Indian Ocean Dipole (IOD)

9 months ago
Reply
Register to post, see what you've read, and subscribe to topics.
SJB1
SJB1
WA
51 posts
WA, 51 posts
4 Sep 2025 9:33am
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
ptsf1111
ptsf1111
WA
596 posts
WA, 596 posts
4 Sep 2025 2:48pm
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.
stehsegler
stehsegler
WA
3580 posts
WA, 3580 posts
4 Sep 2025 5:12pm
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.
Mark _australia
Mark _australia
WA
23706 posts
WA, 23706 posts
5 Sep 2025 10:43am
stehsegler it can be average in Perth while it's howling up in Green Head.


That's every Seabreeze
Please Register, or first...
Topics Subscribe Reply