Weekend Forecast 17th-19th May, 2019
It will be well worth squeezing in as much surfing as you can manage before winds swing onshore on Sunday. Friday is looking like the pick as early SE winds start to reorient to the ESE during the day; cleaning up a still thumping SSW groundswell in the well overhead range across exposed coasts. That should lead in an excellent window of opportunity early on Saturday morning as light offshore winds greet the tail end of this pulse. The approach of a strong frontal system will start to see North to NW winds quickly writing off conditions on Sunday, so best to make hay before then.
SSW groundswell slowly eases under cross-shore winds. South West: Semi-clean 6 to 8ft sets early, settling towards 5 to 7ft in the afternoon. Perth/Mandurah: Around 2ft early, bumping up later. WIND: Early SE to SSE 15 to 20 knots, tending ESE/SE and easing during the afternoon.
Easing SSW swell continues under offshore winds. South West: Clean 4 to 5ft+ sets across exposed breaks, settling during the arvo; otherwise grading smaller elsewhere with size depending on exposure. Perth/Mandurah: Clean in the 1 to 2ft+ range, fading later. WIND: Early light ENE or SE, tending variable, then light W to SW during the afternoon.
Smaller SW swell bottoms out. Southwest: Up to a slow 2 to 3ft along exposed breaks, otherwise smaller elsewhere and setting in the afternoon. Perth: Flat to 0.5ft. WIND: Early light ENE to NE 10 to 15 knots, tending Northerly, NNW 15 to 20 knots during the day and freshening to 20 to 30 knots into the afternoon.