
Surf Forecasts:
Thirroul surf forecast from 24 Jul 2026:
- Best quality surf: Friday 24 Jul, 10PM (local time) - 6ft (1.8m), 14s period, SSE swell with offshore winds.
- Most powerful swell: Friday 24 Jul, 10PM (local time) - 6ft (1.8m), 14s period, SSE swell with 1,233 kJ wave energy.
- Next surfable swell (1★+): Friday 24 Jul, 7PM (local time) - 5ft (1.5m), 12s period with S swell.
Best Forecast Surf Conditions for Thirroul this week:
The surf forecast for Thirroul over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Jul 24) at 7PM. The primary swell is predicted to be 1.5m and 12s period with a secondary swell of 0.3m and 8s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Thirroul in the next 16 days are 1.8m 14s and forecast to arrive on Friday (Jul 24) at 10PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Saturday (Jul 25) at 10PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Fri 24th Jul) | 5ft (1.5m) 12s |
| Best Surf | 10PM (Fri 24th Jul) | 6ft (1.8m) 14s |
| Most Powerful | 10PM (Fri 24th Jul) | 6ft (1.8m) 14s |
Table - best surf conditions forecast for Thirroul over the next 16 days.
The Lowdown
G’day, I’m Rusty, and let’s talk about the waves.
The overall picture here is a bit of a rollercoaster over the next 16 days. There’s some real quality early on, then a long, flat patch, and a couple of later pulses that might get your attention.
The big standout is Friday morning, July 24th at Thirroul. Swell is a solid 5 ft from the south, with a 9-second period. Wind is light from the southwest at 6 mph, making it a clean cross-off. Water temp is 65°, a touch warmer than normal. The combined energy is moderate (675). This is the prime window – clean, good size, and the south swell is perfect for the spot. Crowds are possible, but it’s worth it. This is the one to aim for.
Friday afternoon drops off fast. Swell goes to 3 ft from the SSE with a long 12-second period, but the wind turns onshore from the east at 3 mph, and the conditions are marginal. Skip it.
Saturday morning, July 25th is a solid backup. Swell is 5 ft from the south, 11-second period, with a clean offshore wind from the west at 6 mph. Combined energy (450) is moderate. A good session, but not as strong as Friday. Saturday afternoon turns glassy with a flat calm wind and 4 ft south swell, 10-second period. That’s a clean, smaller afternoon session.
Sunday morning, July 26th brings another pulse: 6 ft south swell, 10-second period, cross-off wind from the southwest at 6 mph. Combined energy (612) is strong. Another very good window, but the afternoon goes messy.
From Monday, July 27th through to Thursday, August 7th, the surf goes quiet. A few glassy or offshore mornings with tiny waves (1.0 ft to 4 ft), but the energy is weak (as low as 16 to 232) and the quality is poor. There’s a long dry spell with a lot of onshore winds and low energy. It’s a real flat patch.
Then there’s a couple of later highlights. Wednesday morning, August 5th has a 5 ft south swell, a short 6-second period, but the wind is offshore from the WNW at 9 mph, making it clean. Combined energy (282) is moderate. A decent option. Thursday morning, August 6th is another one: 5 ft south swell, 7-second period, glassy with a light SSE breeze. Combined energy (479). That’s a clean, punchy morning.
The later standout is Saturday morning, August 8th. We get a 3 ft swell from the south with a very long 12-second period – that’s groundswell. The wind is dead calm, making it glassy. Combined energy (300) is moderate. This is a gem for the structure, but that long period might make it a bit straight at a beach and reef. On a glassy morning, it’s a great call.
So, the best is Friday morning July 24th – clean, solid, and the most energy. Saturday morning August 8th is the promising long-range hope, but it’s a ways out. The middle of the period is mostly a write-off.
Rusty out.
Short Range ForecastMostly dry. Very mild (max 18°C on Sat morning, min 6°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Tue morning, min 8°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | S 9 | SSE 12 | SSE 12 | S 11 | S 10 | S 11 | S 10 | S 10 | S 9 | S 9 | SSE 9 | S 8 | S 8 | S 8 | S 8 | SSW 3 | S 8 | S 7 | S 10 | S 9 | S 9 |
Wave Graph | |||||||||||||||||||||
440 | 244 | 1009 | 441 | 255 | 345 | 609 | 400 | 251 | 165 | 132 | 68 | 22 | 13 | 8 | 7 | 428 | 209 | 490 | 275 | 281 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | on | off | off | glassy | cross-off | cross-off | on | off | glassy | cross-on | cross-off | off | off | off | cross | cross-on | cross-off | cross | cross-on | cross-off |
High Tide | 4:35PM1.33m | 5:17AM0.88m | 5:25PM1.37m | 6:11AM0.91m | 6:11PM1.42m | 6:56AM0.95m | 6:53PM1.48m | 7:36AM0.99m | 7:32PM1.52m | 8:13AM1.04m | 8:08PM1.55m | 8:49AM1.08m | 8:44PM1.56m | ||||||||
Low Tide | 11:37PM0.42m | 10:35AM0.49m | 00:25AM0.36m | 11:28AM0.47m | 1:07AM0.30m | 12:15PM0.43m | 1:45AM0.24m | 12:58PM0.40m | 2:20AM0.20m | 1:39PM0.36m | 2:54AM0.16m | 2:18PM0.34m | 3:26AM0.14m | ||||||||
6:56 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — | 6:50 | — | — | |
— | 5:08 | — | — | 5:09 | — | — | 5:10 | — | — | 5:10 | — | — | 5:12 | — | — | 5:13 | — | — | 5:13 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 9 | 18 | 18 | 12 | 16 | 16 | 12 | 17 | 17 | 12 | 20 | 20 | 12 | 14 | 13 | 11 | 13 | 13 | 11 |
Feels °C | 10 | 11 | 4 | 16 | 16 | 8 | 13 | 13 | 10 | 14 | 13 | 10 | 16 | 16 | 8 | 10 | 7 | 7 | 8 | 9 | 7 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 9 | SSE 12 | S 11 | S 10 | S 11 | S 10 | S 10 | S 9 | S 9 | SSE 9 | S 8 | S 8 | S 8 | S 8 | SE 13 | E 13 | SSE 12 | S 10 | S 9 | S 9 |
199 | 181 | 1009 | 441 | 255 | 345 | 609 | 400 | 251 | 165 | 132 | 68 | 22 | 13 | 5 | 7 | 3 | 26 | 490 | 275 | 281 | |
Swell 2 Height (m) Direction Period (s) | ENE 9 | SSE 12 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | NE 8 | NE 8 | NE 8 | NE 8 | SE 14 | NE 3 | SE 7 | SE 7 | SE 14 | — | SE 13 | E 13 | E 12 | E 12 | E 13 |
29 | 244 | 14 | 7 | 7 | 7 | 3 | 2 | 2 | 2 | 8 | 2 | 8 | 7 | 8 | — | 7 | 3 | 3 | 3 | 3 | |
Swell 3 Height (m) Direction Period (s) | S 18 | NE 8 | — | E 9 | E 9 | E 8 | — | — | S 14 | SE 18 | NE 8 | SE 16 | SE 15 | SE 15 | SE 6 | SE 6 | — | E 8 | — | E 10 | E 10 |
7 | 18 | — | 2 | 2 | 1 | — | — | 4 | 12 | 2 | 10 | 8 | 8 | 2 | 2 | — | 1 | — | 2 | 2 | |
Wind waves Height (m) Direction Period (s) | S 9 | — | WNW 3 | W 3 | — | WSW 3 | — | — | — | — | — | NNW 2 | N 4 | — | WNW 3 | SSW 3 | S 8 | S 7 | — | — | — |
440 | — | 1 | 1 | — | 3 | — | — | — | — | — | 1 | 1 | — | 3 | 7 | 428 | 209 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 36 | 0 | 0 | 0 | 0 | 0 | 94 | 0 | 0 | 51 | 0 | 7 | 128 | 151 | 86 | 316 | 0 | 36 | 36 | 0 |
Best forecast wave conditions in Illawarra | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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Information about the Thirroul Surf forecast
The above surf forecast table for Thirroul provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Thirroul can be found by selecting the local surf guide option on the grey menu. Our Thirroul surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Thirroul) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Thirroul may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Are you planning a holiday in Illawarra? If you are looking for accommodation near Thirroul, camping, hotels and holiday cottages in Illawarra, consider staying in Wollongong which is 12 km (7 miles) away. Other places in and around Illawarra where you can find information about places to rent, and car hire include Port Kembla which is 19 km (12 miles) away, Engadine, Cronulla and Caringbah.










