Surf Forecasts:
The Island surf forecast from 7 Aug 2026:
- Best quality surf: Saturday 15 Aug, 3AM (local time) - 7ft (2.2m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Thursday 13 Aug, 6AM (local time) - 11ft (3.5m), 16s period, SW swell with 6,695 kJ wave energy.
- Next surfable swell (1★+): Saturday 15 Aug, 3AM (local time) - 7ft (2.2m), 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 Saturday (Aug 15) at 3AM. The primary swell is predicted to be 2.2m and 16s period with a secondary swell of 0.2m and 16s. 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 3.5m 16s and forecast to arrive on Thursday (Aug 13) at 6AM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Sat 15th Aug) | 7ft (2.2m) 16s |
| Best Surf | 3AM (Sat 15th Aug) | 7ft (2.2m) 16s |
| Most Powerful | 6AM (Thu 13th Aug) | 11ft (3.5m) 16s |
Table - best surf conditions forecast for The Island over the next 16 days.
The Lowdown
Alright, this is Rusty. Let’s get into it for The Island, a solid SW-exposed reef break.
We’re looking at a pretty rough start to this 16-day window, with the first real hope not showing up until well into the second week. The early days are all about messy, blown-out conditions as a run of strong winds and building swell keep things ugly. The swell energy is massive though, peaking with a combined energy of 4088 on the 10th, but it’s all for nothing with the wind. A near gale on the morning of the 11th (853 energy) and more onshore mess right through to the 13th mean you’re better off doing something else.
The tide will play a role on the 13th with some marginal surf, but the winds finally ease. Light and variable breezes that morning give a brief window with 8ft SW swell (16-second period) and a combined energy of 3027 – still big and powerful, but offering some shape.
Now, the standout window. The morning of Friday the 14th of August is where it’s at. We get light offshore, cross-off wind from the SE at just 6 mph with clean surf. The swell is a solid 8ft from the SW, with a long 17-second period and an energy of 3156. This is excellent surf for experienced surfers. This reef will be handling that long-period groundswell beautifully, giving you proper, lined-up waves. Crowds can be a factor here sometimes, so get on it early.
The morning of Saturday the 15th of August brings 6ft SW swell (16-second period) with glassy conditions – that’s the dream. Light winds from the SE and an energy of 1784 means clean, well-shaped waves, also excellent for experienced surfers.
After that, the size drops, but the quality stays good for a few days. The morning of Sunday the 16th has a clean 5ft swell with gentle offshore winds, and Monday the 17th keeps that clean, smaller vibe. The morning of Tuesday the 18th offers a bit more size at 5ft with a long period (18 seconds) and clean cross-off wind.
From the 19th onwards, the wind turns nasty again, blowing strong and cross-shore, and the window closes. There’s a bit of a lull and then a final pulse of onshore slop on the 22nd and 23rd with poor conditions. All in all, your best bets are locked in for the 14th and 15th of August. Get it while it’s good.
Rusty
Short Range ForecastHeavy rain (total 27mm), heaviest during Sun morning. Very mild (max 17°C on Sat afternoon, min 12°C on Sun morning). Winds decreasing (gales from the SW on Sun night, moderate winds from the NW by Mon afternoon). | Days 4-6 Weather SummaryModerate rain (total 11mm), heaviest on Tue afternoon. Very mild (max 16°C on Thu night, min 11°C on Tue afternoon). Winds decreasing (near gales from the NW on Tue morning, light winds from the WNW by Thu night). | ||||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | |||||||||||||||
AM | 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 14 | WSW 16 | WSW 12 | SW 13 | SW 17 | SW 16 | SW 16 | SW 14 | W 8 | SW 16 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 18 | SW 17 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1164 | 1254 | 821 | 3913 | 2544 | 2843 | 3859 | 2948 | 1474 | 915 | 699 | 4367 | 4768 | 4335 | 6551 | 3438 | 2758 | 1760 | 3273 | 3353 | 2635 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | on | on | cross-on | cross-on | on | cross | cross | cross-on | cross-on | on | cross-on | cross-on | on | on | on | cross-on | cross-on | cross-off |
High Tide | 3:11AM0.00m | 4:48AM0.00m | 6:33AM0.00m | 8:31AM0.00m | 10:29AM0.00m | 12:16PM0.00m | |||||||||||||||
Low Tide | 2:23PM-0.00m | 4:00PM-0.00m | 5:39PM-0.00m | 7:32PM-0.00m | 9:31PM-0.00m | 11:25PM-0.00m | 1:05AM-0.00m | ||||||||||||||
 |  |  |  |  | |  |  |  | | | | | |  | | | | | | | |
 | 7:18 | — | — | 7:18 | — | — | 7:16 | — | — | 7:16 | — | — | 7:15 | — | — | 7:13 | — | — | 7:13 | — | — |
 | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:02 | — |
mm | — | 4 | 5 | 10 | 3 | 5 | — | — | — | — | 10 | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 17 | 15 | 13 | 13 | 14 | 13 | 14 | 14 | 15 | 12 | 14 | 14 | 15 | 14 | 15 | 15 | 16 | 16 | 16 | 14 |
Feels °C | 11 | 10 | 10 | 1 | 1 | 2 | 7 | 8 | 8 | 4 | 1 | 5 | 5 | 10 | 10 | 11 | 12 | 14 | 14 | 13 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 14 | — | — | — | — | SW 16 | SW 16 | SW 14 | S 19 | S 17 | S 17 | — | SW 16 | SW 16 | SW 16 | SW 15 | SW 18 | SW 17 | SW 16 |
| kJ | 1164 | 1254 | 821 | — | — | — | — | 2948 | 1474 | 915 | 7 | 6 | 5 | — | 6551 | 3438 | 2758 | 1760 | 3273 | 3353 | 2635 |
Swell 2 Height (m) Direction Period (s) | S 16 | S 16 | S 15 | — | — | — | — | S 17 | S 16 | S 15 | — | — | — | — | — | SSE 17 | SSE 16 | SSE 15 | SSE 18 | — | SSE 16 |
| kJ | 5 | 5 | 4 | — | — | — | — | 6 | 5 | 5 | — | — | — | — | — | 28 | 25 | 21 | 33 | — | 26 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 4 | — | NW 5 | WSW 16 | WSW 12 | SW 13 | SW 17 | — | NW 4 | NNW 5 | W 8 | SW 16 | SW 18 | SW 17 | SW 16 | — | — | — | — | SSE 18 | — |
| kJ | 10 | — | 56 | 3913 | 2544 | 2843 | 3859 | — | 31 | 83 | 699 | 4367 | 4768 | 4335 | 3438 | — | — | — | — | 31 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 412 | 250 | 412 | 249 | 346 | 939 | 1074 | 1306 | 356 | 824 | 1074 | 1361 | 1497 | 1428 | 1083 | 1075 | 1083 | 154 | 24 | 897 | 51 |
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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