Western Australian Surf Forecast by Craig Brokensha (issued Friday December 1st)

Best Days: Perth and Mandurah Monday morning, all locations Tuesday, Wednesday and Thursday mornings

Features of the Forecast (tl;dr)

• Fading swell Sat with weak S/SW-SW winds, fresher to the north
• Building mix of W/SW swells Sun with strong W/SW winds, easing
• Large W/SW groundswell arriving late Sun, peaking Mon with mod-fresh W/NW winds, easing (E to the north, ahead of sea breezes)
• Slowly Easing W/SW-SW swell Tue and Wed with S/SE-SE tending S/SW winds

Recap

Fun, clean peaky west swell yesterday to 2ft on the sets across Perth and Mandurah, bumpy though workable in the South West and to 3-4ft.

This morning is cleaner across the South West but smaller with tiny waves to the north.

This weekend and next week (Dec 2 - 8)

The coming weekend isn’t worth worrying about with the swell easing further tomorrow under weak onshore winds as a trough clips the state. Light S/SW-SW winds are due in the South West, a bit fresher to the north, while Sunday will see gusty W/SW winds, abating later as a front clips the state.

This front will be linked to the swell generating system moving in from the west, with a large W/SW groundswell due to follow into Monday.

As touched on in Wednesday’s update, the low linked to this swell was upgraded, with core wind speeds within the fetch reaching gale-force. The slow moving nature of the system should help bump up the expected size.

Sunday should see the surf starting to build later, though ahead of this it’ll be weak mid-period energy and windswell.

A peak is due on Monday morning with good 8ft surf due across the South West (possible rare bigger one), 3ft in Mandurah and 2-3ft across Perth.

The longevity of the swell looks good as well thanks to a secondary fetch of strong to gale-force SW winds wrapping around the backside of the low.

This should still maintain 6ft to occasionally 8ft sets across the South West on Tuesday morning, 2-3ft to the north, then easing Wednesday.

Local winds on Monday look dicey for the South West thanks to the slow moving nature of the low, with a moderate to fresh W’ly, easing through the day. Perth and Mandurah look clean and fun with offshore winds ahead of sea breezes.

Moving into Tuesday a high will push east, swinging winds S/SE-SE across most locations, with similar but stronger winds on Wednesday. This will favour protected spots.

Unfortunately winds won’t really kick around to the E/SE until next weekend along with a fun, moderate sized pulse of mid-period swell. More on this and a possible inconsistent groundswell Monday. Have a great weekend!