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Surf Forecasts:

Big Rock surfForecast / WA – Margaret River / Australia

information circle12 Day Weather and Surf, issued 1 pm Sunday 23 Nov 2025 AWST
Forecast update in hr  min  s Forecast update imminent
Big Rock surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Big Rock sea temperature is
19.2° C
 (Which is slightly warmer than usual)

Best Forecast Surf Conditions for Big Rock this week:

The surf forecast for Big Rock over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Nov 28) at 2AM. The primary swell is predicted to be 2.5m and 15s period with a secondary swell of 0.4m and 8s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Big Rock in the next 12 days are 4.5m 11s and forecast to arrive on Sunday (Nov 23) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Sunday (Nov 30) at 8PM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Fri 28th Nov)8ft (2.5m) 15s
Best Surf 2AM (Fri 28th Nov)8ft (2.5m) 15s
Most Powerful 8PM (Sun 23rd Nov)15ft (4.5m) 11s

Table - best surf conditions forecast for Big Rock over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Light rain (total 9mm), mostly falling on Sun afternoon. Very mild (max 17°C on Mon afternoon, min 15°C on Sun afternoon). Winds decreasing (strong winds from the WSW on Sun afternoon, light winds from the W by Tue night).

Days 3-6 Weather Summary Mostly dry. Very mild (max 17°C on Wed afternoon, min 13°C on Thu night). Mainly fresh winds.

Sun
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
0
0
0
1
0
0
0
0
0
1
5
2
0
2
0
0
1
3
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
4.5
WSW
4.5
SW
3.5
SW
2.5
WSW
2.4
WSW
2.5
SW
2.3
SW
1.5
WSW
2.1
SW
2.1
SW
2.5
SW
2.5
SW
2
WSW
2.5
WSW
2.3
WSW
2.2
WSW
1.8
WSW
1.5
WSW
1.3
WSW
2.3
SW
3
SW
Period(s) (?)1111101012111010981110151514141313131214
Wave
Graph
(?)Metric surfscale
Energy kJ (?)4779431122621333155314021069439654555171812831735300021181997112773459615504158
Wind
(km/h)
45
WSW
40
SW
25
SW
25
SW
30
WSW
30
SW
20
SW
20
W
30
SW
30
SW
25
SW
25
SW
30
SSW
15
SE
15
W
20
SSW
15
SSW
20
SW
30
SSW
25
S
20
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		oncross-
on		cross-
on		cross-
on		cross-
on		crosscross-
off		oncross-
on		crosscross-
on		crosscrosscross
High Tide
/ height (m)
10:02PM
0.95
10:31PM
0.92
11:00PM
0.87
11:24PM
0.78
11:03PM
0.67
8:32PM
0.60
7:38PM
0.61
7:42AM
0.47
Low Tide
/ height (m)
8:29AM
0.21
9:24AM
0.23
10:18AM
0.25
11:06AM
0.27
11:45AM
0.31
12:13PM
0.35
2:39AM
0.40
12:26PM
0.40
Sun
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunrise--5:03--5:03--5:03--5:03--5:01--5:01--5:01
Sunset7:07--7:08--7:09--7:09--7:10--7:12--7:13--
light rain
light rain
cloud
part cloud
part cloud
part cloud
part cloud
rain showers
rain showers
clear
part cloud
part cloud
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
Rain (mm)
33-----12------------
Temp. °C161516171617171716171617171617171617181617
Feels °C (?)6610111111131411111012121114141214141113
  • 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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Quiksilver Teams Up With PrimaLoft® For World’s First Thermal Layering System for a Wetsuit.

Feel that? If you are in the northern hemisphere, you will have had that first bite of winter. The lick of a frost, the chill of a cold offshore breeze and the sound of winter swells pounding the shores. If you are near the mountains, your favourite jackets, gloves, and footwear might get dusted off and prepped for battle. And in that beautiful Venn diagram, you will find PrimaLoft. They have spent over 40 years developing innovative insulations that have powered your warmest winter gear. In t

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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 Big Rock 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.

View detailed surf forecast for Big Rock at:
surf-forecast.com

Information about the Big Rock Surf forecast

The above surf forecast table for Big Rock provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Big Rock can be found by selecting the local surf guide option on the grey menu. Our Big Rock 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 (Big Rock) 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 Big Rock 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.

Big Rock is 85 km (53 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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