The Island surfForecast / SA – Eyre Peninsula / Australia

information circle12 Day Weather and Surf, issued 3 pm Sunday 21 Dec 2025 ACDT
Forecast update in hr  min  s Forecast update imminent
The Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's The Island sea temperature is
19.5° C
(Which is 1.3°C warmer than normal for this time of year)


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 Friday (Dec 26) at 10AM. The primary swell is predicted to be 1.1m and 12s period with a secondary swell of 0.4m and 19s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at The Island in the next 12 days are 3.0m 17s and forecast to arrive on Tuesday (Dec 23) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Wednesday (Dec 24) at 10PM.

Wave TypeTime (ACDT) & Date Wave Height & Period
Next good surf (1 star+)10AM (Fri 26th Dec)3.5ft (1.1m) 12s
Best Surf 4AM (Sat 27th Dec)3.5ft (1.1m) 16s
Most Powerful 4PM (Tue 23rd Dec)10ft (3.0m) 17s

Table - best surf conditions forecast for The Island over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Very mild (max 17°C on Sun afternoon, min 14°C on Tue night). Mainly strong winds.

Days 3-6 Weather Summary Mostly dry. Warm (max 31°C on Sat morning, min 14°C on Wed night). Winds decreasing (strong winds from the SSE on Thu afternoon, light winds from the WNW by Sat morning).

Sun
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
1
0
0
0
2
4
2
2
2
0
1
1
0
2
0
1
1
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.8
SW
1.6
SW
1.3
SW
1.2
SW
1.2
SW
1.7
SW
3
SW
2.1
SW
1.7
SW
2.1
SW
1.3
SW
1.3
SW
1.8
SSW
1.1
SW
1.1
SSW
0.9
SW
0.8
SW
0.9
SW
0.8
SW
0.8
SW
0.7
SW
Period(s) (?)91211111316171615141413131312121316161414
Wave
Graph
(?)Metric surfscale
Energy kJ (?)490761445344473147443122242122917045886281057352371244215427352251200
Wind
(km/h)
40
SSW
25
S
15
SW
25
SW
20
S
25
SSE
30
S
25
SSE
25
SSE
35
SSE
35
SE
35
SE
45
SSE
35
ESE
20
ESE
30
SSE
25
E
20
NNE
20
SSW
25
ENE
25
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscrosscross-
on
cross-
on
crosscross-
off
crosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
offcross-
off
crosscross-
off
cross-
on
High Tide
/ height (m)
9:57PM
0.00
11:56PM
0.00
2:18AM
0.00
4:32AM
0.00
6:24AM
0.00
8:01AM
0.00
9:38AM
0.00
Low Tide
/ height (m)
10:53AM
-0.00
3:28PM
-0.00
5:31PM
-0.00
7:14PM
-0.00
8:49PM
-0.00
Sun
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunrise--6:20--6:20--6:22--6:22--6:22--6:22--6:24
Sunset8:40--8:40--8:42--8:42--8:43--8:43--8:43--
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
---------------------
Temp. °C171616171717161516161618191925222531292518
Feels °C (?)1010131315131191210911101120161727242015
  • 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)
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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 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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