
Surf Forecasts:
Cobblestones surf forecast from 17 Jul 2026:
- Best quality surf: Sunday 19 Jul, 11PM (local time) - 10ft (3.0m), 13s period, SW swell with glassy winds.
- Most powerful swell: Saturday 18 Jul, 2PM (local time) - 18ft (5.5m), 16s period, WSW swell with 13,838 kJ wave energy.
- Next surfable swell (1★+): Sunday 19 Jul, 11PM (local time) - 10ft (3.0m), 13s 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 Sunday (Jul 19) at 11PM. The primary swell is predicted to be 3.0m and 13s period with a secondary swell of 1.5m and 13s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Cobblestones in the next 16 days are 5.5m 16s and forecast to arrive on Saturday (Jul 18) at 2PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Thursday (Jul 23) at 2PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sun 19th Jul) | 10ft (3.0m) 13s |
| Best Surf | 11PM (Sun 19th Jul) | 10ft (3.0m) 13s |
| Most Powerful | 2PM (Sat 18th Jul) | 18ft (5.5m) 16s |
Table - best surf conditions forecast for Cobblestones over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at the only game in town for the next couple of weeks.
Right off the bat, the first few days are a write-off. We’re dealing with a massive, powerful swell from the WSW, but it’s getting hammered by strong onshore winds. Cobblestones is a reef break, so it needs clean conditions, but we’re seeing a solid 18 ft swell with 25 mph winds from the west on Saturday morning. The combined energy is a massive 8292 (moderate to strong), but the onshore wind is trashing it. Saturday afternoon brings a 16 ft swell at a very long 16-second period, and the energy jumps to 12068 (very strong), but again, poor surf conditions. Sunday is a bit smaller at 12 ft, but the wind is still on it, making it marginal at best. The first few days are a complete washout for a proper surf.
We’ve got a gap of a few days with no real standout until we get to Thursday morning, the 23rd of July. That’s when things start to get interesting. We’ve got an 8 ft SW swell (13-second period) with a nice cross-offshore wind from the north. The combined energy is 2484 (moderate), and the description says “excellent surf conditions for experienced surfers”. This is a clean window, and for a reef, that’s a good sign. The water temp is about average for the time of year, so nothing wild there.
But the real standout, the one you’ve been waiting for, is the end of the month. Friday the 31st of July is absolute gold. The afternoon session looks exceptional. We’re looking at a 10 ft WSW swell with a very long 18-second period, combined energy of 6331 (very strong), and light offshore winds from the northeast. The description says “exceptional surf conditions for expert surfers”. This is a proper groundswell, and for a reef like Cobblestones, that long period will wrap in beautifully. The 18-second period means the sets will be spaced out, making the paddle out feel easier, but at 10 ft, this is strictly for experts. It’s too big for beginners.
A couple of other days are worth a mention. The morning of Monday the 27th of July has an 8 ft SW swell (15-second period) with offshore wind from the northeast. That’s clean, good for experienced surfers. And then Saturday the 29th of July is pumping again with a 16 ft SW swell, but the cross-shore wind will make it a bit lumpy, so it’s marginal. Still, that’s a lot of energy (13874 on the Wednesday morning) for someone who knows what they’re doing.
Overall, the first week is a bust. The second week, especially the 31st, is the one to circle. Get ready for some big, clean, powerful waves at Cobblestones. The crowds are listed as “sometimes”, so you might get a few others out there, but with that size, it’ll thin out quick.
Rusty.
Short Range ForecastModerate rain (total 12mm), heaviest on Sat morning. Very mild (max 16°C on Sun afternoon, min 13°C on Sun night). Winds decreasing (strong winds from the W on Sat morning, calm by Sun night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 15°C on Tue night, min 13°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||
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) | WSW 12 | WSW 16 | WSW 15 | WSW 14 | WSW 13 | SW 12 | SW 13 | SW 14 | SW 13 | SW 14 | SW 13 | SW 13 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | WSW 11 |
Wave Graph | |||||||||||||||||||||
8948 | 12531 | 6976 | 4097 | 2964 | 1952 | 2049 | 2317 | 2570 | 2967 | 2522 | 3174 | 4207 | 4586 | 3569 | 2557 | 1474 | 1541 | 1387 | 1344 | 859 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | cross-on | glassy | cross-on | on | cross-on | cross-on | cross-on | cross | off | glassy | off | cross-off | cross-off | cross-off | cross | cross-on | on |
High Tide | 10:50AM0.82m | 10:19AM0.72m | 7:20AM0.67m | 3:33AM0.72m | 4:03AM0.78m | 4:52AM0.84m | 5:39AM0.90m | ||||||||||||||
Low Tide | 7:43PM0.50m | 6:40PM0.52m | 5:16PM0.50m | 4:28PM0.44m | 4:18PM0.38m | 4:25PM0.34m | 4:37PM0.32m | ||||||||||||||
7:22 | — | — | 7:20 | — | — | 7:20 | — | — | 7:20 | — | — | 7:18 | — | — | 7:18 | — | — | 7:18 | — | — | |
— | 5:30 | — | — | 5:30 | — | — | 5:31 | — | — | 5:31 | — | — | 5:32 | — | — | 5:32 | — | — | 5:34 | — | |
mm | 3 | 1 | — | 3 | — | — | 2 | 1 | 2 | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 14 | 15 | 15 | 15 | 16 | 15 | 15 | 16 | 16 | 14 | 14 | 15 | 14 | 15 | 15 | 13 | 14 | 15 | 18 | 18 | 17 |
Feels °C | 4 | 8 | 8 | 11 | 12 | 13 | 12 | 10 | 11 | 10 | 9 | 12 | 11 | 14 | 13 | 10 | 11 | 12 | 13 | 14 | 13 |
Swell 1 Height (m) Direction Period (s) | — | WSW 16 | WSW 15 | WSW 14 | WSW 13 | SW 12 | SW 13 | SW 14 | SW 13 | SW 14 | SW 13 | SW 13 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | WSW 11 |
— | 12531 | 6976 | 4097 | 2964 | 1952 | 2049 | 2317 | 2570 | 2967 | 2522 | 3174 | 4207 | 4586 | 3569 | 2557 | 1474 | 1541 | 1387 | 1344 | 859 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | S 12 | SSW 14 | — | S 18 | — | — | — | — | SW 16 | — | — | SSW 17 | SSW 15 | W 18 | S 12 | S 12 | WSW 15 |
— | — | — | — | 69 | 681 | — | 6 | — | — | — | — | 261 | — | — | 476 | 304 | 25 | 153 | 102 | 172 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 18 | — | — | — | S 11 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 25 | — | — | — | 40 | |
Wind waves Height (m) Direction Period (s) | WSW 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | N 4 | N 5 | N 3 | NNW 3 | NNW 4 |
8948 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 8 | 7 | 3 | 3 | 3 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 251 | 1689 | 251 | 251 | 2 | 1 | 2 | 35 | 159 | 1 | 1 | 1 | 1 | 2 | 2 | 0 | 0 | 27 | 7 | 53 | 53 |
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.










