Surf Forecasts:
The Island surf forecast from 28 Aug 2026:
- Best quality surf: Monday 31 Aug, 12AM (local time) - 5ft (1.5m), 17s period, SW swell with offshore winds.
- Most powerful swell: Wednesday 2 Sep, 9PM (local time) - 7.5ft (2.3m), 14s period, SW swell with 2,056 kJ wave energy.
- Next surfable swell (1★+): Saturday 29 Aug, 3AM (local time) - 4ft (1.2m), 14s 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 Saturday (Aug 29) at 3AM. The primary swell is predicted to be 1.2m and 14s period. 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 2.3m 14s and forecast to arrive on Wednesday (Sep 02) at 9PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Tuesday (Sep 01) at 3AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Sat 29th Aug) | 4ft (1.2m) 14s |
| Best Surf | 12AM (Mon 31st Aug) | 5ft (1.5m) 17s |
| Most Powerful | 9PM (Wed 2nd Sep) | 7.5ft (2.3m) 14s |
Table - best surf conditions forecast for The Island over the next 16 days.
The Lowdown
Alright, Rusty here again, now in feet and miles per hour. Let's break down the same swell window for The Island.
We kick off Saturday the 29th morning with a clean 4ft SW groundswell at 14 seconds. A solid offshore breeze from the east at 12 mph is grooming the reef. The water temp is about normal for the time of year. The combined wave energy is at 465, so a decent pulse. The Island is an exposed reef that really likes this direction, so we get good shape. Crowds can be a thing sometimes, but on a day like this, it’s worth it.
Sunday the 30th morning eases to 3ft with a 12-second period, but that offshore wind holds. Clean. The afternoon turns interesting – size bumps to 4ft with a very long 19-second period, and the wind goes cross-offshore. The energy jumps to 1130. That long period on the reef will produce heavy, lined-up sets.
Monday the 31st pushes up to around 6-6ft with that 18-19 second period holding. The morning wind is cross-offshore so it’s clean, but the afternoon wind goes cross-shore. Energy is strong at over 1900. Still quality waves for those who can handle it.
Tuesday the 1st and Wednesday the 2nd of September are a mess. Onshore winds and chop. Not worth a paddle.
Thursday the 3rd through Saturday the 5th sees swell in the 5ft to 7ft range, but constant onshore or cross-onshore wind. Choppy and bumpy. Saturday afternoon is a blowout with a near gale.
Sunday the 6th and Monday the 7th has a massive jump – 10ft on Monday morning from the SSW with a 13-second period. That’s expert-only territory, and combined with a strong cross-shore wind, the quality is poor.
Now for the real highlights. Thursday the 10th of September morning is glassy. Zero wind. A solid 5ft SW groundswell with a 17-second period. Energy is strong at 1288. This is a dream session for experienced surfers. Clean, long-period reef waves. The standout of the entire outlook.
Then Saturday the 12th of September morning delivers again. A strong 6ft SW groundswell with a 17-second period, a light offshore from the NE at 6 mph, and monster energy at 2171. That is a powerful groundswell hitting an exposed reef. Big sets, long lulls. Another one to circle on the calendar.
The run finishes Sunday the 13th with a 5ft, 16-second period swell but a cross-shore wind, so it’s more ordinary.
Rusty out.
Short Range ForecastMostly dry. Warm (max 22°C on Fri night, min 16°C on Sun morning). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 21°C on Mon night, min 12°C on Tue night). Winds decreasing (fresh winds from the N on Tue morning, light winds from the W by Wed morning). | ||||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | ||||||||||||||
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 | SW 14 | SW 13 | SW 13 | SW 19 | SW 19 | SW 17 | SW 19 | SW 18 | SW 16 | SW 16 | SW 17 | SW 16 | SW 16 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 |
Wave Graph  | |||||||||||||||||||
 kJ | 676 | 440 | 290 | 196 | 248 | 1123 | 1267 | 1975 | 1880 | 1210 | 886 | 822 | 1297 | 853 | 1196 | 1163 | 1115 | 990 | 947 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | off | off | cross-off | off | cross-off | cross | cross-off | cross | on | cross-on | on | on | on | cross-on | on | cross-on |
High Tide | 1:57PM0.00m | 3:31PM0.00m | 5:12PM0.00m | 7:05PM0.00m | 9:06PM0.00m | 11:01PM0.00m | |||||||||||||
Low Tide | 1:09AM-0.00m | 2:44AM-0.00m | 4:20AM-0.00m | 6:07AM-0.00m | 8:05AM-0.00m | 10:05AM-0.00m | |||||||||||||
 |  | |  | | | | | | |  | |  |  | | | | | | |
 | — | 6:54 | — | — | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — |
 | 6:12 | — | 6:13 | — | — | 6:14 | — | — | 6:14 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 20 | 22 | 20 | 19 | 20 | 19 | 19 | 22 | 21 | 21 | 19 | 14 | 13 | 13 | 14 | 15 | 15 | 15 |
Feels °C | 18 | 17 | 19 | 15 | 17 | 17 | 13 | 14 | 20 | 16 | 14 | 13 | 10 | 9 | 8 | 9 | 12 | 12 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 19 | SW 17 | SW 19 | SW 18 | SW 16 | SW 16 | SW 17 | S 17 | SW 16 | S 16 | SW 14 | SW 14 | SW 14 | SW 14 |
| kJ | 676 | 440 | 290 | 196 | 248 | 1123 | 1267 | 1975 | 1880 | 1210 | 886 | 822 | 6 | 853 | 5 | 1163 | 1115 | 990 | 947 |
Swell 2 Height (m) Direction Period (s) | S 16 | SW 23 | SW 20 | SW 21 | SW 19 | S 19 | SW 21 | SSE 19 | S 18 | S 16 | S 16 | SW 18 | — | S 16 | — | S 15 | S 15 | S 15 | S 14 |
| kJ | 5 | 21 | 15 | 160 | 236 | 7 | 282 | 36 | 24 | 5 | 5 | 686 | — | 5 | — | 4 | 4 | 4 | 4 |
Swell 3 Height (m) Direction Period (s) | — | S 14 | SW 23 | — | S 20 | — | S 17 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 4 | 21 | — | 7 | — | 6 | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | SE 4 | ESE 4 | — | ESE 4 | NNE 4 | — | — | NNW 5 | NW 4 | SW 16 | SW 6 | SW 14 | — | — | — | — |
| kJ | — | — | — | 10 | 5 | — | 12 | 8 | — | — | 45 | 16 | 1297 | 33 | 1196 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 133 | 0 | 24 | 13 | 24 | 1073 | 346 | 495 | 356 | 356 | 154 | 154 | 24 | 1026 |
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.
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