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Surf Forecasts:

Cathedral Rock surfForecast / WA – Rottnest Island / Australia

information circle48hr Weather and Surf, issued 7 am Wednesday 18 Mar 2026 AWST
Forecast update in hr  min  s Forecast update imminent
Cathedral Rock surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Cathedral Rock sea temperature is
21.6° C
 (Which is slightly cooler than normal)

How big are the waves at Cathedral Rock today?

The current surf forecast for Cathedral Rock at 10AM is: 0.9m 12s primary swell from a Southwest direction and 0.2m 4s secondary swell from a South-southwest direction, 0.2m 2s secondary swell from a North-northeast direction (forecast issued at 07:00am March 18). The wind direction is predicted to be cross-shore.

Time (AWST) & DateWave HeightWave Period
Morning (18 Mar)2.5ft (0.8m)12s
Afternoon (18 Mar)3ft (0.9m)12s
Evening (18 Mar)2.5ft (0.8m)12s

Table - waves today at Cathedral Rock. (Swell directed towards the surf break)

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table
Wednesday
18
Thursday
19
Friday
20
Sat
21
5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM
Rating
(10 max)
0
0
0
0
0
0
1
1
1
0
0
0
1
1
2
2
2
2
1
0
1
2
2
2
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.9
WSW
0.8
WSW
0.9
SW
0.9
WSW
0.9
SW
0.8
WSW
0.8
WSW
0.8
WSW
0.9
SW
0.9
SW
1
SW
0.9
SW
1.1
SW
1.1
SW
1.1
SW
1.1
SW
1.1
SW
1.1
SW
1.1
SW
1.1
SW
1.2
SW
1.1
SW
1.2
SW
1.2
SW
Period(s) (?)131312121212121212121212151514141413131313131414
Wave
Graph
(?)Metric surfscale
Energy kJ (?)257202220255209184180177199192264202496489469456450412451451517458614606
Wind
(km/h)
15
NE
20
NE
10
NNE
20
SW
25
SSW
25
SSE
15
SSE
15
SSE
10
E
20
NE
10
NW
15
W
25
SSW
15
SSE
10
S
10
SSE
10
SSE
10
E
10
NW
20
WSW
20
SSW
15
S
10
SSW
10
SSE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		crosscross-
on		crosscross-
off		cross-
off		offoffcross-
off		cross-
off		oncross-
on		cross-
off		cross-
off		cross-
off		cross-
off		offcross-
off		oncross-
on		cross-
off		cross-
off		cross-
off		off
High Tide
/ height (m)
10:18AM
0.59
9:32PM
0.72
10:19AM
0.63
10:20PM
0.64
10:32AM
0.70
11:09PM
0.57
Low Tide
/ height (m)
4:01AM
0.34
3:09PM
0.45
4:07AM
0.37
4:05PM
0.39
4:05AM
0.41
5:06PM
0.37
Wednesday
18
Thursday
19
Friday
20
Sat
21
Sunrise-6:18-------6:20-------6:20------
Sunset----6:32-------6:30-------6:30---
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
clear
part cloud
clear
clear
part cloud
clear
clear
clear
clear
part cloud
part cloud
Rain (mm)
------------------------
Temp. °C262529302825272627282927242325252626282723222322
Feels °C (?)232127262321242324232625212224242424262421222323
  • 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

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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 Cathedral 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 Cathedral Rock at:
surf-forecast.com

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