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Cat Bay water temperature
Cat Bay ratings
Quality on a good day: 4.1
Consistency of Surf: 3.9
Difficulty Level: 1.7
Wind and Kite Surfing: 2.5
Crowds: 3.2

Overall: 3.8

See all 18 ratings

Based on 7 votes. Vote


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Cat Bay Water Temperature and Wetsuit Guide

(Phillip Island, Australia)

Today's Cat Bay sea temperature is 12.8 °C.

Statistics for 25 Sep (1981–2005) – mean: 12.8 °C, range: 11.7 °C to 13.6 °C

The water temperature (12 °C) at Cat Bay is quite cold. Despite the sun, windchill of 9 °C means that surfers will need plenty of neoprene. Wear a quality winter wetsuit, a neoprene hood, gloves and boots. A windchill factor of (9 °C).

Australia Sea Water Temperature

Map of current Australia
Surface Water Temperatures
based on measurements from oceanographic satellites
Australia Water Temperature Anomaly

Map of current Australia
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 Cat Bay. 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.

Cat Bay 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.

Cat Bay sea water temperatures peak in the range 17 to 20°C (63 to 68°F) on around the 28th of February and are at their lowest on about the 16th of August, in the range 12 to 13°C (54 to 55°F). The maximum Cat Bay sea water temperatures in the fourth week of February require something like a 3/2mm fully sealed wetsuit. The lowest sea water temperatures at Cat Bay in the middle 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.

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