Cathedral Rock surfForecast / WA – Rottnest Island / Australia

information circle48hr Weather and Surf, issued 7 pm Sunday 17 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
21.9° 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 12AM is: 1.3m 11s primary swell from a West-southwest direction and 0.4m 20s secondary swell from a West-southwest direction (forecast issued at 07:00pm May 17). The wind direction is predicted to be cross-offshore and the swell rating is 2.

Time (AWST) & DateWave HeightWave Period
Morning (18 May)--
Afternoon (18 May)4.5ft (1.3m)11s
Evening (18 May)4.5ft (1.3m)11s

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. Warm (max 22°C on Tue afternoon, min 17°C on Mon morning). Wind will be generally light.

Sun
17
Monday
18
Tuesday
19
Wed
20
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
11 AM
2 PM
Rating
(10 max)
1
2
2
2
2
2
2
2
2
2
3
3
3
1
1
3
3
3
1
0
0
0
0
2
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)
1.3
WSW
11
1.3
WSW
11
1.3
WSW
11
1.3
WSW
11
1.3
WSW
11
1.2
WSW
11
1.2
WSW
11
1.2
WSW
11
1.2
SW
11
0.8
WSW
18
1.4
SW
11
0.9
WSW
16
1
WSW
16
1.1
WSW
16
1.2
WSW
16
1.2
WSW
16
1.2
WSW
15
1.3
WSW
15
1.3
WSW
15
1.6
WSW
15
1.5
WSW
14
1.5
WSW
14
1.5
WSW
14
1.5
WSW
14
Wave Graph
Metric surfscale
Energy kJ
400
393
393
386
379
329
323
326
347
396
439
475
547
575
671
662
604
706
669
1091
956
956
956
943
Wind (km/h)
15
SW
10
SSW
10
S
5
SE
5
E
10
NE
10
ENE
10
S
20
S
25
S
20
SE
15
SE
10
ENE
20
NE
15
NE
5
SW
10
SSW
15
ESE
20
NNE
25
NNE
25
N
20
N
20
NNE
10
NW
cross
cross-off
cross-off
off
glassy
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
cross-off
cross
cross
glassy
cross-off
cross-off
cross
cross-on
cross-on
cross-on
cross-on
on
High Tide
9:53AM1.25m
10:31AM1.25m
11:08AM1.19m
Low Tide
6:40PM0.44m
7:56PM0.44m
9:14PM0.44m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:01
7:01
7:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:28
5:27
5:27
5:25
Temp °C
19
19
19
19
18
17
17
18
18
18
18
17
17
17
18
21
22
21
20
20
19
19
19
20
17
18
18
19
18
16
17
18
16
15
15
15
16
14
15
20
19
18
15
14
14
15
15
18
Swell 1
Height (m)
Direction
Period (s)
1.3
WSW
11
1.3
WSW
11
1.3
WSW
11
1.3
WSW
11
1.3
WSW
11
1.2
WSW
11
1.2
WSW
11
1.2
WSW
11
1.2
SW
11
1.3
WSW
11
1.4
SW
11
1.3
WSW
11
1.3
WSW
11
1.3
WSW
11
1.3
WSW
11
1.1
WSW
11
1.2
WSW
15
1.3
WSW
15
1.3
WSW
15
1.6
WSW
15
1.5
WSW
14
1.5
WSW
14
1.5
WSW
14
1.5
WSW
14
Energy kJ
400
393
393
386
379
329
323
323
347
396
439
411
386
379
379
302
604
706
669
1091
956
956
956
943
Swell 2
Height (m)
Direction
Period (s)
0.2
WSW
21
0.2
WSW
21
0.4
WSW
20
0.4
WSW
20
0.4
WSW
20
0.5
W
19
0.6
WSW
18
0.7
WSW
18
0.7
WSW
18
0.8
WSW
18
0.9
WSW
17
0.9
WSW
16
1
WSW
16
1.1
WSW
16
1.2
WSW
16
1.2
WSW
16
1
WSW
11
0.9
WSW
10
0.9
WSW
11
0.3
NNW
3
Energy kJ
45
44
127
127
127
188
249
326
326
348
409
475
547
575
671
662
247
173
180
2
Swell 3
Height (m)
Direction
Period (s)
Energy kJ
Wind waves
Height (m)
Direction
Period (s)
0.4
NNE
3
0.4
N
3
0.4
N
3
Energy kJ
3
3
3
Nearest Offshore or Glassy
Rating
(10 max)
2
2
2
2
2
2
2
2
2
2
3
3
3
3
4
3
3
3
3
4
3
3
3
3
Distance (km)
144
0
0
0
0
0
0
0
144
144
0
0
0
1
1
0
0
0
1
7
7
7
7
7
Best forecast wave conditions in Rottnest Island
Rating
(10 max)
2
3
3
3
3
3
3
3
3
3
3
4
3
3
3
3
4
3
3
3
3
Best forecast wave conditions in Australia
Rating
(10 max)
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
Header Global
Rating
(10 max)
7
4
8
6
4
4
5
6
5
4
5
4
5
4
4
4
4
4
4
4
4
4
4
4
  • 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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