Surf Forecasts:
Cobblestones surf forecast from 30 Aug 2026:
- Best quality surf: Sunday 6 Sep, 5PM (local time) - 16ft (5.0m), 19s period, WSW swell with cross-onshore winds.
- Most powerful swell: Sunday 6 Sep, 5PM (local time) - 16ft (5.0m), 19s period, WSW swell with 18,650 kJ wave energy.
- Next surfable swell (1★+): Sunday 6 Sep, 5PM (local time) - 16ft (5.0m), 19s period with WSW 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 Sunday (Sep 06) at 5PM. The primary swell is predicted to be 5.0m and 19s period with a secondary swell of 0.5m and 12s. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Cobblestones in the next 16 days are 5.0m 19s and forecast to arrive on Sunday (Sep 06) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 8s period and expected on Saturday (Sep 05) at 5PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Sun 6th Sep) | 16ft (5.0m) 19s |
| Best Surf | 5PM (Sun 6th Sep) | 16ft (5.0m) 19s |
| Most Powerful | 5PM (Sun 6th Sep) | 16ft (5.0m) 19s |
Table - best surf conditions forecast for Cobblestones over the next 16 days.
The Lowdown
Right, let’s have a look at what’s on the cards for Cobblestones. This is a serious reef set-up, so it’s one for the experienced crew only – no messing about on a slab like this when it’s pumping. The water is a touch warmer than normal for the time of year at 65°.
Alright, the best window we’ve got is this Sunday the 30th of August. Grab it early. Sunday morning is looking mint: clean conditions with a gentle 9 mph cross-offshore breeze, a solid 12 ft SW groundswell with a very long 17-second period. That’s a lot of energy (6471) rolling in. This is the standout of the whole run – proper, powerful reef waves for the experts. The afternoon settles a bit to 10 ft from the WSW, but it goes cross-shore and gets a little rippled.
Monday the 31st is a write-off – strong winds and rain ruin it. Tuesday the 1st of September has onshore wind and swell, it’s messy and not worth paddling out. Wednesday and Thursday are rough too, with strong winds and rain. Friday the 4th of September is a weird one – the swell jumps to 20 ft on Friday morning, but the feedback says it’s too big for this break. Even the afternoon at 18 ft is marginal. If you’re a madman on a big-wave gun, maybe, but it’s not clean.
The next real surf comes on Tuesday the 8th of September. An 12 ft SW swell with a 15-second period and a 12 mph cross-offshore breeze from the north. The conditions are clean again, and the energy is solid (6618). This is easily the second-best call in the run.
Wednesday the 9th of September morning is a total glass-off. Zero wind, 8 ft of SW swell. It says excellent for experienced surfers, but the wave energy is lower (2891), so it’s smaller and more refined. A good session for a smooth board, but not the biggest day.
Thursday the 10th of September morning is another cracker: 10 ft from the WSW, 14-second period, and a clean cross-offshore breeze from the north. Nice.
After that, Friday the 11th of September sees a fun 12 ft to 13 ft SW swell with a long 17-second period, but the cross-shore wind makes it a bit lumpy. Still, there’s heaps of energy (7689). It’s worth a look for the experienced.
The weekend after that (12th and 13th) is blown out again with strong winds. Then Monday the 14th of September has a workable 12 ft WSW swell with a light breeze, but it’s on the cross-onshore side. Not the cleanest, but rideable.
So to sum it up: Sunday the 30th of August morning is the absolute standout – don’t sleep on it. Tuesday the 8th of September morning is your second-best bet for clean, powerful waves. The long period swell here is best on a reef like this, so those sets will unload. Crowds are sometimes an issue here, so early is always better.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Mon afternoon. Very mild (max 19°C on Sun afternoon, min 13°C on Mon afternoon). Winds increasing (light winds from the WNW on Sun night, fresh winds from the WNW by Mon afternoon). | Days 5-7 Weather SummaryLight rain (total 6mm), mostly falling on Wed afternoon. Very mild (max 16°C on Thu afternoon, min 12°C on Fri morning). Winds decreasing (near gales from the W on Thu night, light winds from the SW by Fri night). | |||||||||||||||||||
Sun 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | ||||||||||||||
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) | WSW 16 | WSW 16 | WSW 17 | WSW 16 | WSW 16 | WSW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 14 | SW 14 | SW 14 | WSW 11 | SW 14 | WSW 16 | SW 14 | SW 14 | SW 13 | SW 12 |
Wave Graph  | ||||||||||||||||||||
 kJ | 4844 | 3918 | 3700 | 3278 | 4700 | 3440 | 3148 | 3996 | 3489 | 3384 | 4269 | 5493 | 4078 | 6085 | 10265 | 12403 | 7425 | 4011 | 2176 | 6537 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross | cross-on | on | on | on | on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | cross | cross | cross | cross-on |
High Tide | 11:15PM0.67m | 11:39AM0.61m | 11:33PM0.73m | 12:35PM0.51m | 11:57PM0.78m | 00:29AM0.82m | 1:15AM0.84m | 2:47AM0.85m | ||||||||||||
Low Tide | 5:13PM0.46m | 5:41AM0.44m | 4:55PM0.49m | 7:07AM0.42m | 3:46PM0.49m | 10:34AM0.40m | 1:11PM0.31m | 1:59PM0.24m | 2:41PM0.19m | |||||||||||
 |  |  |  |  | |  | | | | | | |  | | | | |  |  | |
 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — |
 | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:02 | — | — | 6:04 | — |
mm | — | — | — | 2 | — | — | — | — | — | 2 | — | — | — | 3 | — | — | — | 1 | 2 | 10 |
Temp °C | 19 | 17 | 17 | 17 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 16 | 16 | 12 | 12 | 13 | 14 | 16 | 14 |
Feels °C | 17 | 17 | 13 | 11 | 9 | 10 | 9 | 10 | 11 | 12 | 13 | 10 | 8 | 7 | 4 | 7 | 8 | 7 | 8 | 2 |
Swell 1 Height (m) Direction Period (s) | WSW 16 | WSW 16 | WSW 17 | WSW 16 | WSW 16 | WSW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 14 | SW 14 | SW 14 | SW 18 | SW 14 | WSW 16 | SW 14 | SW 14 | SW 13 | WSW 24 |
| kJ | 4844 | 3918 | 3700 | 3278 | 4700 | 3440 | 3148 | 3996 | 3489 | 3384 | 4269 | 5493 | 4078 | 197 | 10265 | 12403 | 7425 | 4011 | 2176 | 57 |
Swell 2 Height (m) Direction Period (s) | — | WSW 20 | — | — | — | — | — | — | — | — | — | — | — | — | WSW 20 | S 13 | S 12 | S 16 | S 11 | — |
| kJ | — | 441 | — | — | — | — | — | — | — | — | — | — | — | — | 446 | 166 | 139 | 21 | 199 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SSE 12 | — | — | — | S 16 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 31 | — | — | — | 43 | — |
Wind waves Height (m) Direction Period (s) | — | — | W 5 | WSW 6 | — | — | — | — | — | — | — | — | W 6 | WSW 11 | — | — | — | NW 6 | NW 8 | SW 12 |
| kJ | — | — | 73 | 271 | — | — | — | — | — | — | — | — | 243 | 6085 | — | — | — | 210 | 743 | 6537 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 35 | 53 | 359 | 359 | 2 | 2 | 2 | 64 | 359 | 2 | 35 | 251 | 753 | 1689 | 2004 | 2 | 201 | 251 | 630 |
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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