Surf Forecasts:
Pennington Bay surf forecast from 26 Aug 2026:
- Best quality surf: Thursday 27 Aug, 6PM (local time) - 3.5ft (1.0m), 19s period, SSW swell with cross-offshore winds.
- Most powerful swell: Monday 31 Aug, 3PM (local time) - 6.5ft (2.0m), 17s period, S swell with 2,428 kJ wave energy.
- Next surfable swell (1★+): Wednesday 26 Aug, 12PM (local time) - 4.5ft (1.4m), 13s period with SSW swell.
Best Forecast Surf Conditions for Pennington Bay this week:
The surf forecast for Pennington Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 26) at 12PM. The primary swell is predicted to be 1.4m and 13s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Pennington Bay in the next 16 days are 2.0m 17s and forecast to arrive on Monday (Aug 31) at 3PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Tuesday (Sep 01) at 9AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Wed 26th Aug) | 4.5ft (1.4m) 13s |
| Best Surf | 6PM (Thu 27th Aug) | 3.5ft (1.0m) 19s |
| Most Powerful | 3PM (Mon 31st Aug) | 6.5ft (2.0m) 17s |
Table - best surf conditions forecast for Pennington Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's cookin' for our stretch of coast over the next couple of weeks. The first few days are pretty ordinary, but there's some proper grunt on the way if you can wait for it.
We're starting off with a bit of a slow burner. Wednesday the 26th and Thursday the 27th offer nothing to get excited about. The swell is around 3 to 5 feet with a weak, unimpressive energy. Winds are mostly cross or cross-off, but the quality just isn't there to make it worthwhile. You'd be doing more paddlin' than surfin'. We've got a gap there for a couple of days until things start to look interesting.
Now, Friday the 28th things get real. That’s your standout window right there. We've got a solid 6 feet of SSW groundswell pumping in with a long 17-second period, and the energy is strong, building to about (1703). Come the afternoon, the wind drops to glassy – dead glassy – and the swell is still a clean 5 feet. The water temp is sitting at a pretty normal 59° for this time of year, nothing unusual there. This is the one you want to clear your schedule for. It's a little punchy, so more for the experienced crew, but the conditions will be mint.
Through the weekend, it's a mixed bag. Saturday the 29th is a write-off with onshore slop. Sunday the 30th gets a bit of a rebound though: the morning is cross-shore with 4 feet, and the afternoon shows a jump to a 5 feet groundswell with a very long 17-second period and some real grunt behind it (2697). That afternoon session at Pennington Bay looks like the real deal with clean, gentle cross-shore conditions. It'll be a bit shifty on the sandbar with that long period, but the power is there.
Monday the 31st is your second top pick. Clean, clean, clean. A solid 5 to 6 feet S swell, 15 to 17-second period, and light to moderate offshore wind from the north. The wave energy is cranking – up around (2196) in the arvo. This is big, powerful, and clean; it's a proper groundswell, so the sandbar at Pennington Bay might get a bit straight, but it'll be well-shaped and the paddling will be easy between sets. This one is for the experienced surfers exclusively.
The first week of September is pretty average. The 1st and 2nd of September are plagued by fresh onshore winds and choppy conditions, not worth the effort. The 3rd sees rain and howling onshores with a messy 7 to 8 feet – just ugly.
Now, for the second week – and this is a big one – we've got a monster pulse showing up around the 4th and 5th of September. The swell is predicted to be a massive 10 to 12 feet. That kind of size is pure big-wave territory and frankly, it's just too much for the break. The energy numbers are off the charts (up to 8649), so if you’re a proper charger, Friday the 4th has light offshore winds and 12 feet. But let's be clear: this is only for experts, and even then, it's on the ragged edge. It settles down a touch by Saturday the 5th with a 10 feet SSW swell and clean cross-off winds in the afternoon – a good day for the very experienced.
After that, early the next week (6th and 7th September) we see the swell dropping back to a more manageable 4 to 7 feet, but the wind window gets tricky again, with onshore slop returning on Monday. Then we see another big, windy, and messy pulse around the 8th, 9th, and 10th. If you’re a hardcore big-wave surfer, the 10th of September has a 10 feet S groundswell and glassy conditions in the afternoon – that's another window for the brave, but it’s a long way out and less certain.
Summin' it up: Friday the 28th and Monday the 31st of August are your absolute best bets for good, clean power without the ridiculous size. After that, it gets big and rowdy.
Rusty, signing off.
Short Range ForecastMostly dry. Very mild (max 16°C on Fri morning, min 12°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 17°C on Mon night, min 12°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | |||||||||||||||
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) | SSW 13 | S 13 | S 14 | S 14 | SSW 20 | SSW 18 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | S 13 | S 13 | S 13 | S 17 | S 17 | S 16 | S 17 | S 16 | S 16 | S 15 | SSW 16 |
Wave Graph | |||||||||||||||||||||
700 | 483 | 515 | 394 | 529 | 1929 | 1676 | 1348 | 754 | 622 | 361 | 345 | 398 | 1344 | 1660 | 1380 | 2428 | 1459 | 967 | 773 | 1016 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross-off | cross-off | cross-off | off | glassy | cross-on | cross | cross-on | cross | cross | cross | cross-off | off | cross-off | cross-off | cross-off | cross-off | glassy |
High Tide | 3:05PM1.22m | 5:01AM0.90m | 3:43PM1.29m | 5:01AM1.01m | 4:16PM1.34m | 5:11AM1.12m | 4:47PM1.35m | 5:26AM1.24m | 5:17PM1.31m | 5:45AM1.35m | 5:44PM1.23m | 6:06AM1.43m | 6:09PM1.11m | ||||||||
Low Tide | 10:22PM0.21m | 9:31AM0.64m | 10:37PM0.20m | 10:07AM0.55m | 10:53PM0.20m | 10:40AM0.46m | 11:10PM0.23m | 11:13AM0.39m | 11:26PM0.26m | 11:47AM0.35m | 11:41PM0.29m | 12:22PM0.35m | 11:53PM0.32m | ||||||||
6:48 | — | — | 6:47 | — | — | 6:45 | — | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | |
— | 5:53 | — | — | 5:54 | — | — | 5:54 | — | — | 5:55 | — | — | 5:57 | — | — | 5:58 | — | — | 5:58 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 12 | 14 | 15 | 15 | 16 | 16 | 15 | 14 | 14 | 12 | 13 | 14 | 13 | 14 | 16 | 17 | 18 | 19 | 17 |
Feels °C | 12 | 12 | 9 | 11 | 11 | 12 | 15 | 15 | 13 | 13 | 13 | 10 | 10 | 11 | 10 | 10 | 13 | 14 | 12 | 15 | 15 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | S 13 | S 14 | S 14 | SSW 14 | SSW 18 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | S 13 | S 13 | S 13 | S 17 | S 17 | S 16 | S 17 | S 16 | S 16 | S 15 | SSW 16 |
700 | 483 | 515 | 394 | 529 | 1929 | 1676 | 1348 | 754 | 622 | 361 | 345 | 398 | 1344 | 1660 | 1380 | 2428 | 1459 | 967 | 773 | 1016 | |
Swell 2 Height (m) Direction Period (s) | — | S 16 | S 24 | SSW 21 | SSW 20 | SSE 8 | SSE 8 | SSE 8 | SE 7 | S 23 | S 23 | SSW 21 | S 20 | SSW 18 | SSW 22 | S 19 | SSW 18 | — | — | — | W 7 |
— | 131 | 11 | 153 | 507 | 6 | 6 | 6 | 2 | 11 | 41 | 151 | 276 | 655 | 154 | 722 | 1501 | — | — | — | 14 | |
Swell 3 Height (m) Direction Period (s) | — | — | SW 24 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | 22 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | N 3 | N 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | NNW 4 | NNW 4 | SSE 4 |
— | — | — | 5 | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | 29 | 19 | 30 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 54 | 59 | 54 | 54 | 54 | 59 | 59 | 57 | 54 | 54 | 57 | 57 | 57 | 99 | 54 | 59 | 59 | 54 | 94 | 59 | 54 |
Best forecast wave conditions in Kangaroo Island | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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Information about the Pennington Bay Surf forecast
The above surf forecast table for Pennington Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Pennington Bay can be found by selecting the local surf guide option on the grey menu. Our Pennington Bay 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 (Pennington Bay) 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 Pennington Bay 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 Pennington Bay, camping, hotels and holiday cottages in Kangaroo Island, consider staying in Kingscote which is 25 km (16 miles) away. Alternatively, find information about places to stay and car hire in Rapid Bay which is 54 km (34 miles) away











