Surf Forecasts:
Margaret River Mouth surf forecast from 12 Sep 2026:
- Best quality surf: Monday 14 Sep, 8PM (local time) - 6ft (1.8m), 14s period, SW swell with offshore winds.
- Most powerful swell: Sunday 13 Sep, 8PM (local time) - 6ft (1.9m), 14s period, WSW swell with 1,525 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 8PM (local time) - 6ft (1.8m), 14s 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 14) at 8PM. The primary swell is predicted to be 1.8m and 14s period with a secondary swell of 0.1m and 21s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Margaret River Mouth in the next 16 days are 1.9m 14s and forecast to arrive on Sunday (Sep 13) at 8PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 7s period and expected on Friday (Sep 18) at 2AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Mon 14th Sep) | 6ft (1.8m) 14s |
| Best Surf | 8PM (Mon 14th Sep) | 6ft (1.8m) 14s |
| Most Powerful | 8PM (Sun 13th Sep) | 6ft (1.9m) 14s |
Table - best surf conditions forecast for Margaret River Mouth over the next 16 days.
The Lowdown
Alright, Rusty here again. Let's break down what's looking good at the Margaret River Mouth for the next little while.
It starts off a bit rough, but after that initial mess, the quality cranks up. We're gonna see some real clean windows.
Right now, it's a no-go. A strong 15 mph cross-onshore wind is making a 5ft WSW swell choppy and ugly. The energy's there, but it's blown out.
Monday morning (September 14th) is where the party starts. A light 6 mph cross-offshore breeze from the SE cleans the surface right up. You've got a solid 6ft SW groundswell rolling in with a 14-second period. This is proper energy (1368 reading) and the river mouth can handle that SW direction nicely.
Tuesday morning (September 15th) is glassy. No wind at all. The water is flat. You'll be surfing a clean 5ft SW swell with that same 14-second pulse. Perfect conditions for this spot.
The swell drops mid-week. Wednesday and Thursday see size down to 3ft-3ft. It's crossed up and sloppy. Not worth the drive.
There's a quiet patch until Friday morning (September 18th). We get a fresh 22 mph cross-offshore from the SE, which keeps the 5ft SW swell clean. The 15-second period adds some power. It's rideable but that fresh wind makes it a bit rough around the edges.
Another gap follows. But hold on for Saturday, September 26th. This is the set of the run. The whole day is gold. A gentle 9 mph offshore ESE wind in the morning, then offshore from the east in the afternoon. Swell sits at 6ft to 6ft from the SW (14 second period), with energy readings of 1484 and 1155. That offshore wind will groom every wave into perfect shape. Long-range, but this is the one to circle.
Sunday, September 27th is no slouch either. A solid 6ft SW swell with a 15-second period. Light cross-offshore winds. You'll be surfing clean lines all day.
Water temp is about average for this time of year. And yeah, crowds can pop up at the river mouth, but with quality swell on the way, there's enough to go around.
Rusty, signing off.
Short Range ForecastSome drizzle, heaviest during Sun night. Warm (max 22°C on Tue afternoon, min 10°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 16mm), heaviest on Fri night. Warm (max 24°C on Wed afternoon, min 12°C on Fri afternoon). Winds increasing (light winds from the E on Wed night, strong winds from the S by Fri afternoon). | ||||||||||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | |||||||||||||||
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 13 | WSW 14 | WSW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | WSW 15 | WSW 14 | WSW 13 | WSW 17 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | SW 13 | SW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 778 | 1301 | 1388 | 1368 | 1438 | 1289 | 1094 | 992 | 632 | 345 | 239 | 272 | 357 | 229 | 184 | 973 | 1151 | 1151 | 585 | 1288 | 987 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-off | cross-off | cross-off | off | glassy | cross-off | off | cross-off | cross | cross-off | cross | cross | cross | cross | cross | cross-on | on | cross-off | off |
High Tide | 11:06AM0.41m | 10:36PM0.57m | 10:27AM0.32m | 10:42PM0.62m | 10:56PM0.65m | 11:18PM0.66m | 11:47PM0.65m | 00:26AM0.63m | 4:40AM0.60m | ||||||||||||
Low Tide | 3:31PM0.34m | 6:18AM0.30m | 2:31PM0.30m | 1:40PM0.24m | 1:47PM0.18m | 2:09PM0.14m | 2:32PM0.12m | 2:55PM0.10m | |||||||||||||
 | |  |  | |  | | | | | | | | | |  |  |  |  | | | |
 | 6:22 | — | — | 6:22 | — | — | 6:20 | — | — | 6:18 | — | — | 6:16 | — | — | 6:16 | — | — | 6:15 | — | — |
 | — | 6:08 | — | — | 6:09 | — | — | 6:09 | — | — | 6:10 | — | — | 6:12 | — | — | 6:13 | — | — | 6:13 | — |
mm | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 5 | 10 | — | 2 | — |
Temp °C | 16 | 17 | 17 | 15 | 17 | 15 | 19 | 22 | 20 | 21 | 24 | 22 | 21 | 19 | 19 | 19 | 18 | 15 | 15 | 15 | 13 |
Feels °C | 12 | 12 | 14 | 11 | 12 | 11 | 18 | 21 | 18 | 18 | 22 | 21 | 16 | 16 | 16 | 15 | 15 | 7 | 9 | 10 | 8 |
Swell 1 Height (m) Direction Period (s) | WSW 13 | WSW 14 | WSW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | WSW 15 | WSW 14 | WSW 13 | SW 13 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | SW 13 | SW 13 |
| kJ | 778 | 1301 | 1388 | 1368 | 1438 | 1289 | 1094 | 992 | 632 | 345 | 239 | 272 | 357 | 229 | 167 | 973 | 1151 | 1151 | 585 | 1288 | 987 |
Swell 2 Height (m) Direction Period (s) | WSW 17 | — | — | — | — | — | — | — | SE 7 | S 13 | SW 16 | SSW 11 | S 11 | WSW 18 | WSW 17 | WSW 8 | — | — | — | — | — |
| kJ | 246 | — | — | — | — | — | — | — | 18 | 119 | 66 | 41 | 9 | 32 | 184 | 84 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | S 13 | — | SSW 13 | — | SE 8 | S 11 | S 10 | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 14 | — | 56 | — | 2 | 9 | 2 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | SE 4 | — | NE 4 | N 5 | NNE 4 | N 5 | NNW 5 | NW 7 | — | — | — | WSW 9 | — | — |
| kJ | — | — | — | — | — | — | — | 4 | — | 4 | 2 | 2 | 12 | 23 | 109 | — | — | — | 227 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 356 | 356 | 20 | 7 | 12 | 0 | 0 | 0 | 0 | 15 | 3 | 3 | 151 | 245 | 43 | 194 | 245 | 409 | 2001 | 1936 | 0 |
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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