Cathedral Rock surfForecast / WA – Rottnest Island / Australia

information circle12 Day Weather and Surf, issued 1 am Friday 11 Jul 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
21.0° C
(Which is 1.3°C warmer than 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 Saturday (Jul 12) at 5PM. The primary swell is predicted to be 3.5m and 14s period. The wind is predicted to be cross-shore as the swell arrives.

The most powerful waves expected at Cathedral Rock in the next 12 days are 3.5m 19s and forecast to arrive on Wednesday (Jul 16) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Sunday (Jul 13) at 2AM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Sat 12th Jul)11ft (3.5m) 14s
Best Surf 5AM (Thu 17th Jul)10ft (3.0m) 18s
Most Powerful 8PM (Wed 16th Jul)11ft (3.5m) 19s

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

Updates in  hr  min  s Forecast update imminent
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.4
SW
1.9
WSW
1.9
WSW
3
WSW
3.5
WSW
2.5
WSW
2.2
WSW
2.1
WSW
2.3
WSW
2.4
WSW
2.5
WSW
2.3
WSW
1.9
WSW
1.7
WSW
1.6
WSW
2.4
WSW
2
WSW
3
WSW
2.5
WSW
2.4
WSW
2.4
WSW
3
WSW
2.5
WSW
2.4
WSW
2.1
WSW
1.8
WSW
4
W
4.5
WSW
4
WSW
3.5
WSW
3
WSW
2.5
WSW
2.5
WSW
3
WSW
2.5
WSW
2.4
WSW
Period(s) (?)14171615141413141313131313131316201817161617171616159121314131113141413
Wave
Graph
(?)Metric surfscale
Energy (?)156823462080434341362348175216281783189121131921155514951577378857666482409030803005435840802968213613532552562061114360287716242096334028812181
Wind
(km/h)
40
NNW
40
NW
45
NW
40
WSW
30
SW
20
ESE
20
NE
15
SW
35
SW
30
SSW
20
S
10
ENE
20
N
10
WNW
20
NW
35
W
40
SW
25
S
5
NW
20
WSW
20
W
20
NW
20
NW
25
NNW
45
WNW
50
WSW
55
WSW
35
W
65
NW
70
W
70
W
60
SSW
45
SSW
25
SW
30
W
50
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
ononcross-
on
crosscross-
off
crosscrosscrosscross-
off
cross-
off
cross-
off
cross-
on
ononcross-
on
crosscross-
off
glasscrosscross-
on
ononononcross-
on
cross-
on
cross-
on
oncross-
on
cross-
on
cross-
off
cross-
off
crosscross-
on
cross-
on
High Tide
/ height (m)
9:08AM
1.22
9:47AM
1.14
10:26AM
1.04
11:07AM
0.91
11:47AM
0.78
2:37AM
0.54
12:25PM
0.65
2:51AM
0.61
12:47PM
0.54
3:28AM
0.71
4:20AM
0.83
5:18AM
0.96
6:17AM
1.08
7:12AM
1.16
Low Tide
/ height (m)
6:40PM
0.43
7:12PM
0.39
7:40PM
0.38
8:01PM
0.38
8:06PM
0.41
5:26AM
0.52
7:36PM
0.45
9:51AM
0.53
6:31PM
0.47
3:13PM
0.46
3:12PM
0.40
3:49PM
0.37
4:30PM
0.36
5:10PM
0.37
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Sunrise7:18--7:18--7:16--7:16--7:16--7:16--7:16--7:16--7:15--7:15--7:13--7:13--
Sunset-5:29--5:29--5:30--5:30--5:30--5:30--5:31--5:31--5:32--5:34--5:34--5:35-
clearpart cloudrain showersrain showerslight rainrain showerspart cloudcloudpart cloudclearpart cloudpart cloudpart cloudrain showersrain showersrain showersrain showersrain showerscloudcloudpart cloudlight rainlight rainpart cloudrain showerslight rainlight rainrain showerscloudthunderstorm light rainthunderstorm rain showersrain showersrain showersrain showers
Rain (mm)
--1522-------13111---11-2351-74811213
Temp. °C172020181616131516161615131517171717151617171717171716161617131414141618
Feels °C (?)913121081181287911812131198131313141313868854116698

Short Range Forecast: Moderate rain (total 10mm), heaviest on Sat morning. Warm (max 20°C on Fri afternoon, min 13°C on Sat night). Winds decreasing (strong winds from the WNW on Fri night, light winds from the NNE by Sun afternoon).

Days 3-6 Weather Summary Light rain (total 7mm), mostly falling on Tue afternoon. Very mild (max 17°C on Tue night, min 13°C on Tue morning). Winds increasing (light winds from the WNW on Tue night, strong winds from the SW by Wed afternoon).

Days 6-9 Weather Summary Moderate rain (total 12mm), heaviest on Sat afternoon. Very mild (max 17°C on Thu night, min 14°C on Sat night). Winds increasing (calm on Thu morning, near gales from the WSW by Sat night).

Long Range Forecast: Heavy rain (total 37mm), heaviest during Mon afternoon. Very mild (max 18°C on Tue night, min 12°C on Mon morning). Winds decreasing (gales from the WNW on Sun night, moderate winds from the SW by Tue morning).

  • 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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