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Derrs water temperature
Derrs ratings
Quality on a good day: 2.0
Consistency of Surf: 4.0
Difficulty Level: 1.0
Crowds: 3.0

Overall: 2.8

See all 18 ratings

Based on 1 vote. Vote


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Derrs Water Temperature and Wetsuit Guide

(Perth City Coast, Australia)

Today's Derrs sea temperature is 21.1 °C.

Statistics for 13 Dec (1981–2005) – mean: 20.4 °C, range: 19.2 °C to 21.6 °C

Sunny with pleasantly warm air temperatures (feeling like 20 °C once we account for wind), and similar sea temperatures (21 °C). Wear boardshorts or a shorty, or better still a thin summer wetsuit to keep the UV off.

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 Derrs. 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.

Derrs 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.

Derrs sea temperatures peak in the range 22 to 24°C (72 to 75°F) on around the 1st of March and are at their coldest on about the 9th of September, in the range 17 to 20°C (63 to 68°F). Derrs sea temperatures are always warm reach their highest at the beginning of March. You'll need a 2mm neoprene top or a shorty at dawn/dusk or if it's windy. The coldest Derrs sea temperatures in early to mid September require something like a 3/2mm fully sealed wetsuit.

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