Surf Forecasts:
Pennington Bay surf forecast from 1 Sep 2026:
- Best quality surf: Friday 4 Sep, 12AM (local time) - 10ft (3.0m), 15s period, S swell with cross-offshore winds.
- Most powerful swell: Saturday 5 Sep, 9AM (local time) - 15ft (4.5m), 14s period, SW swell with 7,579 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 12AM (local time) - 10ft (3.0m), 15s 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 Friday (Sep 04) at 12AM. The primary swell is predicted to be 3.0m and 15s 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 4.5m 14s and forecast to arrive on Saturday (Sep 05) at 9AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Sunday (Sep 06) at 9PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Fri 4th Sep) | 10ft (3.0m) 15s |
| Best Surf | 12AM (Fri 4th Sep) | 10ft (3.0m) 15s |
| Most Powerful | 9AM (Sat 5th Sep) | 15ft (4.5m) 14s |
Table - best surf conditions forecast for Pennington Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a look at what’s cooking at Pennington Bay for the next 16 days. The first bit is a rough stretch, so don't get too excited early on. You’ve got to hold out for the good stuff that shows up about a week in, and there is a long gap of poor conditions before that.
The early part of this forecast, from Tuesday the 1st through Saturday the 5th of September, is pretty much a write-off. We get some size, with swell heights hitting 3.0m to 4.5m, but the wind is all wrong – cross, cross-on, and straight-on at times – creating a nasty, choppy mess. The combined energy is strong in the early days (942 range), but it’s just too rough and windy for comfortable paddling. If you’re into kite-surfing, this might look interesting, but for a regular surfer, you’re better off staying home.
The first real hope arrives on Sunday the 6th of September. The morning brings a clean 2.1m South swell with a 14-second period and a nice offshore wind (NNE at 12 mph). The combined energy is moderate at 1884, meaning it has some punch but isn't crazy. The afternoon is lighter at 1.6m and stays clean. This is the first day you can actually plan a session.
Now, the real standout, the one you should save your energy for, is Friday the 11th of September. That morning is shaping up perfectly: a clean 2.0m South swell with a long 17-second period and a light cross-off breeze. Combined energy is strong at 2290. That long period means proper groundswell with real shape and power. The afternoon gets even better – glassy conditions, zero wind, with a 2.0m, 16-second South swell and combined energy of 2053. This is the top of the whole run: good size, good direction, and glassy-clean. Expect the lineup to be busy; quality like this always draws a crowd.
The following week has a few smaller but still nice options. Sunday the 13th of September afternoon is a treat for a log – offshore winds and a tiny 0.8m swell. Then we hit another rough patch Monday the 14th and Tuesday the 15th with strong on and cross-on wind. But don't sleep on Wednesday the 16th of September morning. That’s a glassy start with a clean 1.4m, 15-second SSW swell and combined energy of 889. Small, but beautiful for a quiet session.
So here’s the takeaway: the first five days are a stormy mess you should skip. The big, standout day is Friday the 11th of September – that’s your best bet for an excellent, clean session. The water temp is about 59°F, which is normal for the season.
Keep your powder dry, skip the early blowout, and wait for that Friday glass.
Rusty.
Short Range ForecastSome drizzle, heaviest during Tue afternoon. Very mild (max 17°C on Tue morning, min 12°C on Wed morning). Winds decreasing (fresh winds from the NNW on Tue morning, light winds from the NNW by Thu night). | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Sun night. Very mild (max 17°C on Fri afternoon, min 10°C on Sat night). Winds decreasing (fresh winds from the WSW on Fri night, calm by Sat night). | ||||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | |||||||||||||||
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 16 | S 15 | S 17 | S 16 | S 15 | S 14 | SSW 14 | S 14 | S 15 | S 15 | S 15 | S 15 | SW 14 | S 15 | S 15 | S 14 | S 14 | S 14 | SSW 13 | SSW 14 | SSW 19 |
Wave Graph  | |||||||||||||||||||||
 kJ | 942 | 644 | 969 | 1787 | 1787 | 1858 | 3633 | 3108 | 3529 | 3420 | 2942 | 1985 | 7579 | 4350 | 3282 | 1884 | 1004 | 474 | 295 | 421 | 4318 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | on | cross | cross | cross | cross-on | cross-on | cross-off | cross-off | cross-off | cross | cross-on | cross-on | glassy | off | cross-off | cross | cross | cross | cross-on |
High Tide | 6:09PM1.11m | 6:31AM1.49m | 6:30PM0.95m | 6:58AM1.49m | 6:37PM0.79m | 7:26AM1.46m | 5:55PM0.66m | 7:59AM1.37m | 8:39AM1.25m | 10:08AM1.12m | |||||||||||
Low Tide | 12:22PM0.35m | 11:53PM0.32m | 1:00PM0.39m | 00:02AM0.33m | 1:42PM0.47m | 00:03AM0.33m | 2:34PM0.58m | 11:53PM0.32m | 11:33PM0.28m | 11:10PM0.25m | 10:51PM0.24m | ||||||||||
 |  |  |  | | | | |  |  | | | | | | | |  | | |  | |
 | 6:39 | — | — | 6:37 | — | — | 6:37 | — | — | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — | 6:31 | — | — |
 | — | 5:58 | — | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:02 | — |
mm | — | 1 | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | 3 | 5 | 3 | — |
Temp °C | 17 | 16 | 13 | 14 | 15 | 14 | 15 | 14 | 13 | 14 | 17 | 15 | 14 | 14 | 11 | 13 | 15 | 16 | 14 | 14 | 14 |
Feels °C | 10 | 12 | 10 | 9 | 9 | 8 | 10 | 9 | 9 | 10 | 13 | 12 | 8 | 9 | 8 | 9 | 12 | 14 | 10 | 11 | 10 |
Swell 1 Height (m) Direction Period (s) | S 16 | S 15 | S 17 | S 16 | S 15 | S 14 | SSW 14 | S 14 | S 15 | S 15 | S 15 | S 15 | SSW 14 | S 15 | S 15 | S 14 | S 14 | S 14 | SSW 13 | SSW 14 | — |
| kJ | 942 | 644 | 969 | 1787 | 1787 | 1858 | 2702 | 3108 | 3529 | 3420 | 2942 | 1985 | 3519 | 4350 | 3282 | 1884 | 1004 | 474 | 295 | 421 | — |
Swell 2 Height (m) Direction Period (s) | — | SSW 19 | — | SSW 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | E 5 | ESE 4 | S 8 | — |
| kJ | — | 122 | — | 25 | — | — | — | — | — | — | — | — | — | — | — | — | — | 24 | 6 | 21 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 23 | N 4 | SSW 20 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 11 | 3 | 136 | — |
Wind waves Height (m) Direction Period (s) | N 5 | NNW 4 | SSW 4 | SW 5 | — | WNW 4 | SSW 14 | — | — | — | N 4 | NW 4 | SW 14 | — | — | NNE 3 | NE 4 | N 4 | NNW 3 | — | SSW 19 |
| kJ | 52 | 15 | 11 | 40 | — | 18 | 3633 | — | — | — | 10 | 8 | 7579 | — | — | 8 | 20 | 23 | 1 | — | 4318 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 626 | 59 | 57 | 83 | 439 | 626 | 607 | 87 | 77 | 87 | 97 | 658 | 1120 | 1101 | 57 | 71 | 54 | 57 | 320 | 92 | 231 |
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
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