
Surf Forecasts:
Pennington Bay surf forecast from 16 Sep 2026:
- Best quality surf: Thursday 17 Sep, 3AM (local time) - 7ft (2.2m), 15s period, S swell with cross-offshore winds.
- Most powerful swell: Tuesday 22 Sep, 12PM (local time) - 10ft (3.0m), 17s period, S swell with 4,361 kJ wave energy.
- Next surfable swell (1★+): Thursday 17 Sep, 3AM (local time) - 7ft (2.2m), 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 Thursday (Sep 17) at 3AM. The primary swell is predicted to be 2.2m 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 3.0m 17s and forecast to arrive on Tuesday (Sep 22) at 12PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Tuesday (Sep 22) at 9AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Thu 17th Sep) | 7ft (2.2m) 15s |
| Best Surf | 3AM (Thu 17th Sep) | 7ft (2.2m) 15s |
| Most Powerful | 12PM (Tue 22nd Sep) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Pennington Bay over the next 16 days.
The Lowdown
Righto, let’s have a look at what’s coming up for Pennington Bay.
We've got a bit of a slow start here, but once the wind plays ball, this place can fire. The water temp is sitting around 59°, which is about a degree and a half warmer than average for the time of year – feels pretty standard, nothing wild.
The first decent window kicks off on the Thursday morning. Swell is dropping from 6ft out of the south, with a 14-second period, giving that combo moderate wave energy (1427). Wind is light and cross-offshore, so conditions will be clean. This is solid for experienced surfers, but the size and power might be a bit much for beginners. The afternoon cleans up even more with a gentle offshore breeze, and the swell backs off to 6ft – that’s a really nice session for those who know what they’re doing. Crowds can gather here often, so get out early.
Friday morning still has clean conditions with a cross-offshore breeze, but the swell drops to 5ft and the period stretches out to 17 seconds. That’s a long-period groundswell, which means better shaped waves but longer lulls. The energy is moderate (1156). It’s a bit weaker in the afternoon.
Saturday and Sunday are small and not worth paddling out for. Monday the 21st sees a jump back up to 8ft to 10ft, but the wind is cross-onshore and choppy – that’s more of a kite day than a surf day.
Tuesday the 22nd is the real standout. Morning has 8ft of south swell with a 16-second period (strong energy at 3453), and clean cross-offshore winds. That’s big and powerful – experts only. The afternoon gets even better: 10ft south swell, 17-second period, and clean again (4258 combined energy). That is serious groundswell, best handled at a point or reef, but Pennington Bay is a sandbar so it might close out a bit. Still, for a strong surfer, that’s the session of the forecast.
Wednesday the 23rd morning keeps the quality up with offshore winds and 6ft south swell at 15 seconds, excellent conditions for experienced surfers. The afternoon is a bit smaller but still clean.
After a quiet spell mid-week, Saturday the 26th delivers another pair of excellent windows. Both morning and afternoon have 6ft south swell with 18-19 second periods and clean offshore winds. Combined energy is very strong (2622 and 2325). Again, this is for experienced surfers only – the power is real.
After that, winds get messy and the surf fades. There’s a big swell on the 1st of October but it’s blown out with onshore winds.
Best on offer: Thursday afternoon the 17th for a manageable, clean session, and Tuesday the 22nd for the heavy stuff.
- Rusty
Short Range ForecastMostly dry. Very mild (max 18°C on Fri afternoon, min 9°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Sat afternoon, min 10°C on Mon night). Mainly fresh winds. | ||||||||||||||||||||
Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | |||||||||||||||
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 15 | S 15 | S 15 | S 14 | S 14 | S 15 | S 17 | S 16 | S 14 | S 13 | S 13 | S 15 | S 16 | S 15 | SSW 14 | S 15 | S 15 | S 15 | S 16 | S 17 | S 15 |
Wave Graph | |||||||||||||||||||||
3178 | 3027 | 2507 | 1427 | 1079 | 1104 | 1156 | 710 | 423 | 225 | 168 | 422 | 596 | 522 | 1091 | 2942 | 4204 | 3463 | 3453 | 4258 | 2465 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross | cross-on | on | cross-on | cross-on | cross | cross-off | cross-off | cross-off |
High Tide | 6:02PM0.93m | 6:42AM1.51m | 6:17PM0.83m | 7:10AM1.45m | 6:24PM0.73m | 7:40AM1.35m | 5:48PM0.64m | 8:13AM1.24m | 9:02AM1.12m | 11:14AM1.03m | |||||||||||
Low Tide | 12:43PM0.39m | 11:44PM0.21m | 1:17PM0.44m | 11:58PM0.23m | 1:55PM0.51m | 00:07AM0.27m | 2:47PM0.58m | 00:03AM0.32m | 11:32PM0.37m | 10:06PM0.37m | 9:26PM0.32m | ||||||||||
6:18 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — | 6:09 | — | — | |
— | 6:09 | — | — | 6:09 | — | — | 6:10 | — | — | 6:12 | — | — | 6:13 | — | — | 6:13 | — | — | 6:14 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 11 | 10 | 10 | 10 | 12 | 12 | 17 | 18 | 18 | 19 | 21 | 21 | 19 | 17 | 13 | 12 | 12 | 12 | 11 | 13 | 15 |
Feels °C | 7 | 5 | 5 | 8 | 9 | 10 | 11 | 13 | 13 | 14 | 17 | 16 | 16 | 12 | 9 | 6 | 6 | 6 | 5 | 8 | 9 |
Swell 1 Height (m) Direction Period (s) | S 15 | S 15 | S 15 | S 14 | S 14 | S 15 | S 17 | S 16 | S 14 | S 13 | S 13 | S 15 | S 16 | S 15 | SSW 14 | S 15 | S 15 | S 15 | S 16 | S 17 | S 15 |
3178 | 3027 | 2507 | 1427 | 1079 | 1104 | 1156 | 710 | 423 | 225 | 168 | 422 | 596 | 522 | 969 | 2942 | 4204 | 3463 | 3453 | 4258 | 2465 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | WSW 6 | WSW 7 | WSW 7 | WSW 7 | N 4 | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | 8 | 5 | 5 | 5 | 6 | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | S 20 | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | 30 | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | N 3 | NNW 4 | NW 3 | N 3 | N 4 | N 3 | W 3 | WSW 4 | SSW 14 | — | — | — | E 5 | E 5 | E 4 |
— | — | — | — | — | — | 5 | 8 | 2 | 5 | 9 | 5 | 1 | 31 | 1091 | — | — | — | 53 | 23 | 11 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 92 | 104 | 57 | 54 | 59 | 54 | 59 | 59 | 59 | 59 | 59 | 54 | 96 | 629 | 57 | 57 | 844 | 57 | 231 | 107 | 89 |
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










