Thirroul Surf Forecast and Surf Report

G'day, it's Rusty. Let's take a look at what's coming up for our little stretch of coast.

Straight off the bat, it's a bit of a tough start this Wednesday. We've got a solid 10ft S'ly swell hitting Thirroul, but that 19 mph SSW wind is making a mess of things with lumpy cross-chop. Thursday isn't much better with a 8ft SSE swell and cross winds, and the water temp is sitting at about 65°, which is pretty normal for this time of year.

Now, if you can hold out, Friday 18 September is where the good stuff starts. We've got a clean, glassy morning with a 4ft SSE swell and periods around 9 seconds – that's a nice little wave with moderate energy (355 in the combined swell energy). The winds are dead calm in the morning, so it'll be as clean as you'll see. Saturday 19 September drops off quickly though, with tiny 2ft waves and not much energy left.

The standout of this whole run is actually the afternoon of Sunday 20 September. It's only 2ft from the SSE, but the period is a ridiculous 18 seconds – that's serious groundswell energy (275 combined) and it's going to feel much better than the height suggests, especially as it's glassy. This will be a sneaky good session for the line-up at Thirroul. Because the swell direction is SSE and the optimum is SE, it's not a perfect match, but the long period will make it work.

During the next week, from Monday 22 September through to Thursday 25 September, the wind turns onshore and choppy most of the time with moderate wave energy up to around 800. It's a write-off for proper surfing unless you're desperate.

The following Friday 25 September afternoon has a little window of hope: 4ft from the NE with glassy conditions and light winds. It won't be big, but it'll be clean with 7-second period, so more of a longboarder's frolic.

Late in the run, Sunday 27 September morning shows a 6ft NE swell (729 energy), but it's only 8-second period and cross-shore winds, so it's average at best.

The last real highlight is Thursday 01 October morning. We've got a clean 5ft SSE swell with a solid 16 mph offshore W wind. The period is a short 6 seconds, so it'll be a bit bumpy but the offshore wind will hold it up nicely for more experienced surfers at Thirroul. The combined energy is moderate (283).

Overall, the Friday 20 September glassy session with that long-period groundswell is the pick, with the Friday 25 September afternoon a distant second.

Rusty out.

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