Thirroul Surf Forecast and Surf Report

G'day, Rusty here. Let’s break down what’s headed for Thirroul over the next couple of weeks.

It’s a bit of a slow burner, but there’s a couple of real gems in the mix. The overall pattern is small, clean windows early on, then a big, long-period pulse at the very end of the month. The standout is definitely the last day of August.

Sunday the 23rd, the morning is your best bet. A 4ft S swell, period around 8 seconds, and a light cross-off breeze from the NNW. The combined energy is moderate at 215, and it’s clean. Not big, but rideable. The afternoon gets wrecked by a 20 km/h NNE crosswind and a dropping 2ft S swell, so morning only.

Monday the 24th, same deal. Early morning offers a 2ft S swell with a 10-second period and a light N cross-off – clean but small. Combined energy 173. Afternoon is blown out by a 20 km/h NE crosswind. Not much to write home about.

Tuesday the 25th, the morning is average with a 3ft ENE swell and a short 6-second period, but the afternoon comes alive. A 5ft NE swell pushes in, period 7 seconds, and combined energy hits 345. The wind is a light N cross-off, so it’s clean. That’s the best of the early week, but it’s short-period, so don’t expect perfect shape.

Wednesday the 26th and Thursday the 27th are mixed. Wednesday is messy. Thursday morning, though, is a cracker. Glassy conditions, a 4ft S swell with a 10-second period, and combined energy of 364. That’s a clean, solid southerly groundswell – get in the water.

Friday the 28th morning is another gem. Glassy again, 4ft S swell, 11-second period, and combined energy of 458. Solid, moderate energy southerly groundswell with clean conditions. Water temp is about average for the season. This is the best session of the first week.

Saturday the 29th and Sunday the 30th drop off. Smaller swells, onshore winds, poor quality. Sunday the 30th morning has a 4ft S swell but with a light cross-on, so it’s borderline.

Now for the big one. Monday the 31st of August morning. A 3ft SSE swell with a massive 19-second period. That’s a very long-period groundswell. Combined energy is a strong 716. The wind is a light cross-off from the NNW, so it’s clean. This is a serious energy swell, but with that period, it’ll be best suited to the point and reef sections at Thirroul – the beach break might be a bit too straight. This is the standout. It’s a week out, so keep an eye on it, but it’s promising.

Tuesday the 1st of September morning has a 3ft SSE swell, 12-second period, with a WNW offshore breeze. Combined energy 280. Clean and workable.

From Wednesday the 2nd through to Sunday the 7th, the surf fades. Swells drop under 3ft, periods shorten, and the winds are mixed. There are a few clean windows, but the energy is low (often under 137). The 4th of September Friday morning has a 2ft S swell with a 12-second period and a clean cross-off, but it’s small. The 5th of September Saturday morning has a 4ft S swell but with a cross-breeze, making it marginal.

So, the best calls: Friday the 28th morning for a clean, solid southerly, and the big one – Monday the 31st of August morning for that long-period SSE groundswell. That’s the one to lock in. Stay patient, and don’t miss it.

Rusty.

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