Surf Forecasts:
The Island surf forecast from 31 Aug 2026:
- Best quality surf: Saturday 5 Sep, 6PM (local time) - 8ft (2.5m), 16s period, SW swell with glassy winds.
- Most powerful swell: Saturday 5 Sep, 6AM (local time) - 11ft (3.5m), 15s period, SW swell with 4,553 kJ wave energy.
- Next surfable swell (1★+): Monday 31 Aug, 6PM (local time) - 5ft (1.6m), 17s 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 31) at 6PM. The primary swell is predicted to be 1.6m and 17s period with a secondary swell of 0.2m and 18s. 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 3.5m 15s and forecast to arrive on Saturday (Sep 05) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Sunday (Sep 06) at 9AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Mon 31st Aug) | 5ft (1.6m) 17s |
| Best Surf | 6PM (Sat 5th Sep) | 8ft (2.5m) 16s |
| Most Powerful | 6AM (Sat 5th Sep) | 11ft (3.5m) 15s |
Table - best surf conditions forecast for The Island over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's get straight into it. The Island is the only show in town for this forecast period, and it's a classic reef setup that's exposed to the southwest and handles the big stuff.
The water temperature is sitting at 59°F, which is about 0.5°F below the average for this time of year—nothing to write home about, just standard autumn conditions.
The first real chance to get wet comes on Monday, the 31st of August. The morning session is the pick of the early days. We've got a solid 6ft swell from the southwest, with a very long period of 19 seconds. That's a deep, powerful groundswell. The northeast wind is blowing 12 mph and cross-offshore, keeping the surface clean. The combined energy is pumping at 2175, which is strong. This is a classic, powerful reef wave. The afternoon sees the wind switch to a light north-northwest, but it's cross-on, so expect a little bump.
The standouts are a bit of a wait, but they're worth it. The sessions on Tuesday, the 8th of September, and Wednesday, the 9th, are the best of the whole run. Tuesday afternoon is a monster. The swell is 10ft from the southwest, with a 19-second period. The wind is from the south at 12 mph, straight cross-shore, but the combined wave energy is a staggering 11452. That's a massive amount of power. This is a reef, so it will handle that size, but at 10ft, this is expert territory only. It's going to be heavy, hollow, and not for the faint-hearted.
The following morning, Wednesday the 9th, is the real gem. The swell drops to a still-serious 8ft from the southwest, with a 17-second period, and the wind is a clean offshore from the east-northeast at 9 mph. The energy is still strong at 3082. This is the sweet spot: a big, powerful southwest groundswell hitting a reef with glassy offshore wind. The conditions are described as excellent for experienced surfers, and that's exactly what it is. If you can handle the size, this is the session to circle.
After the 9th, the swell slowly backs off. The 10th and 11th see 5ft to 5ft swells with clean conditions, but it's a step down in quality and energy. The second week sees the swell drop to 3ft and below, with a mix of wind directions and mostly marginal conditions. It's a real long-range chase for the big stuff, and the forecast is less certain out that far, but the promise of that Wednesday morning is enough to get anyone stoked.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Mon afternoon, min 13°C on Tue night). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Sun morning. Very mild (max 18°C on Fri morning, min 13°C on Sat morning). Winds increasing (calm on Sat afternoon, strong winds from the SW by Sun morning). | |||||||||||||||||||
Mon 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | ||||||||||||||
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 18 | SW 16 | SW 15 | SW 15 | SW 16 | SW 16 | SW 14 | SW 14 | SW 14 | SW 14 | SW 15 | SW 15 | SW 15 | SW 15 | SW 16 | SW 16 | SW 16 | SW 15 | WSW 14 | SW 13 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1880 | 1210 | 674 | 472 | 1215 | 1055 | 1289 | 1728 | 1514 | 1641 | 2229 | 1907 | 1610 | 1825 | 3482 | 3818 | 3304 | 1568 | 1427 | 2830 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross | cross-on | cross-on | on | on | on | on | on | off | cross | on | cross-on | cross-on | on | cross-off | cross-on | cross-on | cross-on |
High Tide | 7:05PM0.00m | 9:06PM0.00m | 11:01PM0.00m | 00:45AM0.00m | 2:23AM0.00m | |||||||||||||||
Low Tide | 6:07AM-0.00m | 8:05AM-0.00m | 10:05AM-0.00m | 11:54AM-0.00m | 1:33PM-0.00m | 3:13PM-0.00m | ||||||||||||||
 |  |  |  |  | | | | | | |  |  | | | | | | | | |
 | — | — | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | 6:45 | — | — |
 | 6:14 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:17 | — | — | 6:17 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | — | — | — | — | 5 | 2 | — |
Temp °C | 22 | 22 | 20 | 20 | 14 | 13 | 14 | 15 | 15 | 15 | 15 | 18 | 17 | 15 | 13 | 13 | 14 | 17 | 13 | 14 |
Feels °C | 20 | 17 | 14 | 17 | 10 | 8 | 8 | 9 | 12 | 12 | 13 | 13 | 14 | 10 | 10 | 11 | 9 | 8 | 1 | 4 |
Swell 1 Height (m) Direction Period (s) | SW 18 | SW 16 | SW 15 | SW 15 | S 17 | SW 16 | S 16 | S 15 | SW 14 | SW 14 | SW 15 | SW 15 | SW 15 | S 15 | SW 16 | SW 16 | SW 16 | SW 15 | WSW 14 | — |
| kJ | 1880 | 1210 | 674 | 472 | 6 | 1055 | 20 | 4 | 1514 | 1641 | 2229 | 1907 | 1610 | 4 | 3482 | 3818 | 3304 | 1568 | 1427 | — |
Swell 2 Height (m) Direction Period (s) | S 18 | S 16 | S 16 | SW 18 | — | S 16 | — | — | S 15 | S 15 | SSE 17 | SSE 16 | S 16 | — | S 17 | SSE 17 | SSE 16 | S 16 | NW 5 | — |
| kJ | 24 | 5 | 5 | 375 | — | 5 | — | — | 4 | 18 | 28 | 26 | 19 | — | 22 | 29 | 27 | 19 | 24 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | S 17 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 14 | — |
| kJ | — | — | — | 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | — |
Wind waves Height (m) Direction Period (s) | — | — | NNW 5 | NW 4 | SW 16 | SW 5 | SW 14 | SW 14 | — | — | — | N 5 | NNW 5 | SW 15 | — | — | — | NNE 5 | — | SW 13 |
| kJ | — | — | 50 | 7 | 1215 | 29 | 1289 | 1728 | — | — | — | 73 | 37 | 1825 | — | — | — | 37 | — | 2830 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 154 | 24 | 24 | 1497 | 356 | 398 | 356 | 891 | 1075 | 1026 | 1026 | 5 | 346 | 346 | 1123 | 1497 | 499 | 0 | 412 | 343 |
Best forecast wave conditions in Eyre Peninsula | ||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||
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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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