Western Australia Surf Forecast by Craig Brokensha (issued Wednesday 4th October)

Best Days: Swell magnets across the South West Thursday, and dawn Friday, Monday morning

Recap

Not the best conditions yesterday with a bit more swell across the coast but with freshening S/SE winds (stronger across the South West).

Today was the day to hit Margs with excellent conditions and sets in the 5ft range while Mandurah was a good 2ft+, with 1-2ft waves around Perth. The swell should ease a little through the day as winds swing more SE-S/SE.

This week and weekend (Oct 5 - 8)

Tomorrow will be great across swell magnets as the surf continues to ease with offshore E tending E/NE winds, variable into the afternoon. Margs should see 3-4ft surf, with 1-1.5ft waves around Mandurah and Perth.

Into Friday morning our small bump in SW swell is still on the cards along with an early variable wind. This swell is being generated by a pre-frontal fetch of W/NW winds and should lift to 3-4ft+ around Margs with tiny waves to the north. An onshore change will move in mid-morning so surf the early.

Our large surf for the weekend is still on track, but so are the onshore winds.

We'll see back to back polar fronts projecting up and towards us, the first forming in the Heard Island region this afternoon, producing strong to gale-force SW winds up at us.

A secondary stronger front will then move on top of the already active sea state and generate a better fetch of gale to severe-gale SW Winds more in our southern swell window.

We should see an initial increase in weak mid-period energy Saturday morning with the groundswell proper due into the afternoon, reaching 6ft+ across the South West and 2ft further north. This will be with poor onshore S/SW tending W/SW winds.

The secondary front will generate a larger long-period S/SW groundswell for later Sunday and Monday morning, coming in more around 8-10ft on dark across Margs with 2-3ft sets to the north, easing from 8ft and 2-3ft respectively Monday.

Winds are still looking onshore out of the S/SW Sunday but our offshore for Monday is holding with a ridge of high pressure moving in, swinging winds light offshore across all locations.

We'll have one final look at this Friday.