22°C (66 to 72°F) on around the 9th of August and are at their minimum on about the 23rd of February, in the range 2 to 5°C (36 to 41°F). Nahant Beach sea water temperatures are maximum in early to mid August. Surfers should use a 2mm long sleeve shorty or a 3/2mm spring wetsuit if the wind is up. The minimum sea water temperatures at Nahant 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 in the fourth week of February.

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

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