Cathedral Rock surfForecast / WA – Rottnest Island / Australia

information circle48hr Weather and Surf, issued 1 am Sunday 31 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
21.5° C
(Which is slightly warmer than usual)

How big are the waves at Cathedral Rock today (31 May):

  • Morning surf: Morning surf (31 May, local time) - 15ft (4.5m), 10s period with W swell.
  • Afternoon surf: Afternoon surf (31 May, local time) - 18ft (5.5m), 12s period with W swell.
  • Evening surf: Evening surf (31 May, local time) - 21ft (6.5m), 14s period with W swell.

The current surf forecast for Cathedral Rock at 10AM is: 4.5m 10s primary swell from a West direction (forecast issued at 01:00am May 31). The wind direction is predicted to be cross-onshore.

Time (AWST) & DateWave HeightWave Period
Morning (31 May)15ft (4.5m)10s
Afternoon (31 May)18ft (5.5m)12s
Evening (31 May)21ft (6.5m)14s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 17mm), heaviest on Sun night. Very mild (max 19°C on Mon afternoon, min 16°C on Sun morning). Winds decreasing (severe gales from the W on Sun night, moderate winds from the SW by Tue night).

Sunday
31
Monday
1
Tuesday
2
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
5 PM
8 PM
11 PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
2
3
1
1
0
0
0
0
0
0
0
0
1
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
3.5
WNW
8
4
WNW
9
4.5
WNW
10
5
W
11
5.5
W
12
6
W
12
6.5
W
13
6.5
W
14
6
WSW
14
5
WSW
14
4.5
WSW
13
4
WSW
13
3.5
WSW
13
3
WSW
13
3
WSW
13
1.8
WSW
13
2.3
WSW
12
2.2
WSW
12
2.3
WSW
11
2.2
WSW
11
2.2
WSW
8
1.8
SW
10
1.9
SW
10
2.1
WSW
13
Wave Graph
Metric surfscale
Energy kJ
1487
2936
3474
5228
7422
10665
13574
16399
13174
9777
7725
6049
4599
3365
2602
1060
1505
1259
1234
1086
570
634
720
1551
Wind (km/h)
65
NW
70
WNW
65
W
75
W
75
W
80
W
80
W
65
WSW
60
SW
55
SW
45
SW
40
SW
30
SW
30
SW
25
SW
25
WSW
30
W
30
W
40
WSW
40
W
40
SW
35
SW
30
SW
30
SW
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross-off
cross-off
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross
High Tide
8:52AM1.19m
9:20AM1.23m
9:46AM1.23m
Low Tide
6:29PM0.52m
7:10PM0.53m
7:52PM0.53m
thunderstorm
rain showers
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
part cloud
cloud
cloud
cloud
cloud
cloud
rain showers
cloud
light rain
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:09
7:09
7:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:22
5:21
5:21
2
2
1
1
1
1
1
3
2
1
1
1
1
3
Temp °C
21
19
17
16
16
17
17
17
18
18
17
17
18
19
18
17
18
18
19
19
18
17
17
17
11
6
4
1
1
1
1
4
6
7
8
9
11
13
13
12
12
12
10
12
10
9
11
11
Swell 1
Height (m)
Direction
Period (s)
0.8
WSW
13
3.5
WSW
13
3
WSW
13
3
WSW
13
1.8
W
11
2.3
WSW
12
0.2
WSW
20
0.3
W
10
1.2
W
8
1.1
W
8
2.1
WSW
13
Energy kJ
222
4599
3365
2602
790
1505
37
18
191
161
1551
Swell 2
Height (m)
Direction
Period (s)
1.8
WSW
13
0.2
WSW
19
0.2
WSW
15
0.4
SW
18
0.4
SW
18
0.3
W
8
Energy kJ
1060
37
21
82
85
12
Swell 3
Height (m)
Direction
Period (s)
0.1
SW
20
Energy kJ
15
Wind waves
Height (m)
Direction
Period (s)
3.5
WNW
8
4
WNW
9
4.5
WNW
10
5
W
11
5.5
W
12
6
W
12
6.5
W
13
6.5
W
14
6
WSW
14
5
WSW
14
4.5
WSW
13
4
WSW
13
2.2
WSW
12
2.3
WSW
11
2.2
WSW
11
2.2
WSW
8
1.8
SW
10
1.9
SW
10
Energy kJ
1487
2936
3474
5228
7422
10665
13574
16399
13174
9777
7725
6049
1259
1234
1086
570
634
720
Nearest Offshore or Glassy
Rating
(10 max)
4
2
2
2
2
2
4
4
4
3
1
2
1
4
4
5
5
4
4
3
3
3
3
5
Distance (km)
318
1650
1650
1650
1775
1650
1908
2019
2175
2175
2465
2459
2465
173
144
355
355
370
370
340
394
340
360
209
Best forecast wave conditions in Rottnest Island
Rating
(10 max)
Best forecast wave conditions in Australia
Rating
(10 max)
4
2
2
2
5
7
6
6
5
5
4
4
4
4
5
5
5
4
4
4
4
4
4
5
Header Global
Rating
(10 max)
8
7
7
7
7
7
6
6
5
5
5
5
5
5
4
4
4
5
5
5
5
7
6
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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