
Surf Forecasts:
Cobblestones surf forecast from 17 Jul 2026:
- Best quality surf: Saturday 18 Jul, 5PM (local time) - 16ft (5.0m), 16s period, WSW swell with onshore winds.
- Most powerful swell: Saturday 18 Jul, 2PM (local time) - 18ft (5.5m), 16s period, WSW swell with 13,731 kJ wave energy.
- Next surfable swell (1★+): Saturday 18 Jul, 5PM (local time) - 16ft (5.0m), 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 Saturday (Jul 18) at 5PM. The primary swell is predicted to be 5.0m and 16s period with a secondary swell of 4.5m and 16s. The wind is predicted to be onshore 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.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Sat 18th Jul) | 16ft (5.0m) 16s |
| Best Surf | 5PM (Sat 18th Jul) | 16ft (5.0m) 16s |
| Most Powerful | 2PM (Sat 18th Jul) | 18ft (5.5m) 16s |
Table - best surf conditions forecast for Cobblestones over the next 16 days.
The Lowdown
G’day, Rusty here. We’ve got a real mixed bag coming up at Cobblestones. This exposed reef break is about to get hammered by a lot of south-west swell, but conditions are going to be tricky for a while. The ocean’s sitting at 67°F, a touch warmer than usual for this time of year – you won’t need the thickest rubber.
The first window worth paddling out for is Friday the 17th of July, late afternoon. It’s not a classic, but you’ll find 6ft of groundswell out of the WSW with a 12-second period. The wind is a cross-off NNE breeze at 16 mph, keeping the surface clean, but the combined wave energy is only moderate (1063). It’s a solid session for the experienced mob, but don’t expect perfection – the tide might throw a few lumps at you.
The real standout, and I mean the one to circle on your calendar, is Wednesday the 22nd of July, the morning session. The wind drops right out to glass – a complete glass-off – with only 3 mph from the NNE. That’s going to leave the 10ft swell (SW, 13 seconds) looking like a mirror. The energy is up there (3581), so the reef will be working. This is for the advanced crew only – it’s 10ft, which is proper. You’ll be threading some beautiful lines.
Thursday the 23rd morning is another crisp option with 10ft (SW, 14 seconds) and light cross-off air from the north at 6 mph. Clean again, and the energy is solid (2947). After that, things get messy. Saturday the 25th and Sunday the 26th have swell, but the wind swings onshore or cross-on, and the surface gets chopped. Sunday the 26th afternoon sees a big jump in period – 13ft, 17 seconds, from SW – but it’s cross-shore wind (12 mph) and the energy is massive (8744). It’s a raw, powerful day, but not clean enough for my taste.
Look out for Tuesday the 28th of July. The morning goes glassy again, with 8ft (SW, 13 seconds) and a pure easterly glass-off at 3 mph. That’s another little gem – low combined energy (2417) but perfect conditions for the experienced surfer. The afternoon stays clean with a cross-off breeze.
A heads-up: from Thursday the 30th onwards, we’re looking at a big, blown-out mess. Winds crank up onshore, swells push over 12ft and up to 23ft on the 1st of August, and the wave energy readings are off the charts (up to 22434). That’s serious power, but with the wind and the size, it’s only for the lunatics in the crew – and honestly, the setup looks more interesting for kite surfing than a paddle session. The conditions will be cross-onshore and lumpy.
So, my pick: Wednesday the 22nd of July morning, no question. Glassy offshores, solid 10ft groundswell, and a reef that’ll handle the energy. Get out there before it turns nasty.
Rusty.
Short Range ForecastModerate rain (total 14mm), heaviest on Fri night. Very mild (max 17°C on Fri afternoon, min 14°C on Fri night). Winds decreasing (strong winds from the WNW on Fri night, calm by Sun night). | Days 5-7 Weather SummaryLight rain (total 4mm), mostly falling on Mon night. Very mild (max 16°C on Mon afternoon, min 11°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Fri 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | ||||||||||||||
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 | W 13 | WSW 12 | WSW 16 | WSW 15 | WSW 14 | WSW 13 | SW 13 | SW 13 | SW 14 | SW 11 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 14 | SW 14 | SW 14 | SW 13 |
Wave Graph | ||||||||||||||||||||
1047 | 6276 | 7731 | 12083 | 6855 | 4097 | 3010 | 2576 | 2114 | 2155 | 1840 | 2775 | 2692 | 3020 | 3581 | 3415 | 3436 | 2940 | 2323 | 1834 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | on | on | cross-on | on | cross-on | cross-on | cross-on | on | cross-on | cross | cross-on | cross-off | glassy | on | off | cross-off | cross-on | cross |
High Tide | 10:50AM0.82m | 10:19AM0.72m | 7:20AM0.67m | 3:33AM0.72m | 4:03AM0.78m | 4:52AM0.84m | ||||||||||||||
Low Tide | 8:00PM0.45m | 7:43PM0.50m | 6:40PM0.52m | 5:16PM0.50m | 4:28PM0.44m | 4:18PM0.38m | 4:25PM0.34m | |||||||||||||
— | — | 7:22 | — | — | 7:20 | — | — | 7:20 | — | — | 7:20 | — | — | 7:18 | — | — | 7:18 | — | — | |
5:30 | — | — | 5:30 | — | — | 5:30 | — | — | 5:31 | — | — | 5:31 | — | — | 5:32 | — | — | 5:32 | — | |
mm | — | 6 | 3 | 1 | 1 | 1 | — | — | 2 | 1 | 3 | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 17 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 15 | 14 | 15 | 13 | 12 | 13 | 14 | 13 | 15 | 15 |
Feels °C | 11 | 11 | 4 | 7 | 8 | 10 | 11 | 12 | 13 | 12 | 10 | 9 | 10 | 9 | 10 | 11 | 12 | 11 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | WSW 12 | — | — | WSW 16 | WSW 15 | WSW 14 | WSW 13 | SW 13 | SW 13 | SW 14 | SW 11 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 14 | SW 14 | SW 14 | SW 13 |
1047 | — | — | 12083 | 6855 | 4097 | 3010 | 2576 | 2114 | 2155 | 1840 | 2775 | 2692 | 3020 | 3581 | 3415 | 3436 | 2940 | 2323 | 1834 | |
Swell 2 Height (m) Direction Period (s) | WNW 12 | — | — | — | — | — | — | SSW 13 | S 11 | S 18 | S 18 | — | — | — | — | — | — | W 19 | W 18 | S 13 |
14 | — | — | — | — | — | — | 679 | 188 | 6 | 6 | — | — | — | — | — | — | 7 | 25 | 87 | |
Swell 3 Height (m) Direction Period (s) | S 11 | — | — | — | — | — | — | — | S 18 | — | — | — | — | — | — | — | — | — | — | — |
2 | — | — | — | — | — | — | — | 7 | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | NNW 6 | W 13 | WSW 12 | WSW 16 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
150 | 6276 | 7731 | 10637 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 44 | 251 | 1689 | 359 | 251 | 2 | 2 | 2 | 20 | 35 | 35 | 0 | 20 | 0 | 0 | 2 | 0 | 0 | 2 | 10 |
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.










