Cathedral Rock surfForecast / WA – Rottnest Island / Australia

information circle48hr Weather and Surf, issued 1 pm Thursday 21 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)

How big are the waves at Cathedral Rock today?

The current surf forecast for Cathedral Rock at 9PM is: 1.6m 14s primary swell from a West-southwest direction and 1.6m 6s secondary swell from a Southwest direction (forecast issued at 01:00pm May 21). The wind direction is predicted to be cross-offshore.

Time (AWST) & DateWave HeightWave Period
Morning (21 May)5.5ft (1.7m)14s
Afternoon (21 May)5.5ft (1.7m)14s
Evening (21 May)5ft (1.6m)14s

Table - waves today at Cathedral Rock. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Very mild (max 19°C on Thu afternoon, min 12°C on Sat morning). Winds decreasing (strong winds from the SSW on Thu afternoon, calm by Sat afternoon).

Thu
21
Friday
22
Saturday
23
Sun
24
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
Rating
(10 max)
2
2
0
0
1
1
1
2
2
1
1
1
3
2
1
2
2
2
2
2
1
1
0
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1.7
WSW
14
1.9
WSW
14
1.6
WSW
14
1.6
WSW
14
1.5
WSW
14
1.4
WSW
13
1.4
WSW
13
1.7
WSW
13
1.3
WSW
13
1.3
WSW
13
1.7
SW
13
1.7
SW
13
1.6
SW
12
1.5
WSW
12
1.5
WSW
12
1.4
WSW
12
1.3
WSW
12
1.3
WSW
12
1.3
WSW
12
1.3
WSW
12
1.1
WSW
12
1
WSW
11
0.9
WSW
11
0.9
WSW
11
Wave Graph
Metric surfscale
Energy kJ
1240
1415
1017
961
829
711
700
1030
560
560
966
951
730
616
595
527
491
491
429
429
336
265
190
186
Wind (km/h)
20
SSW
35
SSW
40
SSW
40
SSW
35
S
30
S
25
SSE
30
SSE
30
SSE
30
S
30
S
25
SSE
20
ESE
15
ESE
15
E
15
ENE
5
ENE
0
SE
10
S
15
SSE
20
ESE
20
ENE
20
ENE
20
NE
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
cross-off
cross-off
cross-off
off
off
cross-off
cross-off
cross-off
glassy
cross-off
cross-off
cross-off
cross-off
cross-off
cross
High Tide
11:43AM1.09m
12:13PM0.96m
12:30PM0.82m
Low Tide
11:30PM0.43m
00:14AM0.44m
00:31AM0.46m
clear
clear
cloud
cloud
cloud
cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
cloud
cloud
part cloud
clear
clear
part cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:03
7:03
7:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:25
5:24
5:24
5:23
Temp °C
20
19
18
17
17
17
16
16
16
16
17
18
16
14
13
12
12
13
14
15
14
14
14
13
17
14
11
10
10
10
11
10
9
10
11
11
11
10
9
8
10
12
11
12
10
9
9
8
Swell 1
Height (m)
Direction
Period (s)
1.7
WSW
14
1.9
WSW
14
1.6
WSW
14
1.6
WSW
14
1.5
WSW
14
1.4
WSW
13
1.4
WSW
13
1.7
WSW
13
1.3
WSW
13
1.3
WSW
13
1.7
SW
13
1.7
SW
13
1.6
SW
12
1.5
WSW
12
1.5
WSW
12
1.4
WSW
12
1.3
WSW
12
1.3
WSW
12
1.3
WSW
12
1.3
WSW
12
1.1
WSW
12
1
WSW
11
0.9
WSW
11
0.9
WSW
11
Energy kJ
1240
1415
1017
961
829
711
700
1030
560
560
966
951
730
616
595
527
491
491
429
429
336
265
190
186
Swell 2
Height (m)
Direction
Period (s)
1.1
WSW
7
1.3
WSW
7
0.1
W
18
1.1
SW
7
0.1
W
18
0.1
SW
18
0.1
W
22
0.2
WSW
16
0.4
SW
16
0.4
SW
16
Energy kJ
113
159
6
115
6
12
9
26
66
66
Swell 3
Height (m)
Direction
Period (s)
0.1
SW
20
Energy kJ
15
Wind waves
Height (m)
Direction
Period (s)
1.4
SW
5
1.6
SW
6
1.2
S
5
0.9
SSE
5
1.3
SW
7
1.1
SW
7
0.3
ESE
3
0.3
E
2
0.3
SE
2
0.3
ENE
2
0.4
NE
3
Energy kJ
102
206
71
37
179
115
1
1
1
1
3
Nearest Offshore or Glassy
Rating
(10 max)
2
3
4
3
3
4
3
4
2
2
2
2
3
2
2
2
2
2
2
2
2
2
2
2
Distance (km)
417
503
629
144
144
50
28
64
144
144
144
145
0
0
28
0
0
0
0
0
3
3
1
1
Best forecast wave conditions in Rottnest Island
Rating
(10 max)
3
3
3
2
2
2
2
2
2
2
2
Best forecast wave conditions in Australia
Rating
(10 max)
4
4
4
4
4
4
4
4
4
7
5
5
5
5
5
5
4
4
4
5
5
5
7
5
Header Global
Rating
(10 max)
5
5
5
5
5
5
5
4
5
7
7
7
6
5
7
5
7
7
8
8
7
6
7
5
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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