
Surf Forecasts:
Thirroul surf forecast from 22 Jul 2026:
- Best quality surf: Friday 24 Jul, 7PM (local time) - 3.5ft (1.0m), 12s period, SSE swell with cross-offshore winds.
- Most powerful swell: Friday 24 Jul, 10PM (local time) - 5.5ft (1.7m), 13s period, SSE swell with 965 kJ wave energy.
- Next surfable swell (1★+): Wednesday 22 Jul, 10PM (local time) - 3ft (0.9m), 10s period with ENE 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 22) at 10PM. The primary swell is predicted to be 0.9m and 10s period with a secondary swell of 0.2m and 10s. 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 1.7m 13s 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 0.7m 4s period and expected on Thursday (Jul 23) at 7PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Wed 22nd Jul) | 3ft (0.9m) 10s |
| Best Surf | 7PM (Fri 24th Jul) | 3.5ft (1.0m) 12s |
| Most Powerful | 10PM (Fri 24th Jul) | 5.5ft (1.7m) 13s |
Table - best surf conditions forecast for Thirroul over the next 16 days.
The Lowdown
G'day, I'm Rusty. Let's have a look at what's on the cards for the next couple of weeks.
We've got a bit of a slow start, but things start to pick up from Thursday the 24th. The first real window of decent surf kicks off Friday morning the 25th and runs through the weekend, with a standout session on Saturday afternoon. After that, there's a long dry spell with next to nothing until Saturday the 1st of August, where we get a brief return of clean conditions.
The water temp at Thirroul (Australia) is sitting at 65°, which is about average for this time of year, so no surprises there.
Alright, let's get into it. The first real highlight is Saturday morning, July 25th. Thirroul picks up a 5ft Southerly swell, period 10 seconds, with a light Westerly offshore breeze. The combined energy is moderate (445). That's a solid morning for an intermediate surfer; the waves will have some push and that offshore wind will keep the faces nice and clean. The afternoon cleans up even more, dropping to 3ft from the South with a 10-second period, but the wind goes glassy. That's 3 mph Westerly, calm as a millpond, and the energy is still light (211). That Saturday afternoon session is the pick of the trip so far – clean, glassy waves, nothing too hectic, just perfect for a fun carve.
Then we head into Sunday the 26th. Morning looks good again at Thirroul with a 4ft Southerly swell (11-second period) and a light cross-offshore breeze from the WSW. Energy is moderate (402). It's clean and punchy. The afternoon turns a bit onshore, so the morning is the move.
After that, things drop off. From Monday the 27th through to the end of the month, the swell gets tiny, the wind turns messy, and there's nothing worth paddling out for. It's a real flat spell.
Then we get a bit of a surprise on Saturday, August 1st. The morning at Thirroul shows a 5ft Southerly swell with a 10-second period and a clean Westerly offshore wind. Energy is moderate (440). That's a solid, clean morning session. The afternoon is a bit lumpy, but the morning is a winner.
Sunday, August 2nd morning is also worth a mention – 5ft from the East, 7-second period, with a clean cross-offshore breeze. The period is short, so it'll be a bit walled up and choppy, but still surfable.
Looking further out, Tuesday afternoon, August 4th is a standout. Thirroul gets a 5ft East-northeast swell, 8-second period, with a light cross-offshore breeze. The energy jumps to a strong 552. That's a lot of push, and the conditions are clean – expect some fun, punchy lefts and rights.
The long-range forecast for Wednesday, August 5th morning looks promising too, with a 4ft East-northeast swell, 8-second period, and a clean offshore wind. But then it all goes to hell as a gale-force Southerly hits in the afternoon, blowing the place out completely.
So, to sum it up: the absolute best windows are Saturday afternoon, July 25th for the glassy conditions, and Tuesday afternoon, August 4th for the bigger, clean swell. Get out there if you can.
Rusty.
Short Range ForecastMostly dry. Very mild (max 19°C on Wed afternoon, min 7°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 19°C on Sat afternoon, min 10°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Wed 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | ||||||||||||||
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) | ENE 10 | ENE 10 | ENE 9 | ENE 9 | S 9 | S 9 | S 12 | S 12 | S 10 | S 10 | S 11 | S 11 | S 10 | S 10 | S 9 | S 10 | S 10 | S 9 | SSE 17 | SSE 17 |
Wave Graph | ||||||||||||||||||||
175 | 103 | 94 | 73 | 252 | 299 | 625 | 925 | 418 | 202 | 302 | 396 | 302 | 179 | 133 | 88 | 46 | 40 | 59 | 57 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-on | off | off | glassy | cross-off | cross-off | cross-on | off | cross-off | cross | cross-off | cross-off | cross | cross-off |
High Tide | 3:00AM0.92m | 3:41PM1.30m | 4:12AM0.87m | 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 | ||||||||
Low Tide | 9:28PM0.50m | 8:45AM0.45m | 10:38PM0.47m | 9:39AM0.49m | 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 | |||||||
— | — | 6:56 | — | — | 6:56 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:52 | — | — | |
5:07 | — | — | 5:08 | — | — | 5:08 | — | — | 5:09 | — | — | 5:10 | — | — | 5:10 | — | — | 5:12 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 15 | 19 | 17 | 10 | 13 | 13 | 8 | 19 | 19 | 12 | 17 | 17 | 12 | 19 | 18 | 13 | 18 | 18 | 14 |
Feels °C | 16 | 12 | 13 | 11 | 4 | 9 | 10 | 4 | 16 | 17 | 8 | 15 | 15 | 9 | 16 | 14 | 11 | 14 | 14 | 11 |
Swell 1 Height (m) Direction Period (s) | ENE 10 | ENE 10 | ENE 9 | ENE 9 | S 9 | S 9 | S 12 | S 12 | S 10 | S 10 | S 11 | S 11 | S 10 | S 10 | S 9 | S 10 | S 10 | S 9 | S 9 | SSE 17 |
175 | 103 | 94 | 73 | 252 | 299 | 625 | 925 | 418 | 202 | 302 | 396 | 302 | 179 | 133 | 88 | 46 | 40 | 25 | 57 | |
Swell 2 Height (m) Direction Period (s) | S 11 | S 10 | S 10 | S 9 | ENE 9 | ENE 9 | NE 8 | NE 8 | NE 9 | ENE 8 | NE 8 | ENE 8 | NE 8 | NE 8 | NE 7 | SE 15 | — | SE 15 | SSE 17 | S 6 |
21 | 8 | 7 | 14 | 45 | 29 | 18 | 18 | 20 | 7 | 3 | 6 | 2 | 2 | 2 | 8 | — | 8 | 59 | 7 | |
Swell 3 Height (m) Direction Period (s) | SE 12 | — | E 9 | SE 8 | SE 8 | S 18 | SSE 19 | — | S 19 | E 9 | E 8 | — | — | SE 14 | SE 18 | NE 8 | SE 16 | NE 4 | SE 15 | S 11 |
6 | — | 2 | 3 | 2 | 6 | 35 | — | 7 | 2 | 1 | — | — | 7 | 12 | 2 | 10 | 1 | 9 | 21 | |
Wind waves Height (m) Direction Period (s) | WSW 4 | W 3 | — | WSW 3 | WSW 3 | W 3 | — | — | — | — | WSW 3 | W 3 | — | WNW 2 | — | NNE 3 | — | SW 3 | — | N 4 |
1 | 1 | — | 7 | 3 | 1 | — | — | — | — | 3 | 1 | — | 1 | — | 2 | — | 2 | — | 1 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 2 | 2 | 2 | 0 | 10 | 0 | 0 | 0 | 2 | 0 | 38 | 0 | 0 | 21 | 0 | 0 | 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.










