Surf Forecasts:
Margaret River Mouth surf forecast from 20 Jul 2026:
- Best quality surf: Wednesday 22 Jul, 8AM (local time) - 6ft (1.8m), 14s period, SW swell with offshore winds.
- Most powerful swell: Monday 27 Jul, 2AM (local time) - 13ft (4.0m), 13s period, SW swell with 4,552 kJ wave energy.
- Next surfable swell (1★+): Tuesday 21 Jul, 5PM (local time) - 4.5ft (1.3m), 13s 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 Tuesday (Jul 21) at 5PM. The primary swell is predicted to be 1.3m and 13s period with a secondary swell of 0.1m and 18s. 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 4.0m 13s and forecast to arrive on Monday (Jul 27) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 7s period and expected on Sunday (Jul 26) at 2AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Tue 21st Jul) | 4.5ft (1.3m) 13s |
| Best Surf | 8AM (Wed 22nd Jul) | 6ft (1.8m) 14s |
| Most Powerful | 2AM (Mon 27th Jul) | 13ft (4.0m) 13s |
Table - best surf conditions forecast for Margaret River Mouth over the next 16 days.
The Lowdown
G’day, Rusty here, lookin’ at the next stretch from Margaret River Mouth. It’s a bit of a mixed bag, but there’s a real gem hiding in there if you’re patient.
Alright, so the first few days are a bit of a write-off. Monday and Tuesday have some swell around, but the wind is swingin’ onshore or cross, and the conditions are just poor. The water’s a touch warmer than normal at 67°, which is nice, but that’s about the only bright spot. You’ll be waitin’ until Wednesday morning, 22 July, for the real deal to switch on.
That Wednesday morning is the standout. The swell bumps up to 6 ft out of the SW, with a long 15-second period – that’s proper groundswell, full of energy (combined energy of 1474). And the wind? Glassin’ off from the east at 6 mph, so it’s gonna be clean as a whistle. This is a river mouth break, so that long period stuff will peel nicely, and it’s sheltered, so it doesn’t cop the full brunt. The wave comment says “very good surf conditions,” and I’m all in. This is your window. The break is very consistent, so you’ll get plenty of waves, but it’s a beginner spot, so it’s not gonna be too heavy for an average surfer.
Thursday, 23 July, keeps the fun going. Morning surf is 4 ft SW with a 14-second period, and a light NE wind. Still clean. But the afternoon is a proper treat – glassy, with a N wind at 0 mph, and 4 ft SW swell. That’s a magic session right there.
Friday, 24 July, drops off a bit. Swell down to 3 ft, period gone to 12 seconds, and the wind is cross-off. It’s surfable, but ordinary. Then Saturday and Sunday, 25-26 July, are rough. Saturday is a cross-shore mess with onshore winds, and Sunday gets a fresh cross-onshore that’s lumpy, even though the swell is 6 ft. That’s more of a kite-surfing setup than a paddle day.
Now, Monday 27 July and Tuesday 28 July are a bit of a weird one. Monday has 7 ft SW swell with a 12-second period, but the wave comment says “marginal” – probably tide issues. The wind is cross-off from the SE, so it’s clean, but the size is gettin’ into expert territory over 8 ft on the Sunday afternoon. Tuesday 28 July, though, is another solid pick. Morning brings 5 ft SSW swell, a 14-second period, and a clean offshore from the ENE at 12 mph. The wave comment says “very good surf conditions,” and the combined energy is 1150 – that’s a punchy wave. That’s your second-best window.
After that, the final week of July and into August is a slow fade. Wednesday 29 July has some proper long-period 16-second swell at 5 ft, but the wind is gettin’ up to 16 mph and the score is marginal. Things get poor from 30 July onward, with tiny swell and strong winds. By 4 August, the swell jumps to 12 ft, but it’s onshore and lumpy – that’s a big, messy cleanup set.
So, overall, the clear winner is Wednesday morning 22 July. If you can’t make that, Tuesday 28 July is your second shout. The rest of the run is mostly small or messy, with a few ordinary days in between. There’s a big gap of poor conditions from 30 July through to 4 August, so don’t hold your breath for that stretch.
Stay salty,
Rusty
Short Range ForecastLight rain (total 4mm), mostly falling on Mon night. Very mild (max 16°C on Wed afternoon, min 12°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 18°C on Sat night, min 11°C on Thu morning). Winds increasing (calm on Thu afternoon, fresh winds from the NW by Sat night). | ||||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | |||||||||||||||
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 13 | SW 14 | SW 12 | SW 14 | SW 13 | SW 13 | SW 15 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 13 | WSW 13 | WSW 12 | WSW 10 | SW 12 | SW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 529 | 506 | 593 | 769 | 529 | 690 | 1474 | 1325 | 992 | 621 | 451 | 331 | 212 | 178 | 134 | 241 | 206 | 123 | 631 | 2233 | 4552 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross | cross | cross-off | cross-off | off | cross-off | off | cross-off | glassy | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-on | cross-on | cross-off | cross-off |
High Tide | 8:19AM0.46m | 4:32AM0.52m | 4:53AM0.57m | 5:31AM0.62m | 6:14AM0.67m | 6:57AM0.70m | 7:38AM0.73m | ||||||||||||||
Low Tide | 5:09PM0.28m | 4:14PM0.22m | 4:09PM0.16m | 4:22PM0.12m | 4:40PM0.09m | 5:01PM0.07m | 5:24PM0.06m | ||||||||||||||
 |  |  | | |  | | |  |  | | | | | | | |  |  |  |  | |
 | 7:20 | — | — | 7:20 | — | — | 7:20 | — | — | 7:18 | — | — | 7:18 | — | — | 7:18 | — | — | 7:16 | — | — |
 | — | 5:30 | — | — | 5:31 | — | — | 5:32 | — | — | 5:32 | — | — | 5:34 | — | — | 5:35 | — | — | 5:35 | — |
mm | — | 1 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 10 | 21 |
Temp °C | 15 | 15 | 15 | 14 | 14 | 14 | 13 | 16 | 14 | 12 | 15 | 14 | 12 | 14 | 14 | 15 | 17 | 18 | 18 | 17 | 11 |
Feels °C | 10 | 10 | 11 | 9 | 10 | 10 | 10 | 12 | 10 | 8 | 12 | 12 | 9 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 7 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 14 | SW 12 | SW 14 | SW 13 | SW 13 | SW 15 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 13 | WSW 13 | WSW 12 | SW 15 | — | — |
| kJ | 529 | 506 | 593 | 769 | 529 | 690 | 1474 | 1325 | 992 | 621 | 451 | 331 | 212 | 178 | 134 | 241 | 206 | 123 | 390 | — | — |
Swell 2 Height (m) Direction Period (s) | S 11 | — | — | — | SW 18 | — | — | — | — | W 20 | N 5 | W 17 | WSW 16 | WSW 15 | WSW 14 | SW 18 | SW 17 | SW 16 | — | — | — |
| kJ | 9 | — | — | — | 12 | — | — | — | — | 7 | 2 | 23 | 26 | 45 | 82 | 12 | 46 | 87 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | W 18 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 6 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | NNE 5 | N 5 | N 5 | NNW 6 | NNW 5 | NNW 6 | NW 7 | WSW 10 | SW 12 | SW 13 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 3 | 7 | 9 | 10 | 20 | 36 | 164 | 631 | 2233 | 4552 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 48 | 96 | 31 | 31 | 0 | 0 | 0 | 12 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 33 | 43 | 135 | 885 | 31 | 94 |
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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