
Surf Forecasts:
Cobblestones surf forecast from 13 Sep 2026:
- Best quality surf: Monday 14 Sep, 2PM (local time) - 11ft (3.5m), 14s period, SW swell with cross-offshore winds.
- Most powerful swell: Sunday 20 Sep, 2PM (local time) - 13ft (4.0m), 16s period, SW swell with 7,127 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 2PM (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 Monday (Sep 14) at 2PM. The primary swell is predicted to be 3.5m and 14s 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 Sunday (Sep 20) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 7s period and expected on Thursday (Sep 17) at 11PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Mon 14th Sep) | 11ft (3.5m) 14s |
| Best Surf | 2PM (Mon 14th Sep) | 11ft (3.5m) 14s |
| Most Powerful | 2PM (Sun 20th Sep) | 13ft (4.0m) 16s |
Table - best surf conditions forecast for Cobblestones over the next 16 days.
The Lowdown
G’day, Rusty here. Alright, let’s break down this stretch—there’s some proper swell on the cards, but you gotta pick your moments. The start is a bit meh, then we get a clean window, then it turns to mush, and then there’s a cracker of a day hiding in there.
First up, Monday the 14th is ordinary. You’ve got 3.5m of SW swell, but the tide’s iffy and the wind’s cross-off from the ESE at 15 km/h—clean enough, but it just doesn’t gel. Tuesday the 15th is better: 3.0m SW, but the morning picks up an offshore E breeze at only 10 km/h, and the surface is glassy. That’s the pick of the early days—solid, clean, and 14 seconds of period. Not epic, but fun.
Wednesday the 16th eases to 2.0m, dropping to 1.6m by the arvo, but the wind’s cross-off and light—workable for a grovel. Thursday the 17th is the dull one: just 1.6m with a cross-shore chop, not worth it.
Friday the 18th—this is where it heats up, but not in a good way. The swell jumps back to 3.0m, and the morning’s clean with a 15-second period and a fresh NNE cross-off at 30 km/h. But the afternoon turns to heavy rain and a strong cross-on from the SSW at 40 km/h. Total mess. Saturday the 19th is straight-up ugly—4.0m of SW but onshore winds and poor conditions. Don’t even look at it. Sunday the 20th is still big—4.0m—but the cross-shore wind from the NW at 20 km/h keeps it lumpy, even with a 16-second period in the arvo. Raw power, but messy.
Monday the 21st and Tuesday the 22nd are blown out with onshore winds—3.0m and 3.5m, but it’s chop city. Skip it.
Now, the standout. Thursday the 24th. This is the day. The swell is 3.5m from the SW with a 15-second period, and the morning wind is offshore from the NE at 20 km/h—moderate but clean. The wave comment says “exceptional” for experts, and I’m with it. This is proper groundswell, lined up and powerful. At this size, it’s strictly advanced—if you’re not charging, stay out. For those who are, it’s the best session of the whole two weeks. The afternoon loses it a bit—the wind swings cross-on from the S at 20 km/h—so hit it early.
There’s another potential standout further out, but it’s a gamble. On Saturday the 26th, we’ve got a massive 4.5m SW swell with a 19-second period—that’s very long period, serious energy. The morning wind is cross-off from the ESE at 20 km/h, so it’s clean, but that long period might make it break a bit too straight at this reef. Still, at that size, it’s going to be thumping. But it’s over a week away, so take it with a grain of salt. The energy levels are huge—14,648 units—so there’s no shortage of push.
Sunday the 27th drops to 3.0m but gets a 16-second period and gentle offshore winds in the arvo—clean and lined up, but not as heavy.
Water temps are about average for the season—nothing crazy, so a 3/2 works.
Crowds at Cobblestones are sometimes a factor, but on Thursday the 24th, the size will keep the crowd thin. This break is consistent, so you can rely on it.
Just remember: when the swell pushes past 2.5m, like on Friday the 18th, Saturday the 19th, and again on the 26th, that’s expert-only territory. Don’t get in over your head.
Bottom line—the first week has one clean morning on Tuesday, but the real prize is Thursday the 24th. Big, clean, offshore, and powerful. That’s your session. The end of the month has potential, but it’s too far out to bank on. Check the tides, be patient, and if you can get out Thursday morning, don’t miss it.
Rusty out.
Short Range ForecastMostly dry. Warm (max 23°C on Wed afternoon, min 10°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 36mm), heaviest during Fri afternoon. Warm (max 22°C on Wed night, min 11°C on Fri night). Winds increasing (light winds from the ENE on Wed night, gales from the SW by Fri night). | ||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||
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 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | WSW 14 | WSW 14 | WSW 13 | WSW 12 | WSW 15 | WSW 16 | WSW 15 | WSW 14 | SW 13 | SW 13 |
Wave Graph | |||||||||||||||||||
5399 | 5472 | 5417 | 4691 | 4009 | 3468 | 2534 | 1380 | 865 | 947 | 971 | 902 | 857 | 4503 | 4299 | 5627 | 6774 | 5775 | 3759 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | off | off | cross | off | cross-off | cross-off | off | cross | cross | cross-off | cross-off | cross-on | cross-on | on | on | on |
High Tide | 10:28PM0.67m | 10:57AM0.43m | 10:43PM0.72m | 9:41AM0.38m | 11:04PM0.76m | 11:28PM0.79m | 11:55PM0.81m | 00:25AM0.81m | 1:03AM0.80m | ||||||||||
Low Tide | 6:09AM0.37m | 2:41PM0.40m | 7:39AM0.38m | 2:06PM0.35m | 2:02PM0.31m | 2:13PM0.28m | 2:26PM0.27m | 2:39PM0.27m | |||||||||||
— | 6:22 | — | — | 6:20 | — | — | 6:18 | — | — | 6:16 | — | — | 6:16 | — | — | 6:15 | — | — | |
6:08 | — | 6:09 | — | — | 6:10 | — | — | 6:10 | — | — | 6:12 | — | — | 6:13 | — | — | 6:13 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 17 | 18 | — | — | 2 |
Temp °C | 17 | 15 | 17 | 15 | 16 | 21 | 19 | 21 | 23 | 22 | 19 | 19 | 18 | 19 | 19 | 14 | 15 | 15 | 16 |
Feels °C | 14 | 12 | 15 | 11 | 14 | 20 | 16 | 18 | 21 | 21 | 17 | 16 | 14 | 15 | 14 | 5 | 8 | 9 | 13 |
Swell 1 Height (m) Direction Period (s) | WSW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | WSW 14 | WSW 14 | WSW 13 | WSW 12 | WSW 15 | WSW 16 | WSW 15 | WSW 14 | SW 13 | SW 13 |
5399 | 5472 | 5417 | 4691 | 4009 | 3468 | 2534 | 1380 | 865 | 947 | 971 | 902 | 857 | 4503 | 4299 | 5627 | 6017 | 5775 | 3759 | |
Swell 2 Height (m) Direction Period (s) | — | W 24 | — | — | — | — | SE 7 | — | SW 16 | S 11 | S 11 | WSW 19 | WSW 17 | — | WNW 9 | — | — | — | — |
— | 11 | — | — | — | — | 65 | — | 362 | 121 | 58 | 140 | 481 | — | 339 | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | SE 6 | SW 22 | WSW 20 | ESE 8 | S 11 | S 10 | — | — | — | — | — | — |
— | — | — | — | — | — | — | 11 | 18 | 40 | 6 | 20 | 8 | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | ESE 6 | SSE 4 | — | NNE 4 | NNE 4 | NNE 3 | N 4 | NNW 5 | NW 7 | — | — | — | WSW 14 | — | — |
— | — | — | — | 20 | 16 | — | 12 | 7 | 6 | 24 | 95 | 363 | — | — | — | 6774 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 7 | 0 | 0 | 53 | 251 | 53 | 25 | 35 | 251 | 2004 | 1938 | 2 |
Best forecast wave conditions in Margaret River | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
Header Global | |||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.










