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Cathedral Rock Surf Forecast
/ WA – Rottnest Island (6 breaks) / Western Australia (159 breaks) /
Surf Forecasts:
Cathedral Rock surfForecast / WA – Rottnest Island / Australia
48hr Weather and Surf, issued 1 pm Thursday 21 May 2026 AWSTForecast 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) & Date | Wave Height | Wave 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 ForecastMostly 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 | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | SW 13 | SW 13 | SW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | WSW 11 | WSW 11 | |
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) | ||||||||||||||||||||||||
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 | |||||||||||||||||||||
 | |  |  | | |  |  | | | | | | | | | | | |  | | | | | |
 | — | — | — | — | — | — | 7:03 | — | — | — | — | — | — | — | 7:03 | — | — | — | — | — | — | — | 7:05 | — |
 | — | — | 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) | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | SW 13 | SW 13 | SW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | WSW 11 | WSW 11 |
 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) | — | — | — | — | WSW 7 | WSW 7 | W 18 | — | SW 7 | — | — | — | — | — | — | — | — | W 18 | SW 18 | — | W 22 | WSW 16 | SW 16 | SW 16 |
| kJ | — | — | — | — | 113 | 159 | 6 | — | 115 | — | — | — | — | — | — | — | — | 6 | 12 | — | 9 | 26 | 66 | 66 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 20 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 15 |
Wind waves Height (m) Direction Period (s) | — | — | SW 5 | SW 6 | S 5 | SSE 5 | SW 7 | — | — | SW 7 | — | — | — | ESE 3 | E 2 | — | — | — | — | — | SE 2 | — | ENE 2 | NE 3 |
| kJ | — | — | 102 | 206 | 71 | 37 | 179 | — | — | 115 | — | — | — | 1 | 1 | — | — | — | — | — | 1 | — | 1 | 3 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
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 | ||||||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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