Siriu Surf Forecast and Surf Report

G’day, Rusty here. We’ve got a bit of a slow burner on our hands at Siriu over the next 16 days, but there are a couple of windows that’ll get the heart pumping if you time it right. The first real action doesn’t start until Wednesday the 9th of September, so there’s a quiet gap right at the start.

Wednesday the 9th of September morning is where it kicks off proper. The wind drops to nothing—glassy, mate, glassy—and we’ve got a clean 5 ft swell wrapping in from the ENE with a short period of 8 seconds. The combined wave energy is moderate, reading 513, and the water temp is sitting about average for this time of year. It’s not a monster, but that offshore stillness will have the waves peeling nicely, especially for a beginner-friendly break like Siriu. Crowds are possible, so get in early.

Thursday the 10th of September afternoon brings a different vibe. The swell drops to 3 ft but the period stretches out to 15 seconds—proper groundswell—coming from the SSE. The combined energy jumps to 816, still moderate but packing more punch. The cross-shore wind keeps things a little lumpy, but the longer period means better shape and more grunt. Not a standout, but worth a look.

Now, the real standout is Sunday the 13th of September morning. This is the one to circle on the calendar. Solid 8 ft of southerly swell with an 11-second period, and the combined energy is a huge 3009—strong to very strong. The wind is cross-offshore and clean, so the waves will be well-shaped. This is for experienced surfers only; anything over 8 ft is heavy and challenging. The water temp remains about average for September.

Monday the 14th of September still has some size at 7 ft from the SSE, but the wind turns cross-onshore and choppy, and rain moves in. It’s messy. The combined energy drops to 1238. Best left alone.

Tuesday the 15th of September morning is another glassy gem. The swell is 7 ft from the ENE with an 8-second period, and the combined energy is 837—moderate. With glassy conditions, you’ll get clean, fun waves, but again, it’s getting up there in height for a beginner. The wind is off the land, so smooth faces.

After that, the second week (from the 16th of September onward) goes quiet. There are a few mornings with glassy conditions and smaller swell—like Friday the 18th of September morning with 4 ft from the SSE and a 10-second period, combined energy only 299, weak. The rest is mostly choppy or blown out. Still, Tuesday the 22nd of September morning has offshore wind and a clean 3 ft from the east, with glassy conditions in the afternoon. Consistent, small, but clean.

Overall, the best bet is Sunday the 13th of September morning for the crew who can handle it, and Wednesday the 9th of September morning for a cleaner, more manageable session. Don’t bother with the middle of the second week—it’s flat and foul.

Rusty.

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