
Surf Forecasts:
The Island surf forecast from 8 Sep 2026:
- Best quality surf: Thursday 10 Sep, 6AM (local time) - 6.5ft (2.0m), 16s period, SW swell with offshore winds.
- Most powerful swell: Wednesday 9 Sep, 9AM (local time) - 8ft (2.5m), 19s period, SW swell with 4,462 kJ wave energy.
- Next surfable swell (1★+): Thursday 10 Sep, 6AM (local time) - 6.5ft (2.0m), 16s 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 10) at 6AM. The primary swell is predicted to be 2.0m and 16s period with a secondary swell of 0.2m and 17s. 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 2.5m 19s and forecast to arrive on Wednesday (Sep 09) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 6s period and expected on Wednesday (Sep 09) at 3AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Thu 10th Sep) | 6.5ft (2.0m) 16s |
| Best Surf | 6AM (Thu 10th Sep) | 6.5ft (2.0m) 16s |
| Most Powerful | 9AM (Wed 9th Sep) | 8ft (2.5m) 19s |
Table - best surf conditions forecast for The Island over the next 16 days.
The Lowdown
Alright, Rusty here, time for a look at the upcoming surf at The Island.
We’ve got a solid run of swell on the cards, but it’s a mixed bag with the wind, so you’ve got to pick your moments. The real standout window is shaping up for mid-to-late next week with some serious groundswell and clean conditions.
First up, this Wednesday the 9th is a no-go. We’ve got a solid 8ft SW groundswell (19s period) piling in with a massive 4790 units of energy, but that strong SE wind is trashing it. It’s big, it’s mean, and it’s not clean. Not worth a paddle.
Thursday the 10th looks better. The swell drops a touch to 6ft from the SW (16s period) with 1838 energy, and we get a morning offshore from the East – fresh breeze but clean. That’s a decent window, though still a bit on the bigger side for beginners. The Island handles it well, but it’s one for the experienced crew.
Friday the 11th has a real gem. After a clean but smaller morning, the afternoon goes glassy – absolute zero wind – with a 4ft SW groundswell (16s). That’s the kind of session where you feel like you own the ocean. Clean, long-period lines rolling in. It’s smaller, so everyone gets a go, but keep an eye out for crowds, this spot does see a few.
The weekend is pretty disappointing. Saturday and Sunday see the swell drop right off to around 4ft, and the wind shifts onshore or cross-shore. It’s messy and not worth the effort.
We get a little pulse on Monday the 14th but it’s tiny at 3ft. Tuesday the 15th picks back up to 6ft with a moderate offshore from the ESE, clean and rideable, but nothing spectacular.
Now, the big one. Wednesday the 16th September is the standout. We’ve got a solid 6ft SW groundswell (16s), a light SE breeze keeping it clean, and a whopping 1855 units of energy. The water temp anomaly is about average for this time of year, so no surprises in the water temp. This is excellent surf but for experienced surfers – that size on a reef demands respect.
The following Sunday, the 20th of September, is another real contender. After a clean morning with 5ft surf, the afternoon goes glassy again with a 6ft SW groundswell (14s) and 1459 energy. That’s another session where you just want to be out there, soaking it in. The Island loves long-period SW swell like this.
The first few days of the following week get blown out by strong westerlies and a big 8ft swell – that’s kite-surfing territory, not paddle. But then look at the 23rd of September, Wednesday morning. An 8ft SW groundswell (17s) with a light offshore from the ENE and clean conditions. 3727 units of energy. That is a beast of a swell for experts only – very long period, big, powerful. The Island will be firing, but you’d better know what you’re doing. The energy reading is massive.
So, to sum it up: Friday afternoon the 11th is your best bet for a fun, clean session for the average surfer. For the big dog session, mark your calendar for Wednesday the 16th and especially Wednesday the 23rd – those are the ones to get excited about, but they’re for experienced hands only.
Stay stoked,
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Fri afternoon, min 9°C on Wed night). Winds decreasing (strong winds from the SE on Wed morning, calm by Fri afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Sat afternoon, min 15°C on Sun night). Mainly fresh winds. | ||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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 19 | SW 18 | SW 16 | SW 16 | SW 16 | SSW 15 | SW 15 | SW 16 | SW 16 | SW 15 | SW 16 | SW 15 | SW 16 | SW 16 | SW 15 | SW 14 | SW 18 | SW 16 |
Wave Graph | |||||||||||||||||||
1552 | 4462 | 3753 | 2316 | 1809 | 1513 | 1190 | 686 | 853 | 920 | 519 | 546 | 365 | 661 | 636 | 360 | 238 | 312 | 567 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | off | cross-off | off | cross-off | glassy | cross-off | cross-off | cross | cross-off | cross | cross-on | cross-off | cross-off | cross | cross-off |
High Tide | 8:01AM0.00m | 9:54AM0.00m | 11:33AM0.00m | 1:05PM0.00m | 2:42PM0.00m | 4:38PM0.00m | |||||||||||||
Low Tide | 9:00PM-0.00m | 10:44PM-0.00m | 00:19AM-0.00m | 1:52AM-0.00m | 3:38AM-0.00m | ||||||||||||||
— | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | |
6:19 | — | 6:20 | — | — | 6:21 | — | — | 6:21 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 13 | 15 | 10 | 14 | 18 | 16 | 18 | 20 | 20 | 22 | 25 | 25 | 23 | 20 | 15 | 16 | 15 | 14 |
Feels °C | 9 | 5 | 6 | 2 | 8 | 13 | 9 | 14 | 18 | 15 | 16 | 21 | 20 | 19 | 16 | 11 | 13 | 11 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 19 | SW 18 | SW 16 | SW 16 | SW 16 | SSW 15 | SW 15 | SW 16 | SW 16 | SW 15 | SW 16 | SW 15 | SW 16 | SW 16 | SW 15 | SW 14 | SW 18 | SW 16 |
1552 | 4462 | 3753 | 2316 | 1809 | 1513 | 1190 | 686 | 853 | 920 | 519 | 546 | 365 | 661 | 636 | 360 | 238 | 154 | 567 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | SSE 17 | SW 26 | SW 25 | SW 23 | SSE 17 | S 17 | SW 18 | S 18 | SW 18 | S 17 | S 16 | S 16 | SW 18 | SW 18 | — |
— | — | — | — | 29 | 26 | 25 | 83 | 29 | 22 | 318 | 6 | 314 | 6 | 5 | 5 | 119 | 312 | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | SW 26 | SW 25 | — | — | — | S 18 | — | S 18 | — | — | — | SW 4 | — | — |
— | — | — | — | — | 26 | 24 | — | — | — | 6 | — | 6 | — | — | — | 4 | — | — | |
Wind waves Height (m) Direction Period (s) | S 5 | SSE 7 | SE 5 | SE 6 | ESE 4 | SE 4 | ESE 5 | ENE 4 | — | — | NNE 4 | NNW 4 | N 4 | NNW 4 | WNW 4 | SW 4 | — | SW 14 | SSE 4 |
55 | 328 | 82 | 67 | 17 | 8 | 64 | 5 | — | — | 16 | 4 | 6 | 10 | 3 | 7 | — | 285 | 16 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 337 | 1498 | 1660 | 337 | 335 | 5 | 29 | 13 | 0 | 51 | 24 | 24 | 24 | 250 | 346 | 89 | 0 | 1083 | 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.










