Western Australia Surf Forecast by Craig Brokensha (issued Wednesday 18th November)

Best Days: Tomorrow morning, Friday morning in the South West, Saturday morning, Sunday, Monday and Tuesday mornings in the South West, protected spots next Wednesday

Recap

OK waves for the keen across all coasts yesterday with a bit of bump and lump across Perth and Mandurah, more so in Margs.

Today a new SW groundswell has filled in with onshore winds creating bumpy conditions across all locations again. The South West is 6-8ft with 3ft sets in Mandurah and 2ft waves across Perth.

This week and next (Nov 19 - 27)

This morning's spike in long-period SW groundswell should be peaking across most regions and we'll see it start to ease this afternoon, dropping further in size tomorrow from 5-6ft across the South West, 2ft in Mandurah and 1ft to possibly 2ft across Perth.

Winds should become variable across the South West through the morning, if not from dawn creating cleaner though likely slightly lumpy and morning sick conditions. Perth and Mandurah will be cleaner until afternoon sea breezes kick in.

Friday should see similar conditions with a variable breeze across the South West, S/SE-SE further north but with smaller amounts of swell. Perth and Mandurah look tiny with easing sets from around 4ft in the South West.

Our new pulses of mid-period W/SW swell for the weekend is on track, with a healthy frontal system currently north-east of Heard Island, generating a fetch of strong W/SW winds.

This will produce Saturday's best pulse, while a secondary trailing system looks weaker, with a slight downgrade in the size due Sunday.

Saturday's pulse should see the South West kick back to 5-6ft across the swell magnets, 1-2ft in Perth and Mandurah, easing back a little Sunday to 4-5ft and 1-1.5ft respectively.

Conditions on Saturday will be best in slightly protected spots with a morning S/SE breeze, giving into afternoon sea breezes.

Sunday looks nice and clean with an E'ly offshore across the South West, SE to the north along with the smaller swell.

Monday and Tuesday mornings should be clean but the surf will be smaller with the South West magnets the go for the keen.

Longer term, both EC and GFS are indicating a strong low forming south-west of us Sunday evening/early next week and a large, long-period SW groundswell for mid-late week. Winds look workable as well and from the south when it peaks Wednesday, but we'll review this Friday.