Sponge bay Surf Forecast and Surf Report

G'day, Rusty here. Let’s have a look at Sponge Bay for the next couple of weeks.

Alright, we’ve got a bit of a slow start before things start looking interesting. The first proper surfable waves show up on Saturday, the 29th of August. It’s small, with 2ft swell from the southeast, but the wind is offshore from the north and it’s glassy clean. The water temp is about average for this time of year. It’s not going to blow your mind, but honestly, for a lazy Saturday paddle, it’s fine for beginners—just don’t expect much push. Sunday drops off completely, and through Monday morning it’s still ugly.

Come Monday afternoon though, things perk up. We get a 5ft SSE swell, clean with a light offshore breeze. The combined energy jumps right up (561). That’s a nice little session for the afternoon.

The standout window is Wednesday, the 2nd of September. Wednesday morning we’ve got 6ft from the SSE, clean with a light cross-offshore breeze. But Wednesday afternoon is where it’s at—6ft, SSE, glassy conditions, and a long 16-second period. The combined energy is pumping hard (2403). This is a proper groundswell, and for Sponge Bay being a beach and reef setup, that long period means the waves will have real shape and power. It’s only for experienced surfers at that size, but if you’re keen, that’s the session to circle.

Thursday morning is still decent with 4ft and clean conditions, though the energy drops a bit (670). After that, it fades right off into tiny stuff for the rest of the week and into the start of the following week.

There’s a long gap of small, poor surf until Sunday, the 6th of September. That afternoon brings back a 5ft SSE swell with a 14-second period and clean cross-offshore winds. Energy is solid (758). It’s a good option if you missed the earlier window.

Then it gets messy again. Monday the 7th through Wednesday the 9th is mostly small and ordinary. Thursday the 10th has a little bump of 3ft but nothing special.

Now, looking way out—on Friday, the 11th of September—the models are flirting with a big 10ft south swell. But the period is short (8 seconds), and while the wind is clean, that size is simply too much for Sponge Bay. It’s going to be a washing machine. The energy reading is huge (1716), but realistically this setup looks more interesting for kite surfing than a paddle session. Saturday and beyond go flat again.

So, for the whole outlook, the true standout is Wednesday afternoon, the 2nd of September. Get in the water then. The next best is Sunday afternoon, the 6th of September. Everything else is mostly filler.

Rusty.

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