Surf Forecasts:
Thirroul surf forecast from 2 Sep 2026:
- Best quality surf: Sunday 6 Sep, 7PM (local time) - 4ft (1.2m), 9s period, S swell with glassy winds.
- Most powerful swell: Sunday 6 Sep, 4PM (local time) - 4.5ft (1.3m), 12s period, S swell with 456 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 1PM (local time) - 2ft (0.6m), 10s 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 Wednesday (Sep 02) at 1PM. The primary swell is predicted to be 0.6m and 10s period with a secondary swell of 0.4m and 6s. Another secondary swell of 0.9m and 6s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Thirroul in the next 16 days are 1.3m 12s and forecast to arrive on Sunday (Sep 06) at 4PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Saturday (Sep 05) at 4PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Wed 2nd Sep) | 2ft (0.6m) 10s |
| Best Surf | 7PM (Sun 6th Sep) | 4ft (1.2m) 9s |
| Most Powerful | 4PM (Sun 6th Sep) | 4.5ft (1.3m) 12s |
Table - best surf conditions forecast for Thirroul over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s look at what’s on offer for Thirroul over the next couple of weeks.
We’ve got a bit of a slow start on the calendar. The first real surfable window creeps in on Wednesday, 2 September, but it’s nothing to get excited about. The swell is a tiny 2ft from the south, and while the wind is a clean cross-offshore, the wave energy is weak (114). It’s surfable, but I’d call it a "wait for a better one" sort of day. Thursday and Friday stay in the same paddling pool, with 2ft to 2ft south swell and light cross-offshore winds. The energy is low (84 to 119), so you’re not going to be pulling into anything special.
The weekend is a real write-off. Saturday has a gusty 18 mph offshore wind but the swell is a measly 2ft, and the energy drops to 66. Sunday afternoon sees a pulse of 4ft south swell with a long 12-second period, which is a groundswell, but the wind turns onshore from the ESE, making it messy. The energy jumps to 471, but it's not worth paddling out for.
The following week is a mixed bag. Monday the 7th offers a bit more hope with a 3ft SSE swell and clean cross-offshore winds in the morning. The energy is getting there (172), but it’s still a very ordinary session. Tuesday is a bit bigger at 4ft, but the wind is cross-onshore, so it’s a pass.
Now, the standout for the whole period is shaping up for Thursday, 10 September. The swell pumps up to a solid 12ft from the south-southeast, with a period of 9-10 seconds. The combined energy is massive (2407), which is very strong. However, the wind is light cross-onshore, so it won’t be perfect. This is only for the experienced crew – 12ft is in the expert-only zone. It’s a beach and reef setup here, so keep your wits about you.
Friday, 11 September, is the more surfable day for the average punter. The swell drops to a comfortable 6ft from the south, with a clean cross-offshore wind in the morning and light airs. The energy is still strong (830) and the waves should have good shape. The 9-second period means it’s a solid groundswell, breaking nicely on the points. That morning session is the pick of the entire outlook.
After that, the second week (from the 12th onwards) gets smaller again. The 12th and 14th see 3ft to 5ft waves with clean cross-offshore winds, but the energy is lower (292 to 327). The 15th of September has a tiny 3ft with glassy conditions, but it’s a weak, short-period swell. The rest of the week is a mix of onshore wind and very small, weak swell, so the forecast is a bit of a washout.
The water temp is sitting at 64°F on the 2nd, which is about average for the time of year, so no wetsuit drama there.
The real standout here is the Friday the 11th morning session. The 6ft south swell with clean offshore wind and strong energy will be the best surf on offer.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Wed morning, min 12°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 28°C on Sat morning, min 11°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | |||||||||||||||
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 10 | S 10 | S 10 | S 10 | S 10 | SSE 10 | S 10 | S 7 | SSE 11 | S 9 | S 10 | NE 6 | S 10 | S 12 | S 8 | SSE 8 | SSE 9 | SSE 8 | SSE 8 | SSE 8 | SSE 8 |
Wave Graph | |||||||||||||||||||||
77 | 73 | 49 | 53 | 52 | 32 | 92 | 26 | 39 | 43 | 30 | 20 | 125 | 456 | 165 | 112 | 140 | 119 | 142 | 120 | 50 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | cross-off | cross-off | cross-off | off | cross | off | cross-off | off | cross-off | cross | on | off | cross-off | cross-on | cross-on | cross-on | cross | off |
High Tide | 11:28AM1.41m | 11:50PM1.11m | 12:22PM1.41m | 00:56AM1.01m | 1:27PM1.40m | 2:19AM0.94m | 2:40PM1.42m | 3:46AM0.95m | 3:54PM1.47m | 5:00AM1.00m | 4:59PM1.53m | 5:58AM1.09m | 5:56PM1.59m | ||||||||
Low Tide | 5:55PM0.31m | 5:45AM0.32m | 7:04PM0.34m | 6:40AM0.40m | 8:25PM0.34m | 7:50AM0.45m | 9:47PM0.30m | 9:09AM0.46m | 10:57PM0.22m | 10:24AM0.42m | 11:54PM0.14m | 11:28AM0.35m | 00:42AM0.07m | ||||||||
6:13 | — | — | 6:13 | — | — | 6:11 | — | — | 6:09 | — | — | 6:09 | — | — | 6:07 | — | — | 6:05 | — | — | |
— | 5:37 | — | — | 5:37 | — | — | 5:38 | — | — | 5:39 | — | — | 5:39 | — | — | 5:40 | — | — | 5:42 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 19 | 24 | 23 | 15 | 22 | 21 | 15 | 28 | 27 | 17 | 19 | 17 | 13 | 21 | 16 | 15 | 19 | 19 | 15 |
Feels °C | 23 | 22 | 17 | 19 | 18 | 10 | 18 | 17 | 13 | 23 | 22 | 11 | 15 | 13 | 12 | 18 | 13 | 12 | 16 | 15 | 12 |
Swell 1 Height (m) Direction Period (s) | S 10 | S 10 | S 10 | S 10 | S 10 | SSE 10 | S 10 | S 7 | S 7 | S 9 | NE 6 | NE 6 | S 10 | S 12 | S 8 | SSE 8 | SSE 9 | SSE 8 | SSE 8 | SSE 8 | SSE 8 |
77 | 73 | 49 | 53 | 52 | 32 | 92 | 26 | 25 | 43 | 30 | 20 | 125 | 456 | 165 | 112 | 140 | 119 | 142 | 120 | 50 | |
Swell 2 Height (m) Direction Period (s) | NE 6 | NE 6 | ENE 10 | NE 6 | NE 6 | ENE 10 | NE 7 | ENE 10 | SSE 11 | E 9 | S 10 | S 9 | NE 6 | NE 6 | NE 8 | SSE 10 | S 8 | E 10 | E 11 | E 10 | NE 4 |
18 | 13 | 19 | 13 | 13 | 19 | 8 | 19 | 39 | 7 | 29 | 15 | 6 | 6 | 10 | 58 | 5 | 8 | 9 | 8 | 3 | |
Swell 3 Height (m) Direction Period (s) | ENE 10 | ENE 10 | NE 6 | ENE 10 | ENE 10 | NE 7 | ENE 10 | SSE 12 | E 10 | S 16 | E 10 | E 11 | E 11 | E 11 | E 10 | NE 7 | E 10 | — | NE 9 | NE 9 | E 10 |
19 | 19 | 5 | 18 | 19 | 8 | 19 | 14 | 7 | 19 | 7 | 9 | 9 | 9 | 8 | 2 | 8 | — | 3 | 3 | 8 | |
Wind waves Height (m) Direction Period (s) | WNW 3 | NE 6 | NW 2 | — | WSW 3 | WSW 3 | — | ENE 7 | NNE 4 | NNE 5 | NW 4 | SW 4 | SW 3 | — | — | — | NE 4 | S 4 | — | NE 8 | NNW 2 |
1 | 35 | 1 | — | 3 | 7 | — | 20 | 1 | 22 | 15 | 17 | 2 | — | — | — | 10 | 14 | — | 2 | 1 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 2 | 0 | 0 | 2 | 0 | 0 | 6 | 0 | 7 | 19 | 68 | 2 | 675 | 0 | 0 | 39 | 27 | 6 | 201 | 0 |
Best forecast wave conditions in Illawarra | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.











