Siriu Surf Forecast and Surf Report

G’day, Rusty here. Looking at the next couple of weeks at Siriu, we’ve got a bit of a slow start before things start to pick up, especially later in the period. The first few days are a write-off with poor conditions, but don’t write the place off just yet – there are a couple of absolute crackers on the horizon.

The opening Friday (11th of September) is a no-go. Morning has light rain with a 20 km/h cross-shore wind ruining the 2ft Southerly swell, and the combined energy is weak (269). Stay on the beach. Friday afternoon sees a shift – the wind goes offshore from the West, but it’s blowing 20 km/h, and with only 5ft of short-period (7 seconds) chop from the Northeast, it’s not clean enough to get excited about. Saturday and Sunday are better but nothing special. Saturday has morning clean conditions, but the 5ft Southerly swell is period poor at 7 seconds. Sunday morning and afternoon are cleaner with a light offshore cross-off breeze from the Southwest and 5ft of Southeasterly swell at 8 seconds, but the energy is moderate (323 and 308).

Monday (14th) and Tuesday (15th) start showing some promise. Monday is a write-off with onshore winds, but Tuesday morning is a standout. The wind goes glassy, dead calm from the Northwest, and you’ve got 7ft of Easterly swell at 8 seconds pushing in with strong energy (686). That’s clean, fun-sized surf for intermediate to experienced surfers. The afternoon drops to 6ft with a cross-onshore wind, so the morning is the play.

The middle of the week (Wednesday 16th and Thursday 17th) is frustrating. Wednesday has clean conditions with a 6ft to 6ft Southerly swell, but it’s just not holding together nicely, and Thursday’s 7ft Southeasterly groundswell (14 seconds, 1511 energy) is glassy in the morning, but a cross-onshore wind makes it lumpy. That long period means it’s breaking a bit straight for the beach setup.

Now, the best of the whole run hits on Saturday the 19th of September. The morning is absolutely glassy – dead calm from the Southwest – and the swell jumps to 7ft from the Northeast at 8 seconds, with very strong energy (1136). This is clean, powerful, and the kind of session that sticks with you. It’s solid enough that beginners will want to sit this one out, but for the experienced crew, this is a standout. Don’t sleep on it. Sunday the 20th afternoon also goes glassy with a 5ft Easterly swell, and Monday the 21st morning is glassy with 4ft of the same, good for a longer, mellow session.

Moving into the last stretch, Tuesday the 22nd of September morning is clean with a light offshore cross-off breeze and 5ft of Southerly swell at 10 seconds (589 energy) – that’s a nice, tidy option. Friday the 25th of September morning sees a 6ft Southerly groundswell (13 seconds, 1248 energy) but the wind is a fresh 35 km/h cross-off from the Southwest. It’s clean, but that wind strength makes it a battle. Not the one.

The Saturday the 26th morning rounds things out with clean, light wind and 4ft of Southeasterly swell at 10 seconds.

Overall, the standout is Saturday the 19th of September morning – glassy, 7ft, strong energy, and dead clean. For the more consistent, smaller days, Tuesday the 22nd morning is worth paddling out for. The water temperature anomaly isn’t mentioned here, so I can’t comment on that, but keep the rubber handy as we head deeper into September.

Rusty.

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