Surf Forecasts:
The Island surf forecast from 17 Aug 2026:
- Best quality surf: Monday 17 Aug, 9PM (local time) - 3.5ft (1.1m), 15s period, SW swell with cross-offshore winds.
- Most powerful swell: Friday 21 Aug, 9AM (local time) - 6ft (1.8m), 17s period, SW swell with 1,949 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 6PM (local time) - 4.5ft (1.3m), 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 Monday (Aug 17) at 6PM. The primary swell is predicted to be 1.3m and 15s period with a secondary swell of 0.6m and 21s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at The Island in the next 16 days are 1.8m 17s and forecast to arrive on Friday (Aug 21) at 9AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Tuesday (Aug 18) at 3PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Mon 17th Aug) | 4.5ft (1.3m) 15s |
| Best Surf | 9PM (Mon 17th Aug) | 3.5ft (1.1m) 15s |
| Most Powerful | 9AM (Fri 21st Aug) | 6ft (1.8m) 17s |
Table - best surf conditions forecast for The Island over the next 16 days.
The Lowdown
Alright, Rusty here with the lowdown for The Island. We’ve got a reef break that’s consistent and exposed to the SW, and it’s been holding some decent groundswell. Water temp is 59°F, which is pretty normal for this time of year.
We’re starting off on Monday with a 3-foot SW groundswell, 16-second period, and the combined energy is moderate at 709. With an offshore breeze from the east at 12 mph, it’s clean and fun. Monday afternoon turns glassy, and the swell pushes to 4 ft – that’s a clean, solid session.
Tuesday the wind picks up, and it gets a bit cross-off, but the swell holds. Not the best, and Tuesday afternoon gets lumpy. Wednesday is a total washout with onshore winds, don’t bother.
Thursday morning picks up again – 5 ft SW, 16-second period, light cross-off wind. Clean, but not the big one. The true standout is Friday, August 21st. Clear skies, light offshore wind, and a 6 ft SW groundswell with a 17-second period. Combined energy is strong at 2099. That’s a proper session – powerful, clean, and for experienced surfers only.
Saturday the 22nd holds at 6 ft, still offshore, still clean. Sunday the 23rd is glassy on 5 ft – a real gem of a morning.
After that, it drops. Monday the 24th is small and weak. Tuesday the 25th is tiny – 2 ft to 3 ft – but still offshore if you need a fix. Wednesday the 26th is a no-go with strong winds.
Look ahead to Friday, August 28th. That’s another standout: 8 ft SW, 15-second period, light offshore wind, and combined energy at 2281. That’s big, clean, and for experts only. Saturday the 29th is also solid at 6 ft to 7 ft with clean conditions.
Sunday the 30th afternoon goes glassy with 4 ft swell – a sneaky good moment. The last days of August and into September get messy with cross-shore winds, so the first week is where it’s at.
Best on offer: Friday August 21st morning, and Friday August 28th morning. Crowds can show up here sometimes, so get in early.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Tue afternoon, min 13°C on Mon night). Winds increasing (calm on Mon afternoon, strong winds from the NNE by Tue morning). | Days 5-7 Weather SummaryMostly dry. Very mild (max 16°C on Sun morning, min 12°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Mon 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||
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 16 | SW 15 | SW 17 | SW 17 | WSW 16 | SW 15 | WSW 15 | SW 14 | SW 16 | SW 16 | SW 15 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 16 | SW 15 |
Wave Graph  | ||||||||||||||||||||
 kJ | 875 | 543 | 861 | 465 | 1011 | 447 | 987 | 877 | 989 | 1014 | 1135 | 1949 | 1591 | 1664 | 1314 | 1262 | 899 | 765 | 1096 | 614 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | cross-off | cross | on | on | on | on | cross-off | cross-on | cross-off | glassy | cross-on | cross-on | cross-on | cross-on | off | cross-off | glassy | off |
High Tide | 9:38PM0.00m | 11:43PM0.00m | 1:24AM0.00m | 2:52AM0.00m | ||||||||||||||||
Low Tide | 6:13AM-0.00m | 8:29AM-0.00m | 10:44AM-0.00m | 12:36PM-0.00m | 2:09PM-0.00m | 3:36PM-0.00m | ||||||||||||||
 |  | | | | |  |  | | | |  | | | | | | | |  | |
 | — | — | 7:07 | — | — | 7:07 | — | — | 7:05 | — | — | 7:05 | — | — | 7:03 | — | — | 7:03 | — | — |
 | 6:05 | — | — | 6:06 | — | — | 6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 16 | 20 | 14 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 16 | 17 | 16 |
Feels °C | 13 | 11 | 8 | 14 | 9 | 10 | 10 | 11 | 13 | 12 | 12 | 12 | 11 | 13 | 13 | 12 | 11 | 13 | 16 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 17 | SW 17 | S 17 | SW 15 | WSW 15 | SW 14 | SW 16 | SW 16 | SW 15 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 16 | SW 15 |
| kJ | 875 | 543 | 861 | 465 | 5 | 447 | 987 | 877 | 989 | 1014 | 1135 | 1949 | 1591 | 1664 | 1314 | 1262 | 899 | 765 | 1096 | 614 |
Swell 2 Height (m) Direction Period (s) | SW 22 | SW 19 | S 18 | S 18 | — | — | SW 19 | SW 18 | S 17 | SW 9 | SW 19 | S 17 | S 17 | S 16 | SW 24 | SW 21 | SW 20 | SW 18 | S 16 | WSW 21 |
| kJ | 165 | 441 | 6 | 6 | — | — | 181 | 258 | 6 | 61 | 602 | 6 | 6 | 5 | 22 | 162 | 306 | 432 | 5 | 45 |
Swell 3 Height (m) Direction Period (s) | S 16 | S 20 | — | — | — | — | SW 20 | S 14 | — | S 16 | S 16 | — | — | — | S 16 | S 16 | S 15 | S 18 | — | S 16 |
| kJ | 5 | 7 | — | — | — | — | 186 | 4 | — | 5 | 5 | — | — | — | 5 | 5 | 4 | 6 | — | 5 |
Wind waves Height (m) Direction Period (s) | — | — | NNE 4 | NNE 4 | WSW 16 | WSW 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 20 | 29 | 1011 | 168 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 133 | 249 | 249 | 496 | 499 | 1073 | 154 | 0 | 154 | 0 | 0 | 154 | 154 | 13 | 479 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Eyre Peninsula | ||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our The Island surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
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