What is the effect of a negative IOD on the WA summer seabreeze? ...sounds like increased frequency of West Coast Troughs?

Could it be a poor year for wind?

www.weatherzone.com.au/news/negative-indian-ocean-dipole-a-nearcertainty-to-develop/1890850

Yeah, bad news and kinda expected after this winter. More cloud cover will affect the seabreeze.

Get those foils ready!

This is what Gemini thinks about it:

The outlook for wind sport fanatics in Perth during a negative IOD summer is likely to be mixed, but generally not ideal.
Bad for Consistency: If you rely on the consistent, strong, and predictable "Fremantle Doctor" (Perth's famous seabreeze), a negative IOD summer will likely be a disappointment. The conditions that create the Doctor - hot, clear days followed by a strong southerly wind - will be less frequent.

ironically if you make it do a deep think it will come back with a different answer. Early spring (September - November) generally less wind. December to February is up in the air as it's mainly affected by inland temperatures.

Read a few years ago in a scientific article that they now think the Lewin Current and how it's positioned throughout the seasons has a big impact as well. The overall weather pattern is important but on a micro level it's a lot more complex. Which I guess is why sometimes it can be average in Perth while it's howling up in Green Head.

Select to expand quote

stehsegler it can be average in Perth while it's howling up in Green Head.

That's every Seabreeze