
Surf Forecasts:
Cobblestones surf forecast from 15 Jul 2026:
- Best quality surf: Thursday 16 Jul, 11PM (local time) - 10ft (3.0m), 13s period, WSW swell with cross-offshore winds.
- Most powerful swell: Saturday 18 Jul, 2PM (local time) - 16ft (5.0m), 16s period, WSW swell with 12,842 kJ wave energy.
- Next surfable swell (1★+): Thursday 16 Jul, 11PM (local time) - 10ft (3.0m), 13s 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 Thursday (Jul 16) at 11PM. The primary swell is predicted to be 3.0m and 13s period with a secondary swell of 0.2m and 12s. 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 5.0m 16s and forecast to arrive on Saturday (Jul 18) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 7s period and expected on Thursday (Jul 16) at 8AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Thu 16th Jul) | 10ft (3.0m) 13s |
| Best Surf | 11PM (Thu 16th Jul) | 10ft (3.0m) 13s |
| Most Powerful | 2PM (Sat 18th Jul) | 16ft (5.0m) 16s |
Table - best surf conditions forecast for Cobblestones over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s break down the next couple of weeks at Cobblestones. This is a solid, advanced reef break that needs the right conditions to fire, and we’ve got a real mixed bag ahead.
Right now, the water temp is sitting at 67°, which is a touch warmer than normal for this time of year – you might not need the thickest wetsuit, but that’s a nice little bonus.
The window opens up with a massive pulse of energy on Wednesday, July 15th. We’re looking at a solid 10ft SW groundswell with a very long 17-second period, pumping a huge 4536 units of energy into the water. The wind is a fresh cross-off from the NNE, keeping things clean. This is a big, powerful swell though – well over 8ft, so this is strictly for experienced crew on the reef. The combined energy is strong (4536), and that long period will make for some proper, heavy lines. It’s not a perfect 10 out there, but the size and power are undeniable.
Thursday the 16th holds similar size (10ft) but the wind shifts to a gentle cross-onshore, so the surface will get a bit of texture. The energy is still pumping, but the quality drops a notch.
The real standout, the one you’ve been waiting for, is Thursday, July 23rd. This is the pick of the month. The swell drops slightly to a more manageable 12ft, still coming from the SW with a 14-second period and strong energy (4334). The magic is the wind: a clean, moderate offshore from the ENE for the morning, and then light offshore from the NE in the afternoon. That’s glassy, groomed conditions on an already powerful reef. The surfline will be clean, lined up, and offering proper barrels for the advanced crew. The combined energy is strong (4334 in the morning), and with offshore winds, this is the best session on offer. The crowds at Cobblestones are likely to be *sometimes* present, but with conditions this good, expect a few more bodies out.
The preceding week has some solid swells, but the wind is a constant battle. Look at Saturday, July 18th – a massive 18ft SW swell with 9957 energy, but it’s accompanied by a 35 km/h onshore wind. That’s a washing machine. It’s not surfable, but if you’re into kite surfing, that kind of power with strong onshore wind is a dream setup. Similarly, the 13ft SW swell on Tuesday, July 21st is ruined by a 30 km/h onshore wind.
After the 23rd, the swell fades through the end of July and into the start of August. The energy drops significantly, with the swells getting smaller and the wind shifting back to cross-off or onshore. There’s a small window of clean, 5ft waves on Saturday, July 25th, but the energy is weak (828) and the winds are fresh. By Sunday, July 26th, it’s pretty much done, with a 3ft cross-shore mess.
Another big pulse appears on the 30th of July. A 12ft SW swell with a very long 17-second period and a huge 7592 energy. The wind is a moderate cross-shore from the SSE, so it’s going to be a bit lumpy. It’s a distant possibility, but for now, that Thursday, July 23rd is the one to circle.
In short: the first week is a story of size versus wind. The second week starts with a bang on the 23rd, then fades. The 30th offers a late possibility, but it’s a long way off.
Rusty.
Short Range ForecastHeavy rain (total 23mm), heaviest during Thu morning. Warm (max 20°C on Wed night, min 14°C on Fri night). Winds increasing (light winds from the NE on Thu night, near gales from the WNW by Fri night). | Days 4-6 Weather SummaryModerate rain (total 15mm), heaviest on Mon night. Very mild (max 17°C on Mon night, min 14°C on Sat morning). Winds decreasing (strong winds from the W on Sat morning, light winds from the W by Sun night). | ||||||||||||||||||||
Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | |||||||||||||||
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 17 | SW 16 | SW 15 | WSW 14 | WSW 14 | WSW 13 | WSW 12 | WSW 12 | W 12 | WSW 13 | WSW 16 | WSW 15 | WSW 14 | SW 13 | SW 13 | SW 11 | SW 14 | SW 12 | SW 15 | SW 14 | SW 13 |
Wave Graph | |||||||||||||||||||||
4536 | 3784 | 2665 | 3813 | 3260 | 2036 | 1390 | 1098 | 6482 | 9950 | 11024 | 6144 | 3997 | 3489 | 3550 | 1121 | 1238 | 1959 | 6004 | 4981 | 3975 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | cross-on | cross-on | off | cross | cross | cross-on | on | on | on | on | on | cross-on | cross-on | cross-on | on | on | on | cross |
High Tide | 9:44AM1.10m | 10:17AM1.03m | 10:42AM0.93m | 10:50AM0.82m | 10:19AM0.72m | 7:20AM0.67m | 3:33AM0.72m | 4:03AM0.78m | |||||||||||||
Low Tide | 7:15PM0.32m | 7:45PM0.38m | 8:00PM0.45m | 7:43PM0.50m | 6:40PM0.52m | 5:16PM0.50m | 4:28PM0.44m | ||||||||||||||
7:22 | — | — | 7:22 | — | — | 7:22 | — | — | 7:22 | — | — | 7:20 | — | — | 7:20 | — | — | 7:20 | — | — | |
— | 5:28 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — | — | 5:30 | — | — | 5:31 | — | — | 5:31 | — | |
mm | — | — | 3 | 6 | 2 | — | 1 | 4 | 7 | 2 | 2 | 2 | 1 | — | — | 1 | 2 | 5 | — | — | 6 |
Temp °C | 17 | 19 | 20 | 18 | 17 | 16 | 17 | 16 | 17 | 14 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 17 | 16 | 16 | 16 |
Feels °C | 10 | 12 | 15 | 10 | 15 | 15 | 13 | 12 | 10 | 4 | 8 | 8 | 9 | 9 | 10 | 9 | 9 | 11 | 8 | 9 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 17 | SW 16 | SW 15 | WSW 14 | WSW 14 | WSW 13 | WSW 12 | WSW 12 | — | WSW 13 | WSW 16 | WSW 15 | WSW 14 | SW 13 | SW 13 | SW 11 | SW 14 | SW 12 | SW 15 | SW 14 | SW 13 |
4536 | 3784 | 2665 | 3813 | 3260 | 2036 | 1390 | 1098 | — | 9950 | 11024 | 6144 | 3997 | 3489 | 3550 | 1121 | 1238 | 1959 | 6004 | 4981 | 3975 | |
Swell 2 Height (m) Direction Period (s) | NW 13 | WNW 14 | WNW 13 | NNW 7 | NNW 7 | NW 7 | WNW 12 | S 11 | — | S 9 | — | — | — | — | — | SW 13 | S 17 | SW 20 | — | — | — |
7 | 18 | 17 | 327 | 140 | 143 | 14 | 2 | — | 7 | — | — | — | — | — | 704 | 6 | 98 | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | WNW 8 | WNW 13 | WNW 12 | S 11 | S 11 | — | — | — | — | — | — | — | S 18 | S 18 | S 17 | — | — | — |
— | — | — | 211 | 16 | 14 | 3 | 2 | — | — | — | — | — | — | — | 6 | 6 | 6 | — | — | — | |
Wind waves Height (m) Direction Period (s) | N 6 | NNW 7 | NNW 7 | — | — | — | NW 7 | NW 7 | W 12 | — | — | — | — | — | — | — | SW 10 | — | — | — | — |
264 | 461 | 515 | — | — | — | 263 | 410 | 6482 | — | — | — | — | — | — | — | 535 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 875 | 159 | 689 | 2 | 20 | 0 | 53 | 53 | 251 | 359 | 251 | 251 | 89 | 2 | 174 | 251 | 251 | 251 | 502 | 569 | 502 |
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.










