Surf Forecasts:
The Island surf forecast from 17 Jul 2026:
- Best quality surf: Thursday 23 Jul, 3AM (local time) - 6ft (1.8m), 15s period, SW swell with cross-offshore winds.
- Most powerful swell: Thursday 23 Jul, 9PM (local time) - 6ft (1.8m), 16s period, SW swell with 1,739 kJ wave energy.
- Next surfable swell (1★+): Monday 20 Jul, 6PM (local time) - 4ft (1.2m), 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 Monday (Jul 20) at 6PM. The primary swell is predicted to be 1.2m and 14s period with a secondary swell of 0.1m and 10s. 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 1.8m 16s and forecast to arrive on Thursday (Jul 23) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Sunday (Jul 19) at 3AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Mon 20th Jul) | 4ft (1.2m) 14s |
| Best Surf | 3AM (Thu 23rd Jul) | 6ft (1.8m) 15s |
| Most Powerful | 9PM (Thu 23rd Jul) | 6ft (1.8m) 16s |
Table - best surf conditions forecast for The Island over the next 16 days.
The Lowdown
Alright folks, Rusty here with a look at what's on offer at The Island over the next couple of weeks.
We’re in for a bit of a slow start, to be honest. The first few days are pretty ordinary with the wind mostly onshore or cross-shore, and the swell is pretty weak. The wave energy is sitting around the mid hundreds (266 to 786), which is modest at best. You’ll be looking at small, messy waves that are more frustrating than fun.
Saturday the 20th and Sunday the 21st are similar – nothing to get excited about with the wind messing things up. But keep an eye on Tuesday the 22nd. Wednesday morning looks like a real sneak peak – the wind goes totally glassy, dead calm, with a 3 ft SW swell at 11 seconds. The energy is light though (280), so it’s more of a longboarder's morning, but it’ll be clean as a whistle.
The real standout is Thursday the 23rd. That morning is the one to circle. We’ve got a solid 6 ft SW groundswell pushing in with a decent 14-second period, and the wave energy jumps way up to 1395. The real kicker is the light offshore breeze from the east. This is going to be firing, but listen – with waves that size and that much power, this is for experienced surfers only. Beginners, give this one a miss, it’ll be too big for you. The Island is an advanced reef break, so you need to know what you’re doing. The crowds are also a possibility here, so get in early.
Friday the 24th will still have some size, around 6 ft from the SW, but the wind turns onshore and the quality drops off. We get a bit of a break over the weekend and into early next week, with onshore winds and messy conditions.
Looking further ahead, there’s another interesting window on Wednesday the 30th of July. Thursday morning the 30th of July has a clean 4 ft SW swell with a clean offshore breeze from the ENE. The wave energy is moderate (700), and the forecast calls for very good surf. This one is promising but it’s a way out, so don’t bank on it just yet.
Overall, the best call this fortnight is Thursday the 23rd of July for the experienced crew. For the rest, the water temp is sitting around 61°F, which is basically average for this time of year, nothing unusual.
Rusty, signing off.
Short Range ForecastMostly dry. Very mild (max 18°C on Sat night, min 13°C on Sat morning). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 17°C on Mon afternoon, min 12°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Fri 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | ||||||||||||||
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 14 | SW 13 | SW 13 | SW 13 | SW 19 | SW 18 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 11 | SW 14 | SW 15 | SW 14 | SW 14 | SW 16 |
Wave Graph  | ||||||||||||||||||||
 kJ | 773 | 412 | 261 | 253 | 170 | 133 | 607 | 748 | 566 | 614 | 639 | 623 | 471 | 319 | 209 | 308 | 1185 | 1374 | 1336 | 1552 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-off | cross | cross-off | cross | cross-on | cross-off | cross | cross-on | cross-off | cross | on | glassy | glassy | cross | cross-off | off | cross-on | cross-on |
High Tide | 2:40PM0.00m | 4:16PM0.00m | 5:55PM0.00m | 7:51PM0.00m | 10:07PM0.00m | |||||||||||||||
Low Tide | 1:50AM-0.00m | 3:28AM-0.00m | 5:04AM-0.00m | 6:50AM-0.00m | 8:56AM-0.00m | 11:16AM-0.00m | ||||||||||||||
 |  | | | | | |  |  | |  | | | | |  | | | | | |
 | — | — | 7:33 | — | — | 7:33 | — | — | 7:31 | — | — | 7:31 | — | — | 7:31 | — | — | 7:30 | — | — |
 | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — | — | 5:47 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 16 | 14 | 17 | 18 | 15 | 18 | 18 | 15 | 17 | 17 | 16 | 16 | 16 | 15 | 15 | 14 | 13 | 13 | 13 |
Feels °C | 14 | 11 | 8 | 12 | 13 | 9 | 14 | 13 | 10 | 15 | 15 | 12 | 13 | 14 | 15 | 12 | 10 | 12 | 9 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | SW 18 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 14 | SW 14 | SW 15 | SW 14 | SW 14 | SW 16 |
| kJ | 773 | 412 | 261 | 253 | 170 | 69 | 607 | 748 | 566 | 614 | 639 | 623 | 471 | 319 | 71 | 308 | 1185 | 1374 | 1336 | 1552 |
Swell 2 Height (m) Direction Period (s) | S 16 | S 15 | — | — | SW 21 | SW 19 | — | — | SSW 10 | S 10 | S 15 | S 14 | S 14 | S 14 | — | — | S 16 | SSE 15 | S 15 | SSE 17 |
| kJ | 5 | 4 | — | — | 18 | 133 | — | — | 9 | 2 | 4 | 4 | 4 | 4 | — | — | 5 | 21 | 17 | 29 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | WSW 21 | SW 15 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | 45 | 55 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 4 | — | N 3 | NNW 4 | N 3 | NNW 4 | NNW 4 | NNW 6 | NNW 4 | — | — | — | — | — | SW 11 | SSW 4 | — | — | — | — |
| kJ | 8 | — | 5 | 5 | 2 | 20 | 11 | 12 | 7 | — | — | — | — | — | 209 | 15 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 24 | 5 | 24 | 24 | 24 | 24 | 278 | 24 | 24 | 24 | 0 | 24 | 24 | 0 | 0 | 1065 | 5 | 0 | 356 | 499 |
Best forecast wave conditions in Eyre Peninsula | ||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our The Island surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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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