Margaret River Mouth Surf Break

Lat Long: 33.97° S 114.98° E

Margaret River Mouth Surf Forecast and Surf Report

Issued: 7 pm 10 Aug 2026 (local time)

Forecast update in  hr  min

Today's Margaret River Mouth sea temperature is
19.7° C
2.3° 

Margaret River Mouth surf forecast from 10 Aug 2026:

  • Best quality surf: Thursday 13 Aug, 11PM (local time) - 7ft (2.1m), 16s period, SW swell with offshore winds.
  • Most powerful swell: Tuesday 11 Aug, 5AM (local time) - 10ft (3.0m), 16s period, SW swell with 5,041 kJ wave energy.
  • Next surfable swell (1★+): Thursday 13 Aug, 2AM (local time) - 6.5ft (2.0m), 15s 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 Thursday (Aug 13) at 2AM. The primary swell is predicted to be 2.0m and 15s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Margaret River Mouth in the next 16 days are 3.0m 16s and forecast to arrive on Tuesday (Aug 11) at 5AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 4s period and expected on Sunday (Aug 16) at 2PM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Thu 13th Aug)6.5ft (2.0m) 15s
Best Surf11PM (Thu 13th Aug)7ft (2.1m) 16s
Most Powerful 5AM (Tue 11th Aug)10ft (3.0m) 16s

Table - best surf conditions forecast for Margaret River Mouth over the next 16 days.


The Lowdown

G’day, Rusty here. Let’s talk about what’s cooking for Margaret River Mouth.

Right now, it’s pretty ugly out there. We’ve got a solid 10 ft SW groundswell rolling in with a 16-second period and massive energy (4242), but the 19 mph SSW cross-on wind has it all messed up – lumpy and rough. That’s a no-go for paddle surfing; it’s more of a kite session if anything.

Tuesday afternoon stays poor – still 8 ft from the SW with 16 mph cross-onshore wind, just choppy and messy.

Wednesday the 12th sees the swell drop to 7 ft SW, but the wind is still cross-onshore at 9 mph. It’s ‘marginal’ – honestly, still pretty average.

Thursday the 13th is a tease. Same 7 ft SW swell, but the wind drops to just 3 mph in the morning. It’s still cross-onshore, but it’s light enough that you might find a cleaner one if you’re patient. Wave energy remains high (2326) so there’s push, but the river mouth setup gets tricky with this long-period groundswell (16s). It won’t be a complete washout, but it’s not the day to call in sick for.

Friday the 14th is where we finally get a standout. The morning sees 6 ft SW swell with a clean, cross-offshore north wind at 9 mph. That’s a huge positive – clean faces and moderate energy (1494). It’s the best of the run, even though the score is modest on paper. It’s a Thursday morning session worth chasing.

Saturday the 15th drops off hard – 5 ft SW in the morning, then rain and messy cross-shore wind in the arvo. Not your day.

Sunday the 16th has another clean run with 6 ft WSW swell and 16 mph cross-offshore wind. It’s rideable but not epic.

Now, a big heads up: Monday the 17th gets smashed by a 25 mph onshore gale and 6 ft SW swell. That’s blown-out, dangerous, and not for anyone.

The only other potential highlight is Wednesday the 19th morning – 10 ft from the west, 13-second period, and a strong 25 mph cross-offshore wind. The energy is huge (2917), but that wind speed makes it a wild, expert-only day. Very clean though, if you’re brave.

After that, it’s pretty much all cross-on wind and poor conditions right through to the 26th. The long-period SW swells keep coming, but the wind never lets up. This is a frustrating stretch.

Honestly, if you’re after the best of it, your window is Friday the 14th morning – that clean cross-offshore with 6 ft SW swell is the one to paddle for. Everything else is a battle.

Water temp is about average for the time of year, no surprises there.

Rusty.

Short Range Forecast

Light rain (total 3mm), mostly falling on Mon night. Very mild (max 15°C on Tue night, min 10°C on Mon night). Winds decreasing (strong winds from the SSW on Mon night, calm by Wed night).

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Sat afternoon. Warm (max 20°C on Sun afternoon, min 11°C on Fri morning). Wind will be generally light.

Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
2
2
2
3
4
4
3
3
3
2
1
0
1
1
2
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3
SW
16
3
SW
16
2.5
SW
16
2.3
SW
15
2.1
SW
15
2.1
SW
15
2
SW
15
2.1
SW
16
2.1
SW
17
2
SW
16
1.8
SW
16
1.7
SW
15
1.5
SW
14
1.4
SW
14
1.3
WSW
13
1.3
WSW
13
1.7
WSW
15
1.7
WSW
14
1.7
WSW
18
Wave Graph
Metric surfscale
Energy kJ
4915
4242
3589
2390
1914
1776
1715
2326
2531
1943
1494
1246
915
811
599
624
1145
1114
1795
Wind (km/h)
40
SSW
30
SSW
25
SW
20
SW
15
WSW
15
SW
5
SW
5
NNW
10
WSW
10
ESE
15
NNE
5
NNW
10
NE
20
NNE
20
N
15
NE
25
NNE
20
NNE
20
NNW
Wind State
cross
cross-on
cross-on
cross-on
cross-on
cross-on
glassy
cross-on
cross-on
off
cross-off
cross-on
cross-off
cross-off
cross
cross-off
cross-off
cross-off
cross-on
High Tide
8:45AM0.85m
9:30AM0.82m
10:11AM0.75m
10:46AM0.66m
1:06AM0.35m
11:06AM0.55m
00:32AM0.41m
10:38AM0.45m
00:15AM0.48m
Low Tide
5:49PM-0.03m
6:25PM0.04m
6:52PM0.13m
6:59PM0.23m
3:24AM0.34m
6:15PM0.31m
4:52AM0.36m
5:02PM0.33m
light rain
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
rain showers
rain showers
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:03
7:03
7:01
7:01
7:00
6:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:45
5:45
5:46
5:47
5:49
5:49
5:50
 mm
3
2
1
Temp °C
12
14
14
15
14
14
14
13
14
14
15
16
15
17
18
17
18
20
18
Feels °C
4
7
8
10
11
11
12
12
12
12
12
13
14
13
14
15
13
16
15
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  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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