Surf Forecasts:
Cobblestones surf forecast from 7 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 2PM (local time) - 13ft (4.0m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 8AM (local time) - 13ft (4.0m), 16s period, SW swell with 9,039 kJ wave energy.
- Next surfable swell (1★+): Tuesday 8 Sep, 2PM (local time) - 13ft (4.0m), 16s 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 Tuesday (Sep 08) at 2PM. The primary swell is predicted to be 4.0m and 16s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Cobblestones in the next 16 days are 4.0m 16s and forecast to arrive on Tuesday (Sep 08) at 8AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Monday (Sep 07) at 11PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Tue 8th Sep) | 13ft (4.0m) 16s |
| Best Surf | 2PM (Tue 8th Sep) | 13ft (4.0m) 16s |
| Most Powerful | 8AM (Tue 8th Sep) | 13ft (4.0m) 16s |
Table - best surf conditions forecast for Cobblestones over the next 16 days.
The Lowdown
Alright, Rusty here, giving you the lowdown on the surf. We’ve got one spot on the map for the next two weeks, and it’s a serious slab for the experienced crew.
It’s all about Cobblestones, a heavy reef break that’s going to be firing on south-west groundswell. The water’s running about 63°, which is a degree or so warmer than normal for this time of year, so that’s a nice touch. The wave energy is huge, with readings in the thousands (6877), meaning the ocean is absolutely loaded.
The prime window starts Monday, September 7th. The morning session is the standout: a clean 12ft SW swell with a 16-second period, and a light cross-offshore breeze. That’s perfect reef conditions. The energy is massive (6877), so this is for experts only – anything over 8ft is too much for most. The afternoon gets messy with a 30 km/h cross-shore wind.
Tuesday the 8th is another gem. The swell jumps to 13ft from the SW and WSW, with periods holding at 16 seconds. The morning has a moderate cross-off, but the afternoon glass-off is the real winner. The energy is insane (8888 and 7354). This is top-tier, heavy reef surfing.
Wednesday the 9th stays solid with 10ft SW swell and clean offshore winds, though a fresh 30 km/h breeze in the morning will be tricky. The afternoon is a dream with light easterly offshore winds.
The pattern holds through Thursday the 10th (7ft, glassy conditions in the afternoon!) and Friday the 11th, which sees a very long period 19-second swell at 5ft in the morning. That long period is a dream for a reef. Energy is still strong (3131).
Saturday the 12th and Sunday the 13th are a total loss. Strong cross-onshore winds and rain will turn the place into a mess. Don’t even think about it.
The surf cleans up again on Monday the 14th with an 12ft WSW swell going glassy in the afternoon – that’s a magic session. Tuesday the 15th is also a glassy morning with 10ft SW swell.
The second week gets more mixed. There’s a big pulse of energy on Monday the 21st with a 15ft SW swell and a 17-second period, but the cross-shore winds will make it lumpy. The energy is monstrous (11020 and 10055), so it’ll be a real fight. The following Tuesday the 22nd is just blown out by strong onshore winds.
For the best of the best, book it for Monday the 7th morning and Tuesday the 8th afternoon – that’s as good as it gets. This is a heavy, expert-only wave, so don’t even think about paddling out unless you’re ready. The crowd factor is "sometimes", so you might have a few others, but it’s a big lineup.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Wed afternoon, min 10°C on Tue night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Sat morning. Very mild (max 19°C on Fri afternoon, min 12°C on Thu morning). Winds increasing (calm on Thu afternoon, strong winds from the W by Sat morning). | ||||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | |||||||||||||||
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 16 | SW 16 | WSW 16 | WSW 16 | SW 15 | SW 15 | SW 15 | SW 14 | WSW 15 | WSW 15 | WSW 19 | WSW 18 | WSW 16 | W 16 | W 9 | WSW 14 | WSW 13 | WSW 13 | WSW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 6877 | 6080 | 7370 | 8888 | 7354 | 5424 | 4187 | 3622 | 2699 | 1649 | 1737 | 1873 | 1576 | 3675 | 4402 | 6575 | 1834 | 1700 | 3550 | 4699 | 4708 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | cross-off | cross-off | off | off | off | off | cross-off | glassy | off | cross-off | cross | cross | cross-on | cross-on | cross-on | cross-on | on | cross-off |
High Tide | 7:55AM0.87m | 00:50AM0.59m | 8:46AM0.83m | 11:34PM0.54m | 9:30AM0.77m | 10:58PM0.54m | 10:08AM0.69m | 10:34PM0.56m | 10:39AM0.60m | 10:24PM0.61m | 11:00AM0.51m | 10:28PM0.67m | |||||||||
Low Tide | 3:55PM0.19m | 4:26PM0.23m | 1:13AM0.59m | 4:50PM0.28m | 2:42AM0.51m | 5:02PM0.34m | 3:34AM0.45m | 4:57PM0.40m | 4:22AM0.40m | 4:28PM0.44m | 5:12AM0.37m | 3:38PM0.43m | |||||||||
 | |  | | | | | | | |  |  | |  |  |  | | | | | | |
 | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | 6:22 | — | — |
 | — | 6:05 | — | — | 6:06 | — | — | 6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 3 | — | — | — | 2 | — |
Temp °C | 15 | 16 | 13 | 15 | 19 | 15 | 16 | 20 | 19 | 16 | 18 | 18 | 18 | 19 | 18 | 17 | 16 | 16 | 17 | 16 | 15 |
Feels °C | 12 | 11 | 7 | 10 | 15 | 9 | 10 | 17 | 15 | 12 | 15 | 17 | 15 | 16 | 12 | 9 | 8 | 10 | 11 | 11 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | SW 16 | WSW 16 | WSW 16 | SW 15 | SW 15 | SW 15 | SW 14 | WSW 15 | WSW 15 | WSW 14 | WSW 18 | WSW 16 | SE 12 | WSW 15 | WSW 14 | WSW 16 | WSW 13 | WSW 13 |
| kJ | 6877 | 6080 | 7370 | 8888 | 7354 | 5424 | 4187 | 3622 | 2699 | 1649 | 1737 | 1873 | 1534 | 3675 | 4402 | 5 | 1811 | 1700 | 1109 | 4699 | 4708 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | SSE 7 | WSW 26 | SW 24 | SW 22 | SW 21 | WSW 19 | WSW 13 | — | — | S 12 | W 18 | — | — | — |
| kJ | — | — | — | — | — | — | — | 19 | 65 | 271 | 372 | 463 | 1576 | 983 | — | — | 3 | 227 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | NNE 6 | SW 26 | SE 8 | N 6 | S 11 | S 11 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 10 | 103 | 31 | 22 | 61 | 21 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SE 10 | — | SE 5 | SSE 6 | SE 7 | NE 6 | — | ESE 8 | NNE 6 | — | — | N 4 | — | NNW 5 | W 16 | W 9 | W 9 | WSW 13 | — | — |
| kJ | — | 25 | — | 74 | 119 | 130 | 30 | — | 79 | 43 | — | — | 10 | — | 56 | 6575 | 1834 | 1464 | 3550 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 38 | 1 | 0 | 0 | 0 | 13 | 0 | 0 | 16 | 0 | 0 | 53 | 53 | 201 | 630 | 1797 | 251 | 569 | 2 | 0 |
Best forecast wave conditions in Margaret River | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Cobblestones surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest