South Australian Forecast by Craig Brokensha (issued Wednesday 29th November)

Best Days: South Coast magnets Thursday morning

Recap

Tiny fading waves from 1ft on the Mid Coast yesterday morning, while the South Coast saw lighter winds and plenty of size to 3ft off Middleton but lumpy and raw conditions, improving slightly through the morning.

Today we've got much better conditions down South with a better offshore wind kicking in and easing sets from just over 2ft off Middleton. The Mid Coast is back to being tiny to flat.

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This week and weekend (Nov 30 – Dec 3)

This morning's swell will ease back over the coming days, becoming tiny across Middleton tomorrow morning, fading from 1-1.5ft max, best at Waits and Parsons. The Mid Coast will be flat.

Conditions will be clean through the morning across the South Coast with a N/NE offshore breeze, tending variable ahead of sea breezes and a late S/SW change owing to a trough moving in from the west.

Our small W/SW swell for the Mid Coast Friday is still on track, with a relatively weak but persistent front pushing up and under WA, currently generating a good fetch of W/SW winds in our western swell window.

We should see 1-1.5ft sets into Friday afternoon, if not for the odd sneaky bigger one if we're lucky, easing back from 1-1.5ft Saturday morning.

Winds are looking favourable during the morning and out of the S/SE, but as the swell really fills in, stronger S/SW winds look to create poor conditions as the surface trough strengthens.

Unfortunately these S/SW winds look to persist Saturday whipping up some S/SW windswell to a similar size, persisting Sunday morning before fading Sunday afternoon and Monday as winds relax due to the trough moving eastward.

On our South Coast, we'll see building levels of S'ly windswell as the trough deepens and strong and persistent S'ly winds are aimed into it.

The windswell should build from Friday afternoon, larger into Saturday and likely reaching a stormy 4-6ft, easing back from a similar size Sunday morning, further Monday as the strong onshore S'ly winds start to relax.

Unfortunately winds look to linger onshore into Monday and Tuesday as the swell continues to fade, spoiling a new SW groundswell.

Lighter and more variable into Wednesday morning, but with small fading surf. We'll have a closer look at this Friday.