Surf Forecasts:
The Island surf forecast from 5 Sep 2026:
- Best quality surf: Sunday 6 Sep, 6AM (local time) - 7ft (2.1m), 14s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 9 Sep, 6PM (local time) - 8ft (2.5m), 17s period, SW swell with 4,138 kJ wave energy.
- Next surfable swell (1★+): Sunday 6 Sep, 6AM (local time) - 7ft (2.1m), 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 Sunday (Sep 06) at 6AM. The primary swell is predicted to be 2.1m and 14s period with a secondary swell of 0.1m and 15s. 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 2.5m 17s and forecast to arrive on Wednesday (Sep 09) at 6PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Wednesday (Sep 09) at 6PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Sun 6th Sep) | 7ft (2.1m) 14s |
| Best Surf | 6AM (Sun 6th Sep) | 7ft (2.1m) 14s |
| Most Powerful | 6PM (Wed 9th Sep) | 8ft (2.5m) 17s |
Table - best surf conditions forecast for The Island over the next 16 days.
The Lowdown
Alright crew, Rusty here, with the same scoop in feet and degrees.
The Island is a consistent reef, exposed to the SW, and it’s the only spot we’re looking at. The water is 60°F, which is normal for the season.
We start with a dud on Saturday, 5th September. An 8ft SW swell is coming in with a 30 km/h cross-onshore wind. The combined energy is 2253 (moderate to strong), but the conditions are poor.
Sunday, 6th September morning is a standout. The swell is 7ft from the SW, with a clean 10 km/h cross-offshore breeze. Energy is strong at 2144. This is excellent for experienced surfers. The afternoon is still rideable.
Monday, 7th September drops to 4ft, with a moderate breeze. Energy is low at 531. Not much going on.
Tuesday, 8th September brings a 6ft SW swell with a very long 17-second period. Energy is 1944, and the wind is cross-off. Good for the reef.
Wednesday, 9th September is expert-only. The swell is 8ft with an 18-second period, and energy is a massive 4030 to 4238. The wind is a strong cross-off, so the face is clean, but the power is huge.
Thursday, 10th September morning is a top pick: 7ft SW swell, 2375 energy, and a clean offshore E wind at 30 km/h. That’s a winner.
Friday, 11th September afternoon is a glassy gem. The swell drops to 4ft, but the wind goes glassy, and the wave comment says “expect very good surf conditions.”
Moving into the second week, Sunday, 13th September morning has a clean 4ft SW swell with a light offshore breeze. Then Tuesday, 15th September morning is another standout: 7ft SW swell, 15-second period, strong energy (2256), and a light offshore NE wind. Excellent.
The last event is Sunday, 20th September, over a week away. The morning shows 8ft SW swell with a 20-second period, and a massive 5509 energy. The wind is onshore, so likely messy. Too far out to trust.
The pick of the bunch is Sunday, 6th September morning and Thursday, 10th September morning. The Island is a reef, so expect some company, but it’ll be worth it.
Rusty.
Short Range ForecastMostly dry. Very mild (max 13°C on Sat afternoon, min 10°C on Mon night). Winds increasing (light winds from the SE on Sat night, fresh winds from the SSE by Mon afternoon). | Days 5-7 Weather SummaryMostly dry. Very mild (max 18°C on Thu afternoon, min 8°C on Wed night). Winds decreasing (strong winds from the SE on Wed morning, light winds from the NNE by Fri morning). | |||||||||||||||||||
Sat 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | ||||||||||||||
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 14 | SW 14 | SW 14 | SW 14 | SW 13 | SSW 13 | SW 13 | SW 18 | SW 17 | SW 16 | SW 16 | SW 17 | SW 18 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 17 |
Wave Graph  | ||||||||||||||||||||
 kJ | 2238 | 2197 | 1549 | 1238 | 569 | 458 | 525 | 1925 | 1938 | 1611 | 1438 | 2442 | 4030 | 3377 | 2344 | 1809 | 1323 | 924 | 659 | 978 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | off | cross-off | glassy | cross-off |
High Tide | 2:23AM0.00m | 4:06AM0.00m | 6:00AM0.00m | 8:01AM0.00m | 9:54AM0.00m | 11:33AM0.00m | ||||||||||||||
Low Tide | 3:13PM-0.00m | 5:01PM-0.00m | 7:01PM-0.00m | 9:00PM-0.00m | 10:44PM-0.00m | 00:19AM-0.00m | ||||||||||||||
 |  |  | | | | | | |  |  | | |  | | | | | | | |
 | — | — | 6:45 | — | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — |
 | 6:17 | — | — | 6:17 | — | — | 6:19 | — | — | 6:19 | — | — | 6:20 | — | — | 6:21 | — | — | 6:21 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 15 | 10 | 14 | 18 | 14 | 17 | 20 | 20 |
Feels °C | 7 | 9 | 10 | 9 | 8 | 8 | 8 | 8 | 7 | 6 | 4 | 5 | 7 | 2 | 9 | 12 | 7 | 13 | 18 | 15 |
Swell 1 Height (m) Direction Period (s) | S 14 | SW 14 | SW 14 | SW 14 | SW 13 | SSW 13 | SW 13 | SW 18 | SW 17 | SW 16 | SW 16 | SW 17 | SW 18 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 17 |
| kJ | 15 | 2197 | 1549 | 1238 | 569 | 458 | 525 | 1925 | 1938 | 1611 | 1438 | 2442 | 4030 | 3377 | 2344 | 1809 | 1323 | 924 | 659 | 978 |
Swell 2 Height (m) Direction Period (s) | — | S 15 | SW 16 | S 14 | SW 23 | SW 21 | SW 20 | SSW 13 | S 18 | — | — | SW 20 | — | — | SSE 18 | SW 26 | SW 25 | SW 24 | SSE 13 | SSE 17 |
| kJ | — | 18 | 595 | 4 | 21 | 71 | 264 | 710 | 6 | — | — | 1682 | — | — | 31 | 26 | 24 | 22 | 18 | 29 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | S 10 | — | — | — | — | — | — | — | — | — | — | SW 25 | SW 24 | — | — |
| kJ | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | 24 | 22 | — | — |
Wind waves Height (m) Direction Period (s) | SW 14 | — | — | — | SSE 4 | ENE 3 | SSE 4 | E 3 | — | S 17 | S 6 | SSE 7 | SSE 5 | SE 5 | ESE 4 | SSE 17 | ESE 5 | E 4 | — | — |
| kJ | 2238 | — | — | — | 31 | 2 | 11 | 3 | — | 6 | 74 | 114 | 78 | 80 | 20 | 28 | 50 | 12 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1306 | 154 | 0 | 13 | 337 | 89 | 154 | 0 | 89 | 398 | 1321 | 1593 | 1660 | 89 | 89 | 29 | 5 | 13 | 0 | 133 |
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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