Average week, large powerful swell building for the weekend but onshore

Western Australia Surf Forecast by Craig Brokensha (issued Monday 16th April)

Best Days: Early Wednesday Mandurah and Perth, Thursday morning all locations, desperate surfers across magnets Friday morning


After a large and fairly consistent increase in SW swell through Friday afternoon, Saturday was as expected slower but large and strong when the sets came, best in protected spots. Mandurah was clean and back to 2-3ft, 2ft in Perth.

Sunday was much cleaner and still in the 6ft+ range across Margs, small and 2ft around Mandurah with tiny waves in Perth. We've got a further drop in size today favouring magnets across the South West dropped from 3-5ft this morning (tiny to the north).

Today’s Forecaster Notes are brought to you by Rip Curl

This week and weekend (Apr 17- 22)

The coming couple of days aren't looking too flash across the coast with the swell easing further tomorrow while the mid-latitude low that's due to generate a mid-period W/SW swell from the central Indian Ocean moving in from the west, bringing onshore winds.

We'll see poor and fresh W/SW-SW winds all of tomorrow, SW all day Wednesday across the South West (S/SE early around Mandurah and Perth).

The W/SW swell from the low should fill in Wednesday providing fun 2ft+ waves across Mandurah, 2ft sets in Perth and 4-6ft sets in the South West.

We'll see the mid-period W/SW swell easing through Thursday from 4ft on the sets across Margs and 1-2ft further north, with a slight improvement in winds, light S/SE across Margs and E/SE in Mandurah and Perth.

Friday will be small and weak with light morning E/NE winds swinging NW into the afternoon with an approaching front.

Now, our oversized W/SW groundswell for next weekend is still on track, but the high that would of provided favourable winds now will be pushed away by the remnants of the storm resulting in poor onshore conditions.

Coming back to the storm, and a large and powerful low has already formed south of South Africa, with a fetch of severe-gale to storm-force W/SW winds already picked up by satellite.

We're seeing similar strength winds projected through our western swell window today and early tomorrow while slowly projecting east-northeast, with the storm due to weaken while continuing to push east through tomorrow evening, and more so Wednesday and Thursday.

We'll see a very large long-period and strong W/SW groundswell generated by this storm, though it will be very inconsistent, with the forerunners arriving late Friday, with the bulk of the groundswell filling in Saturday and peaking into the late afternoon/evening.

Swell magnets should build to 10ft+ range across the South West later Saturday, though very inconsistent with 3-4ft sets in Mandurah and 3ft sets in Perth though the remnants of the storm will move in bringing terrible and fresh NW tending W'ly winds, SW into Sunday and a bit stronger as a secondary mid-latitude front pushes in adding some moderate sized windswell to the mix.

There's a chance of more variable breezes on Monday but we'll review this Wednesday.


teabag64's picture
teabag64's picture
teabag64 commented Monday, 16 Apr 2018 at 10:48pm

Looking good at home in Exmouth from Sunday

Paul Stewart

Latest News

Watch: Go Mad

Stu Nettle

31 years after mixing the original brew, Ross Clarke-Jones returns to share the Mad Wax formula.

Watch: Andy Irons: Kissed by God - Official Trailer

Ben Matson

Andy Irons: Kissed by God is a film about bipolar disorder and opioid addiction as seen through the life of three-time world champion surfer Andy Irons. 

Watch: Shipsterns Strike

Craig Brokensha

From WA to Tassie, Cabe Paparone captures a strike mission with Jarryd Foster and Jake Osman down to Shipstern Bluff. Featuring cameos by the local chargers.

Australian surfer Jae Haydon dies in Bali

Nicholas McLaren

The 35-year-old's body was found 12 hours after a broken board washed up last night near Padang Padang.

Watch: Brent Dorrington - Silent Wave

Ben Matson

Indo's been pumping for the last few days, and Brent Dorrington's been scoring.

Young gun Vaughan receives North Shelly call-up for Sailor Jerry Surftag showdown

Riley Laing has been in Indonesia competing at the WSL QS1500 Krui Pro and won’t make it back in time.

Watch: Through the pines

Stu Nettle

Chippa Wilson and Brendan Gibbens huck and slice through southwest France.

Watch: Raw footage from Nazare

Stu Nettle

UN forces storm Nazare.