Today's Treachery Head sea temperature is 18.4 °C
(Normal for this time of year (within 0.4° of average))
| Mean: | 18.8 °C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Range: | 17.4 °C to 20.2 °C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Statistics for 10 Aug (1981–2005) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Today, many surfers would wear a spring wetsuit.
The Treachery Head water temperature is reasonably warm (18 °C) but the air temperature will feel a few degrees cooler (14 °C). A good quality spring wetsuit would be ideal.
 Map of current Australia Surface Water Temperatures (based on measurements from oceanographic satellites) |  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 Treachery Head. 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.
Treachery Head sea temperatures peak in the range 23 to 26°C (73 to 79°F) on around the 6th of February and are at their coldest on about the 16th of August, in the range 17 to 20°C (63 to 68°F). Treachery Head sea temperatures are always warm reach their warmest in the first week of February. You'll need a 2mm neoprene top or a shorty at dawn/dusk or if it's windy. The coldest Treachery Head sea temperatures in the middle of August require something like a 3/2mm fully sealed wetsuit.
Actual sea surface water temperatures close to shore at Treachery Head 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 Treachery Head. Refer to our detailed weather forecasts for this information.
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