Margaret River - South Side Surf Break

Lat Long: 33.98° S 114.98° E

Margaret River - South Side Surf Forecast and Surf Report

Issued: 7 am 18 Aug 2026 (local time)

Forecast update in  hr  min

Today's Margaret River - South Side sea temperature is
19.2° 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: Tuesday 18 Aug, 11AM (local time) - 15ft (4.5m), 16s period, WSW swell with 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★+): Tuesday 18 Aug, 11AM (local time) - 15ft (4.5m), 16s 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 Tuesday (Aug 18) at 11AM. The primary swell is predicted to be 4.5m and 16s period with a secondary swell of 1.1m and 16s. The wind is predicted to be 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+)11AM (Tue 18th Aug)15ft (4.5m) 16s
Best Surf11AM (Tue 18th Aug)15ft (4.5m) 16s
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 4mm), 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 Thu night).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 16°C on Sat night, min 12°C on Fri morning). Wind will be generally light.

Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
AM
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
!
!
!
!
!
!
!
!
6
4
0
1
2
3
5
2
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
4.5
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
2.1
SW
17
3
SW
16
3
SW
15
2.4
SW
14
3
SW
13
2.5
SW
13
2.5
WSW
15
2.4
WSW
14
2.2
WSW
13
2.4
WSW
13
Wave Graph
Metric surfscale
Energy kJ
10312
9072
6655
9424
11166
10064
7197
7288
6573
5358
4823
2886
4529
3595
2356
2870
2008
3371
2313
1693
1939
Wind (km/h)
15
WNW
25
NW
30
WNW
20
SW
20
WSW
20
W
20
WSW
10
WSW
5
S
5
WSW
10
SSW
15
ESE
15
SSW
20
SSW
15
SW
20
SSW
20
SSW
0
SSW
20
N
25
NNW
45
NW
Wind State
on
cross-on
on
cross-on
cross-on
on
cross-on
cross-on
glassy
glassy
cross-on
cross-off
cross
cross-on
cross-on
cross-on
cross
glassy
cross
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
cloud
rain showers
part cloud
part cloud
cloud
part cloud
cloud
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
clear
part cloud
part cloud
cloud
cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:56
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
4
7
Temp °C
15
15
16
16
15
15
15
16
16
14
14
14
15
15
16
15
15
15
14
15
16
Feels °C
10
10
8
11
11
9
11
13
14
13
11
12
13
11
12
10
10
11
10
10
9
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Margaret River - South Side:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Margaret River - South Side surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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.

Nearest locationNearest