Marshfield Jetty Water Temperature and Wetsuit Guide

The water temperature (15 °C) at Marshfield Jetty is quite cool. You will need a quality spring wetsuit, and maybe neoprene hood because it will be cloudy with an effective air temperature of just (5 °C). Gloves are a good idea, neoprene boots optional.

Map of current United States Surface Water Temperatures based on measurements from oceanographic satellites

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 Marshfield Jetty. 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.

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.

Marshfield Jetty sea temperatures peak in the range 19 to 22°C (66 to 72°F) on around the 8th of August and are at their lowest on about the 26th of February, in the range 2 to 5°C (36 to 41°F). Marshfield Jetty sea 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 lowest sea temperatures at Marshfield Jetty 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 Marshfield Jetty 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 Marshfield Jetty. Refer to our detailed weather forecasts for this information.