Surf Forecasts:
Pennington Bay surf forecast from 4 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 9AM (local time) - 11ft (3.5m), 21s period, S swell with cross-onshore winds.
- Most powerful swell: Wednesday 9 Sep, 9AM (local time) - 11ft (3.5m), 21s period, S swell with 10,817 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 3PM (local time) - 8ft (2.5m), 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 Friday (Sep 04) at 3PM. The primary swell is predicted to be 2.5m and 16s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Pennington Bay in the next 16 days are 3.5m 21s and forecast to arrive on Wednesday (Sep 09) 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 1.1m 4s period and expected on Saturday (Sep 05) at 3AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Fri 4th Sep) | 8ft (2.5m) 16s |
| Best Surf | 9AM (Wed 9th Sep) | 11ft (3.5m) 21s |
| Most Powerful | 9AM (Wed 9th Sep) | 11ft (3.5m) 21s |
Table - best surf conditions forecast for Pennington Bay over the next 16 days.
The Lowdown
G'day, Rusty here. Let's take a look at what Pennington Bay has in store for us.
Water temp is 59°, which is about normal for this time of year.
There's a bit of a wait for anything worthwhile. The first real chance is Friday the 4th. Morning brings a solid 10ft south groundswell with a long 16 second interval, packing a heap of energy (3817), but it's a bit on the big side with a moderate cross-off breeze. Friday afternoon cleans right up with 8ft south swell and a moderate offshore wind, making for some clean, powerful waves that only experienced surfers should paddle into. That afternoon is the standout of the early window.
Saturday the 5th is a total loss with a nasty 25 mph west wind, so don't bother. Sunday the 6th has a light cross-on and 7ft swell, but it's messy and not worth the drive.
The next good one is Tuesday the 8th. The morning is excellent for experienced surfers – a 6ft south groundswell with a very long 17 second period, moderate energy (2171), and a light cross-off wind keeping the surface clean. That long period means the sets will be less frequent, but the shape will be there.
Wednesday the 9th and Thursday the 10th bring a dangerous pulse of swell – 12ft of south energy with a 21 second period on Wednesday morning, combined energy is absolutely enormous at (21076). This is way too big for the sandbar at Pennington Bay. The kite boarders might be loving it, but for paddle surfing, it's a no-go. The wind is messy Wednesday, but Thursday morning is clean with cross-off wind. Still, it's just too much. Friday the 11th is a good day with 7ft south swell and clean, cross-off wind – quality conditions for the experienced crew.
Second week settles down. Saturday the 12th sees a gentle offshore breeze and a clean 5ft south swell, good for a fun session. Sunday the 13th keeps the offshore wind in play with 4ft swell, nice and clean. The tail end of the week is a mixed bag before another big pulse of 12ft south swell arrives Wednesday the 16th. The afternoon of the 16th is glassy, but 10ft is still serious size. The best of the second week looks like Saturday the 19th, with a moderate offshore breeze and a solid 8ft SSW swell with a long period – that's going to be a clean, punchy session for surfers who know the lineup.
Keep an eye on the tides, and I'll see you out there.
Rusty.
Short Range ForecastSome drizzle, heaviest during Sat morning. Very mild (max 16°C on Fri afternoon, min 12°C on Fri night). Winds decreasing (strong winds from the WNW on Fri night, light winds from the SW by Sun afternoon). | Days 4-6 Weather SummaryMostly dry. Very mild (max 13°C on Mon morning, min 9°C on Wed night). Winds increasing (light winds from the ESE on Tue morning, fresh winds from the SSE by Wed morning). | ||||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | |||||||||||||||
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 16 | S 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | S 14 | S 13 | S 14 | S 19 | S 17 | S 16 | S 16 | SSW 21 | S 19 | S 18 | S 17 | S 16 | S 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 3817 | 3302 | 2233 | 3204 | 2955 | 2665 | 1715 | 1307 | 861 | 490 | 447 | 2357 | 2171 | 1951 | 2231 | 10817 | 9044 | 9608 | 6866 | 4829 | 2960 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | cross | cross-off | cross-on | on | cross-on | cross-on | cross | cross-off | cross | cross |
High Tide | 5:55PM0.66m | 7:59AM1.37m | 8:39AM1.25m | 10:08AM1.12m | 2:37PM1.15m | 5:56AM0.86m | 3:24PM1.21m | 5:10AM0.90m | 3:56PM1.23m | ||||||||||||
Low Tide | 2:34PM0.58m | 11:53PM0.32m | 11:33PM0.28m | 11:10PM0.25m | 10:51PM0.24m | 10:40PM0.25m | 9:03AM0.78m | 10:36PM0.28m | 9:41AM0.64m | 10:36PM0.31m | |||||||||||
 | |  |  |  | | |  | | | |  | | |  | | | | | | | |
 | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:26 | — | — |
 | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:02 | — | — | 6:04 | — | — | 6:04 | — | — | 6:05 | — |
mm | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 16 | 15 | 14 | 14 | 13 | 14 | 14 | 13 | 13 | 13 | 11 | 12 | 12 | 12 | 11 | 11 | 10 | 10 | 10 | 11 |
Feels °C | 10 | 11 | 11 | 5 | 6 | 8 | 11 | 12 | 9 | 10 | 10 | 8 | 10 | 10 | 8 | 3 | 4 | 4 | 6 | 6 | 7 |
Swell 1 Height (m) Direction Period (s) | S 16 | S 16 | S 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | S 14 | S 13 | S 14 | S 19 | S 17 | S 16 | S 16 | SSW 21 | S 19 | S 18 | S 17 | S 16 | S 15 |
| kJ | 3817 | 3302 | 2233 | 1471 | 1090 | 2665 | 1715 | 1307 | 861 | 490 | 447 | 2357 | 2171 | 1951 | 2231 | 10259 | 9044 | 9608 | 6866 | 4829 | 2960 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | SW 20 | — | — | S 23 | SSW 21 | S 20 | SSW 19 | — | — | S 26 | — | — | SSW 22 | — | — | S 26 |
| kJ | — | — | — | — | — | 60 | — | — | 10 | 90 | 305 | 1196 | — | — | 207 | — | — | 1928 | — | — | 13 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | NNW 4 | SSW 15 | SSW 14 | — | — | — | — | — | — | — | — | — | — | S 21 | SSE 7 | — | — | — | E 4 |
| kJ | — | — | 8 | 3204 | 2955 | — | — | — | — | — | — | — | — | — | — | 10817 | 187 | — | — | — | 7 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 87 | 81 | 544 | 932 | 1097 | 607 | 57 | 57 | 57 | 57 | 57 | 92 | 57 | 77 | 57 | 1097 | 1370 | 117 | 107 | 107 | 81 |
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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