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Cape Kersaint Surf Forecast
/ SA – Kangaroo Island (8 breaks) / South Australia (91 breaks) /
Cape Kersaint surfForecast / SA – Kangaroo Island / Australia
12 Day Weather and Surf, issued 8 pm Saturday 02 Aug 2025 ACST
Best Forecast Surf Conditions for Cape Kersaint this week:
The surf forecast for Cape Kersaint over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 03) at 3AM. The primary swell is predicted to be 1.6m and 13s period with a secondary swell of 0.2m and 16s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Cape Kersaint in the next 12 days are 4.0m 21s and forecast to arrive on Tuesday (Aug 05) at 12AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 6s period and expected on Monday (Aug 04) at 12PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Sun 3rd Aug) | 5ft (1.6m) 13s |
| Best Surf | 3PM (Mon 4th Aug) | 11ft (3.5m) 16s |
| Most Powerful | 12AM (Tue 5th Aug) | 13ft (4.0m) 21s |
Table - best surf conditions forecast for Cape Kersaint over the next 12 days.
Short Range Forecast Light rain (total 7mm), mostly falling on Mon afternoon. Very mild (max 15°C on Sun night, min 10°C on Sat night). Winds increasing (light winds from the NNE on Sat night, strong winds from the N by Mon morning). | Days 3-6 Weather Summary Light rain (total 4mm), mostly falling on Tue night. Very mild (max 13°C on Tue night, min 10°C on Fri afternoon). Wind will be generally light. | |||||||||||||||||||||
Sunday 03 | Monday 04 | Tuesday 05 | Wednesday 06 | Thursday 07 | Friday 08 | Sat 09 | ||||||||||||||||
| 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) (?) | 13 | 13 | 13 | 14 | 16 | 16 | 21 | 18 | 17 | 16 | 14 | 14 | 17 | 16 | 16 | 15 | 14 | 14 | 15 | 15 | 16 | |
Wave (?)Graph  | ||||||||||||||||||||||
| Energy (?) | 1102 | 612 | 949 | 1528 | 3711 | 7441 | 18219 | 10228 | 8443 | 11966 | 4078 | 4158 | 9006 | 7292 | 5800 | 3344 | 2427 | 1865 | 2080 | 2140 | 1941 | |
Wind (km/h) | ||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | off | off | cross- off | cross | cross- off | cross- off | cross- off | cross- on | on | cross | cross | cross | cross- off | cross- off | cross | cross- off | cross- off | cross- off | |
High Tide / height (m) | 6:03AM 0.79 | 9:47AM 0.84 | 10:40AM 0.93 | 11:15AM 1.02 | 12:31AM 0.44 | 11:45AM 1.09 | 12:27AM 0.49 | 12:14PM 1.13 | 12:37AM 0.54 | 12:42PM 1.15 | ||||||||||||
Low Tide / height (m) | 9:50PM 0.29 | 9:59PM 0.31 | 9:38PM 0.34 | 8:22PM 0.35 | 7:47PM 3:25AM 0.33 0.42 | 7:40PM 0.31 | 4:38AM 0.37 | 7:44PM 0.30 | 5:27AM 0.31 | |||||||||||||
Sunday 03 | Monday 04 | Tuesday 05 | Wednesday 06 | Thursday 07 | Friday 08 | Sat 09 | ||||||||||||||||
| Sunrise | - | 7:16 | - | - | 7:16 | - | - | 7:15 | - | - | 7:13 | - | - | 7:13 | - | - | 7:11 | - | - | 7:11 | - | |
| Sunset | - | - | 5:37 | - | - | 5:38 | - | - | 5:39 | - | - | 5:40 | - | - | 5:40 | - | - | 5:42 | - | - | 5:43 | |
 |  | |  | |  |  |  | | |  | |  | | |  | | | | | | ||
Rain (mm) | - | - | - | 1 | - | 3 | 3 | - | - | 4 | - | - | - | - | - | - | - | - | - | - | - | |
| Temp. °C | 10 | 14 | 14 | 15 | 13 | 13 | 12 | 14 | 14 | 13 | 12 | 12 | 12 | 13 | 13 | 12 | 12 | 11 | 12 | 15 | 15 | |
| Feels °C (?) | 6 | 6 | 6 | 7 | 3 | 5 | 6 | 7 | 8 | 8 | 7 | 7 | 9 | 9 | 8 | 8 | 8 | 5 | 9 | 11 | 11 | |
- Map Icons:
Break
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 - Kangaroo Island
Continuing clean conditions at Cape Kersaint (light winds from the WSW at KingstoneAero 50 km from Cape Kersaint). A 1.8m groundswell from the SW
50 km away, 1 h 4 min ago
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 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.
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 12 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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