Surf Forecasts:
Pennington Bay surf forecast from 29 Aug 2026:
- Best quality surf: Thursday 3 Sep, 6AM (local time) - 11ft (3.5m), 14s period, SW swell with cross-shore winds.
- Most powerful swell: Saturday 5 Sep, 6AM (local time) - 8ft (2.5m), 17s period, S swell with 4,273 kJ wave energy.
- Next surfable swell (1★+): Monday 31 Aug, 12AM (local time) - 6ft (1.8m), 16s period with S 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 Monday (Aug 31) at 12AM. The primary swell is predicted to be 1.8m and 16s period with a secondary swell of 0.4m and 21s. 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 2.5m 17s and forecast to arrive on Saturday (Sep 05) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Friday (Sep 04) at 12PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Mon 31st Aug) | 6ft (1.8m) 16s |
| Best Surf | 6AM (Thu 3rd Sep) | 11ft (3.5m) 14s |
| Most Powerful | 6AM (Sat 5th Sep) | 8ft (2.5m) 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 coming down the pipe for Pennington Bay over the next couple of weeks.
We've got a real mixed bag of a forecast. The good stuff doesn't kick in until the end of the month, but there's a couple of windows where it's going to get really fun. The water temp is sitting at 58°F, which is bang on average for late August, so not too chilly.
The only real standout on offer kicks off on Monday the 31st of August. Morning light offshores from the NE will groom a clean 6ft south swell with a long 15-second period. The combined energy is strong at 2124, and it's carrying plenty of push for a point or reef setup. By the afternoon, it's cleaning up even more with N winds and the swell building to 7ft from the south, period stretching out to 17 seconds and energy hitting 2428. That's a solid run of excellent conditions, but this size is really for experienced surfers only – too much punch for the beginners.
Before that, Saturday the 29th is a slight teaser. A clean 4ft south swell with a period of 14 seconds (energy at 613) and light E cross-off winds will make for some fun, small waves. It's enough to get wet, but not the main event.
Be warned, after the Monday standouts, the wind gets real nasty. A strong NW change Tuesday morning will blow 19 mph right through to the weekend, keeping things messy or too blown out for paddle surfing. For a sandbar setup like this, the 10ft+ onshore slop that shows up from the 5th of September onward looks way more like a kiteboarding session than a surf. By Sunday the 6th, we're looking at a massive 12ft to 13ft SSW swell with brutal offshore winds over 25 mph – clean but absolutely pumping, and way too big for this break.
Things do settle down a little in the second week. Wednesday the 9th of September is a bit of a wildcard. The afternoon looks glassy with a 5ft south swell and a very long period of 19 seconds (energy 2514). That long period means the sets will be lined up, but it might break a bit straight on a sandbar like this. Best for the reefs, if you can find one. Then Saturday the 12th offers a cleaner 6ft south swell in the morning, though the cross-off wind is a bit stiff at 16 mph.
Overall, lock in that Monday the 31st and the morning of the 1st of September for your best chance at a proper session. The rest is a battle with onshore wind or just too much size.
- Rusty
Short Range ForecastMostly dry. Very mild (max 16°C on Mon afternoon, min 11°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Thu morning. Very mild (max 18°C on Tue morning, min 10°C on Tue night). Mainly fresh winds. | ||||||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | |||||||||||||||
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) | S 14 | S 13 | S 13 | S 13 | S 17 | S 16 | S 15 | S 17 | S 16 | S 16 | S 15 | SSW 15 | S 16 | SSW 15 | SSW 14 | SSW 14 | S 14 | S 14 | S 15 | S 15 | S 15 |
Wave Graph | |||||||||||||||||||||
602 | 434 | 345 | 572 | 1422 | 1730 | 1386 | 2428 | 1630 | 942 | 753 | 796 | 1131 | 1825 | 1419 | 1704 | 1807 | 2061 | 1959 | 1568 | 1246 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross | cross-on | cross-off | off | off | off | cross-off | cross-off | on | cross | cross | cross | cross | cross | cross-off | off | cross-off | cross-on |
High Tide | 4:47PM1.35m | 5:26AM1.24m | 5:17PM1.31m | 5:45AM1.35m | 5:44PM1.23m | 6:06AM1.43m | 6:09PM1.11m | 6:31AM1.49m | 6:30PM0.95m | 6:58AM1.49m | 6:37PM0.79m | 7:26AM1.46m | 5:55PM0.66m | ||||||||
Low Tide | 10:40AM0.46m | 11:10PM0.23m | 11:13AM0.39m | 11:26PM0.26m | 11:47AM0.35m | 11:41PM0.29m | 12:22PM0.35m | 11:53PM0.32m | 1:00PM0.39m | 00:02AM0.33m | 1:42PM0.47m | 00:03AM0.33m | 2:34PM0.58m | 11:53PM0.32m | |||||||
6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:37 | — | — | 6:37 | — | — | 6:35 | — | — | |
— | 5:55 | — | — | 5:57 | — | — | 5:58 | — | — | 5:58 | — | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | 2 | — | 1 |
Temp °C | 14 | 14 | 12 | 13 | 14 | 12 | 14 | 16 | 16 | 18 | 18 | 13 | 15 | 15 | 14 | 15 | 16 | 14 | 14 | 17 | 16 |
Feels °C | 12 | 12 | 10 | 11 | 11 | 9 | 11 | 13 | 13 | 11 | 13 | 10 | 11 | 10 | 11 | 12 | 13 | 11 | 7 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | S 14 | S 13 | S 13 | S 13 | S 17 | S 16 | S 15 | S 17 | S 16 | S 16 | S 15 | SSW 15 | S 16 | SSW 15 | SSW 14 | SSW 14 | S 14 | S 14 | S 15 | S 15 | S 15 |
602 | 434 | 345 | 572 | 1422 | 1730 | 1386 | 2428 | 1630 | 942 | 753 | 796 | 1131 | 1825 | 1419 | 1704 | 1807 | 2061 | 1959 | 1568 | 1246 | |
Swell 2 Height (m) Direction Period (s) | S 23 | S 23 | SSW 21 | S 20 | — | SSW 21 | S 19 | — | — | — | W 6 | — | SW 6 | — | — | — | — | — | — | — | — |
11 | 41 | 151 | 276 | — | 153 | 738 | — | — | — | 1 | — | 32 | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | N 4 | NNW 5 | SW 4 | SW 6 | — | WNW 3 | — | — | — | N 4 | N 5 | SW 8 |
— | — | — | — | — | — | — | — | — | 41 | 50 | 17 | 43 | — | 9 | — | — | — | 19 | 59 | 427 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 57 | 99 | 57 | 54 | 99 | 54 | 59 | 59 | 54 | 89 | 59 | 445 | 488 | 96 | 87 | 87 | 87 | 71 | 89 | 77 | 1097 |
Best forecast wave conditions in Kangaroo Island | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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











