
Surf Forecasts:
Thirroul surf forecast from 1 Aug 2026:
- Best quality surf: Sunday 2 Aug, 1AM (local time) - 4.5ft (1.4m), 11s period, SSE swell with offshore winds.
- Most powerful swell: Sunday 2 Aug, 10AM (local time) - 5ft (1.6m), 12s period, SE swell with 785 kJ wave energy.
- Next surfable swell (1★+): Sunday 2 Aug, 1AM (local time) - 4.5ft (1.4m), 11s period with SSE 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 Sunday (Aug 02) at 1AM. The primary swell is predicted to be 1.4m and 11s period with a secondary swell of 0.5m and 15s. Another secondary swell of 0.5m and 3s 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 1.6m 12s and forecast to arrive on Sunday (Aug 02) at 10AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Tuesday (Aug 04) at 4PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Sun 2nd Aug) | 4.5ft (1.4m) 11s |
| Best Surf | 1AM (Sun 2nd Aug) | 4.5ft (1.4m) 11s |
| Most Powerful | 10AM (Sun 2nd Aug) | 5ft (1.6m) 12s |
Table - best surf conditions forecast for Thirroul over the next 16 days.
The Lowdown
Alright mate, Rusty here. Let’s suss out what’s comin’ for Thirroul over the next couple of weeks.
The water temperature is bang on for this time of year at 64°, nothin’ weird there. The week ahead starts with a few small windows of clean swell, but honestly, it’s a bit of a mixed bag. The standout is Sunday morning, August 2nd, when a solid 5 ft SE groundswell (12 second period) rolls in with a light NNW cross-offshore breeze. The combined energy is cranking at 800 (moderate wave energy), and conditions are clean. That’s your best bet.
Saturday afternoon, August 1st, is worth a paddle too – glassy conditions with a 5 ft SSE swell, though the energy is lower at 316. Still, clean and easy. Sunday afternoon gets messy with a cross-shore wind and questionable tide, so bail out before then.
Monday, August 3rd, has a small 3 ft SE swell with offshore winds morning and afternoon, but the energy is weak (170 and 164) and the wave quality is ordinary. Tuesday through to Thursday morning are mostly flat or poor, with a little bump late Wednesday afternoon – 4 ft S swell at 10 seconds, clean, but nothing special.
Thursday morning, August 6th, is glassy but the swell is short-period (7 seconds) and weak (169), so only small weak waves. Friday morning, August 7th, is your next solid run – 5 ft S swell, clean, glassy, with moderate energy (412). That’s a good session. Saturday morning, August 8th, also glassy with 4 ft SSE swell (208 energy), but the afternoon turns choppy.
The second week gets quieter. Sunday, August 9th, has a clean 4 ft SE swell in the afternoon (229 energy) – worth a look. Then a long flat spell hits from Monday 10th through to Wednesday 12th, with only tiny weak energy. Thursday 13th and Friday 14th see a new E swell building, but it’s a bit marginal and the wind is strong. Friday 14th morning has a 7 ft S swell (8 seconds) with massive energy (1008) – that’s big and short-period, only for experts and the wind is cross-offshore, so it’ll be clean but heavy. Afternoon sees a drop to 3 ft from the E with 13 second period, offshore wind, and 452 energy – that’s cleaner and more manageable.
From Saturday 15th onward, it’s small and weak again, with offshore winds but tiny waves – 1 ft to 2 ft. Not much to get excited about.
So, the pick of the whole 16 days is Sunday morning, August 2nd, with that 5 ft SE groundswell and clean NNW offshore wind. Friday morning, August 7th, is a close second. For the rest, you’ll be scratching for waves.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Mon morning, min 8°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 16°C on Tue afternoon, min 8°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Sat 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | ||||||||||||||
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) | SSE 9 | SSE 11 | SE 12 | SE 12 | SE 11 | SE 10 | SE 10 | SE 10 | SSE 10 | E 14 | E 11 | S 10 | S 10 | S 8 | SSE 7 | SSE 8 | S 9 | S 9 | SSE 8 | S 7 |
Wave Graph | ||||||||||||||||||||
311 | 492 | 785 | 514 | 314 | 156 | 106 | 28 | 10 | 16 | 9 | 71 | 262 | 247 | 160 | 173 | 363 | 402 | 284 | 108 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | off | cross-off | cross | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | glassy | cross-on | cross-off | glassy | cross-on | cross-off |
High Tide | 9:54PM1.48m | 10:38AM1.21m | 10:31PM1.41m | 11:18AM1.25m | 11:13PM1.31m | 12:03PM1.29m | 00:01AM1.20m | 12:53PM1.32m | 1:01AM1.09m | 1:52PM1.36m | 2:15AM1.00m | 2:58PM1.41m | 3:39AM0.97m | |||||||
Low Tide | 4:29AM0.14m | 4:22PM0.36m | 5:02AM0.16m | 5:11PM0.39m | 5:38AM0.20m | 6:07PM0.41m | 6:19AM0.25m | 7:13PM0.42m | 7:08AM0.31m | 8:30PM0.40m | 8:07AM0.36m | 9:51PM0.34m | ||||||||
— | — | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | 6:46 | — | — | 6:46 | — | — | 6:45 | — | — | |
5:15 | — | — | 5:15 | — | — | 5:15 | — | — | 5:16 | — | — | 5:17 | — | — | 5:17 | — | — | 5:19 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 12 | 18 | 17 | 13 | 22 | 21 | 12 | 17 | 16 | 10 | 16 | 16 | 10 | 16 | 15 | 11 | 16 | 15 | 11 |
Feels °C | 13 | 10 | 14 | 12 | 9 | 17 | 17 | 8 | 11 | 10 | 4 | 12 | 12 | 6 | 13 | 12 | 9 | 14 | 12 | 9 |
Swell 1 Height (m) Direction Period (s) | SSE 9 | SSE 11 | SE 12 | SE 12 | SE 11 | SE 10 | SE 10 | SE 10 | E 7 | SSE 10 | S 5 | S 10 | S 10 | S 8 | SSE 7 | SSE 8 | S 9 | S 9 | SSE 8 | S 7 |
311 | 492 | 785 | 514 | 314 | 156 | 106 | 28 | 4 | 10 | 5 | 71 | 262 | 247 | 160 | 173 | 363 | 402 | 284 | 108 | |
Swell 2 Height (m) Direction Period (s) | NE 7 | SE 15 | E 18 | E 17 | NE 5 | NE 5 | NE 5 | ESE 8 | SSE 10 | E 7 | SE 11 | E 10 | E 9 | E 9 | E 9 | E 9 | NE 7 | ENE 7 | SE 12 | SSE 9 |
2 | 104 | 6 | 6 | 12 | 9 | 11 | 12 | 10 | 4 | 5 | 18 | 15 | 6 | 6 | 6 | 2 | 5 | 23 | 67 | |
Swell 3 Height (m) Direction Period (s) | E 12 | NE 7 | S 21 | S 21 | E 16 | E 16 | E 16 | NE 5 | E 15 | E 14 | E 11 | E 13 | E 13 | E 12 | E 12 | E 12 | E 8 | E 16 | ENE 7 | SSE 11 |
3 | 2 | 9 | 9 | 5 | 5 | 5 | 3 | 4 | 16 | 9 | 14 | 4 | 3 | 3 | 3 | 1 | 5 | 4 | 12 | |
Wind waves Height (m) Direction Period (s) | — | NE 3 | N 3 | NE 4 | NNW 2 | NNW 3 | NNE 5 | WSW 3 | W 3 | WSW 3 | W 3 | WSW 3 | — | — | — | — | — | — | — | — |
— | 5 | 2 | 10 | 1 | 3 | 42 | 2 | 2 | 7 | 8 | 4 | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 112 | 0 | 0 | 0 | 0 | 132 | 468 | 74 | 2 | 0 | 0 | 0 | 38 | 0 | 0 | 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.











