
Surf Forecasts:
The Island surf forecast from 11 Sep 2026:
- Best quality surf: Wednesday 16 Sep, 12PM (local time) - 6ft (1.8m), 15s period, SW swell with offshore winds.
- Most powerful swell: Tuesday 15 Sep, 3PM (local time) - 7ft (2.1m), 14s period, SW swell with 1,752 kJ wave energy.
- Next surfable swell (1★+): Wednesday 16 Sep, 12PM (local time) - 6ft (1.8m), 15s 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 Wednesday (Sep 16) at 12PM. The primary swell is predicted to be 1.8m and 15s period with a secondary swell of 0.2m and 15s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at The Island in the next 16 days are 2.1m 14s and forecast to arrive on Tuesday (Sep 15) at 3PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Wednesday (Sep 16) at 12AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Wed 16th Sep) | 6ft (1.8m) 15s |
| Best Surf | 12PM (Wed 16th Sep) | 6ft (1.8m) 15s |
| Most Powerful | 3PM (Tue 15th Sep) | 7ft (2.1m) 14s |
Table - best surf conditions forecast for The Island over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s coming down the line for us.
We’ve got a bit of a wait, to be honest. The next few days are looking pretty ordinary – messy winds and so-so energy. The first real chance to get excited about won't hit us until Tuesday, September 16th, and even that morning is a bit conditional. The real standout, the one you want to circle on the calendar, is shaping up for Tuesday, September 22nd. That morning looks absolutely firing for the crew who know what they’re doing.
Let’s walk through it.
Saturday the 12th and Sunday the 13th are write-offs. Onshore winds and poor conditions mean there’s nothing worth paddling out for. Monday the 14th isn’t much better with a light cross-onshore breeze making things a bit bumpy.
Now, Tuesday the 15th of September brings a pulse of energy, with the combined swell energy ramping up to 1326. The morning sees a clean 6ft SW swell, but it’s blowing a cross-off at 19 mph. It’s rideable, but it feels like a warm-up. The afternoon gets bigger at 7ft SW, but the wind picks up to 22 mph. It’s still clean, but it’s a handful.
Wednesday the 16th of September is your first decent chance. The morning has that magic combination: a clean 6ft SW groundswell with a 15-second period, and a fresh offshore breeze coming out of the east at 19 mph. That’s proper offshore, and it’ll be grooming The Island (reef) beautifully. Combined energy is a solid 1581. This is the moment.
Thursday the 17th of September afternoon goes completely glassy – zero wind, with a little 3ft SW swell. It’s small, but if you’ve got a log, that glassy window will be pure bliss. Friday the 18th and Saturday the 19th are back to poor conditions with strong, messy winds. Just leave it.
Sunday the 20th of September sees a new pulse – clean again with a 4ft SW swell at 16 seconds, but the energy is up there at 1532. Worth a look if you’re keen. Monday the 21st is similar, holding at 7 to 7ft SW, clean with a cross-off breeze.
Then we get to the main event. Tuesday the 22nd of September morning. This is the one. The Island is looking at a solid 8ft SW groundswell, with a very long 16-second period, and a gentle offshore breeze from the east at just 9 mph. The combined energy is a massive 3145. That’s not just surf, that's serious, powerful, deep water energy hitting a reef. This is strictly for experienced surfers only – anything over 8ft is expert territory. The lineup might have a few out, but the quality on offer is unreal.
The rest of that week drops off a bit. Wednesday the 23rd gets lumpy, Thursday the 24th is cross-shore, but we get a little reprieve on Friday the 25th of September with a clean, gentle offshore and a small 3ft SW swell. It’s small, but clean. Saturday the 26th has a bit more size at 5ft, clean again. Sunday the 27th gets blown out with a near gale.
So, to wrap it up: ride Wednesday the 16th morning for a great session, but the one to block out is Tuesday the 22nd of September morning. That is the best of the 16 days by a long shot.
Rusty.
Short Range ForecastSome drizzle, heaviest during Sat night. Warm (max 26°C on Sat afternoon, min 12°C on Mon night). Winds decreasing (fresh winds from the NNE on Sat night, light winds from the SSW by Mon morning). | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Thu afternoon, min 8°C on Tue night). Winds decreasing (strong winds from the SSE on Tue afternoon, calm by Thu afternoon). | ||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | |||||||||||||||
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) | SW 15 | SW 16 | SW 15 | WSW 16 | WSW 16 | SW 15 | SW 14 | SW 14 | SW 16 | SW 15 | SW 14 | SSW 14 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 13 | SW 16 | SW 15 | SW 15 |
Wave Graph | |||||||||||||||||||||
525 | 793 | 360 | 864 | 945 | 360 | 573 | 456 | 728 | 1326 | 1752 | 1667 | 1563 | 1237 | 1068 | 581 | 377 | 246 | 248 | 134 | 209 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | on | on | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | off | cross-off | off | cross-off | glassy | cross-off | cross | cross | cross-off |
High Tide | 1:05PM0.00m | 2:42PM0.00m | 4:38PM0.00m | 6:53PM0.00m | 9:04PM0.00m | 10:53PM0.00m | 00:26AM0.00m | ||||||||||||||
Low Tide | 1:52AM-0.00m | 3:38AM-0.00m | 5:44AM-0.00m | 8:00AM-0.00m | 10:01AM-0.00m | 11:41AM-0.00m | |||||||||||||||
6:37 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — | 6:31 | — | — | 6:31 | — | — | 6:28 | — | — | |
— | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:23 | — | — | 6:24 | — | — | 6:24 | — | — | 6:25 | — | |
mm | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 26 | 25 | 15 | 15 | 13 | 14 | 15 | 14 | 12 | 12 | 10 | 13 | 17 | 12 | 17 | 19 | 19 | 20 | 25 | 25 |
Feels °C | 16 | 22 | 20 | 10 | 10 | 11 | 12 | 13 | 11 | 6 | 5 | 2 | 7 | 10 | 4 | 13 | 17 | 14 | 13 | 19 | 18 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 16 | SW 15 | S 17 | S 16 | SW 15 | SW 14 | SW 14 | SW 16 | SW 15 | SW 14 | SSW 14 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 13 | SW 16 | SW 15 | SW 15 |
525 | 793 | 360 | 6 | 5 | 360 | 573 | 456 | 728 | 1326 | 1752 | 1667 | 1563 | 1237 | 1068 | 581 | 377 | 246 | 248 | 134 | 209 | |
Swell 2 Height (m) Direction Period (s) | SW 18 | S 18 | SW 18 | — | — | S 16 | SW 19 | SW 18 | — | — | — | — | S 15 | — | SSE 16 | S 15 | S 14 | S 13 | S 19 | SW 18 | WNW 5 |
318 | 6 | 258 | — | — | 5 | 125 | 154 | — | — | — | — | 18 | — | 25 | 4 | 4 | 3 | 7 | 108 | 3 | |
Swell 3 Height (m) Direction Period (s) | — | — | S 18 | — | — | — | S 14 | — | — | — | — | — | — | — | — | — | — | — | — | S 18 | S 16 |
— | — | 6 | — | — | — | 4 | — | — | — | — | — | — | — | — | — | — | — | — | 6 | 5 | |
Wind waves Height (m) Direction Period (s) | N 4 | N 4 | N 4 | WSW 16 | WSW 16 | SW 7 | — | — | — | S 5 | SSE 5 | SE 5 | ESE 5 | SSE 15 | ESE 5 | NE 4 | — | NNE 3 | N 4 | NNW 4 | N 3 |
10 | 7 | 13 | 864 | 945 | 67 | — | — | — | 36 | 52 | 76 | 55 | 23 | 28 | 8 | — | 3 | 18 | 5 | 7 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 24 | 24 | 249 | 352 | 724 | 495 | 29 | 495 | 29 | 337 | 337 | 398 | 210 | 29 | 51 | 133 | 0 | 133 | 249 | 250 | 249 |
Best forecast wave conditions in Eyre Peninsula | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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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.










