Surf Forecasts:
The Island surf forecast from 11 Aug 2026:
- Best quality surf: Thursday 13 Aug, 9AM (local time) - 7.5ft (2.3m), 16s period, SW swell with glassy winds.
- Most powerful swell: Wednesday 12 Aug, 6PM (local time) - 10ft (3.0m), 16s period, SW swell with 5,233 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 9AM (local time) - 7.5ft (2.3m), 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 Thursday (Aug 13) at 9AM. The primary swell is predicted to be 2.3m and 16s period with a secondary swell of 0.2m and 16s. 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 3.0m 16s and forecast to arrive on Wednesday (Aug 12) at 6PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Tuesday (Aug 18) at 6AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Thu 13th Aug) | 7.5ft (2.3m) 16s |
| Best Surf | 9AM (Thu 13th Aug) | 7.5ft (2.3m) 16s |
| Most Powerful | 6PM (Wed 12th Aug) | 10ft (3.0m) 16s |
Table - best surf conditions forecast for The Island over the next 16 days.
The Lowdown
Alright folks, Rusty again, in the units you measure your truck bed by.
The Island is starting off rough. Tuesday the 11th and Wednesday the 12th are total washouts with strong winds and messy, blown-out waves. The swell is over 8ft, but it's ugly. No reason to get wet.
The first real moment of magic hits Thursday the 13th. The wind goes glassy calm in the morning. Swell is a solid 8ft from the SW, with a long 16-second period—that’s proper groundswell energy. The combined oomph is a stonking 2694, which is a powerful pulse. This is the standout for the whole outlook, but it's for experienced surfers only. That’s heavy, hollow reef stuff. The water temp is about 59°, which is normal for now.
Friday the 14th and Saturday the 15th are also excellent. Friday morning: clean, cross-off breeze, a 8ft SW swell with a 17-second period (combined energy 2931). Picture-perfect reef conditions. Saturday the 15th brings moderate offshore breezes and a 7ft SW swell. Clean, lined-up, and powerful. So Thursday, Friday, and Saturday mornings are your three best bets.
After that, it mellows out nicely. Sunday the 16th and Monday the 17th serve up clean, smaller waves from 4ft to 5ft. Easy-going, good for a fun session.
Then there’s a lull. Tuesday the 18th and Wednesday the 19th are back to poor winds and weak surf. The quality returns on Thursday the 20th and Friday the 21st—clean 5ft to 6ft SW swells with gentle offshores. That’s a good run in the second week, but size-wise it’s not the same as that Thursday the 13th peak.
From Saturday the 22nd on, it’s mostly small, messy, and wind-affected right through to the end of the window. A fresh pulse shows around the 26th, but the wind is ugly again.
Best of the best: Thursday the 13th, dawn patrol. Glass, strong 8ft SW groundswell, big period. That is the one to circle. Friday the 14th and Saturday the 15th mornings are nearly as good. In the second week, aim for Thursday the 20th or Friday the 21st for cleaner, smaller fun.
Rusty out.
Short Range ForecastLight rain (total 4mm), mostly falling on Tue night. Very mild (max 16°C on Tue afternoon, min 12°C on Tue night). Winds decreasing (strong winds from the SW on Tue night, calm by Thu morning). | Days 4-6 Weather SummaryMostly dry. Very mild (max 15°C on Fri morning, min 11°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | |||||||||||||||
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 14 | WSW 15 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 16 | SW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1016 | 1307 | 3882 | 3683 | 3294 | 2702 | 2668 | 2065 | 2012 | 2901 | 2373 | 1968 | 1919 | 1513 | 1123 | 813 | 736 | 434 | 350 | 728 | 614 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | cross-on | cross | cross-off | cross-off | cross-off | off | cross-off | off | off | cross-off | off | off | cross-off | off |
High Tide | 8:31AM0.00m | 10:29AM0.00m | 12:16PM0.00m | 1:53PM0.00m | 3:27PM0.00m | 5:12PM0.00m | |||||||||||||||
Low Tide | 7:32PM-0.00m | 9:31PM-0.00m | 11:25PM-0.00m | 1:05AM-0.00m | 2:40AM-0.00m | 4:17AM-0.00m | |||||||||||||||
 |  |  | | |  |  | |  | | | | | | | | | | | |  | |
 | 7:16 | — | — | 7:15 | — | — | 7:13 | — | — | 7:13 | — | — | 7:11 | — | — | 7:11 | — | — | 7:09 | — | — |
 | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:02 | — | — | 6:04 | — | — | 6:04 | — | — | 6:05 | — |
mm | — | — | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 16 | 13 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 15 | 14 | 14 | 15 | 17 |
Feels °C | 7 | 8 | 3 | 8 | 9 | 11 | 13 | 13 | 13 | 12 | 12 | 11 | 9 | 9 | 9 | 9 | 11 | 8 | 12 | 12 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 18 | — | S 17 | S 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 16 | SW 15 |
| kJ | 1016 | 325 | — | 22 | 23 | 2702 | 2668 | 2065 | 2012 | 2901 | 2373 | 1968 | 1919 | 1513 | 1123 | 813 | 736 | 434 | 350 | 728 | 614 |
Swell 2 Height (m) Direction Period (s) | S 15 | — | — | — | — | SSE 17 | SSE 16 | SSE 16 | SSE 16 | SSE 17 | SSE 16 | SSE 16 | SSE 16 | S 16 | SE 15 | S 15 | S 15 | S 14 | SW 17 | SW 22 | SW 19 |
| kJ | 5 | — | — | — | — | 27 | 26 | 25 | 26 | 30 | 26 | 26 | 25 | 20 | 9 | 4 | 4 | 4 | 177 | 73 | 436 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 24 | S 16 | S 19 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 22 | 5 | 7 |
Wind waves Height (m) Direction Period (s) | NW 5 | WSW 15 | SW 17 | SW 17 | SW 16 | — | — | — | — | — | — | — | — | — | — | — | — | SE 4 | — | — | — |
| kJ | 59 | 1307 | 3882 | 3683 | 3294 | — | — | — | — | — | — | — | — | — | — | — | — | 5 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 815 | 891 | 495 | 1065 | 1065 | 495 | 0 | 495 | 29 | 0 | 0 | 51 | 0 | 51 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Eyre Peninsula | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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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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