Western Australia Surf Forecast by Craig Brokensha (issued Friday 5th August)

Best Days: Saturday morning all coasts

Recap

A good reinforcing pulse of W/SW swell kept Margs up around 5ft with favourable morning offshores, while Perth was 1-2ft and clean all day.

Today the surf was similar early with good clean conditions across all locations, but a new W/SW groundswell has started to kick and this should reach 6ft to possibly 8ft at swell magnets in the South West and a stronger 2ft in Perth as winds tend variable.

This weekend and next week (Aug 6 - 12)

We've now got a better window of offshores expected across the region tomorrow morning as a developing mid-latitude slows a little.

E/NE offshores are expected early morning, swinging onshore after lunch. Today's swell should ease, dropping from the 5-6ft range in the South West and 2ft up in Perth.

Our large pulses of onshore W/SW swell are still on the cards for Sunday and early next week with an initial polar front due to project a fetch of strong to gale-force SW winds up and into us today and tomorrow, before merging with a trough and spawning a mid-latitude low Sunday.

Strengthening W/NW winds are due with a building W/SW groundswell to 8-10ft in the South West through the afternoon, 2-3ft in Perth.

The low will then aim a fetch of W/SW gales into us Sunday evening, tending more SW Monday.

Large mid-period W/SW tending SW energy is due, probably not topping a stormy 10ft+ when it peaks through Monday and Tuesday morning. Our models are over-forecasting the size, incorrectly combining local windswell and the groundswell.

Perth should kick to 3-4ft Monday and ease from this size Tuesday.

Onshore winds will unfortunately plague all spots with a strong but easing W/SW breeze Monday persisting from the W/SW Tuesday.

As the SW swell continues to fade Wednesday, increasing W/NW winds will leave no quality options, strengthening into Thursday as another mid-latitude low approaches from the west.

This is expected to produce another mid-period and large W'ly swell, aimed mainly towards Perth with onshore winds, but more on this Monday. Have a great weekend!