Western Australia Surf Forecast by Craig Brokensha (issued Wednesday 27th May)

Best Days: Thursday, Friday, Saturday and Sunday at exposed breaks, most of next week besides Monday

Recap

A mix of swells to 2ft on the sets around Perth and Mandurah yesterday with generally light winds, while Margs was in the 4-5ft range with improving conditions as onshore SW winds tending more S/SE into the afternoon.

Today a new SW swell from a weak low sitting to our south-west produced a better swell to 4-6ft this morning in the South West with 2ft sets continuing further north. Winds were favourable around Perth and Mandurah but far from ideal around Margs with a dawn SE tending S'ly breeze, and then onshore wind mid-late morning.

This week and weekend (May 28 - 31)

All attention shifts to tomorrow, with a large, powerful and long-period S/SW groundswell due to fill in strongly across the state, peaking through the middle of the day in the South West to 10-12ft at exposed breaks with bigger sets at offshore reefs.

Perth should build to 3ft on the sets into the afternoon, with Gero kicking late to 5-6ft.

A drop in size is then due through Friday from 6-8ft+ at exposed breaks in the South West, 2-3ft in Perth and 5-6ft around Gero.

Come Saturday the swell will be back to the small to moderate range, easing off further Sunday.

Conditions aren't looking the best around Margs tomorrow with a S/SE breeze due all day, favouring protected locations. Perth and Margs look better with offshore E/SE tending SE winds.

Come Friday though, Margs will be pumping with offshore E'ly winds that will more than likely tend variable into the afternoon. Saturday and Sunday are expected to play out similarly with morning offshore winds and light variable breezes into the afternoons.

Next week onwards (Jun 1 onwards)

Next week will start out slow with no real decent swell and dicey winds Monday, improving through Tuesday.

A new long-range but good W/SW groundswell is due through the middle of the week though, generated by a really strong and unfavourably tracking polar low south-east of South Africa during tomorrow and Friday.

This should produce an inconsistent swell to an inconsistent 5-6ft across the South West Tuesday afternoon with 1-2ft sets in Perth and 3-5ft up at Gero, with a more consistent pulse Wednesday. This should be produced by a better aligned and weaker frontal system racing towards us over the weekend.

This should looks to be more in the 6ft+ range into Wednesday afternoon around Margs, 2ft in Perth and 4-5ft up at Gero.

Beyond this a series of larger groundswells are on the cards for the end of the week and into the following weekend, associated with a strong node of the Long Wave Trough moving in through the southern Indian Ocean, but more on this Friday.