Cathedral Rock surfForecast / WA – Rottnest Island / Australia

information circle16 Day Weather and Surf, issued 1 pm Monday 04 May 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
21.7° 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 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (May 04) at 11PM. The primary swell is predicted to be 0.9m and 12s period with a secondary swell of 0.6m and 18s. 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 1.3m 16s and forecast to arrive on Wednesday (May 06) 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 0.9m 4s period and expected on Friday (May 08) at 5AM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Mon 4th May)3ft (0.9m) 12s
Best Surf 2PM (Tue 5th May)2.5ft (0.8m) 16s
Most Powerful 5PM (Wed 6th May)4.5ft (1.3m) 16s

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 21°C on Wed afternoon, min 15°C on Wed morning). Winds increasing (light winds from the SSW on Mon afternoon, fresh winds from the E by Wed night).

Days 5-7 Weather Summary

Mostly dry. Warm (max 23°C on Fri afternoon, min 15°C on Sat morning). Mainly strong winds.

Mon
4
Tuesday
5
Wednesday
6
Thursday
7
Friday
8
Saturday
9
Sunday
10
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
0
1
2
1
2
1
2
1
0
0
0
0
0
0
0
0
0
0
1
0
0
Swell
Height Map
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
Wave
Height (m)
Direction
Period (s)
0.9
WSW
13
0.7
WSW
18
0.8
WSW
16
0.8
WSW
15
0.9
WSW
18
1
WSW
17
1.3
WSW
16
1.3
WSW
16
1.1
WSW
14
1
WSW
14
0.9
WSW
13
0.7
SW
13
0.6
WSW
12
0.5
SW
12
0.4
WSW
12
0.4
SW
12
0.4
WSW
13
0.4
SW
12
0.5
WSW
14
0.7
WSW
14
1.1
W
13
Wave Graph
Metric surfscale
Energy kJ
286
318
341
304
454
543
915
768
515
425
273
172
104
69
56
43
69
45
120
213
440
Wind (km/h)
25
S
20
E
10
ENE
25
S
25
E
25
E
20
SSE
35
E
30
ENE
25
E
40
ENE
35
ENE
25
ENE
40
ENE
30
NE
15
E
35
NE
30
NE
5
S
30
NE
30
NNE
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross-off
cross
cross-off
cross
cross-on
High Tide
10:38AM1.15m
11:01AM1.14m
11:26AM1.09m
11:57AM1.03m
12:39PM0.94m
1:47PM0.83m
10:01AM0.71m
Low Tide
8:31PM0.53m
9:50PM0.54m
10:52PM0.52m
11:32PM0.50m
11:57PM0.48m
00:13AM0.47m
00:25AM0.47m
11:38AM0.71m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:52
6:52
6:52
6:54
6:54
6:54
6:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:37
5:37
5:36
5:35
5:34
5:34
5:32
5:31
Temp °C
18
18
17
19
19
17
21
20
17
22
21
18
23
21
17
23
21
18
21
22
20
13
13
15
15
13
12
16
13
11
16
15
11
17
14
10
18
14
12
18
17
14
Swell 1
Height (m)
Direction
Period (s)
0.9
WSW
13
0.9
SW
12
0.8
WSW
16
0.8
WSW
15
0.9
WSW
18
1
WSW
17
1.3
WSW
16
1.3
WSW
16
1.1
WSW
14
1
WSW
14
0.9
WSW
13
0.7
SW
13
0.6
WSW
12
0.5
SW
12
0.4
WSW
12
0.4
SW
12
0.4
WSW
13
0.4
SW
12
0.5
WSW
14
0.7
WSW
14
1.1
W
13
Energy kJ
286
260
341
304
454
543
915
768
515
425
273
172
104
69
56
37
69
39
120
213
440
Swell 2
Height (m)
Direction
Period (s)
0.4
WSW
19
0.7
WSW
18
0.7
SW
12
0.6
SW
11
0.8
WSW
14
0.8
WSW
13
0.1
W
18
0.1
W
17
0.4
NW
6
0.2
WSW
11
0.3
WSW
15
0.4
NNW
6
0.4
NW
6
Energy kJ
117
318
137
99
276
222
6
5
9
12
45
13
9
Swell 3
Height (m)
Direction
Period (s)
0.3
WSW
21
0.6
WSW
20
0.4
WSW
10
0.1
N
5
0.3
WSW
15
0.1
NW
6
0.1
W
18
Energy kJ
88
298
37
1
43
2
6
Wind waves
Height (m)
Direction
Period (s)
0.3
SSW
2
0.3
ESE
2
0.4
ESE
3
0.5
E
3
0.7
E
3
0.5
ENE
3
0.8
ENE
4
0.7
NE
4
0.3
ENE
3
0.8
NE
4
0.9
NNE
4
0.6
NE
3
0.8
NNE
4
0.5
NE
3
1
N
5
Energy kJ
1
1
2
6
11
7
18
15
2
20
25
6
19
5
46
Nearest Offshore or Glassy
Rating
(10 max)
2
2
2
2
3
3
3
3
3
2
2
3
1
2
1
1
1
2
1
2
3
Distance (km)
173
28
0
173
28
28
28
28
34
3
74
214
28
214
35
28
35
253
0
35
318
Best forecast wave conditions in Rottnest Island
Rating
(10 max)
3
2
1
Best forecast wave conditions in Australia
Rating
(10 max)
4
4
4
4
4
4
5
4
4
4
5
4
2
7
5
5
4
4
2
4
4
Header Global
Rating
(10 max)
5
5
5
5
5
5
5
6
5
5
8
6
6
7
5
5
4
4
4
5
8
  • Map Icons:
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  • 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 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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