Surf Forecasts:
Cobblestones surf forecast from 22 Aug 2026:
- Best quality surf: Wednesday 26 Aug, 8AM (local time) - 18ft (5.5m), 19s period, WSW swell with onshore winds.
- Most powerful swell: Wednesday 26 Aug, 8AM (local time) - 18ft (5.5m), 19s period, WSW swell with 19,994 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 2AM (local time) - 11ft (3.5m), 15s period with SW swell.
Best Forecast Surf Conditions for Cobblestones this week:
The surf forecast for Cobblestones over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 24) at 2AM. The primary swell is predicted to be 3.5m and 15s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Cobblestones in the next 16 days are 5.5m 19s and forecast to arrive on Wednesday (Aug 26) at 8AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.0m 7s period and expected on Tuesday (Aug 25) at 8PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Mon 24th Aug) | 11ft (3.5m) 15s |
| Best Surf | 8AM (Wed 26th Aug) | 18ft (5.5m) 19s |
| Most Powerful | 8AM (Wed 26th Aug) | 18ft (5.5m) 19s |
Table - best surf conditions forecast for Cobblestones over the next 16 days.
The Lowdown
Alright, let’s get into it. The only game in town for the next 16 days is Cobblestones, a heavy reef break that’s strictly for advanced crew. Don’t even think about paddling out here if you’re not on your game.
Water temp is sitting at a touch warmer than normal for this time of year, about 66°, so a welcome bit of warmth.
We’re looking at a bit of a slow start. Saturday the 22nd through Tuesday the 27th is mostly a write-off. Swell is pumping, with wave energy readings in the thousands and right up over 18,000 (strong to very strong), but it’s all getting trashed by cross-onshore winds and chop. Wednesday the 26th actually has a monster 18ft+ WSW swell with an 18-second period – that’s some deep-ground energy – but it’s simply too big for this break. That’s expert-only territory and still messy.
Thursday the 27th and Friday the 28th stay marginal with cross-shore winds and lumpy conditions. The energy drops back, but the quality isn’t there yet.
Now, the standout window arrives on Saturday the 29th and Sunday the 30th. We get a clean, cross-offshore breeze from the NE then N, with a 7ft to 12ft SW swell. The period stretches into the 14 to 18-second range, so it’s proper groundswell that will wrap in nicely. Wave energy is sitting in the 2,000 to 7,200 range – moderate to strong – and the conditions will be clean. This is your best bet of the whole outlook.
Monday the 31st morning is a real gem for the experienced surfer: glassy conditions, 10ft WSW groundswell at 15 seconds, and light winds. The energy is solid (4982), and it will be just about perfect out there. It’ll be crowded, though – this spot gets packed, and for good reason.
After that, the first week of September keeps some swell coming, with a 10ft to 15ft pulse through the 3rd and 4th, but wind quality gets patchy. The morning of the 3rd has light offshore wind and clean 10ft waves, and the morning of the 4th has a powerful 15ft SW swell with a clean cross-offshore breeze. Those are solid options, but the 5th and 6th fall apart again with onshore winds and rain.
So, to sum it up: the real highlights are Saturday the 29th and Sunday the 30th for clean, solid swell, and Monday the 31st for glassy perfection. If you can only go once, make it that Monday morning.
Rusty
Short Range ForecastSome drizzle, heaviest during Sun morning. Very mild (max 16°C on Sat morning, min 11°C on Mon morning). Winds increasing (calm on Sun night, fresh winds from the NW by Mon night). | Days 4-6 Weather SummaryHeavy rain (total 23mm), heaviest during Tue night. Very mild (max 17°C on Tue morning, min 13°C on Tue night). Winds decreasing (strong winds from the NNW on Tue afternoon, light winds from the ESE by Thu night). | ||||||||||||||||||||
Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | |||||||||||||||
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) | SW 16 | SW 16 | SW 14 | SW 13 | SW 13 | SW 15 | SW 13 | SW 13 | SW 12 | SW 14 | WSW 13 | WSW 16 | WSW 18 | WSW 17 | SW 16 | SW 15 | SW 14 | SW 13 | SW 12 | SW 12 | SW 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 4301 | 3439 | 1891 | 2436 | 2381 | 5358 | 3045 | 2207 | 1890 | 3060 | 3314 | 8111 | 18843 | 16162 | 10010 | 6228 | 4626 | 2574 | 1500 | 1094 | 770 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | cross | cross-on | cross-on | cross | cross | on | on | cross-on | cross-on | cross-on | cross | cross-off | cross | cross | off |
High Tide | 5:28AM0.87m | 6:35AM0.90m | 7:24AM0.91m | 8:07AM0.91m | 8:49AM0.90m | 11:28PM0.59m | 9:30AM0.85m | 11:07PM0.60m | |||||||||||||
Low Tide | 3:54PM0.28m | 4:05PM0.29m | 4:17PM0.29m | 4:29PM0.31m | 4:41PM0.32m | 4:53PM0.34m | 2:29AM0.56m | 5:05PM0.37m | 3:35AM0.51m | ||||||||||||
 | |  |  |  |  | | | |  | |  |  | |  | | | | | | | |
 | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | 6:45 | — | — | 6:43 | — | — |
 | — | 5:53 | — | — | 5:54 | — | — | 5:55 | — | — | 5:55 | — | — | 5:57 | — | — | 5:58 | — | — | 5:58 | — |
mm | — | — | — | 1 | — | — | — | — | — | — | 1 | 13 | 2 | 5 | 2 | — | — | — | — | — | — |
Temp °C | 16 | 15 | 15 | 15 | 14 | 13 | 15 | 15 | 16 | 17 | 17 | 17 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 17 | 15 |
Feels °C | 12 | 10 | 11 | 11 | 9 | 10 | 12 | 10 | 11 | 11 | 10 | 10 | 12 | 8 | 8 | 9 | 10 | 12 | 14 | 13 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 14 | SW 13 | SW 13 | SW 15 | SW 13 | SW 13 | SW 12 | SW 14 | WSW 13 | WSW 16 | WSW 18 | WSW 17 | SW 16 | SW 15 | SW 14 | SW 13 | SW 12 | SW 12 | SW 11 |
| kJ | 4301 | 3439 | 1891 | 2436 | 2381 | 5358 | 3045 | 2207 | 1890 | 3060 | 3314 | 8111 | 18843 | 16162 | 10010 | 6228 | 4626 | 2574 | 1500 | 1094 | 770 |
Swell 2 Height (m) Direction Period (s) | — | — | WSW 20 | WSW 18 | WSW 16 | — | — | — | SW 15 | — | S 12 | S 12 | — | — | — | — | — | W 21 | SW 21 | SW 20 | SW 18 |
| kJ | — | — | 75 | 448 | 1209 | — | — | — | 427 | — | 3 | 3 | — | — | — | — | — | 9 | 17 | 60 | 192 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | WSW 22 | — | — | — | — | — | — | — | SW 24 | SW 21 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 408 | — | — | — | — | — | — | — | 22 | 117 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | NW 4 | NW 5 | NW 6 | — | — | — | — | — | — | — | — | — | NE 3 |
| kJ | — | — | — | — | — | — | — | — | 19 | 122 | 263 | — | — | — | — | — | — | — | — | — | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 20 | 359 | 2 | 20 | 20 | 0 | 28 | 172 | 53 | 251 | 201 | 630 | 35 | 359 | 35 | 20 | 20 | 0 | 0 | 31 | 0 |
Best forecast wave conditions in Margaret River | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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Information about the Cobblestones Surf forecast
The above surf forecast table for Cobblestones provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cobblestones can be found by selecting the local surf guide option on the grey menu. Our Cobblestones 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 (Cobblestones) 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 Cobblestones 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.
Cobblestones is 85 km (53 miles) from the city of Bunbury. If you plan a holiday in Margaret River, look for hotels and other accommodation in Bunbury. Bunbury has rooms for a wide range of budgets as well as car hire and transport links.
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