Surf Forecasts:
Thirroul surf forecast from 7 Jul 2026:
- Best quality surf: Wednesday 8 Jul, 10PM (local time) - 6ft (1.9m), 11s period, SSE swell with cross-offshore winds.
- Most powerful swell: Tuesday 7 Jul, 4PM (local time) - 11ft (3.5m), 11s period, SE swell with 2,679 kJ wave energy.
- Next surfable swell (1★+): Wednesday 8 Jul, 10PM (local time) - 6ft (1.9m), 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 Wednesday (Jul 08) at 10PM. The primary swell is predicted to be 1.9m and 11s period with a secondary swell of 1.7m and 8s. Another secondary swell of 1.3m and 12s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Thirroul in the next 16 days are 3.5m 11s and forecast to arrive on Tuesday (Jul 07) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Monday (Jul 13) at 1PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Wed 8th Jul) | 6ft (1.9m) 11s |
| Best Surf | 10PM (Wed 8th Jul) | 6ft (1.9m) 11s |
| Most Powerful | 4PM (Tue 7th Jul) | 11ft (3.5m) 11s |
Table - best surf conditions forecast for Thirroul over the next 16 days.
Updates in hr min s Forecast update imminent
Alright folks, Rusty here. Let's have a look at what's on the menu for Thirroul over the next couple of weeks.
Right off the bat, we've got a solid pulse of swell hitting us, but it's a bit of a messy affair. The first few days are a write-off for anything decent, with a good 10ft of SSE/SE swell rolling in on Tuesday, but it's cross-shore and cross-chop, making for a real battle. The wave energy is pumping hard, but it's just not clean. Stick to the sand between your toes for now, lads.
Things start to settle down late in the week. Thursday drops to 5ft, but the wind is still cross-shore. Friday morning, the 10th of July, is where it finally gets interesting. We're looking at a clean 5ft of SE swell, and the wind goes glassy. That's a window. For a beach and reef setup, that glassy morning is your best shot for a sneaky session before the crowds sometimes show up. Saturday morning the 11th is also a good shout with a clean 4ft of SE swell and a light offshore breeze from the WNW. The waves are small but clean.
After that, we hit a flat spell. From Sunday the 12th through to the middle of the following week, we're looking at tiny, ordinary waves, mostly under 3ft. There's a few glassy moments on the 15th and 16th, but it's knee-high at best. You'll be checking the forecast more than the ocean.
Now, for the long-range promise. Hold onto your boards. Tuesday the 21st of July is the standout. We're seeing a big jump in swell, with a solid 15ft from the S on the morning, powered by very strong energy. That's a serious groundswell with a 12-second period, which is long enough to wrap in nicely. The wind is a fresh offshore from the W, keeping things clean. This is a big swell, well over 8ft, so it's strictly for the experienced crew out the back. Wednesday the 22nd is still pumping with a 7ft S swell, but the wind shifts to a cross-offshore, so it's still got some punch but a bit less clean. Keep an eye on this one, but it's a long way out.
Overall, the best surf on offer is the glassy Friday morning the 10th for a small clean wave, and the big, powerful, expert-only session on Tuesday the 21st of July.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Tue night. Very mild (max 15°C on Tue morning, min 10°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Fri morning. Very mild (max 19°C on Sun morning, min 10°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | |||||||||||||||
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) | SE 10 | SE 11 | SE 11 | SE 10 | SE 10 | SSE 9 | SE 10 | SE 10 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 8 | ESE 11 | ESE 10 | ESE 11 | ESE 10 | ESE 9 | S 12 | S 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1924 | 2679 | 1740 | 1207 | 866 | 450 | 507 | 479 | 393 | 351 | 347 | 269 | 194 | 136 | 138 | 58 | 65 | 30 | 15 | 11 | 37 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross | cross | cross | cross | cross-on | cross-off | glassy | on | off | off | cross-off | off | off | off | off | cross-off | cross-off | cross-off |
High Tide | 1:34PM1.23m | 1:22AM1.17m | 2:29PM1.31m | 2:30AM1.09m | 3:26PM1.40m | 3:45AM1.05m | 4:24PM1.50m | 5:00AM1.03m | 5:22PM1.60m | 6:09AM1.05m | 6:18PM1.70m | 7:10AM1.09m | 7:12PM1.77m | ||||||||
Low Tide | 7:32PM0.50m | 7:48AM0.25m | 8:46PM0.46m | 8:41AM0.28m | 10:01PM0.38m | 9:39AM0.30m | 11:11PM0.27m | 10:39AM0.31m | 00:15AM0.15m | 11:39AM0.29m | 1:13AM0.04m | 12:36PM0.27m | 2:07AM-0.03m | ||||||||
 | |  |  | |  |  |  | | | | | | |  | | | | | | | |
 | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — |
 | — | 4:59 | — | — | 5:00 | — | — | 5:00 | — | — | 5:00 | — | — | 5:00 | — | — | 5:01 | — | — | 5:01 | — |
mm | — | — | 1 | — | — | — | — | 1 | 4 | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 15 | 15 | 14 | 12 | 15 | 14 | 12 | 15 | 14 | 12 | 18 | 17 | 13 | 19 | 18 | 13 | 18 | 18 | 12 |
Feels °C | 11 | 11 | 12 | 11 | 10 | 9 | 12 | 12 | 11 | 13 | 13 | 11 | 15 | 14 | 10 | 14 | 14 | 10 | 13 | 14 | 8 |
Swell 1 Height (m) Direction Period (s) | SE 10 | SE 11 | SE 11 | SE 10 | SE 10 | SSE 9 | SE 10 | SE 10 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 8 | ESE 11 | ESE 10 | ESE 11 | ESE 10 | ESE 9 | ESE 8 | S 8 |
| kJ | 1601 | 2164 | 1740 | 1207 | 866 | 450 | 507 | 479 | 393 | 351 | 347 | 269 | 194 | 136 | 138 | 58 | 65 | 30 | 15 | 7 | 31 |
Swell 2 Height (m) Direction Period (s) | ESE 14 | — | — | ESE 14 | ESE 12 | ESE 11 | ESE 11 | ESE 10 | S 16 | SE 12 | S 21 | S 16 | ESE 12 | ESE 13 | SSE 8 | SE 8 | SE 8 | SSE 7 | S 6 | S 12 | S 11 |
| kJ | 286 | — | — | 198 | 440 | 423 | 167 | 77 | 5 | 96 | 9 | 5 | 48 | 135 | 45 | 31 | 14 | 5 | 2 | 11 | 37 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | S 19 | S 18 | S 16 | — | S 20 | S 22 | S 16 | ESE 15 | S 15 | S 15 | ESE 12 | S 12 | S 8 | SE 7 | SE 7 | E 8 |
| kJ | — | — | — | — | — | 7 | 6 | 5 | — | 7 | 9 | 5 | 42 | 4 | 4 | 14 | 3 | 5 | 2 | 2 | 5 |
Wind waves Height (m) Direction Period (s) | SSE 10 | SE 11 | — | — | — | — | — | — | — | — | — | — | — | N 3 | WNW 3 | WNW 2 | WNW 3 | WSW 2 | W 3 | SW 4 | WSW 3 |
| kJ | 1924 | 2679 | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | 2 | 1 | 2 | 7 | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 5 | 11 | 48 | 5 | 11 | 2 | 2 | 5 | 0 | 0 | 11 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 328 | 10 | 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.
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