Cathedral Rock surfForecast / WA – Rottnest Island / Australia

information circle16 Day Weather and Surf, issued 7 am Tuesday 14 Apr 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)

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 Thursday (Apr 16) at 5AM. The primary swell is predicted to be 1.3m and 14s period with a secondary swell of 0.9m and 6s. 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 3.0m 12s and forecast to arrive on Tuesday (Apr 21) at 5AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Wednesday (Apr 15) at 8PM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Thu 16th Apr)4.5ft (1.3m) 14s
Best Surf 8AM (Sun 19th Apr)6ft (1.8m) 14s
Most Powerful 5AM (Tue 21st Apr)10ft (3.0m) 12s

Table - best surf conditions forecast for Cathedral Rock over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Light rain (total 3mm), mostly falling on Tue afternoon. Warm (max 23°C on Tue afternoon, min 17°C on Wed night). Winds increasing (light winds from the SE on Tue morning, fresh winds from the SSW by Wed afternoon).

Days 3-6 Weather Summary Some drizzle, heaviest during Fri night. Warm (max 20°C on Fri afternoon, min 16°C on Sat night). Winds decreasing (fresh winds from the W on Fri night, light winds from the S by Sun morning).

Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
Sunday
19
Monday
20
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
2
1
2
1
0
2
2
1
1
0
0
0
3
2
3
3
2
1
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.7
WSW
1.1
WSW
1.7
WSW
1.6
WSW
1.4
WSW
1.1
WSW
1.6
WSW
1.5
WSW
1.3
WSW
1.4
WSW
1.1
WSW
1.4
W
1.8
WSW
1.8
WSW
1.7
WSW
1.8
WSW
1.7
WSW
1.6
WSW
1.4
WSW
1.1
WSW
2.5
WSW
Period(s) (?)16151414131314131312126101011141313131310
Wave
Graph
(?)Metric surfscale
Energy kJ (?)2535391068928722421982756587545324144676703685129910748126594021324
Wind
(km/h)
10
SE
25
S
25
SSE
30
S
40
SSW
25
SSE
20
SSE
25
SSW
20
SSW
20
WSW
25
W
25
SSW
20
SSE
20
S
20
SSE
10
S
20
SSW
10
W
35
NW
45
WSW
30
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
cross-
off
cross-
off
cross-
on
cross-
on
cross-
off
offcross-
off
offcross-
off
cross-
off
cross-
on
oncrosscross
High Tide
/ height (m)
9:15AM
0.66
7:45PM
0.75
8:54AM
0.70
8:52PM
0.70
9:00AM
0.78
9:59PM
0.66
9:19AM
0.87
11:18PM
0.62
9:44AM
0.97
10:14AM
1.06
10:47AM
1.12
Low Tide
/ height (m)
1:46PM
0.57
2:30AM
0.45
2:44PM
0.49
2:37AM
0.49
3:41PM
0.43
2:37AM
0.54
4:43PM
0.41
2:25AM
0.59
5:56PM
0.41
7:28PM
0.43
9:23PM
0.43
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
Sunday
19
Monday
20
Sunrise6:37--6:37--6:39--6:39--6:39--6:41--6:41--
Sunset-5:59--5:57--5:55--5:54--5:53--5:52--5:52-
clear
rain showers
rain showers
part cloud
part cloud
clear
clear
clear
clear
part cloud
clear
rain showers
part cloud
clear
clear
clear
clear
clear
clear
rain showers
cloud
Rain (mm)
-21--------1-------1-
Temp. °C212321192021182020192020181717161718202118
Feels °C (?)202018141416161716171615141414141315141312
  • 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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Quick surf report for Cathedral Rock:

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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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