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The Island Surf Forecast
/ SA – Eyre Peninsula (19 breaks) / South Australia (91 breaks) /
The Island surfForecast / SA – Eyre Peninsula / Australia
12 Day Weather and Surf, issued 8 pm Monday 18 Aug 2025 ACST
Best Forecast Surf Conditions for The Island this week:
The surf forecast for The Island over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 19) at 6PM. The primary swell is predicted to be 1.3m and 17s period with a secondary swell of 0.1m and 17s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at The Island in the next 12 days are 3.0m 16s and forecast to arrive on Saturday (Aug 23) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 4s period and expected on Thursday (Aug 21) at 3AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Tue 19th Aug) | 4.5ft (1.3m) 17s |
| Best Surf | 12AM (Sun 24th Aug) | 7ft (2.1m) 15s |
| Most Powerful | 3PM (Sat 23rd Aug) | 10ft (3.0m) 16s |
Table - best surf conditions forecast for The Island over the next 12 days.
Short Range Forecast Mostly dry. Warm (max 22°C on Thu afternoon, min 11°C on Mon night). Winds increasing (light winds from the NNE on Tue afternoon, strong winds from the NNE by Thu morning). | Days 3-6 Weather Summary Mostly dry. Very mild (max 16°C on Thu night, min 11°C on Sat night). Wind will be generally light. | |||||||||||||||||||||
Tuesday 19 | Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | Mon 25 | ||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | ||
Rating (10 max) | ||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||
| Period(s) (?) | 12 | 14 | 17 | 16 | 16 | 16 | 15 | 14 | 15 | 15 | 16 | 16 | 15 | 15 | 16 | 15 | 14 | 13 | 13 | 13 | 6 | |
Wave (?)Graph  | ||||||||||||||||||||||
| Energy (?) | 729 | 959 | 1080 | 565 | 410 | 471 | 375 | 403 | 635 | 926 | 4146 | 5224 | 1531 | 1720 | 7330 | 1908 | 1139 | 909 | 466 | 373 | 505 | |
Wind (km/h) | ||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross | glass | cross- on | cross- on | cross- on | on | cross- on | off | off | cross- off | off | cross- off | cross- on | |
High Tide / height (m) | 2:50AM 0.00 | 4:27AM 0.00 | 6:09AM 0.00 | 8:04AM 0.00 | 10:02AM 0.00 | 11:51AM 0.00 | 1:29PM 0.00 | |||||||||||||||
Low Tide / height (m) | 3:38PM -0.00 | 5:17PM -0.00 | 7:06PM -0.00 | 9:02PM -0.00 | 10:57PM -0.00 | 12:41AM -0.00 | ||||||||||||||||
Tuesday 19 | Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | Mon 25 | ||||||||||||||||
| Sunrise | - | 7:07 | - | - | 7:05 | - | - | 7:05 | - | - | 7:03 | - | - | 7:03 | - | - | 7:01 | - | - | 7:00 | - | |
| Sunset | - | - | 6:06 | - | - | 6:07 | - | - | 6:07 | - | - | 6:07 | - | - | 6:08 | - | - | 6:09 | - | - | 6:09 | |
 |  | | |  |  | | | | | | |  | | | | | |  | | | ||
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 2 | - | - | |
| Temp. °C | 14 | 14 | 17 | 17 | 16 | 20 | 18 | 18 | 22 | 16 | 14 | 14 | 14 | 14 | 14 | 13 | 14 | 15 | 16 | 19 | 20 | |
| Feels °C (?) | 10 | 8 | 12 | 10 | 7 | 14 | 10 | 7 | 16 | 11 | 12 | 11 | 11 | 11 | 11 | 10 | 12 | 12 | 9 | 9 | 15 | |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for SA - Eyre Peninsula
The wind is still offshore at The Island (light winds from the ESE at Minnipa 95 km from The Island). 1.2m 12s groundswell from the SW with a 0.6m 17s long period groundswell, also from the SW and a 0.5m 15s groundswell, also from the SW as well as a 0.5m 3s local chop, also from the SSE. 4 swells combining to make bigger set waves.
FREE! Surf-Forecast.com widget for your website
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 12 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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