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Surf Forecasts:

Cape Kersaint surfForecast / SA – Kangaroo Island / Australia

information circle16 Day Weather and Surf, issued 9 am Tuesday 17 Mar 2026 ACDT
Forecast update in hr  min  s Forecast update imminent
Cape Kersaint surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Cape Kersaint sea temperature is
18.8° C
 (Which is slightly warmer than usual)

Best Forecast Surf Conditions for Cape Kersaint this week:

The surf forecast for Cape Kersaint over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Mar 21) at 1AM. The primary swell is predicted to be 1.9m and 14s period with a secondary swell of 0.1m and 12s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Cape Kersaint in the next 16 days are 2.5m 15s and forecast to arrive on Saturday (Mar 21) at 7PM. Winds are predicted to be onshore at the time the swell arrives.

Wave TypeTime (ACDT) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Sat 21st Mar)6ft (1.9m) 14s
Best Surf 1AM (Sat 21st Mar)6ft (1.9m) 14s
Most Powerful 7PM (Sat 21st Mar)8ft (2.5m) 15s

Table - best surf conditions forecast for Cape Kersaint over the next 16 days.

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table

Short Range Forecast Mostly dry. Very mild (max 17°C on Tue morning, min 16°C on Tue afternoon). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Very mild (max 19°C on Sun morning, min 16°C on Fri night). Wind will be generally light.

Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
0
0
1
1
1
0
0
2
2
2
4
3
2
4
3
1
4
3
1
4
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.7
SSW
1.7
SSW
1.7
SW
1.7
SW
1.8
SW
1.8
SW
1.7
SSW
1.7
SSW
1.6
SW
2.5
SSW
2.2
SW
1.9
SW
1.7
SW
2.5
SW
2.4
SW
2
SW
1.7
SW
1.6
SW
1.5
SW
1.4
SW
1.7
SSW
Period(s) (?)131312131313121213141414141514141314141314
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1014890864981109410448358497912446172213681073277322651451102710348526511095
Wind
(km/h)
20
SE
20
SE
15
SE
20
SE
20
SE
20
SE
20
SE
20
SE
15
SE
10
ESE
15
SSE
0
SE
5
SSE
15
S
5
ESE
10
ESE
20
SSE
10
ENE
10
NE
10
SSW
5
NNE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		glassononglasscrosscross-
on		cross-
off		cross-
off		cross-
on		glass
High Tide
/ height (m)
1:12PM
0.74
1:09AM
1.03
1:23PM
0.83
1:31AM
1.00
1:39PM
0.93
1:50AM
0.95
1:59PM
1.01
2:06AM
0.88
2:21PM
1.08
2:17AM
0.80
2:46PM
1.11
2:20AM
0.73
3:12PM
1.10
2:14AM
0.69
Low Tide
/ height (m)
6:42PM
0.32
7:38AM
0.28
7:13PM
0.26
7:43AM
0.27
7:44PM
0.23
7:50AM
0.26
8:14PM
0.24
7:56AM
0.23
8:44PM
0.28
8:04AM
0.20
9:12PM
0.36
8:12AM
0.17
9:39PM
0.46
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Sunrise7:20--7:20--7:22--7:22--7:24--7:24--7:26--
Sunset-7:37--7:37--7:35--7:34--7:31--7:30--7:29-
part cloud
clear
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
Rain (mm)
---------------------
Temp. °C171716171716171716171817181817191817272421
Feels °C (?)151413151513151515161617161617171516252119
  • 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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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Cape Kersaint 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.

View detailed surf forecast for Cape Kersaint at:
surf-forecast.com

Information about the Cape Kersaint Surf forecast

The above surf forecast table for Cape Kersaint provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cape Kersaint can be found by selecting the local surf guide option on the grey menu. Our Cape Kersaint 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 (Cape Kersaint) 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 Cape Kersaint 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 Kangaroo Island? If you are looking for accommodation near Cape Kersaint, camping, hotels and holiday cottages in Kangaroo Island, consider staying in Kingscote which is 62 km (39 miles) away.

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