Cathedral Rock surfForecast / WA – Rottnest Island / Australia

information circle12 Day Weather and Surf, issued 1 pm Tuesday 23 Dec 2025 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
21.2° C
(Which is normal for this time of year)


Best Forecast Surf Conditions for Cathedral Rock this week:

The surf forecast for Cathedral Rock over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Dec 30) at 11AM. The primary swell is predicted to be 1.1m and 13s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Cathedral Rock in the next 12 days are 2.5m 15s and forecast to arrive on Friday (Dec 26) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 6s period and expected on Sunday (Dec 28) at 5PM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Tue 30th Dec)3.5ft (1.1m) 13s
Best Surf11AM (Tue 30th Dec)3.5ft (1.1m) 13s
Most Powerful 5PM (Fri 26th Dec)8ft (2.5m) 15s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 34°C on Wed afternoon, min 19°C on Fri morning). Winds decreasing (strong winds from the E on Tue night, light winds from the NW by Thu afternoon).

Days 3-6 Weather Summary Mostly dry. Warm (max 23°C on Sun night, min 13°C on Fri night). Winds decreasing (near gales from the SSW on Fri night, moderate winds from the S by Sun morning).

Tue
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
1
0
0
0
1
0
1
0
0
1
0
2
1
0
0
1
0
1
2
Swell
Height Map
Wave Height (m) & direction (?)
1.3
WSW
1.5
SW
1
WSW
0.9
WSW
0.8
WSW
0.9
WSW
0.8
WSW
1.3
WSW
1.8
WSW
2.5
SW
1.9
WSW
2.1
WSW
2.5
SW
2
SW
1.3
SW
1.9
SW
1.8
SW
1.2
SW
2.1
SW
1.6
SW
1.1
SW
Period(s) (?)141313121213181616151011111012681161013
Wave
Graph
(?)Metric surfscale
Energy kJ (?)67276934623318728336087016502794697113415997844400423326316496369
Wind
(km/h)
40
S
45
E
20
E
30
S
30
E
20
NE
25
WSW
20
NW
35
SSW
50
SSW
45
SSE
30
S
50
SSW
35
SE
20
S
50
SSW
35
ESE
25
SSE
45
SSW
40
ESE
15
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
crosscrossoncross-
off
cross-
off
offcross-
off
cross-
off
offcross-
off
cross-
off
offcross-
off
cross-
off
offoff
High Tide
/ height (m)
10:22PM
0.89
10:53PM
0.77
11:23PM
0.64
11:36PM
0.51
4:42PM
0.50
4:55PM
0.61
5:28PM
0.74
Low Tide
/ height (m)
8:10AM
0.22
8:30AM
0.22
8:34AM
0.24
8:07AM
0.28
7:07AM
0.31
3:28AM
0.30
3:24AM
0.24
Tue
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunday
28
Monday
29
Sunrise--5:09--5:09--5:09--5:11--5:11--5:11--5:13
Sunset7:23--7:23--7:24--7:24--7:25--7:25--7:25--
clear
clear
clear
clear
clear
cloud
cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
cloud
clear
clear
clear
Rain (mm)
---------------------
Temp. °C252630343233342419191717182220202321212322
Feels °C (?)1919252927283223161161191416131517141518
  • 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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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 12 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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