Western Australia Surf Forecast by Craig Brokensha (issued Wednesday 3rd June)

Best Days: Tomorrow, Friday, early Saturday, possibly Tuesday and Wednesday mornings next week

Recap

Really fun waves across all locations most of yesterday with clean and easing surf from 4-5ft across the South West, 2ft in Mandurah and Perth.

Today we've got similar great conditions with a mix of building SW groundswell and less consistent W/SW groundswell. We should see the South West reaching 5-6ft, as Perth and Mandurah hold a similar size to this morning as winds shift more NE.

This week and weekend (Jun 4 – 7)

Today's mix of building swells are expected to ease tomorrow from a similar size to this afternoon, that being 5-6ft across the South West, 2ft+ in Mandurah and 2ft on the sets across Perth with straight offshore winds in the morning, shifting S/SE into the afternoon around Margs, likely S/SW further north.

We then look at the new W/SW groundswell for Friday and there's no change to the expected size or timing. The swell should build slowly all day and peak to 5-6ft across the South West again into the afternoon, 2ft+ in Mandurah and 2ft across Perth on the sets.

The source being a distant but then weakening mid-latitude frontal progression as it pushed east towards us on the weekend and earlier this week. This swell should be a touch more consistent than today's building W/SW swell and conditions look great with moderate to fresh E'ly tending variable winds.

The swell will ease slowly through the weekend and with good conditions early (moderate to fresh E/NE in Margs, less favourable NE in Mandurah and Perth). The afternoon will be average as winds shift more N/NE in the South West ahead of a late W/NW change, N/NW further north by early afternoon.

Conditions for Sunday are a little suss but the swell will be tiny in Perth and Mandurah, small across the South West and to 3-4ft max.

A low point in swell is due Monday, and our new inconsistent W/SW groundswell for mid-week is looking a little smaller and not as strong. We've still got the unfavourable N'ly winds as well owing to a series of strengthening mid-latitude storms moving in from the west.

But coming back to the swell and the distant frontal progression forming south-east of South Africa -  linked to it - and it now only looks to produce a broad but relatively weak fetch of strong to gale-force W/SW winds through our distant swell window tomorrow and Friday before breaking down. Just ahead of this a stronger but tighter low is generating severe-gales.

As a result a mix of inconsistent long-period and mid-period swells are due with a possible increase in size Monday but more so Tuesday, holding Wednesday. Size wise the South West looks to only reach an inconsistent 5-6ft, 2ft in Mandurah and Perth with variable tending NW winds. More on this and the following run of windy/stormy surf Friday though.