Surf Forecasts:
Thirroul surf forecast from 9 Jul 2026:
- Best quality surf: Friday 10 Jul, 7PM (local time) - 5ft (1.6m), 10s period, SE swell with glassy winds.
- Most powerful swell: Friday 17 Jul, 4AM (local time) - 18ft (5.5m), 11s period, SE swell with 7,059 kJ wave energy.
- Next surfable swell (1★+): Friday 10 Jul, 7PM (local time) - 5ft (1.6m), 10s period with SE 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 10) at 7PM. The primary swell is predicted to be 1.6m and 10s period with a secondary swell of 0.1m and 20s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Thirroul in the next 16 days are 5.5m 11s and forecast to arrive on Friday (Jul 17) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Sunday (Jul 12) at 1PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Fri 10th Jul) | 5ft (1.6m) 10s |
| Best Surf | 7PM (Fri 10th Jul) | 5ft (1.6m) 10s |
| Most Powerful | 4AM (Fri 17th Jul) | 18ft (5.5m) 11s |
Table - best surf conditions forecast for Thirroul over the next 16 days.
Alright, Rusty here, let’s break down what’s coming for the next couple weeks.
We’ve got a quiet start. Friday the 10th and Saturday the 11th are small and messy, not worth paddling out. Things start building mid-week, and then it gets proper.
The big standout is Saturday the 18th. Thirroul gets a solid 15ft swell from the SE, with a long 12 second period and glassy conditions. The combined energy is 7082 – that’s serious power. Experts only, but if you’re good, this is the day. The swell direction is perfect for the break.
Before that, Wednesday the 15th and Thursday the 16th bring big size but messy wind – cross-shore and cross-onshore, making it choppy. Might be more for kite surfing than paddling. Friday the 17th sees 16ft SE swell with a 12 second period and moderate cross-shore wind – big and raw, not for everyone.
After Saturday’s peak, Sunday the 19th morning still has an 8ft SE swell, clean and offshore, but dropping. Monday the 20th is a solid, cleaner day with 6ft SE swell and clean offshore wind – good for experienced surfers.
The second week fades. By the 22nd and 23rd it’s small and weak, energy dropping to triple digits. There’s a flicker on Saturday the 25th with a 10ft SSE groundswell (12 second period) and clean offshore wind, but that’s far out – promising, but not set in stone.
So the first few days are a bust, then it gets big and raw, with Saturday the 18th being the one to circle. Don’t miss it.
- Rusty
Short Range ForecastLight rain (total 5mm), mostly falling on Thu night. Very mild (max 17°C on Sat morning, min 9°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 17°C on Mon morning, min 9°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thu 16 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SE 9 | SE 9 | SE 10 | SE 9 | SE 9 | ESE 11 | ESE 10 | ESE 10 | ESE 10 | SSW 8 | S 11 | S 8 | S 7 | S 7 | S 18 | S 8 | S 8 | S 9 | SSE 8 | SSE 8 | SSE 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 393 | 449 | 456 | 275 | 168 | 164 | 149 | 77 | 54 | 22 | 23 | 10 | 9 | 3 | 6 | 97 | 682 | 1809 | 887 | 1622 | 3063 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-on | off | cross-off | cross | cross-off | off | off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross-on |
High Tide | 3:45AM1.05m | 4:24PM1.50m | 5:00AM1.03m | 5:22PM1.60m | 6:09AM1.05m | 6:18PM1.70m | 7:10AM1.09m | 7:12PM1.77m | 8:06AM1.12m | 8:05PM1.81m | 8:57AM1.15m | 8:55PM1.80m | 9:47AM1.18m | ||||||||
Low Tide | 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 | 1:31PM0.24m | 2:57AM-0.07m | 2:25PM0.23m | 3:45AM-0.07m | 3:17PM0.24m | |||||||
 |  |  |  |  |  | | | |  | | | | | | | |  | | | | |
 | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — |
 | — | — | 5:00 | — | — | 5:00 | — | — | 5:01 | — | — | 5:01 | — | — | 5:02 | — | — | 5:04 | — | — | 5:04 |
mm | 1 | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 12 | 14 | 14 | 12 | 17 | 17 | 13 | 14 | 13 | 11 | 17 | 17 | 11 | 16 | 16 | 11 | 13 | 14 | 12 | 15 | 15 |
Feels °C | 10 | 12 | 12 | 11 | 14 | 14 | 10 | 7 | 6 | 6 | 13 | 12 | 7 | 10 | 11 | 6 | 6 | 8 | 7 | 10 | 11 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 10 | SE 9 | SE 9 | SE 8 | ESE 10 | ESE 10 | ESE 10 | SSW 8 | S 11 | S 8 | S 7 | S 7 | S 6 | S 8 | — | — | S 15 | — | — |
| kJ | 393 | 449 | 456 | 275 | 168 | 93 | 149 | 77 | 54 | 22 | 23 | 10 | 9 | 3 | 1 | 97 | — | — | 18 | — | — |
Swell 2 Height (m) Direction Period (s) | SE 13 | SE 12 | S 21 | ESE 15 | ESE 12 | ESE 11 | SSE 8 | SE 8 | SSE 8 | ESE 9 | S 6 | S 11 | S 11 | S 9 | S 18 | E 10 | — | — | — | — | — |
| kJ | 83 | 126 | 9 | 22 | 157 | 164 | 45 | 17 | 6 | 17 | 3 | 9 | 2 | 2 | 6 | 2 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | S 16 | S 19 | S 22 | S 16 | S 15 | S 15 | S 15 | NE 5 | S 12 | SE 8 | ESE 8 | ESE 8 | E 8 | — | S 12 | N 6 | — | — | — | — | — |
| kJ | 5 | 7 | 9 | 5 | 5 | 4 | 4 | 1 | 3 | 2 | 7 | 7 | 1 | — | 3 | 1 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | NNW 3 | NE 3 | NNW 3 | W 4 | WSW 4 | W 3 | NW 3 | — | WNW 3 | WNW 3 | SW 3 | WSW 3 | S 8 | S 9 | SSE 8 | SSE 8 | SSE 9 |
| kJ | — | — | — | — | 1 | 2 | 6 | 18 | 16 | 2 | 2 | — | 3 | 1 | 2 | 2 | 682 | 1809 | 887 | 1622 | 3063 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 5 | 5 | 0 | 0 | 2 | 2 | 0 | 68 | 5 | 12 | 7 | 211 | 353 | 299 | 0 | 86 | 86 | 5 | 5 | 7 |
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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