
Surf Forecasts:
Cobblestones surf forecast from 14 Sep 2026:
- Best quality surf: Tuesday 15 Sep, 11AM (local time) - 10ft (3.0m), 14s period, SW swell with offshore winds.
- Most powerful swell: Saturday 19 Sep, 5AM (local time) - 13ft (4.0m), 14s period, WSW swell with 6,981 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 11AM (local time) - 10ft (3.0m), 14s 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 15) at 11AM. The primary swell is predicted to be 3.0m and 14s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Cobblestones in the next 16 days are 4.0m 14s and forecast to arrive on Saturday (Sep 19) at 5AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 7s period and expected on Friday (Sep 18) at 2AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Tue 15th Sep) | 10ft (3.0m) 14s |
| Best Surf | 11AM (Tue 15th Sep) | 10ft (3.0m) 14s |
| Most Powerful | 5AM (Sat 19th Sep) | 13ft (4.0m) 14s |
Table - best surf conditions forecast for Cobblestones over the next 16 days.
The Lowdown
Alright, Rusty here, looking at the next couple of weeks. We’ve got one spot on the radar, and it’s a proper reef setup that doesn’t mess around. The first surf worth paddling out for kicks off Tuesday morning, September 15th.
Tuesday morning, September 15th, is the real deal. Cobblestones is cleaning up with a light offshore breeze from the ENE and a solid 10ft SW groundswell. The period is a nice 14 seconds, so there’s plenty of grunt in the water. The combined energy is massive at (4009), meaning there’s a ton of power pushing in. This is an advanced spot, and with that size and energy, it’s strictly for experienced surfers only. Conditions are looking excellent for those who can handle it.
The wind swings around Tuesday afternoon to a cross-shore from the SSE, still light, but the quality drops off a bit. The swell holds at 10ft SW, but the forecast flags some tide issues.
Wednesday the 16th sees the swell drop to 7ft SW in the morning with a moderate NNE breeze that’s slightly offshore, keeping things clean. By the afternoon, it’s even cleaner with a light N wind and the swell down to 5ft. A better option for the slightly less experienced, but still solid for this break.
Thursday the 17th gets a bit messy. Strong NNW winds and a dropping swell make it a scratchy session. The morning is cross-shore and the afternoon gets lumpy.
Friday the 18th has a strong NNE breeze in the morning, which is cross-offshore, but the winds are howling at 28 mph, making it a tough paddle. The swell is 6ft but the period jumps to a very long 17 seconds. That long period will have the reef lines running straight and true, but the wind is the issue. Afternoon gets a bit of rain and the wind swings, making it worse.
Saturday the 19th is a write-off. Onshore winds and a building 12ft+ swell with poor conditions. Don’t bother.
Sunday the 20th has some hope in the afternoon. A 10ft SW swell with a light NW cross-shore. The energy is still high (3372), but the conditions are only marginal.
Monday the 21st is another day of strong NW winds and big 10ft SW swell. The morning is lumpy and the afternoon brings rain and a full onshore flow. Not good.
Tuesday the 22nd has onshore winds again and a building swell up to 12ft by the afternoon. Still poor.
Wednesday the 23rd gets ugly. A massive 15ft SW swell hits, but the wind is onshore and strong. This is too big for anyone but the most elite, and the wind ruins it.
Thursday the 24th sees another huge 15ft SW swell, this time with a 15-second period. The morning has a cross-shore S wind, making it a marginal, dangerous beast. The afternoon is onshore and lumpy.
Friday the 25th is where it gets completely nuts. A 20ft SW swell with an 18-second period. The combined energy is astronomical at (23219). The wind and tide are favorable in theory, but the swell is simply too big for this break. It’s a warning, not a recommendation, unless you’re a pro charging XXL waves. The same goes for the afternoon.
The following week settles down a bit. Saturday the 26th has a 12ft SW swell in the morning, but the wind is cross-onshore. Sunday the 27th drops to a more manageable 7ft SW, but the wind remains cross-onshore.
Monday the 28th looks interesting. A clean 10ft SW swell with a 16-second period and a light offshore N wind. This is the best option after the first few days, and it’s a full week away, so keep an eye on it.
Tuesday the 29th and Wednesday the 30th are back to cross-onshore winds and onshore flow, with the swell holding at 10ft. Not great.
So, the standout is Tuesday morning, September 15th. That’s the pick of the bunch. After that, there’s a long stretch of blown-out or dangerous conditions until Monday the 28th, which shows promise, but it’s a long way off.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Wed afternoon, min 10°C on Mon night). Winds increasing (light winds from the N on Wed afternoon, fresh winds from the NNW by Thu afternoon). | Days 5-7 Weather SummaryHeavy rain (total 26mm), heaviest during Fri night. Warm (max 20°C on Fri morning, min 13°C on Fri night). Winds decreasing (strong winds from the NNE on Fri morning, light winds from the WNW by Sun morning). | ||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||
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 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | WSW 14 | WSW 14 | WSW 13 | WSW 12 | WSW 17 | WSW 16 | WSW 15 | WSW 14 | WSW 14 | WSW 13 | WSW 12 | SW 14 | SW 15 |
Wave Graph | |||||||||||||||||||
4691 | 4009 | 3619 | 2534 | 1380 | 865 | 961 | 971 | 808 | 800 | 1607 | 2128 | 6586 | 5387 | 3644 | 2021 | 1435 | 3372 | 4848 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross | off | cross-off | cross-off | cross-off | cross | cross | cross-off | cross-off | cross | on | on | cross-on | cross-on | cross-on | cross | cross-off |
High Tide | 10:43PM0.72m | 9:41AM0.38m | 11:04PM0.76m | 11:28PM0.79m | 11:55PM0.81m | 00:25AM0.81m | 1:03AM0.80m | 2:38AM0.77m | |||||||||||
Low Tide | 7:39AM0.38m | 2:06PM0.35m | 2:02PM0.31m | 2:13PM0.28m | 2:26PM0.27m | 2:39PM0.27m | 2:51PM0.28m | ||||||||||||
— | 6:20 | — | — | 6:18 | — | — | 6:16 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | |
6:09 | — | 6:10 | — | — | 6:10 | — | — | 6:12 | — | — | 6:13 | — | — | 6:13 | — | — | 6:14 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | 4 | 19 | — | — | 1 | 2 | — | — |
Temp °C | 15 | 17 | 19 | 21 | 21 | 24 | 22 | 19 | 19 | 18 | 20 | 15 | 14 | 15 | 16 | 16 | 16 | 17 | 17 |
Feels °C | 11 | 15 | 17 | 19 | 18 | 24 | 20 | 18 | 16 | 13 | 13 | 7 | 7 | 7 | 11 | 11 | 14 | 15 | 16 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | WSW 14 | WSW 14 | WSW 13 | NW 7 | W 9 | WSW 16 | — | WSW 14 | WSW 14 | WSW 13 | WSW 12 | SW 14 | SW 15 |
4691 | 4009 | 3619 | 2534 | 1380 | 865 | 961 | 971 | 808 | 508 | 1029 | 2128 | — | 5387 | 3644 | 2021 | 1435 | 3372 | 4848 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | SE 7 | S 13 | SW 16 | S 11 | S 11 | SW 18 | WSW 12 | WSW 17 | NW 8 | — | — | — | SSW 9 | SW 16 | — | — |
— | — | — | 8 | 485 | 367 | 123 | 58 | 162 | 800 | 1607 | 256 | — | — | — | 29 | 96 | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | SW 22 | WSW 21 | ESE 8 | S 11 | SW 16 | — | W 14 | — | — | — | — | — | — | — |
— | — | — | — | — | 18 | 42 | 6 | 20 | 483 | — | 65 | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | ESE 6 | SE 4 | SE 7 | NE 4 | — | NNE 3 | NNW 4 | NW 5 | S 10 | S 6 | WSW 11 | WSW 15 | — | — | — | — | — | — |
— | 20 | 17 | 79 | 8 | — | 9 | 11 | 102 | 8 | 91 | 814 | 6586 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 28 | 0 | 44 | 201 | 201 | 53 | 159 | 359 | 658 | 1340 | 1797 | 220 | 2 | 44 | 86 |
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.










