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Coastguard Beach water temperature
Coastguard Beach ratings
Quality on a good day: 4.0
Consistency of Surf: 3.5
Difficulty Level: 2.3
Wind and Kite Surfing: 3.6
Crowds: 3.5

Overall: 3.6

See all 18 ratings

Based on 6 votes. Vote


Surf Report Feed

Coastguard Beach Water Temperature and Wetsuit Guide

(Massachusetts, USA)

Today's Coastguard Beach sea temperature is 17.5 °C.

Statistics for 17 Sep (1981–2005) – mean: 18.0 °C, range: 15.6 °C to 19.8 °C

The water temperature (17 °C) at Coastguard 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 15 °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 Coastguard 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.

Coastguard 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.

Coastguard Beach sea water temperatures peak in the range 19 to 22°C (66 to 72°F) on around the 10th of August and are at their minimum on about the 28th of February, in the range 3 to 5°C (37 to 41°F). Coastguard Beach sea water temperatures are highest 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 Coastguard 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 Coastguard 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 Coastguard Beach. Refer to our detailed weather forecasts for this information.