Stormy onshore waves building tomorrow, better S/SW swell later week and weekend

Craig Brokensha picture
Craig Brokensha (Craig)

Western Australia Surf Forecast by Craig Brokensha (issued Monday 20th February)

Best Days: Wednesday morning Perth, Thursday through Sunday morning in the South West

Recap

Friday's large and powerful S/SW groundswell peaked into the evening, dropping back a bit overnight leaving clean 6ft+ sets across the South West Saturday morning, with 1-2ft waves around Perth and Mandurah.

Sunday was over half the size and best at South West swell magnets with a good offshore wind.

Today the surf was small to tiny along with onshore winds.

This week and weekend (Feb 21 – 26)

Currently a weak front is pushing up towards us, generating a fetch of strong W/SW tending SW winds. This system will push into us at dawn tomorrow, bringing with it a building mid-period SW swell.

The South West should build to 5-6ft into the afternoon, with stormy 2ft waves on the metro beaches along with strong but easing SW tending S/SW winds.

The swell should ease from a similar size Wednesday but with lighter SE winds across Perth and S-S/SE in the South West. Thursday will be cleaner across the South West with a morning E/SE breeze but the swell will be small and easing from 3-4ft or so.

Into the late afternoon though our slightly stronger increase in S/SW groundswell is due.

This will be due to a secondary slightly stronger but less than favourably aligned polar front firing up in our southern swell window, followed by another system on its tail Thursday.

Two S/SW groundswell pulses are expected, the first for late Thursday and the second for Saturday morning.

Both look similar in size, with Thursday's reaching 4-5ft later in the day easing from a similar size Friday morning, similar again into Saturday morning, with 1ft+ waves around Perth.

Winds each morning for this swell are looking good with an E/SE offshore Friday morning, SE Saturday morning while less favourable S/SW winds are due into Sunday.

Longer term there's nothing major due at all across the state after a small pulse of SW groundswell later Sunday/Monday.

The Southern Ocean looks to become inactive, so try and make the most of the swells due later week.