Western Australia Surf Forecast by Craig Brokensha (issued Monday 25th December)

Best Days: Perth and Mandurah Wednesday morning, all spots Thursday and Friday mornings, Saturday morning across the South West

Recap

Merry Christmas from the Swellnet team! Small fading surf with good conditions across the South West but no size (tiny to flat to the north). This morning it's even smaller though clean.

Today’s Forecaster Notes are brought to you by Rip Curl

This week and weekend (Dec 26 - 31)

Tomorrow is still a lay day with onshore winds and tiny surf.

Later in the day a new long-period and very inconsistent W/SW groundswell should be seen, generated by a very strong but distant low south of South Africa last week.

This will be accompanied with some more consistent W/SW groundswell generated by the remnants of the storm pushing east through our swell window while slowly weakening. The system is currently west-southwest of us and due to weaken further today and tomorrow.

We should see a good sized W/SW swell from these sources, peaking Wednesday to a solid 5-6ft across the South West, 2ft in Mandurah and 1-2ft up in Perth.

Unfortunately a secondary front projecting towards us will bring onshore winds to the South West Wednesday morning from the SW, better early and from the S/SE around Mandurah and Perth.

This secondary front will bring some reinforcing mid-period SW swell though for Thursday coming in around a similar size to Wednesday's swell. That being 5-6ft in the South West, 2ft Mandurah and 1-2ft Perth.

Conditions will improve across the South West as a ridge of high pressure moves in from the west, creating morning S/SE winds, tending S/SW into the afternoon.

The swell will ease through Friday as S/SE winds persist, while a third front developing in our southern swell window should produce a fun S/SW groundswell for Saturday as winds swing offshore from the E/SE.

We should see 4-5ft waves across the South West, tiny and to 1-1.5ft around Mandurah, 1ft in Perth.

Beyond this there's nothing too significant, but more on this Wednesday.