Simpsons Reef Water Temperature and Wetsuit Guide

Very cold water temperature (9 °C / 49 °F) at Simpsons Reef. Despite the sunshine, even with a thick winter wetsuit, neoprene hood, gloves and boots it will be difficult to stay comfortable in the sea for long today.

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 Simpsons Reef. 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.

Simpsons Reef water temperatures peak in the range 12 to 18°C (54 to 64°F) on around the 22nd of August and are at their coldest on about the 11th of February, in the range 8 to 12°C (46 to 54°F). The warmest water temperatures at Simpsons Reef in the second half of August are ideally suited to a 4/3mm wetsuit + 3mm boots, although a 5/3mm wetsuit may be preferable for longer sessions and cold windy days. At its coldest in the second week of February, low water temperatures at Simpsons Reef are suited to a 5/4mm or 5/3mm good quality wetsuit with neoprene gloves and 3mm boots. You will need a hood if it's windy or the air is cold.

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

Latest surface water temperature for the entire globe. Click the image to view a larger version.