Western Australia Surf Forecast by Craig Brokensha (issued Wednesday June 14th)

Best Days: Saturday, Sunday

Features of the Forecast (tl;dr)

• XL building SW groundswell and windswell tomorrow with strong W winds
• XL S/SW swell Fri, easing later with strong W/SW winds, tending SW and easing a touch later
• Easing S/SW swell Sat with light-mod S-S/SE winds in the South West, tending variable into the PM (E/SE tending variable to the north)
• Smaller Sun with E/NE tending variable winds

Recap

Perth and Mandurah offered lighter winds yesterday morning and surf in the 2ft range, deteriorating into the afternoon as winds strengthened.

This morning we've got a little more size thanks to a localised windswell with early light winds in Perth and Mandurah, though lumpy conditions, poor and onshore in the South West again. Winds are now shifting back onshore across the metro locations and will strengthen later.

This week and weekend (Jun 15 - 18)

Looking at the end of the week, and a broad, Southern Ocean gyre that's developed to the south-southwest of the state will project various fetches of gales up through our swell window.

We've already seen an initial fetch of W/SW gales through our south-western swell window, but a more significant fetch of W/SW-SW gales will be generated through our southern swell window this evening and tomorrow, producing an XL S/SW groundswell for Friday, peaking into the afternoon.

Through tomorrow we'll see the SW groundswell energy building but with strong W winds, leaving nowhere to hide while also bringing some additional windswell to the mix in Perth and Mandurah.

Winds will hold strong from the W/SW on Friday morning, though shifting SW through the afternoon and easing a touch as the gyre starts moving east.

The South West looks to build to 15ft later tomorrow, holding that size on Friday morning, then easing into the afternoon. Mandurah looks to reach a stormy 4-5ft with 3-4ft waves in Perth Friday, then easing through the day.

Saturday will see improving conditions across all locations as a high edges in behind the frontal activity, bringing lighter S-S/SE winds across the South West, E/SE to the north along with easing sets from 10ft on the magnets in the South West, 3ft Mandurah and 2-3ft in Perth.

Sunday will be smaller again but nice and clean across all locations with a light offshore wind ahead of weak sea breezes.

Following this it looks like we'll enter a short period of small surf but with onshore winds kicking in across the South West again thanks to weak frontal activity pushing in.

More on this Friday.