Surf Forecasts:
The Island surf forecast from 6 Aug 2026:
- Most powerful swell: Wednesday 12 Aug, 9AM (local time) - 10ft (3.0m), 19s period, SW swell with 5,557 kJ wave energy.
Best Forecast Surf Conditions for The Island this week:
The most powerful waves expected at The Island in the next 16 days are 3.0m 19s and forecast to arrive on Wednesday (Aug 12) at 9AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Friday (Aug 07) at 6AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 9AM (Wed 12th Aug) | 10ft (3.0m) 19s |
Table - best surf conditions forecast for The Island over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a look at what’s shaping up for The Island. We’ve got a bit of a mixed bag ahead, with some solid groundswell potential but a whole lot of wind to deal with first.
The main event here is a really long run of powerful, long-period SW groundswells. The combined energy is massive early on, hitting 1230 (moderate) on Thursday the 6th, and then pumping up to a strong 1698 on Friday the 7th. But the problem is the wind. We’ve got fresh cross-shore breezes and lumpy conditions through the first weekend, making it pretty messy. Thursday the 6th afternoon is the best of the first few days, with a clean 5ft SW swell and a 16-second period, but the light S cross-shore will keep it from being perfect. The rest of that weekend, into Monday the 10th, is basically blown out with onshore gales and rain. The swell gets huge – over 10ft on Sunday the 9th – but it’s just not surfable with a 40 mph W gale.
The real standout window opens up on Saturday, August 15th. That morning, we get a clean 6ft SW swell with a 16-second period, and the wind swings to a light E offshore. That’s the one. The water temp is right around 60°, which is about average for this time of year, so the 0.5° anomaly is nothing to worry about. The Island is an exposed reef, consistent, and an advanced wave, so this is for experienced surfers. The swell direction matches the optimum SW, and the offshore wind will make it clean. Crowds are possible. This is the pick of the forecast.
After that, the week of the 16th through the 18th sees the swell drop off, but conditions stay clean with light offshore or cross-off winds. On Monday the 17th, we get a 4ft SW swell with a 16-second period, and Tuesday the 18th has a 2ft swell with a very long 19-second period. These are smaller, but the glassy conditions will make them fun for the crew looking for a easier paddle.
The long-range stuff around the 19th and 20th is more uncertain. We get a fresh bump in swell back to 5ft to 6ft, but the wind starts to get tricky again with cross and onshore directions. It’s promising, but don’t lock in plans yet.
So, bottom line: Don’t bother with the first week unless you’re a kite surfer – the onshore gales and big swell will be more their jam. The absolute standout is Saturday, August 15th. Get on it.
Rusty.
Short Range ForecastHeavy rain (total 22mm), heaviest during Sat night. Very mild (max 18°C on Fri morning, min 10°C on Sun afternoon). Winds increasing (light winds from the ESE on Thu night, gales from the WSW by Sun morning). | Days 5-7 Weather SummaryLight rain (total 5mm), mostly falling on Tue afternoon. Very mild (max 16°C on Tue morning, min 12°C on Tue afternoon). Winds increasing (moderate winds from the W on Mon morning, near gales from the NW by Tue morning). | ||||||||||||||||||
Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | ||||||||||||||
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 16 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | WSW 16 | SW 13 | SW 17 | SW 17 | WSW 16 | SW 15 | SW 14 | W 10 | SW 12 | SW 19 | SW 17 | SW 16 |
Wave Graph  | |||||||||||||||||||
 kJ | 1904 | 1750 | 1399 | 1256 | 1164 | 1140 | 821 | 3868 | 3029 | 4484 | 3768 | 3413 | 1581 | 658 | 1493 | 2483 | 5557 | 4589 | 3726 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross | cross | cross | cross | cross-on | on | cross-on | on | cross-on | cross | cross | cross-on | cross-on | on | cross-on | cross-on |
High Tide | 11:43PM0.00m | 1:32AM0.00m | 3:11AM0.00m | 4:48AM0.00m | 6:33AM0.00m | 8:31AM0.00m | |||||||||||||
Low Tide | 12:40PM-0.00m | 2:23PM-0.00m | 4:00PM-0.00m | 5:39PM-0.00m | 7:32PM-0.00m | 9:31PM-0.00m | |||||||||||||
 |  |  |  | | | |  | |  | | | |  | | | | | | |
 | — | 7:18 | — | — | 7:18 | — | — | 7:18 | — | — | 7:16 | — | — | 7:16 | — | — | 7:15 | — | — |
 | — | — | 5:58 | — | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — |
mm | — | — | 2 | 3 | 1 | 1 | 7 | 5 | 3 | — | — | — | — | — | 3 | 2 | — | — | — |
Temp °C | 15 | 18 | 15 | 15 | 17 | 18 | 16 | 12 | 12 | 13 | 14 | 13 | 14 | 16 | 13 | 14 | 14 | 15 | 14 |
Feels °C | 8 | 11 | 9 | 11 | 13 | 14 | 13 | 0 | -1 | 2 | 8 | 8 | 9 | 5 | 3 | 5 | 5 | 8 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | — | — | — | SW 17 | WSW 16 | SW 15 | SW 14 | — | S 17 | — | — | SSE 17 |
| kJ | 1904 | 1750 | 1399 | 1256 | 1164 | 1140 | 821 | — | — | — | 3768 | 3413 | 1581 | 658 | — | 6 | — | — | 28 |
Swell 2 Height (m) Direction Period (s) | S 17 | S 16 | S 18 | S 17 | S 16 | S 16 | S 15 | — | — | — | S 18 | S 17 | S 16 | S 15 | — | — | — | — | — |
| kJ | 6 | 5 | 6 | 6 | 5 | 5 | 4 | — | — | — | 7 | 6 | 5 | 5 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | N 4 | NNW 5 | N 4 | NW 4 | WNW 4 | NW 4 | WSW 16 | SW 13 | SW 17 | — | — | NNW 4 | NW 6 | W 10 | SW 12 | SW 19 | SW 17 | SW 16 |
| kJ | — | 21 | 55 | 20 | 22 | 8 | 24 | 3868 | 3029 | 4484 | — | — | 44 | 145 | 1493 | 2483 | 5557 | 4589 | 3726 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 13 | 249 | 154 | 249 | 24 | 24 | 249 | 831 | 779 | 897 | 1306 | 356 | 356 | 1361 | 1361 | 1373 | 1428 | 1428 | 495 |
Best forecast wave conditions in Eyre Peninsula | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
Header Global | |||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
FREE! Surf-Forecast.com widget for your website
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.
Nearest