Surf Forecasts:
Windang Island surf forecast from 18 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 10PM (local time) - 3ft (0.9m), 7s period, E swell with cross-offshore winds.
- Most powerful swell: Wednesday 19 Aug, 1AM (local time) - 2ft (0.6m), 11s period, ESE swell with 102 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 10PM (local time) - 3ft (0.9m), 7s period with E swell.
Best Forecast Surf Conditions for Windang Island this week:
The surf forecast for Windang Island over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 18) at 10PM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.8m and 7s. Another secondary swell of 0.5m and 12s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Windang Island in the next 16 days are 0.6m 11s and forecast to arrive on Wednesday (Aug 19) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Tuesday (Aug 25) at 1AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Tue 18th Aug) | 3ft (0.9m) 7s |
| Best Surf | 10PM (Tue 18th Aug) | 3ft (0.9m) 7s |
| Most Powerful | 1AM (Wed 19th Aug) | 2ft (0.6m) 11s |
Table - best surf conditions forecast for Windang Island over the next 16 days.
The Lowdown
G’day, it’s Rusty here. Let’s cut to it—this stretch is mostly a waiting game. The next week and a half is pretty flat and ordinary, with hardly any swell and winds that are mostly cross-shore or onshore. You’ll see a lot of days with waves under 3 feet, and the energy is weak, often in the low double digits or even single digits (like 60 or 44). There are a few moments, like Friday the 21st morning with a clean 2.6ft easterly and light offshore wind, but it’s still pretty small. The standout is definitely the end of the run—Monday the 31st and Tuesday the 1st look like they’ll fire.
Windang Island (Illawarra) is the only break in the mix, and it’s a reef and point setup, exposed to the SE. For the first week, you’re mostly looking at poor surf—lots of 1ft to 2ft slop, short periods, and cross-onshore breezes messing it up. The water’s sitting at 64.4°F, which is about average for this time of year, so no drama there.
Now, let’s talk about the good stuff. From the 24th afternoon, things start to get a bit more interesting—a glassy 2.3ft with a bit more energy (106) turns into a surfable but still ordinary session. Then the 25th has a moderate offshore with 2.3ft (113). Still small, but cleaner.
The real kicker comes on Monday the 31st. The morning kicks off with a 6.9ft southerly, 10-second period, and a light offshore—energy jumps to 891. That’s a proper pulse. The afternoon gets even better: 9.8ft at 10 seconds with a moderate offshore, and the energy rockets to 2717. That’s strong, powerful surf. This is the standout, no question. It’s big enough to sort out the experienced crew—this is not for beginners. Over 8ft means experts only. The offshore wind is going to keep it clean, and the south direction suits the exposure.
Tuesday the 1st still has solid 9.8ft surf in the morning, but the wind turns cross-off, and it’s a bit more questionable on the tides—still a good day, but not as crisp as Monday. The energy is still strong at 1567. The afternoon drops off with a cross-on breeze and it gets choppy.
Then Wednesday the 2nd morning looks fantastic: 5.9ft south-east swell, glassy, with a strong energy reading of 1071. That’s another clean session, though smaller than Monday. The afternoon gets onshore and a bit messier at 7.2ft.
So here’s the call: if you can wait, Monday the 31st and Tuesday the 1st are your days. Monday looks the pick of the lot—big, clean, and powerful. The long-range promise is real, but keep in mind it’s a week and a half out, so it’s promising, not certain. Before that, it’s mostly a skimboard and kite-surf kind of stretch with the small, choppy conditions. Keep the faith—this one’s worth the wait.
Short Range ForecastLight rain (total 2mm), mostly falling on Tue morning. Warm (max 22°C on Thu morning, min 12°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Fri morning, min 12°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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) | E 6 | ESE 14 | ESE 11 | ESE 10 | ESE 10 | ESE 9 | ESE 8 | ESE 6 | ENE 6 | ENE 7 | ENE 6 | ENE 6 | NE 6 | S 8 | S 4 | SSE 17 | S 9 | S 10 | S 10 | ENE 8 | S 9 |
Wave Graph | |||||||||||||||||||||
79 | 61 | 102 | 82 | 74 | 70 | 37 | 24 | 35 | 50 | 26 | 14 | 8 | 12 | 9 | 57 | 24 | 48 | 48 | 52 | 25 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-off | cross | cross-on | cross-off | cross | cross-on | cross-off | off | cross-off | off | cross-off | on | off | cross-on | cross-on | cross-off | cross-off | glassy | cross-off |
High Tide | 12:09PM1.31m | 00:20AM1.05m | 12:57PM1.28m | 1:17AM0.93m | 1:52PM1.25m | 2:28AM0.86m | 2:55PM1.25m | 3:49AM0.84m | 3:59PM1.27m | 4:58AM0.87m | 4:56PM1.32m | 5:50AM0.92m | 5:44PM1.38m | ||||||||
Low Tide | 6:32PM0.42m | 6:17AM0.40m | 7:36PM0.47m | 7:00AM0.48m | 8:51PM0.49m | 7:55AM0.53m | 10:06PM0.48m | 9:02AM0.56m | 11:09PM0.43m | 10:09AM0.54m | 11:58PM0.37m | 11:07AM0.50m | 00:38AM0.30m | ||||||||
6:33 | — | — | 6:31 | — | — | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:28 | — | — | 6:26 | — | — | |
— | 5:27 | — | — | 5:28 | — | — | 5:28 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — | — | 5:30 | — | |
mm | 1 | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | 1 | 8 |
Temp °C | 17 | 16 | 14 | 18 | 17 | 15 | 22 | 18 | 16 | 20 | 19 | 16 | 18 | 17 | 14 | 18 | 17 | 14 | 22 | 21 | 16 |
Feels °C | 14 | 13 | 12 | 15 | 12 | 12 | 18 | 17 | 15 | 19 | 17 | 13 | 15 | 16 | 13 | 15 | 13 | 12 | 20 | 21 | 15 |
Swell 1 Height (m) Direction Period (s) | ESE 6 | ESE 6 | ESE 8 | ESE 6 | ESE 10 | ENE 5 | ENE 6 | ESE 6 | ENE 6 | ENE 7 | ENE 6 | ENE 6 | NE 6 | S 8 | S 4 | S 8 | S 9 | NE 5 | S 10 | S 10 | NE 5 |
60 | 53 | 60 | 57 | 74 | 33 | 21 | 24 | 35 | 50 | 26 | 14 | 8 | 12 | 9 | 37 | 24 | 10 | 48 | 46 | 10 | |
Swell 2 Height (m) Direction Period (s) | S 11 | S 10 | ESE 11 | ESE 10 | S 8 | ESE 9 | ESE 8 | E 10 | S 12 | S 11 | S 10 | S 5 | S 4 | ENE 6 | NE 6 | SSE 17 | SSE 14 | S 10 | NE 5 | S 16 | S 9 |
55 | 35 | 102 | 82 | 11 | 70 | 37 | 2 | 3 | 2 | 2 | 2 | 1 | 3 | 5 | 57 | 18 | 48 | 6 | 5 | 25 | |
Swell 3 Height (m) Direction Period (s) | ESE 10 | ESE 14 | S 10 | S 8 | — | E 9 | E 11 | S 13 | E 10 | — | SE 7 | SE 7 | S 9 | E 9 | S 9 | ENE 6 | ENE 9 | ENE 9 | NE 8 | E 13 | NE 9 |
11 | 61 | 29 | 12 | — | 2 | 2 | 3 | 2 | — | 2 | 2 | 6 | 2 | 6 | 3 | 8 | 7 | 16 | 3 | 19 | |
Wind waves Height (m) Direction Period (s) | E 6 | ENE 5 | — | — | E 6 | NNW 2 | — | NE 6 | — | WSW 4 | E 2 | — | SSW 4 | SSE 4 | — | — | ENE 3 | — | — | ENE 8 | NW 3 |
79 | 17 | — | — | 56 | 1 | — | 15 | — | 1 | 1 | — | 3 | 4 | — | — | 2 | — | — | 52 | 2 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 7 | 26 | 0 | 7 | 448 | 0 | 7 | 120 | 2 | 2 | 13 | 254 | 151 | 661 | 254 | 7 | 222 | 2 | 7 | 0 | 2 |
Best forecast wave conditions in Illawarra | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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Information about the Windang Island Surf forecast
The above surf forecast table for Windang Island provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Windang Island can be found by selecting the local surf guide option on the grey menu. Our Windang Island 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 (Windang Island) 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 Windang Island 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.
Windang Island is 7 km (4 miles) from the city of Port Kembla. If you plan a holiday in Illawarra, look for hotels and other accommodation in Port Kembla. Port Kembla has rooms for a wide range of budgets as well as car hire and transport links.











