
Surf Forecasts:
The Island surf forecast from 4 Sep 2026:
- Best quality surf: Sunday 6 Sep, 6AM (local time) - 7ft (2.1m), 14s period, SW swell with glassy winds.
- Most powerful swell: Wednesday 9 Sep, 6PM (local time) - 8ft (2.5m), 18s period, SW swell with 4,185 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 glassy as the swell arrives.
The most powerful waves expected at The Island in the next 16 days are 2.5m 18s 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 1.5m 6s period and expected on Wednesday (Sep 09) at 9AM.
| 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) 18s |
Table - best surf conditions forecast for The Island over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s coming up for the Island. This is a solid reef setup that loves a good SW groundswell, and we’ve got plenty of that in the pipeline. It’s going to be a run for experienced surfers only, with some real standout windows if you time it right.
The water temperature is sitting at 60°, which is bang on average for this time of year, so no surprises there.
The first few days are a write-off. Saturday the 5th is a total mess with howling WSW cross-onshore winds at 25 mph, and the swell is a jumbled 8 ft. Not worth paddling out. That clears up nicely by Sunday morning the 6th. We get a clean 7 ft SW groundswell (14 sec period) with a light SE cross-off breeze. The energy is pumping with a combined energy reading of 2144. Conditions are excellent for experienced surfers. This is a proper window. Sunday afternoon drops a touch to 6 ft and stays clean, still a good option.
Monday the 7th is smaller, only 3 ft to 4 ft, and the wind is offshore or cross-off, but the energy is weak (401 to 722). It’s clean but marginal. Tuesday the 8th sees a return of a longer-period SW groundswell at 6 ft and a 17-second period. The energy is strong (1801), and the morning is clean with a gentle ESE cross-off. That’s a fantastic session. The period is very long, so this reef will hold it beautifully, but it might be a bit too straight for a beach break. For a reef, it’s a dream.
Wednesday the 9th and Thursday the 10th are the biggest push of the outlook. Swell holds at 8 ft to 8 ft with a very long 17 to 18-second period. The combined energy is massive, hitting 3984 on Wednesday afternoon. Morning winds are strong offshore from the SE, keeping things clean. This is big, powerful groundswell – only for the pros. The energy is enormous.
After that, it settles down for a while. From Friday the 11th through to Monday the 14th, the swell drops to 5 ft and below, with periods of onshore wind and poor conditions. There’s a notable gap with no real recommendation from Friday afternoon through to Monday. We get a refreshing change on Tuesday the 15th with a clean 5 ft to 6 ft SW groundswell returning, and the energy picks back up (2592). The wind is cross-off from the SSE. Good.
The absolute standout, the one you want to circle on the calendar, is Wednesday the 16th and Thursday the 17th. Wednesday morning brings a 7 ft SW groundswell with a 16-second period and a clean offshore wind from the east. The energy is strong (2120). Excellent conditions for experienced surfers. But Thursday the 17th is something special. The morning is a bit cloudy with a 7 ft SW groundswell (17 sec, 2821 energy), but the afternoon goes completely glassy – zero wind, calm conditions. The swell is a perfect 7 ft with a long period. This is the best of the best. The waves will be clean, powerful, and lined up.
The last few days from Friday the 18th onward are messy again with onshore winds and smaller, weaker swell. The only glimmer is Sunday the 20th morning, which is glassy with a 5 ft SW groundswell. It’s good, but nothing like the mid-week bomb.
So, the pick is clear: Thursday the 17th afternoon. Glassy conditions, 7 ft SW groundswell, massive energy. It’s an expert-only wave, but it will be a session to remember.
Rusty.
Short Range ForecastMostly dry. Very mild (max 15°C on Mon night, min 10°C on Sun night). Winds decreasing (strong winds from the WSW on Sat morning, calm by Sat night). | Days 4-6 Weather SummarySome drizzle, heaviest during Tue afternoon. Very mild (max 18°C on Thu afternoon, min 9°C on Wed night). Winds increasing (light winds from the ESE on Tue morning, strong winds from the SE by Wed morning). | ||||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | |||||||||||||||
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 13 | SW 14 | SW 14 | SW 14 | SW 14 | SSW 13 | SW 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 15 |
Wave Graph | |||||||||||||||||||||
2170 | 2238 | 2197 | 1549 | 1238 | 808 | 330 | 458 | 2104 | 1795 | 1381 | 1552 | 3399 | 3984 | 3199 | 2825 | 2113 | 1547 | 836 | 668 | 777 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-off | cross-off | cross-off | off | cross-off | off | cross-off | cross | cross-off | cross-off | cross-off | off | off | cross-off | off | cross-off | cross | off |
High Tide | 2:23AM0.00m | 4:06AM0.00m | 6:00AM0.00m | 8:01AM0.00m | 9:54AM0.00m | 11:33AM0.00m | |||||||||||||||
Low Tide | 1:33PM-0.00m | 3:13PM-0.00m | 5:01PM-0.00m | 7:01PM-0.00m | 9:00PM-0.00m | 10:44PM-0.00m | 00:19AM-0.00m | ||||||||||||||
6:47 | — | — | 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 | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 15 | 13 | 13 | 13 | 13 | 14 | 11 | 13 | 18 | 13 | 17 | 17 | 19 |
Feels °C | 4 | 7 | 9 | 10 | 9 | 8 | 9 | 11 | 11 | 10 | 10 | 7 | 5 | 6 | 3 | 7 | 12 | 6 | 14 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | S 17 | S 14 | SW 14 | SW 14 | SW 14 | SSW 13 | SW 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 15 |
6 | 15 | 2197 | 1549 | 1238 | 808 | 330 | 458 | 2104 | 1795 | 1381 | 1552 | 3399 | 3984 | 3199 | 2825 | 2113 | 1547 | 836 | 668 | 777 | |
Swell 2 Height (m) Direction Period (s) | — | — | S 15 | SW 16 | S 14 | SW 23 | SW 21 | SW 20 | SW 13 | S 18 | S 17 | — | — | — | SSE 18 | SSE 18 | SW 26 | SW 25 | SW 24 | SW 22 | S 13 |
— | — | 18 | 595 | 4 | 21 | 71 | 264 | 418 | 6 | 6 | — | — | — | 32 | 31 | 26 | 24 | 22 | 73 | 13 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 25 | WSW 24 | SSE 14 | S 17 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 24 | 55 | 18 | 6 | |
Wind waves Height (m) Direction Period (s) | SW 13 | SW 14 | — | — | — | SSE 4 | SE 4 | SSE 4 | SE 5 | — | — | SSE 5 | SSE 6 | SSE 6 | SE 5 | ESE 5 | SSE 17 | ESE 5 | NE 4 | — | — |
2170 | 2238 | — | — | — | 24 | 16 | 13 | 51 | — | — | 31 | 156 | 93 | 22 | 39 | 29 | 47 | 6 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1123 | 1287 | 154 | 0 | 337 | 133 | 5 | 5 | 89 | 0 | 398 | 337 | 1515 | 1660 | 1075 | 337 | 29 | 51 | 13 | 154 | 0 |
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.










