Best days: Tuesday morning in Perth and Mandurah, Wednesday morning, Friday morning in Perth and Mandurah

Features of the forecast (tl;dr)

• SW groundswell tomorrow AM for Margs
• Onshore in Margs
• Mid-period W swell for metro regions with favourable winds
• Easing into Wed with a window in the AM for Margs
• Small clean leftovers up north
• Localised windswell Thur PM for metro regions but onshore
• Easing on Friday with better winds 
• Inconsistent SW groundswell Sat AM, onshore at Margs, better up north
• Stormy onshore surf into the weekend building up to XXL sizes early next week

Recap

The surf was fun over the weekend with pumping waves and good winds around Margs. A kick in size was seen into Saturday afternoon with the arrival of a new S/SW groundswell before it dropped on Sunday.

Metro regions also had fun peaky waves with clean conditions all weekend and small leftovers yesterday.

This week (Jul 1 - 4)

We have a new SW groundswell due to arrive tomorrow which now seems to come earlier than what was expected in the last notes and be on the coast in the morning. The source was a polar front developed last weekend not very well aimed at the metro regions, while Margs will see it building to 8ft but with onshore winds.

The Metro regions will see favourable winds in the morning and a weak mid-period westerly swell developed by a small system that pushed east over the weekend and is now weakening off the coast. This will build to 2ft+ in Perth and 2-3ft in Mandurah, easing through the day as winds go light onshore in the afternoon.

On Wednesday both of these swells ease and Margs will have a window early morning with E/NE winds before they strengthen out of the North and remain onshore until Friday afternoon with the passage of a trough.

Metro regions will see similar E/NE winds on Wednesday AM with small leftover waves.

The mid-period swell we were expecting for Thursday is now gone with the polar activity being delayed into the weekend, so there is not much happening other than a localised windswell into the afternoon as a low pushes close to the state, which will arrive with onshore conditions at the metro regions. 

By Friday the winds become more favourable as a patch of high pressure moves in between the frontal activity, with leftover short period waves at 2ft+ in Perth and 2ft Mandurah, and a clean window for Margs in the afternoon but with tiny surf before the next front moves in.

This weekend (Jul 5 - 6)

The next swell to arrive is a SW pulse for Saturday morning but it’s inconsistent since it’s being generated now, by a distant polar low that's currently south of Madagascar, weakening while moving further east This will build to 6ft+ but with onshore winds around Margs, 2ft in Mandurah and 1-2ft in Perth. 

The metro regions will have a window in the morning but from then on we have a thick frontal system pushing in with strong onshore winds for the following days with a localised stormy surf building into Sunday, Monday and Tuesday that could reach the XL range in South West. We’ll look into that again on Wednesday, until then, make the most out of the windows this week.