
Surf Forecasts:
Pennington Bay surf forecast from 20 Jul 2026:
- Best quality surf: Monday 27 Jul, 9AM (local time) - 5ft (1.6m), 14s period, SSW swell with cross-offshore winds.
- Most powerful swell: Thursday 23 Jul, 12AM (local time) - 11ft (3.5m), 14s period, SSW swell with 4,460 kJ wave energy.
- Next surfable swell (1★+): Tuesday 21 Jul, 3AM (local time) - 4.5ft (1.3m), 14s period with SSW 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 Tuesday (Jul 21) at 3AM. The primary swell is predicted to be 1.3m and 14s period with a secondary swell of 0.2m and 9s. 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 3.5m 14s and forecast to arrive on Thursday (Jul 23) at 12AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Monday (Jul 27) at 6AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Tue 21st Jul) | 4.5ft (1.3m) 14s |
| Best Surf | 9AM (Mon 27th Jul) | 5ft (1.6m) 14s |
| Most Powerful | 12AM (Thu 23rd Jul) | 11ft (3.5m) 14s |
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.
First up, the water temperature is running about average for this time of year, so nothing out of the ordinary there.
The next few days are a bit of a write-off, I'm not gonna lie. We've got a bit of swell on Tuesday morning, about 4ft from the SSW with a 13-second period, but the wind is cross-off and the energy is moderate (523). It's a marginal call, and the swell is small. Tuesday afternoon is a little better with a 4ft SSW swell, but still nothing to write home about.
Wednesday through to the weekend is a no-go. The wind is onshore or cross-onshore, and the swell gets raw and bumpy. By Thursday, the swell is 8ft from the S with a 14-second period, but it's onshore and messy. That's a lot of water moving around, but it's just blown out. The energy is strong (2853), but it's for the kite surfers, not for us.
We get a bit of a reprieve on Monday the 27th. The morning is looking promising with a 5ft SSW groundswell (14-second period) and light offshore winds from the NW. The energy is strong (1060), and the report says "very good." This is the first real standout. It's a solid chest-to-head-high swell, clean, and the wind is offshore. That's a winner for a Monday morning session.
Now, the end of the month and into August is a mixed bag. Tuesday the 28th and Wednesday the 29th see a massive jump in size. We're talking 10ft to 12ft of S-SW groundswell with very long periods of 16-17 seconds. The energy is extreme (5764 on Tuesday morning). This is expert territory. The wind is offshore on the Tuesday, but it's a lot of water. An 12ft wave with a 17-second period is a beast, and for a beach break like Pennington, it might just close out and be too much to handle. It's a big, powerful swell, but it's a caveat.
The real gem, and the one I'm getting a little excited about, is Friday the 31st of July. The morning is looking *excellent* for experienced surfers. We've got a 8ft S swell on a 15-second period, which is a solid, powerful groundswell. The wind is light and offshore from the N, and the energy is very strong (3011). The conditions are clean, and the report is calling it "excellent." That's the best day on offer in the whole window. The crowds are described as "often" at Pennington, so expect a few locals out, but for waves that good and that clean, it’ll be worth it.
The first few days of August fade out again with howling winds and dropping swell, but Monday the 4th of August has a late dose of hope. Tuesday afternoon the 4th of August has a 6ft SSW groundswell with a very long 18-second period, and the wind is light cross-off from the NW. The energy is strong (2278). Another clean session for experienced surfers, but that's a long way out so keep an eye on it.
To boil it down: the surf is a no-go for the first week. Monday the 27th is a good, clean day for the average surfer. The absolute standout is Friday the 31st of July for the experienced crew. The big stuff on the 28th and 29th is for experts only and might be too heavy. Stay on it.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Wed afternoon. Very mild (max 15°C on Mon night, min 10°C on Wed night). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Fri night. Very mild (max 14°C on Sat morning, min 11°C on Thu night). Mainly fresh winds. | ||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | ||||||||||||||
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) | SSW 14 | SSW 13 | SSW 13 | SSW 12 | S 14 | SSW 12 | SSW 14 | S 14 | S 15 | S 16 | S 16 | S 15 | S 14 | S 13 | S 13 | S 12 | S 11 | SSW 11 | SSW 12 |
Wave Graph | |||||||||||||||||||
838 | 523 | 431 | 318 | 236 | 688 | 4460 | 2853 | 3243 | 3311 | 3453 | 3178 | 2097 | 1475 | 1298 | 942 | 441 | 376 | 404 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on |
High Tide | 7:52AM1.29m | 7:28PM1.02m | 8:30AM1.31m | 7:48PM0.89m | 9:14AM1.29m | 7:54PM0.76m | 10:08AM1.26m | 11:22AM1.22m | 1:02PM1.22m | ||||||||||
Low Tide | 1:10AM0.45m | 1:57PM0.63m | 1:26AM0.44m | 2:51PM0.69m | 1:44AM0.43m | 4:21PM0.73m | 1:56AM0.45m | 1:49AM0.48m | 11:50PM0.49m | 10:13PM0.39m | |||||||||
— | 7:22 | — | — | 7:22 | — | — | 7:22 | — | — | 7:22 | — | — | 7:20 | — | — | 7:20 | — | — | |
— | — | 5:27 | — | — | 5:27 | — | — | 5:28 | — | — | 5:29 | — | — | 5:29 | — | — | 5:30 | — | |
mm | — | — | — | — | — | 1 | 1 | — | — | — | — | — | 1 | — | — | — | — | 1 | — |
Temp °C | 15 | 15 | 15 | 14 | 14 | 13 | 11 | 11 | 12 | 12 | 13 | 13 | 13 | 14 | 14 | 13 | 14 | 14 | 13 |
Feels °C | 12 | 12 | 12 | 12 | 7 | 7 | 4 | 5 | 6 | 7 | 7 | 8 | 10 | 8 | 8 | 9 | 11 | 11 | 11 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 13 | SSW 13 | SSW 12 | S 14 | — | SSW 14 | — | S 15 | S 16 | S 16 | S 15 | S 14 | S 13 | S 13 | S 12 | S 11 | SSW 11 | SSW 12 |
838 | 523 | 431 | 318 | 236 | — | 4460 | — | 3243 | 3311 | 3453 | 3178 | 2097 | 1475 | 1298 | 942 | 441 | 376 | 404 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SSW 16 | — | S 15 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 26 | — | 115 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | N 3 | N 3 | NW 2 | SW 6 | SSW 12 | S 15 | S 14 | — | — | — | — | NW 3 | — | — | — | NW 3 | NW 4 | NW 4 |
— | 1 | 2 | 2 | 58 | 688 | 2278 | 2853 | — | — | — | — | 3 | — | — | — | 2 | 8 | 10 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 54 | 54 | 54 | 59 | 626 | 639 | 616 | 57 | 1115 | 57 | 57 | 607 | 607 | 616 | 616 | 57 | 57 | 59 | 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










