Surf Forecasts:
Margaret River Mouth surf forecast from 6 Sep 2026:
- Best quality surf: Monday 7 Sep, 11AM (local time) - 6ft (1.8m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 8AM (local time) - 7ft (2.1m), 17s period, SW swell with 2,340 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 11AM (local time) - 6ft (1.8m), 16s period with SW swell.
Best Forecast Surf Conditions for Margaret River Mouth this week:
The surf forecast for Margaret River Mouth over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 07) at 11AM. The primary swell is predicted to be 1.8m and 16s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Margaret River Mouth in the next 16 days are 2.1m 17s and forecast to arrive on Tuesday (Sep 08) at 8AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 6s period and expected on Tuesday (Sep 08) at 5PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Mon 7th Sep) | 6ft (1.8m) 16s |
| Best Surf | 11AM (Mon 7th Sep) | 6ft (1.8m) 16s |
| Most Powerful | 8AM (Tue 8th Sep) | 7ft (2.1m) 17s |
Table - best surf conditions forecast for Margaret River Mouth over the next 16 days.
The Lowdown
Alright folks, Rusty here with a look at what's on the table for the next couple of weeks. We’re dialed in on one spot, and it's got a bit of a mixed bag coming.
Right off the bat, the standout window for the best waves is Monday the 7th of September. We’ve got a solid groundswell wrapping in from the SW with a long, powerful 16-second period pushing the energy meter up. The swell is sitting around 6 ft, so it’s a bit of a step up, not a day for absolute beginners, but definitely one for anyone who's comfortable. The wind is a clean cross-off from the SSE at 9 mph, which should keep the surface nice. It’s a river mouth, so that long-period groundswell is going to line up beautifully on the banks, offering some proper shape. This is a very consistent break, so there will be plenty of waves to go around.
After that Monday morning window, things start to get a bit trickier. Through the rest of the week, the wind stiffens up, turning more cross-off and cross, and the quality drops off. The surf stays in the 3 ft to 6 ft range, but the wind just isn't as kind, and the scores reflect that. There’s a potential little pocket on Wednesday the 9th morning with a lighter NE breeze and 5 ft swell, but it’s not going to be as clean as that Monday opener.
We hit a real rough patch starting Friday the 11th and running all the way through to the 22nd. A lot of onshore wind – mostly from the west and northwest – just blowing the surf to pieces. Even though there are some decent sized swells in there, like a 7 ft wave on the 13th, the wind is just hammering it, making it choppy and messy. It’s just not worth paddling out for. For the most part, you’re looking at poor conditions with strong onshore winds. This setup would be way more appealing for kite surfing than trying to get a clean paddle wave. That said, the very last day of the outlook, Sunday the 20th of September, is worth noting. The wind swings around to a light N breeze, with a 7 ft SW groundswell. It’s still a bit of a gamble this far out, but it could clean up into something worthwhile if the forecast holds. Keep an eye on it.
Stay patient, and wait for that clean window.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Wed afternoon, min 11°C on Sun night). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 4mm), mostly falling on Fri night. Very mild (max 19°C on Wed night, min 12°C on Thu morning). Winds increasing (light winds from the NNW on Thu afternoon, fresh winds from the W by Sat morning). | ||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | ||||||||||||||
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 16 | SW 16 | WSW 16 | SW 16 | WSW 16 | WSW 15 | SW 15 | SW 15 | SW 14 | SW 15 | WSW 15 | WSW 14 | WSW 18 | WSW 16 | WSW 16 | WSW 15 | WSW 14 |
Wave Graph  | |||||||||||||||||||
 kJ | 2475 | 1591 | 1643 | 1880 | 2189 | 2133 | 1373 | 1028 | 905 | 640 | 407 | 418 | 443 | 413 | 954 | 1068 | 759 | 953 | 1154 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | cross | cross-off | cross-on | cross-on | cross-on | on | on | on |
High Tide | 6:59AM0.75m | 7:55AM0.76m | 8:44AM0.73m | 00:04AM0.36m | 9:28AM0.68m | 11:05PM0.38m | 10:07AM0.60m | 10:45PM0.44m | 10:42AM0.50m | 10:37PM0.51m | |||||||||
Low Tide | 4:06PM-0.02m | 4:37PM0.03m | 5:02PM0.10m | 1:46AM0.36m | 5:17PM0.19m | 3:11AM0.33m | 5:11PM0.28m | 4:12AM0.30m | 4:29PM0.34m | ||||||||||
 |  | | | | | | | | | |  |  | | |  |  | | | |
 | — | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — |
 | 6:04 | — | 6:05 | — | — | 6:06 | — | — | 6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 1 | — | — |
Temp °C | 12 | 15 | 17 | 13 | 16 | 20 | 15 | 17 | 21 | 19 | 16 | 19 | 17 | 19 | 18 | 18 | 16 | 16 | 16 |
Feels °C | 6 | 12 | 12 | 7 | 11 | 15 | 10 | 12 | 19 | 16 | 11 | 16 | 15 | 17 | 15 | 16 | 10 | 11 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 17 | SW 16 | SW 16 | SW 16 | WSW 16 | SW 16 | WSW 16 | WSW 15 | SW 15 | SW 15 | SW 14 | SW 15 | WSW 15 | WSW 14 | WSW 18 | WSW 16 | WSW 16 | WSW 15 | WSW 18 |
| kJ | 2475 | 1591 | 1643 | 1880 | 2189 | 2133 | 1373 | 1028 | 905 | 640 | 407 | 418 | 443 | 413 | 954 | 1068 | 759 | 953 | 64 |
Swell 2 Height (m) Direction Period (s) | SSE 10 | — | — | — | — | — | — | SE 7 | SSE 7 | SW 26 | WSW 24 | N 6 | SW 21 | SW 19 | WSW 13 | — | — | — | — |
| kJ | 20 | — | — | — | — | — | — | 14 | 5 | 26 | 54 | 11 | 116 | 380 | 246 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | NNE 6 | S 12 | WSW 24 | SW 22 | S 11 | S 11 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 3 | 11 | 54 | 73 | 10 | 9 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | SSE 10 | — | SE 5 | SE 6 | SE 7 | NE 6 | — | NE 4 | N 6 | — | — | NNE 4 | — | NW 5 | W 6 | WSW 8 | WSW 14 |
| kJ | — | — | 10 | — | 14 | 60 | 33 | 11 | — | 4 | 20 | — | — | 6 | — | 14 | 36 | 125 | 1154 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 48 | 12 | 12 | 7 | 0 | 3 | 0 | 0 | 33 | 3 | 3 | 43 | 214 | 194 | 885 | 356 | 245 |
Best forecast wave conditions in Margaret River | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
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Information about the Margaret River Mouth Surf forecast
The above surf forecast table for Margaret River Mouth provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Margaret River Mouth can be found by selecting the local surf guide option on the grey menu. Our Margaret River Mouth 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 (Margaret River Mouth) 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 Margaret River Mouth 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.
Margaret River Mouth is 92 km (57 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.
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