Surf Forecasts:
The Island surf forecast from 25 Aug 2026:
- Best quality surf: Thursday 27 Aug, 6PM (local time) - 6ft (1.8m), 18s period, SW swell with cross-offshore winds.
- Most powerful swell: Friday 28 Aug, 12AM (local time) - 6ft (1.9m), 18s period, SW swell with 2,216 kJ wave energy.
- Next surfable swell (1★+): Wednesday 26 Aug, 6AM (local time) - 4.5ft (1.3m), 13s 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 (Aug 26) at 6AM. The primary swell is predicted to be 1.3m and 13s period with a secondary swell of 0.3m and 18s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at The Island in the next 16 days are 1.9m 18s and forecast to arrive on Friday (Aug 28) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Saturday (Aug 29) at 9PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Wed 26th Aug) | 4.5ft (1.3m) 13s |
| Best Surf | 6PM (Thu 27th Aug) | 6ft (1.8m) 18s |
| Most Powerful | 12AM (Fri 28th Aug) | 6ft (1.9m) 18s |
Table - best surf conditions forecast for The Island over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s break down what’s in store for The Island over the next couple of weeks.
We’re starting off a bit quiet, but there’s hope. The first real chance to get wet comes Wednesday morning, 26 August, with a clean 4ft SW groundswell, period a solid 13 seconds. The wind’s a light cross-off from the NNE, so the surface is looking tidy. The energy’s moderate at 556 – not massive, but perfectly surfable. Water temp is about normal for this time of year.
Thursday afternoon, 27 August, the swell drops to 4ft, but the period stretches to 19 seconds – that’s a long-running groundswell. The energy climbs to 1423, which is strong, but the wind goes cross-shore, so there’s a bit of a cross-chop. Still, that long period will give the waves some real push and shape, especially on the reef. For the experienced lot, it’s worth a paddle.
Now, the real standout. Saturday morning, 5 September. The swell is a solid 6ft out of the SW, period 15 seconds, and the energy is pumping at 2481 – that’s strong-to-very-strong. But the best part? The wind is glass. Dead calm. That reef will be glassy perfection, with clean, lined-up sets. This is advanced territory at that size, but if you’re up for it, this is the best you’ll see. Crowds are sometimes a thing here, but on a morning like that, you’ll want to be first in the water.
Other good shouts: Friday, 4 September, with 6ft SW swell and a light cross-off from the NE, clean and powerful at 1540 energy. Tuesday, 8 September, also offers 6ft SW swell, 17 seconds period, with a clean cross-off from the SE – energy at 1819, real punchy. Thursday, 10 September, has a glassy 5ft SW swell, clean and glassy again.
There’s a rough patch early September – Tuesday the 1st and Wednesday the 2nd are pretty blown out with strong onshore winds. Thursday the 3rd is marginal. But after that, it turns around nicely.
The second week has some decent pulses, but that Saturday, 5 September morning is the one to circle. Keep an eye on it.
Rusty, signing off.
Short Range ForecastMostly dry. Warm (max 22°C on Thu afternoon, min 10°C on Wed morning). Winds increasing (calm on Wed afternoon, fresh winds from the N by Thu morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Mon afternoon, min 15°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | ||||||||||||||
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 13 | SW 13 | SW 14 | SW 14 | SW 19 | SW 18 | SW 16 | SW 16 | SW 14 | SW 14 | SW 13 | SW 13 | SW 19 | SW 19 | SW 18 | SW 17 | SW 17 | SW 16 |
Wave Graph  | |||||||||||||||||||
 kJ | 813 | 552 | 363 | 350 | 466 | 817 | 2216 | 1611 | 1194 | 746 | 440 | 290 | 196 | 303 | 994 | 1591 | 1858 | 1519 | 1129 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | cross-on | cross-off | cross | cross | cross-off | cross | cross | off | off | cross-off | off | off | cross-off | off | cross-off | cross | cross-off |
High Tide | 10:24AM0.00m | 12:18PM0.00m | 1:57PM0.00m | 3:31PM0.00m | 5:12PM0.00m | ||||||||||||||
Low Tide | 9:19PM-0.00m | 1:09AM-0.00m | 2:44AM-0.00m | 4:20AM-0.00m | |||||||||||||||
 |  | | | |  |  |  | |  | | | | | | | | | | |
 | — | 6:58 | — | — | 6:58 | — | — | 6:56 | — | — | 6:54 | — | — | 6:54 | — | — | 6:52 | — | — |
 | 6:09 | — | 6:10 | — | — | 6:12 | — | — | 6:12 | — | — | 6:13 | — | — | 6:14 | — | — | 6:14 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 13 | 16 | 16 | 18 | 22 | 21 | 19 | 21 | 20 | 19 | 21 | 18 | 18 | 19 | 19 | 19 | 22 | 22 |
Feels °C | 11 | 9 | 14 | 12 | 12 | 19 | 16 | 14 | 18 | 15 | 16 | 17 | 12 | 16 | 14 | 14 | 14 | 19 | 17 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 13 | SW 13 | SW 14 | SW 14 | SW 14 | SW 18 | SW 16 | SW 16 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 19 | SW 18 | SW 17 | SW 17 | SW 16 |
| kJ | 813 | 552 | 363 | 350 | 466 | 606 | 2216 | 1611 | 1194 | 746 | 440 | 290 | 196 | 141 | 994 | 1591 | 1858 | 1519 | 1129 |
Swell 2 Height (m) Direction Period (s) | S 14 | S 13 | SW 16 | SW 23 | SW 20 | SW 19 | S 18 | S 17 | S 16 | S 16 | SW 23 | SW 23 | SW 21 | SW 19 | — | S 18 | SSE 17 | S 17 | SE 16 |
| kJ | 4 | 4 | 42 | 21 | 264 | 817 | 6 | 6 | 5 | 5 | 21 | 21 | 160 | 303 | — | 25 | 29 | 23 | 10 |
Swell 3 Height (m) Direction Period (s) | — | — | S 16 | S 16 | S 15 | — | — | — | — | — | S 14 | SW 20 | — | S 20 | — | — | — | — | — |
| kJ | — | — | 5 | 5 | 4 | — | — | — | — | — | 4 | 15 | — | 7 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | NE 3 | N 4 | — | — | — | — | — | — | — | SE 4 | SE 4 | S 19 | SE 4 | — | — | — |
| kJ | — | — | — | 2 | 21 | — | — | — | — | — | — | — | 14 | 9 | 7 | 19 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 24 | 24 | 13 | 249 | 13 | 13 | 24 | 13 | 0 | 0 | 0 | 0 | 0 | 133 | 0 | 24 | 24 | 154 |
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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