Western Australia Surf Forecast by Craig Brokensha (issued Monday 7th September)

Best Days: Perth and Mandurah tomorrow morning, all spots Wednesday mornin, Friday, Saturday

Recap

Onshore, sloppy 6-8ft waves across the South West Saturday, stormy and very large yesterday with stronger onshore winds. Mandurah was OK and a bumpy 2-3ft early Saturday, cleaner and to 2ft around Perth before onshore winds kicked in, choppy and bigger yesterday.

Today conditions are still large and choppy across all locations with no quality to be found.

This week and weekend (Sep 8 - 13)

The large run of onshore surf seen the last two days should start to back off tomorrow and conditions will remain poor for the South West but should improve to the north with early light NE winds, shifting NW into the afternoon.

Margs will remain onshore from the NW all day with easing 10-12ft sets on the magnets, 3-4ft in Mandurah and 3ft across Perth.

Wednesday finally looks cleaner in the South West with a E/NE-NE offshore and smaller to 6ft+ or so, 2ft to maybe 3ft in Mandurah and 2ft across Perth.

We then look onto the follow up pulses of large, long-period W/SW groundswell which are lining up through our west and south-western swell windows.

A progression of mid-latitude storms is paving the way for the strongest of the fetches of severe-gale W/SW winds to move over today and tomorrow morning, with even chances for storm-force embedded winds.

This should generate a significant long-period W/SW groundswell for Friday, while ahead of this we'll see mid-period energy from the weaker front just ahead of it.

Building sets to 8ft+ are due through Thursday ahead of the groundswell Friday to 10-12ft+ across the South West, 4ft in Mandurah and 3ft+ across Perth.

Winds Thursday will still be strong out of the W/SW though easing with Friday looking much better under variable tending light offshore E winds.

Saturday is a little unsure at the moment for the South West but variable winds could be on the cards again, cleaner to the north as the swell eases.

Longer term there's a bit of SW energy on the cards for later in the weekend but more so the following week with favourable winds, but we'll have a closer look at this on Wednesday.