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Southside Surf Forecast
/ WA – Margaret River (57 breaks) / Western Australia (159 breaks) /
Surf Forecasts:
Southside surfForecast / WA – Margaret River / Australia
48hr Weather and Surf, issued 1 am Monday 18 May 2026 AWSTForecast update in hr min s Forecast update imminent
Southside surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Southside sea temperature is
21.1° C
(Which is 1.0°C warmer than normal for this time of year)How big are the waves at Southside today?
The current surf forecast for Southside at 7AM is: 1.8m 11s primary swell from a Southwest direction and 1.3m 11s secondary swell from a South-southwest direction (forecast issued at 01:00am May 18). The wind direction is predicted to be glassy and the swell rating is 4.
| Time (AWST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 5ft (1.6m) | 12s |
| Afternoon (18 May) | 7ft (2.2m) | 11s |
| Evening (18 May) | 7ft (2.2m) | 11s |
Table - waves today at Southside. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 20°C on Wed morning, min 14°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | ||||||||||||||||||||||
2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
SW 12 | SW 11 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | WSW 14 | SW 13 | SW 14 | SW 14 | |
1111 | 1017 | 710 | 1130 | 1130 | 1151 | 1242 | 1226 | 1305 | 1273 | 1479 | 1634 | 1488 | 2541 | 2541 | 2541 | 2423 | 2233 | 2125 | 2066 | 1805 | 1736 | 2130 | 2310 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross-off | glassy | glassy | cross | cross | cross-off | cross-off | off | off | off | cross | cross-on | cross | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross-on | on | glassy | glassy | |
High Tide | 9:59AM0.87m | 10:35AM0.86m | 11:10AM0.81m | |||||||||||||||||||||
Low Tide | 8:46PM-0.04m | 10:10PM-0.04m | ||||||||||||||||||||||
 |  |  | |  |  | | | | | | | | | | | | | | | | | | | |
 | — | 7:05 | — | — | — | — | — | — | — | 7:07 | — | — | — | — | — | — | — | 7:07 | — | — | — | — | — | — |
 | — | — | — | — | — | 5:24 | — | — | — | — | — | — | — | 5:24 | — | — | — | — | — | — | — | 5:23 | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 17 | 16 | 17 | 17 | 18 | 17 | 17 | 16 | 15 | 14 | 14 | 17 | 17 | 18 | 17 | 17 | 18 | 19 | 19 | 20 | 20 | 19 | 19 | 18 |
15 | 15 | 17 | 17 | 16 | 15 | 16 | 15 | 14 | 12 | 12 | 16 | 15 | 17 | 16 | 15 | 16 | 16 | 17 | 18 | 19 | 18 | 19 | 19 | |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 11 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | WSW 15 | WSW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | WSW 14 | SW 13 | SW 14 | SW 14 |
 kJ | 1111 | 1017 | 710 | 1130 | 1130 | 1151 | 1242 | 1226 | 1035 | 964 | 831 | 1634 | 1488 | 2541 | 2541 | 2541 | 2423 | 2233 | 2125 | 2066 | 1805 | 1736 | 2130 | 2310 |
Swell 2 Height (m) Direction Period (s) | SSW 11 | SSW 11 | SSW 11 | WSW 18 | WSW 18 | WSW 17 | WSW 17 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | SW 11 | SW 11 | S 11 | S 11 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | WSW 16 | S 9 | S 9 |
| kJ | 161 | 158 | 515 | 651 | 659 | 921 | 996 | 1136 | 1305 | 1273 | 1479 | 659 | 595 | 9 | 9 | 8 | 2 | 8 | 8 | 7 | 2 | 208 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | WSW 19 | WSW 19 | WSW 18 | — | — | S 14 | S 13 | S 12 | S 12 | S 12 | S 12 | S 11 | S 11 | — | — | — | — | — | — | — | S 10 | S 10 | — | — |
| kJ | 332 | 398 | 596 | — | — | 15 | 14 | 75 | 47 | 45 | 41 | 39 | 38 | — | — | — | — | — | — | — | 7 | 2 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 14 | 0 | 0 | 0 | 14 | 14 | 0 | 0 | 0 | 0 | 0 | 0 | 19 | 0 | 0 | 0 | 31 | 41 | 41 | 183 | 14 | 14 | 0 | 0 |
Best forecast wave conditions in Margaret River | ||||||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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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 Southside 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.
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