Cathedral Rock surfForecast / WA – Rottnest Island / Australia

information circle12 Day Weather and Surf, issued 1 am Monday 29 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
21.7° 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 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 1.2m 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 2.2m 14s and forecast to arrive on Friday (Jan 02) 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 2.1m 6s period and expected on Monday (Dec 29) at 5PM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Tue 30th Dec)4ft (1.2m) 13s
Best Surf 2AM (Sat 3rd Jan)6.5ft (2.0m) 8s
Most Powerful 5PM (Fri 2nd Jan)7ft (2.2m) 14s

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 28°C on Wed afternoon, min 16°C on Mon morning). Winds decreasing (strong winds from the SSW on Mon afternoon, light winds from the ESE by Wed morning).

Days 3-6 Weather Summary Mostly dry. Warm (max 28°C on Thu morning, min 19°C on Thu night). Winds increasing (light winds from the SSW on Thu morning, strong winds from the SSW by Fri night).

Monday
29
Tuesday
30
Wednesday
31
Thursday
01
Friday
02
Saturday
03
Sunday
04
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
2
0
0
1
0
1
2
1
0
1
1
3
0
0
1
0
0
1
Swell
Height Map
Wave Height (m) & direction (?)
1.4
SW
0.5
WSW
1.6
SW
1.2
SW
1.5
SSW
0.7
SW
0.9
SW
0.7
SW
0.7
WSW
0.6
WSW
0.8
WSW
1.2
WSW
1.2
WSW
2.2
SW
2
SW
1
WSW
1.8
SW
1.5
SW
0.9
WSW
0.9
WSW
2
SW
Period(s) (?)10158131212111111191716141481312712127
Wave
Graph
(?)Metric surfscale
Energy kJ (?)4241283384736581441821211012483816495531902477341899218211231412
Wind
(km/h)
30
S
50
SSW
40
ESE
10
ESE
40
SSW
35
E
10
ESE
35
S
20
SSE
10
SSW
25
SSW
40
S
30
S
40
SSW
25
SE
15
SW
40
SSW
15
ESE
5
W
30
SSW
20
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
cross-
off
offcross-
off
cross-
off
offcross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offcrosscross-
off
cross-
off
cross-
on
cross-
off
cross-
off
High Tide
/ height (m)
5:28PM
0.74
6:10PM
0.88
6:55PM
1.00
7:42PM
1.10
8:27PM
1.13
9:09PM
1.10
9:45PM
1.01
Low Tide
/ height (m)
3:24AM
0.24
3:59AM
0.20
4:41AM
0.19
5:25AM
0.19
6:07AM
0.19
6:47AM
0.20
Monday
29
Tuesday
30
Wednesday
31
Thursday
01
Friday
02
Saturday
03
Sunday
04
Sunrise5:11--5:13--5:13--5:15--5:15--5:16--5:16--
Sunset-7:25--7:25--7:27--7:27--7:27--7:27--7:28-
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
Rain (mm)
---------------------
Temp. °C202024232125272823282321212225242325282925
Feels °C (?)151216211520242119251819171620221921272423
  • 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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