Surf Forecasts:
Pennington Bay surf forecast from 14 Aug 2026:
- Best quality surf: Monday 17 Aug, 12AM (local time) - 5ft (1.5m), 14s period, S swell with cross-offshore winds.
- Most powerful swell: Friday 14 Aug, 6PM (local time) - 8ft (2.5m), 16s period, S swell with 3,143 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 12AM (local time) - 5ft (1.5m), 14s 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 17) at 12AM. The primary swell is predicted to be 1.5m and 14s period with a secondary swell of 0.1m and 26s. Another secondary swell of 0.5m and 4s is also forecast. 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 16s and forecast to arrive on Friday (Aug 14) at 6PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 5s period and expected on Tuesday (Aug 18) at 9PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Mon 17th Aug) | 5ft (1.5m) 14s |
| Best Surf | 12AM (Mon 17th Aug) | 5ft (1.5m) 14s |
| Most Powerful | 6PM (Fri 14th Aug) | 8ft (2.5m) 16s |
Table - best surf conditions forecast for Pennington Bay over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s talk about what’s coming for Pennington Bay. It’s a sandbar, fairly exposed to the south, and it can handle a decent push. Water temp is about 15°, pretty normal for this time of year.
We get started Friday the 14th of August with a solid 8ft south swell (16-second period) packing serious energy (3396). Problem is, the wind is cross-on, so it’s choppy. It’s surfable, but not special.
Saturday the 15th drops to 7ft and then 7ft, but with cross-shore chop building. Sunday the 16th is 5ft but still bumpy.
Then Monday the 17th of August turns it around. The swell is 5ft south, but the wind switches cross-offshore, cleaning up the surface. The afternoon is even better at 5ft from the SSW, still clean. This is a solid, tidy session.
Tuesday the 18th has a strong offshore breeze (30 km/h) and a 4ft south swell with a long 17-second period. The morning is clean but small. The afternoon gets blown out.
A quiet stretch hits from Wednesday the 19th to Friday the 21st. Swells drop under 3ft, then come back to 6ft but with cross-on wind. However, Thursday the 20th afternoon is glassy with a 4ft swell—a sneaky good one.
Saturday the 22nd is messy with strong onshore wind and 8ft swell.
The real standout is Sunday the 23rd of August. Light cross-off wind from the NNW, 7ft south swell, clean, and moderate energy (1860). The call is excellent for experienced surfers. That’s the one.
Monday the 24th follows with 6ft south swell, clean, good backup.
Tuesday the 25th sees a massive 13ft swell with onshore wind—too big for this break.
Wednesday the 26th is still big at 10ft but choppy.
Into the second week, there’s a clean window on Thursday the 27th morning: 5ft south swell, cross-off breeze, very good. Then Friday the 28th of August is another standout. A 7ft south swell with an 18-second period (a proper groundswell), light cross-off winds, clean, and strong energy (2746). For a point or reef this would be dreamy, but at Pennington Bay you’ll still get plenty of good ones. The afternoon holds similar quality.
Saturday the 29th winds down with smaller, clean conditions—5ft to 4ft south swells with light offshore breezes.
Best bets: Sunday the 23rd, Monday the 24th, and Friday the 28th of August. If you can only pick one, go Sunday the 23rd or Friday the 28th.
Rusty.
Short Range ForecastMostly dry. Very mild (max 15°C on Fri morning, min 12°C on Sat morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Tue afternoon. Very mild (max 15°C on Mon afternoon, min 11°C on Wed night). Winds decreasing (fresh winds from the NE on Tue night, light winds from the W by Wed night). | ||||||||||||||||||||
Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | |||||||||||||||
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 16 | S 16 | S 15 | S 14 | S 14 | S 14 | S 14 | S 16 | SSW 16 | SSW 15 | S 17 | S 16 | SSW 16 | SSW 15 | SSW 15 | SSW 18 | SSW 16 | SSW 16 | SSW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 3396 | 3143 | 3103 | 2322 | 1877 | 1492 | 1072 | 1045 | 881 | 1301 | 1016 | 639 | 879 | 542 | 337 | 304 | 284 | 337 | 793 | 628 | 1025 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | off | off | off | off | cross-off | cross | cross-on | cross | glassy | cross-on |
High Tide | 5:06PM1.35m | 5:45AM1.12m | 5:31PM1.30m | 6:01AM1.24m | 5:53PM1.22m | 6:22AM1.35m | 6:13PM1.14m | 6:47AM1.42m | 6:32PM1.03m | 7:16AM1.43m | 6:49PM0.92m | 7:48AM1.40m | 6:59PM0.80m | ||||||||
Low Tide | 10:44AM0.54m | 11:36PM0.34m | 11:18AM0.48m | 11:44PM0.35m | 11:52AM0.45m | 11:55PM0.33m | 12:26PM0.45m | 00:09AM0.31m | 1:02PM0.47m | 00:24AM0.29m | 1:39PM0.52m | 00:39AM0.28m | 2:22PM0.58m | 00:51AM0.30m | |||||||
 | |  |  | | | | |  | | | | |  |  | |  |  | | | | |
 | 7:03 | — | — | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — |
 | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — | 5:49 | — | — | 5:49 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 3 | — | — | — | — | — | — |
Temp °C | 15 | 14 | 13 | 12 | 12 | 13 | 12 | 12 | 13 | 14 | 15 | 14 | 15 | 15 | 15 | 15 | 15 | 13 | 14 | 13 | 12 |
Feels °C | 13 | 12 | 11 | 9 | 7 | 8 | 7 | 7 | 11 | 10 | 12 | 9 | 9 | 8 | 9 | 12 | 12 | 11 | 12 | 12 | 10 |
Swell 1 Height (m) Direction Period (s) | S 16 | S 16 | S 16 | S 16 | S 15 | S 14 | S 14 | S 14 | S 14 | S 16 | SSW 16 | SSW 15 | S 17 | S 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 16 | SSW 16 | SSW 16 |
| kJ | 3396 | 3143 | 3103 | 2322 | 1877 | 1492 | 1072 | 1045 | 881 | 1301 | 1016 | 639 | 879 | 542 | 337 | 304 | 284 | 229 | 793 | 628 | 1025 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | S 26 | S 24 | S 22 | S 19 | SE 6 | SE 7 | SE 7 | SE 7 | SSW 20 | SSW 18 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 13 | 44 | 236 | 470 | 1 | 2 | 2 | 2 | 80 | 337 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | S 10 | SSE 6 | — | — | — | — | — | NNE 4 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 50 | 6 | — | — | — | — | — | 2 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | ESE 3 | — | ESE 3 | — | SE 4 | E 3 | ESE 5 | ENE 4 | NE 5 | NE 5 | NNE 5 | NNE 4 | N 4 | — | SW 4 | SW 4 | — |
| kJ | — | — | — | — | 3 | — | 3 | — | 8 | 8 | 33 | 25 | 59 | 51 | 110 | 31 | 12 | — | 17 | 16 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 57 | 57 | 57 | 57 | 107 | 92 | 57 | 107 | 54 | 54 | 54 | 92 | 92 | 81 | 92 | 59 | 59 | 54 | 54 | 97 | 57 |
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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