Cathedral Rock surfForecast / WA – Rottnest Island / Australia

information circle16 Day Weather and Surf, issued 1 am Tuesday 24 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
23.0° C
(Which is slightly warmer than usual)

Best Forecast Surf Conditions for Cathedral Rock this week:

The surf forecast for Cathedral Rock over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Mar 25) at 5PM. The primary swell is predicted to be 1.1m and 14s period with a secondary swell of 0.6m and 5s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Cathedral Rock in the next 16 days are 2.3m 10s and forecast to arrive on Tuesday (Mar 31) at 8AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 6s period and expected on Saturday (Mar 28) at 2PM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Wed 25th Mar)3.5ft (1.1m) 14s
Best Surf 5PM (Wed 25th Mar)3.5ft (1.1m) 14s
Most Powerful 8AM (Tue 31st Mar)7.5ft (2.3m) 10s

Table - best surf conditions forecast for Cathedral Rock over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 30°C on Thu afternoon, min 15°C on Wed morning). Winds increasing (moderate winds from the SSE on Tue morning, strong winds from the ESE by Wed night).

Days 3-6 Weather Summary Heavy rain (total 50mm), heaviest during Fri night. Warm (max 21°C on Sun morning, min 16°C on Fri night). Winds decreasing (gales from the ESE on Sat afternoon, moderate winds from the W by Sun night).

Tuesday
24
Wednesday
25
Thursday
26
Friday
27
Saturday
28
Sunday
29
Monday
30
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
1
2
0
0
2
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.9
WSW
0.9
WSW
1.3
SW
0.7
SW
1.1
SW
1.2
SW
1
WSW
0.9
WSW
0.9
WSW
0.7
SW
0.7
WSW
0.6
WSW
0.5
SW
2.2
SSE
1.7
WSW
1.7
WSW
1.7
WSW
0.8
WSW
0.7
WSW
0.8
WSW
1.8
WSW
Period(s) (?)1212111114131313121212111166661111117
Wave
Graph
(?)Metric surfscale
Energy kJ (?)2472393821264375093512902641441238460340188181237160107135303
Wind
(km/h)
20
SSE
45
SSW
40
SE
30
SE
20
SE
45
ESE
35
E
20
ESE
30
E
20
E
40
E
50
ENE
65
ESE
55
SE
35
WSW
35
WSW
30
WSW
20
W
20
WSW
15
W
40
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
offoffoffcross-
off
cross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offcross-
on
crosscrosscross-
on
crosscross-
on
cross-
on
High Tide
/ height (m)
12:33PM
1.01
1:27PM
1.02
2:52PM
1.00
4:52PM
0.95
6:24PM
0.89
7:32PM
0.82
10:25AM
0.59
8:24PM
0.73
Low Tide
/ height (m)
1:31AM
0.35
2:13AM
0.33
2:48AM
0.33
3:17AM
0.33
3:37AM
0.35
3:44AM
0.37
1:52PM
0.54
3:35AM
0.39
Tuesday
24
Wednesday
25
Thursday
26
Friday
27
Saturday
28
Sunday
29
Monday
30
Sunrise6:22--6:24--6:24--6:24--6:26--6:26--6:26--
Sunset-6:24--6:23--6:22--6:21--6:20--6:17--6:16-
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
light rain
light rain
heavy rain
mod rain
heavy rain
light rain
part cloud
part cloud
rain showers
rain showers
rain showers
rain showers
Rain (mm)
---------43186134--2112
Temp. °C192023212826223029201919181820212121212020
Feels °C (?)1612171625201626231512118815151618191818
  • 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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Quick surf report for Cathedral Rock:

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Information about the Cathedral Rock Surf forecast

The above surf forecast table for Cathedral Rock provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cathedral Rock can be found by selecting the local surf guide option on the grey menu. Our Cathedral 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 (Cathedral 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 Cathedral 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.

Cathedral Rock is 31 km (19 miles) from the very large city of Fremantle. If you plan a holiday in Rottnest Island, look for hotels and other accommodation in Fremantle. Fremantle has rooms for a wide range of budgets as well as cheap car hire and transport links.

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