Surf Forecasts:
Cobblestones surf forecast from 1 Sep 2026:
- Best quality surf: Sunday 6 Sep, 5PM (local time) - 16ft (5.0m), 17s period, SW swell with cross-onshore winds.
- Most powerful swell: Tuesday 8 Sep, 11AM (local time) - 16ft (5.0m), 19s period, SW swell with 16,423 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 11PM (local time) - 11ft (3.5m), 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 Wednesday (Sep 02) at 11PM. The primary swell is predicted to be 3.5m and 14s 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 5.0m 19s and forecast to arrive on Tuesday (Sep 08) at 11AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 7s period and expected on Saturday (Sep 05) at 11AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Wed 2nd Sep) | 11ft (3.5m) 14s |
| Best Surf | 5PM (Sun 6th Sep) | 16ft (5.0m) 17s |
| Most Powerful | 11AM (Tue 8th Sep) | 16ft (5.0m) 19s |
Table - best surf conditions forecast for Cobblestones over the next 16 days.
The Lowdown
G’day, Rusty here. Cobblestones is the only spot in the mix for the next 16 days, and it’s a reef break that’s no place for the faint-hearted. The swell is gonna be pumping, but the wind is going to be a real bastard for the first week, so we’ve gotta be patient. The water temp is about average for this time of year, so no worries there.
Right now, we’re looking at a big, ugly start. From Wednesday the 2nd into the weekend, we’ve got a solid 12ft to 16ft SW swell hammering in, but the wind is onshore or cross-onshore, and strong. Wednesday morning is a total write-off with 16 mph SW winds and poor conditions. The combined swell energy is huge, hitting 4447 (moderate-to-strong), but it’s just messy. That pattern sticks through Saturday the 5th, with Friday afternoon’s 16ft WSW swell (energy of 11262 – very strong) being the only glimmer, but it’s still cross-onshore and choppy. Not worth paddling out for.
Sunday the 6th afternoon is a tease. We’ve got a 16ft SW swell, a 17-second period, and clear skies, but the wind is cross-onshore from the S at 12 mph. The wave comment says it’s too big for this break, and with an energy reading of 15047 (very strong), it’s a beast. This is for experts only, and even then, it’s pushing it.
Monday the 7th is a bit better. The morning has a 13ft SW swell with a 16-second period and light WSW winds, but it’s onshore. The energy is still strong at 8031. It’s marginal, but a 7/10 score internally suggests it’s the best of a dodgy bunch so far.
Now, here’s the standout. Tuesday the 8th morning is the one. The swell is 16ft from the SW, with a 19-second period – that’s very long-period groundswell. The wind is light from the ENE at 6 mph and offshore. The energy is off the charts at 16423 (very strong). The wave comment says it’s too big for this break, but for an expert on a reef, that’s a proper session. The conditions are clean, and the offshore wind is a major positive. This is a true standout, but only for the skilled crew. Crowds are sometimes an issue here, so expect a few locals out.
After that, we get a real dry spell. The 9th through the 11th are all marginal or poor, with strong cross-offshore winds and dropping swell. The 10th Thursday morning has a glassy 7ft WSW swell (energy 2903 – moderate), which is a great window for experienced surfers, but the swell is smaller and the period is long, so it might be a bit walled at the reef.
The 13th Sunday morning is another highlight. A 12ft SW swell with a 15-second period, light ESE cross-offshore winds, and clean conditions. The energy is 5339 (moderate-to-strong), and the wave comment says it’s exceptional for expert surfers. This is a promising one, but it’s over a week away, so keep an eye on the forecasts.
The 17th Thursday morning is the final standout. A 13ft WSW swell with a 16-second period, glassy conditions with no wind, and an energy of 8407 (strong). The wave comment says exceptional for experts. If the wind stays glassy, this could be the best of the whole run, but it’s 16 days out, so it’s a long-range hope.
Overall, Cobblestones is a spot for advanced surfers only. The first week is a write-off with windy, messy conditions. The best bets are Tuesday the 8th morning for a big, clean groundswell, and the 13th and 17th for more manageable but still expert-level swells. There’s a gap of a few days after the 8th where it’s not worth it, so pick your windows.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Wed morning. Very mild (max 16°C on Wed morning, min 14°C on Tue night). Winds increasing (calm on Wed night, strong winds from the W by Thu night). | Days 5-7 Weather SummaryModerate rain (total 17mm), heaviest on Sat afternoon. Very mild (max 16°C on Sat morning, min 11°C on Sat afternoon). Winds decreasing (near gales from the SSW on Sat night, calm by Mon morning). | ||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | ||||||||||||||
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 13 | SW 13 | SW 14 | SW 15 | SW 14 | WSW 14 | WSW 13 | WSW 15 | WSW 14 | SW 13 | SW 10 | SW 12 | SW 13 | SW 17 | SW 17 | SW 16 | SW 16 | SW 15 |
Wave Graph | |||||||||||||||||||
4194 | 4447 | 4332 | 5878 | 6587 | 6217 | 8939 | 8359 | 11109 | 7420 | 3975 | 5669 | 9546 | 7456 | 14568 | 12796 | 8031 | 6051 | 5446 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | glassy | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-off |
High Tide | 11:57PM0.78m | 00:29AM0.82m | 1:15AM0.84m | 2:47AM0.85m | 5:24AM0.86m | 6:53AM0.88m | |||||||||||||
Low Tide | 10:34AM0.40m | 1:11PM0.31m | 1:59PM0.24m | 2:41PM0.19m | 3:20PM0.18m | 3:55PM0.19m | |||||||||||||
— | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — | 6:31 | — | — | 6:31 | — | — | |
6:00 | — | 6:01 | — | — | 6:01 | — | — | 6:02 | — | — | 6:04 | — | — | 6:04 | — | — | 6:05 | — | |
mm | — | 1 | — | — | — | — | 3 | — | 1 | 1 | 2 | 12 | 2 | — | — | — | — | — | — |
Temp °C | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 16 | 12 | 14 | 14 | 15 | 14 | 13 | 14 | 15 |
Feels °C | 10 | 11 | 11 | 13 | 10 | 9 | 8 | 11 | 11 | 13 | 8 | 0 | 2 | 6 | 9 | 10 | 11 | 11 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 13 | SW 13 | SW 14 | SW 15 | SW 14 | SW 18 | WSW 13 | WSW 15 | WSW 14 | SW 13 | — | WSW 22 | SW 13 | SW 17 | SW 17 | SW 16 | SW 16 | SW 15 |
4194 | 4447 | 4332 | 5878 | 6587 | 6217 | 314 | 8359 | 11109 | 7420 | 3975 | — | 47 | 7456 | 14568 | 12796 | 8031 | 6051 | 5446 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | S 12 | S 15 | S 12 | — | — | SW 20 | S 10 | — | — | — | SSE 10 |
— | — | — | — | — | — | — | — | 72 | 71 | 477 | — | — | 899 | 479 | — | — | — | 9 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | S 16 | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | 81 | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | WNW 6 | WSW 14 | — | — | — | NW 7 | SW 10 | SW 12 | SSE 10 | — | — | — | — | — |
— | — | — | — | — | 284 | 8939 | — | — | — | 415 | 5669 | 9546 | 533 | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 201 | 512 | 2 | 0 | 201 | 359 | 688 | 1689 | 359 | 201 | 220 | 630 | 1689 | 89 | 20 | 1 | 2 | 2 | 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.











