
Surf Forecasts:
Cobblestones surf forecast from 7 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 5PM (local time) - 13ft (4.0m), 16s period, WSW swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 11AM (local time) - 13ft (4.0m), 16s period, SW swell with 8,888 kJ wave energy.
- Next surfable swell (1★+): Tuesday 8 Sep, 5PM (local time) - 13ft (4.0m), 16s 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 Tuesday (Sep 08) at 5PM. 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 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Tuesday (Sep 08) at 2PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Tue 8th Sep) | 13ft (4.0m) 16s |
| Best Surf | 5PM (Tue 8th Sep) | 13ft (4.0m) 16s |
| Most Powerful | 11AM (Tue 8th Sep) | 13ft (4.0m) 16s |
Table - best surf conditions forecast for Cobblestones over the next 16 days.
The Lowdown
Alright, Rusty here, let's take a look at what's brewing.
We got a solid run of swell coming in, but it ain't all perfect. The first few days are the real standouts, with some serious groundswell and clean conditions, but it's for the experienced crew only, especially at Cobblestones. This is a reef break, for advanced surfers, so keep that in mind. The water's sitting at about 65°, which is a touch warmer than usual for this time of year.
We start off on Tuesday the 8th of September with a meaty 13ft SW groundswell, with a period of 16 seconds. That's a long-period groundswell, and with a combined energy of 8888, there's a ton of power in the water. The wind's cross-off from the ESE at 12 mph, keeping it clean. It's a bit of a beast, and the forecast mentions questionable tides, but for an expert, this is the pick of the whole run. The afternoon cleans up even more with a lighter sea breeze.
Wednesday the 9th holds onto that 10ft SW swll with a 15-second period. The morning has a solid offshore breeze from the ENE at 16 mph, which is going to groom it nicely. The combined energy is still massive at 4187. It's still excellent for experienced surfers.
Thursday the 10th sees the swll drop to 7ft, but it's still a clean SW groundswell with a 14-second period. The wind goes offshore from the NE at 12 mph in the morning. Then, Thursday afternoon is a real beauty: the wind goes glassy from the NNW at 3 mph. That's a major positive for clean conditions.
Friday the 11th has a 7ft WSW groundswell in the morning with a 16-second period and a cross-off wind from the N. The afternoon, though, is a bit of a trap. The swll kicks back up to 10ft with a very long 18-second period, but the wind goes cross-shore, and the forecast flags some questionable tide conditions. That long period at a beach/reef setup can make it break a bit straight.
From Saturday the 12th through to the end of the week, things go pretty average. The wind turns onshore and lumpy, so it's not a great time to be out. Sunday the 13th afternoon gets messy with rain showers and onshore wind, though there's still a lot of swll.
There's a bit of a window on Monday the 14th of September. The morning has an 12ft WSW swll with a 14-second period and a light cross-off breeze from the NNE. The combined energy is 4510, but it's another one for the experienced crew.
The rest of the run from Tuesday the 15th right through to the 23rd is mostly blown out or has messy conditions. The winds are often cross-on or onshore, and the swll is consistently over 8ft, which is expert territory anyway. The last few days, especially around the 20th and 21st, there's a huge amount of energy (9851 on the 20th), but with strong onshore winds, that's more of a kite-surfing scenario than a paddle one. There are a few mornings with lighter wind, like the 16th and 22nd, but the conditions are still described as marginal with a cross-on chop.
So, if you're an advanced surfer, the first few days are the ones to aim for. Tuesday the 8th and Wednesday the 9th are your best bets. After that, keep an eye on the glassy Thursday afternoon and the clean Monday morning, but don't expect perfection. It's a classic case of a big swll hanging around but the wind not playing ball for most of the second week.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Wed afternoon, min 11°C on Tue morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Sat morning. Very mild (max 18°C on Fri morning, min 13°C on Sun night). Winds decreasing (strong winds from the W on Sat morning, light winds from the SE by Sun night). | ||||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | |||||||||||||||
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 | WSW 16 | WSW 16 | SW 15 | SW 15 | SW 15 | SW 14 | WSW 15 | WSW 15 | WSW 16 | WSW 18 | WSW 16 | WSW 16 | WSW 10 | W 10 | WSW 14 | WSW 13 | WSW 13 | WSW 14 | WSW 14 | SW 15 |
Wave Graph | |||||||||||||||||||||
8888 | 7354 | 5703 | 4187 | 3622 | 2525 | 1785 | 1737 | 2207 | 2355 | 5454 | 4055 | 2386 | 1654 | 1432 | 1362 | 4277 | 4158 | 4488 | 5381 | 5583 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | off | off | off | off | glassy | off | cross-off | cross | cross | cross-on | cross-on | cross-on | cross-on | on | cross-off | cross-off | cross-on | cross-off |
High Tide | 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 | 10:57AM0.43m | 10:43PM0.72m | ||||||||
Low Tide | 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 | 6:09AM0.37m | 2:41PM0.40m | ||||||||
6:30 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | 6:22 | — | — | 6:22 | — | — | |
— | 6:06 | — | — | 6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — | — | 6:09 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | 2 | 4 | — | — | — | 1 | 1 | — | — | — |
Temp °C | 16 | 19 | 15 | 15 | 20 | 19 | 16 | 19 | 17 | 18 | 18 | 17 | 17 | 17 | 16 | 17 | 17 | 16 | 16 | 17 | 15 |
Feels °C | 11 | 14 | 10 | 10 | 18 | 16 | 11 | 17 | 16 | 16 | 16 | 16 | 10 | 10 | 10 | 12 | 12 | 14 | 15 | 15 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 16 | WSW 16 | WSW 16 | SW 15 | SW 15 | SW 15 | SW 14 | WSW 15 | WSW 15 | WSW 16 | WSW 18 | WSW 16 | WSW 16 | WSW 10 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 14 | WSW 14 | SW 15 |
8888 | 7354 | 5703 | 4187 | 3622 | 2525 | 1785 | 1737 | 2207 | 2355 | 5454 | 4055 | 2386 | 1433 | 1028 | 1362 | 4277 | 4158 | 4488 | 5381 | 5583 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | SSE 7 | SE 7 | SW 24 | SW 22 | S 11 | WSW 19 | S 13 | S 12 | SSE 12 | WSW 15 | WSW 18 | WSW 16 | WSW 16 | — | SW 24 | SW 21 | — |
— | — | — | — | 19 | 13 | 271 | 372 | 37 | 1410 | 14 | 12 | 13 | 1654 | 268 | 722 | 1154 | — | 22 | 72 | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | NNE 6 | WSW 26 | SE 8 | N 6 | SSE 11 | S 11 | — | — | — | S 11 | S 11 | — | — | — | — | — | — |
— | — | — | — | 10 | 65 | 28 | 15 | 68 | 21 | — | — | — | 2 | 2 | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SE 5 | SSE 6 | SE 7 | NE 6 | — | NE 4 | NNE 6 | — | — | N 4 | — | NW 4 | W 7 | — | W 10 | W 9 | — | — | — | — | — |
65 | 111 | 127 | 31 | — | 13 | 43 | — | — | 10 | — | 46 | 620 | — | 1432 | 1044 | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 143 | 53 | 875 | 1797 | 251 | 559 | 359 | 0 | 0 | 2 | 1 |
Best forecast wave conditions in Margaret River | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.










