Margaret River - South Side Surf Break

Lat Long: 33.98° S 114.98° E

Margaret River - South Side Surf Forecast and Surf Report

Issued: 1 pm 18 Aug 2026 (local time)

Forecast update in  hr  min

Today's Margaret River - South Side sea temperature is
19.3° C
2.0° 

Margaret River - South Side surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Margaret River - South Side surf forecast from 18 Aug 2026:

  • Best quality surf: Wednesday 19 Aug, 2PM (local time) - 16ft (5.0m), 15s period, WSW swell with cross-onshore winds.
  • Most powerful swell: Wednesday 19 Aug, 5PM (local time) - 16ft (5.0m), 16s period, WSW swell with 11,166 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 19 Aug, 2PM (local time) - 16ft (5.0m), 15s period with WSW swell.

Best Forecast Surf Conditions for Margaret River - South Side this week:

The surf forecast for Margaret River - South Side over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 19) at 2PM. The primary swell is predicted to be 5.0m and 15s period. The wind is predicted to be cross-onshore as the swell arrives.

The most powerful waves expected at Margaret River - South Side in the next 16 days are 5.0m 16s and forecast to arrive on Wednesday (Aug 19) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+) 2PM (Wed 19th Aug)16ft (5.0m) 15s
Best Surf 2PM (Wed 19th Aug)16ft (5.0m) 15s
Most Powerful 5PM (Wed 19th Aug)16ft (5.0m) 16s

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


Short Range Forecast

Light rain (total 3mm), mostly falling on Tue night. Very mild (max 16°C on Tue night, min 13°C on Thu night). Winds decreasing (fresh winds from the WNW on Tue night, calm by Fri morning).

Days 5-7 Weather Summary

Some drizzle, heaviest during Sun morning. Very mild (max 15°C on Fri afternoon, min 11°C on Sun night). Wind will be generally light.

Tue
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
PM
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
!
!
!
!
!
!
!
6
4
3
1
3
3
5
1
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
4.5
WSW
16
4
WSW
15
4.5
WSW
15
5
WSW
16
4.5
WSW
16
4
WSW
16
4
SW
16
4
SW
15
3.5
SW
15
3.5
SW
14
3
SW
14
3
SW
16
2.5
SW
15
2.2
SW
14
3
SW
13
2.5
SW
13
3
WSW
15
2.5
SW
14
2.1
WSW
13
2.5
W
7
Wave Graph
Metric surfscale
Energy kJ
8957
6655
9424
11166
10064
7197
7506
6851
5538
5462
3056
4123
3395
1918
2870
2075
4201
2803
1449
618
Wind (km/h)
25
NW
30
WNW
20
SW
20
WSW
20
W
15
WSW
10
SW
5
S
0
ENE
10
SSW
10
ESE
10
S
15
S
15
SSW
25
S
15
SSW
5
NE
20
NW
25
NW
45
NW
Wind State
cross-on
on
cross-on
cross-on
on
cross-on
cross-on
glassy
glassy
cross-on
cross-off
cross
cross
cross-on
cross
cross
cross-off
cross-on
cross-on
cross-on
High Tide
00:34AM0.58m
1:16AM0.61m
4:00AM0.61m
5:40AM0.64m
6:41AM0.67m
7:27AM0.70m
Low Tide
3:16PM0.22m
3:12PM0.16m
3:26PM0.12m
3:44PM0.10m
4:03PM0.08m
4:23PM0.07m
4:42PM0.08m
part cloud
rain showers
part cloud
part cloud
cloud
cloud
cloud
clear
part cloud
clear
clear
part cloud
cloud
part cloud
light rain
part cloud
part cloud
part cloud
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:54
6:54
6:52
6:52
6:50
6:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:51
5:52
5:52
5:52
5:53
5:54
5:55
 mm
3
1
6
Temp °C
15
16
16
15
15
15
15
15
14
15
14
14
15
15
15
14
13
15
16
16
Feels °C
11
9
11
11
10
11
12
12
14
12
11
12
11
12
12
10
11
10
10
10
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • 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 - South Side Surf forecast

The above surf forecast table for Margaret River - South Side 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 - South Side can be found by selecting the local surf guide option on the grey menu. Our Margaret River - South Side 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 - South Side) 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 - South Side 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 - South Side is 93 km (58 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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