Surf Forecasts:
The Island surf forecast from 12 Sep 2026:
- Best quality surf: Thursday 17 Sep, 3AM (local time) - 5ft (1.5m), 15s period, SW swell with offshore winds.
- Most powerful swell: Tuesday 15 Sep, 9PM (local time) - 6.5ft (2.0m), 14s period, SSW swell with 1,667 kJ wave energy.
- Next surfable swell (1★+): Thursday 17 Sep, 3AM (local time) - 5ft (1.5m), 15s 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 (Sep 17) at 3AM. The primary swell is predicted to be 1.5m and 15s period with a secondary swell of 0.2m and 16s. 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 2.0m 14s and forecast to arrive on Tuesday (Sep 15) at 9PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Tuesday (Sep 15) at 9PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Thu 17th Sep) | 5ft (1.5m) 15s |
| Best Surf | 3AM (Thu 17th Sep) | 5ft (1.5m) 15s |
| Most Powerful | 9PM (Tue 15th Sep) | 6.5ft (2.0m) 14s |
Table - best surf conditions forecast for The Island over the next 16 days.
The Lowdown
Rusty here again, givin' ya the same story but in feet and miles per hour.
Things are flat for a few days. The first whisper of action is on Tuesday morning, the 15th of September.
Tuesday morning we get a clean start. The Island, a reef break for advanced crew only, gets a 6ft swell from the SW with a long 15-second period. The cross-offshore wind at 19 mph makes it look clean. The wave energy kicks in at 1212. It's just the beginning, and this spot can get crowded sometimes. Water temp is 59°, which is about normal for the season.
The first real standout is Wednesday morning, the 16th of September. Offshore wind from the east at 19 mph and a 6ft SW swell with a 15-second period. The energy jumps to 1605. That’s a solid combo.
After that, it gets messy and windy through to the weekend. Not worth your time.
The big prize is later in the outlook. On Tuesday the 22nd of September afternoon, we get a clean 7ft SW swell with a 16-second period. The wind is light cross-off, keeping it clean. The energy is 2314. This is for experienced surfers only – 7ft is too big for beginners.
Then, the absolute best of the run: Wednesday afternoon, the 23rd of September. The wind drops to glassy – dead calm. The swell is a clean 6ft from the SW with a 15-second period. The energy is 1476. With glassy conditions and that long period on the reef, The Island will be absolutely perfect. Long, clean lines.
If you want size, look at Friday the 25th of September. That afternoon a 10ft SW swell rolls in with an 18-second period. The energy is a massive 7391. That's expert-only, heavy, and intimidating. It stays clean, but it's a beast.
Saturday the 26th of September brings it back down to excellent, clean 7ft surf in the morning, dropping to 6ft in the afternoon.
The run fades out from Sunday the 27th.
The play: For the best clean waves, paddle out Wednesday afternoon the 23rd. For the biggest, gnarliest sets, Friday the 25th is the one, but only if you're experienced.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Sat afternoon, min 12°C on Tue morning). Winds decreasing (fresh winds from the NNE on Sat night, light winds from the SSW by Mon morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 20°C on Fri morning, min 8°C on Tue night). Winds decreasing (strong winds from the SSE on Tue afternoon, light winds from the N by Thu morning). | |||||||||||||||||||
Sat 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | ||||||||||||||
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 16 | SW 15 | SW 16 | WSW 16 | SW 15 | SW 14 | SW 14 | SW 16 | SW 15 | SW 14 | SW 14 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 13 | SW 16 | SW 15 | SW 14 |
Wave Graph  | ||||||||||||||||||||
 kJ | 793 | 360 | 574 | 832 | 418 | 573 | 390 | 823 | 1212 | 1521 | 1393 | 1585 | 1511 | 1289 | 716 | 478 | 335 | 361 | 322 | 206 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | on | on | on | cross | cross | cross | cross-off | cross-off | cross-off | off | cross-off | off | cross-off | cross | cross-off | cross | cross-on | cross-off |
High Tide | 2:42PM0.00m | 4:38PM0.00m | 6:53PM0.00m | 9:04PM0.00m | 10:53PM0.00m | 00:26AM0.00m | ||||||||||||||
Low Tide | 1:52AM-0.00m | 3:38AM-0.00m | 5:44AM-0.00m | 8:00AM-0.00m | 10:01AM-0.00m | 11:41AM-0.00m | ||||||||||||||
 |  |  | | | | | | | |  | | | | | | | | | | |
 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — | 6:31 | — | — | 6:31 | — | — | 6:28 | — | — |
 | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:23 | — | — | 6:24 | — | — | 6:24 | — | — | 6:25 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 25 | 15 | 15 | 15 | 14 | 14 | 14 | 12 | 12 | 11 | 13 | 16 | 12 | 16 | 17 | 18 | 20 | 24 | 24 |
Feels °C | 22 | 20 | 10 | 10 | 12 | 13 | 11 | 12 | 6 | 5 | 4 | 8 | 9 | 5 | 14 | 14 | 13 | 14 | 20 | 18 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 16 | S 16 | SW 15 | SW 14 | SW 14 | SW 16 | SW 15 | SW 14 | SW 14 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 13 | SW 16 | SW 15 | SW 14 |
| kJ | 793 | 360 | 574 | 5 | 418 | 573 | 390 | 823 | 1212 | 1521 | 1393 | 1585 | 1511 | 1289 | 716 | 478 | 335 | 361 | 322 | 206 |
Swell 2 Height (m) Direction Period (s) | S 18 | SW 18 | S 17 | — | S 16 | SW 19 | SW 18 | — | — | — | — | S 16 | — | SSE 17 | S 15 | S 14 | SW 17 | S 19 | S 18 | S 16 |
| kJ | 6 | 258 | 6 | — | 5 | 125 | 154 | — | — | — | — | 20 | — | 28 | 17 | 4 | 238 | 7 | 6 | 5 |
Swell 3 Height (m) Direction Period (s) | — | S 18 | — | — | — | S 14 | — | — | — | — | — | — | — | — | — | — | S 12 | — | — | — |
| kJ | — | 6 | — | — | — | 4 | — | — | — | — | — | — | — | — | — | — | 3 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | N 4 | WSW 4 | WSW 16 | SW 7 | — | — | — | SSE 5 | SSE 5 | SE 4 | ESE 5 | SSE 16 | ESE 5 | E 4 | — | SE 3 | N 4 | NNW 4 | N 3 |
| kJ | — | 9 | 20 | 832 | 73 | — | — | — | 39 | 30 | 19 | 41 | 27 | 52 | 12 | — | 3 | 13 | 2 | 8 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 24 | 154 | 356 | 356 | 495 | 154 | 479 | 29 | 337 | 337 | 346 | 210 | 29 | 51 | 13 | 29 | 5 | 249 | 24 | 24 |
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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