Surf Forecasts:
The Island surf forecast from 27 Aug 2026:
- Best quality surf: Friday 28 Aug, 3PM (local time) - 5ft (1.5m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Friday 4 Sep, 12AM (local time) - 7ft (2.1m), 17s period, SW swell with 2,592 kJ wave energy.
- Next surfable swell (1★+): Friday 28 Aug, 3PM (local time) - 5ft (1.5m), 16s period with SW swell.
Best Forecast Surf Conditions for The Island this week:
The surf forecast for The Island over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 28) at 3PM. The primary swell is predicted to be 1.5m and 16s period with a secondary swell of 0.1m and 16s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at The Island in the next 16 days are 2.1m 17s and forecast to arrive on Friday (Sep 04) at 12AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Sunday (Aug 30) at 12AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Fri 28th Aug) | 5ft (1.5m) 16s |
| Best Surf | 3PM (Fri 28th Aug) | 5ft (1.5m) 16s |
| Most Powerful | 12AM (Fri 4th Sep) | 7ft (2.1m) 17s |
Table - best surf conditions forecast for The Island over the next 16 days.
The Lowdown
Alright, listen up, gang. Rusty here with the full picture for The Island. We've got a run that starts with some promise and then really fires up, so pay attention.
We're kicking off with a solid push of SW groundswell, but the winds are a bit tricky. Friday the 28th gives us a 6ft SW swell, with a 16-second period, and the energy is cranking at 1658. The morning is a little scrappy with a cross-off breeze, but the afternoon cleans right up with lighter wind – 5ft and clean. It's not the best, but it's a start.
Saturday the 29th drops a bit to 4ft, but the morning wind turns offshore from the ENE. That'll mean clean, fun lines. The energy is still moderate at 532. Sunday the 30th has a tiny 2ft swell but with a very long 20-second period – proper groundswell. The wind is offshore again, so if you're on a longboard, you might find a few gems.
Monday the 31st jumps back to 6ft with a 19-second period, and the energy is strong at 2175. The morning is clean, but the afternoon gets cross-shore chop. Then things go south for a few days. Tuesday the 1st and Wednesday the 2nd of September are mostly a washout with strong onshore winds and messy conditions. Thursday the 3rd isn't much better.
Now, here's the one you've been waiting for. Circle Friday the 11th of September. This is the session. We're looking at a massive 12ft SW groundswell, with an 18-second period – that's deep, long-period energy. The combined energy is an insane 13004 – that's a lot of power. And the wind? A light offshore breeze from the east at just 3 mph. This is a consistent reef break, exposed to the SW. The morning is being called exceptional for experts. This is big, clean, and heavy. It's for experienced surfers only, because anything over 8ft gets serious. The afternoon stays solid at 8ft with a glassy surface.
The days leading up to it are a bit of a battle. We've got days like the 4th and 5th with sizeable swell but onshore or cross-onshore winds, making it a choppy mess. At a beach-and-reef setup like this, that kind of wind and size might be better suited for the kite surfers.
After that Friday blast, Saturday the 12th sees the swell drop to 7ft but with onshore wind, so it'll be a step down.
So, to sum it up: the first week has some clean but smaller windows. The absolute standout, no question, is the morning of Friday the 11th of September at The Island – massive, clean, long-period groundswell with perfect offshore wind. That's your day to get after it.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Fri afternoon, min 17°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 24°C on Tue afternoon, min 13°C on Wed morning). Winds increasing (light winds from the NNE on Mon afternoon, strong winds from the N by Tue morning). | ||||||||||||||||||
Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | ||||||||||||||
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) | SW 18 | SW 16 | SW 16 | SW 14 | SW 14 | SW 13 | SW 13 | SW 20 | SW 19 | SW 17 | SW 19 | SW 18 | SW 16 | SW 16 | SW 15 | SW 16 | SW 16 | SW 15 | SW 14 |
Wave Graph | |||||||||||||||||||
2216 | 1652 | 1101 | 676 | 507 | 342 | 321 | 239 | 504 | 1267 | 2146 | 1880 | 1096 | 875 | 505 | 1438 | 864 | 1028 | 534 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | off | cross-off | off | off | cross | off | cross-off | cross | cross-off | cross | cross-on | cross-on | on | cross-on | on |
High Tide | 12:18PM0.00m | 1:57PM0.00m | 3:31PM0.00m | 5:12PM0.00m | 7:05PM0.00m | 9:06PM0.00m | |||||||||||||
Low Tide | 1:09AM-0.00m | 2:44AM-0.00m | 4:20AM-0.00m | 6:07AM-0.00m | 8:05AM-0.00m | ||||||||||||||
— | 6:56 | — | — | 6:54 | — | — | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — | 6:50 | — | — | |
6:12 | — | 6:12 | — | — | 6:13 | — | — | 6:14 | — | — | 6:14 | — | — | 6:15 | — | — | 6:15 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 21 | 24 | 22 | 20 | 22 | 20 | 19 | 20 | 19 | 20 | 22 | 21 | 22 | 24 | 15 | 14 | 14 | 14 |
Feels °C | 17 | 16 | 22 | 18 | 17 | 18 | 15 | 18 | 18 | 15 | 15 | 19 | 16 | 14 | 18 | 11 | 11 | 10 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 18 | SW 16 | SW 16 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 13 | SW 17 | SW 19 | SW 18 | SW 16 | SW 16 | SW 15 | SW 16 | SW 16 | S 16 | SW 14 |
2216 | 1652 | 1101 | 676 | 507 | 342 | 321 | 210 | 239 | 1267 | 2146 | 1880 | 1096 | 875 | 505 | 1438 | 864 | 5 | 534 | |
Swell 2 Height (m) Direction Period (s) | S 18 | S 17 | S 16 | S 16 | SW 23 | SW 20 | SW 21 | SW 20 | SW 19 | SW 21 | S 19 | S 18 | S 16 | S 16 | SW 18 | S 17 | WSW 5 | — | SW 5 |
6 | 6 | 5 | 5 | 21 | 15 | 160 | 239 | 504 | 279 | 29 | 24 | 5 | 5 | 314 | 6 | 8 | — | 11 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | S 14 | SW 23 | — | S 19 | — | S 17 | — | — | — | — | — | — | S 16 | — | S 14 |
— | — | — | — | 4 | 21 | — | 7 | — | 6 | — | — | — | — | — | — | 5 | — | 4 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | ESE 4 | — | — | ESE 4 | — | — | — | NNW 5 | NW 4 | SW 16 | — | SW 15 | — |
— | — | — | — | — | — | 10 | — | — | 8 | — | — | — | 45 | 18 | 1115 | — | 1028 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 51 | 133 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 0 | 89 | 13 | 24 | 1073 | 346 | 495 | 897 | 1083 | 154 |
Best forecast wave conditions in Eyre Peninsula | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Information about the The Island Surf forecast
The above surf forecast table for The Island provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at The Island can be found by selecting the local surf guide option on the grey menu. Our The 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 (The 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 The 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.
Are you planning a holiday in Eyre Peninsula? If you are looking for accommodation near The Island, camping, hotels and holiday cottages in Eyre Peninsula, consider staying in Thevenard which is 111 km (69 miles) away.











