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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 am 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
21.8° 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 6AM is: 1.6m 14s primary swell from a West-southwest direction (forecast issued at 01:00am May 21). The wind direction is predicted to be cross-offshore and the swell rating is 3.
| Time (AWST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 5.5ft (1.7m) | 14s |
| Afternoon (21 May) | 6ft (1.9m) | 14s |
| Evening (21 May) | 5ft (1.5m) | 14s |
Table - waves today at Cathedral Rock. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastSome drizzle, heaviest during Thu afternoon. Warm (max 20°C on Thu morning, min 12°C on Sat morning). Winds decreasing (strong winds from the S on Thu night, calm by Sat afternoon). | ||||||||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | ||||||||||||||||||||||
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 | |
Swell Height Map |    |    |    | |||||||||||||||||||||
WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | SW 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 | |
917 | 1047 | 1240 | 1240 | 1415 | 1824 | 961 | 829 | 805 | 700 | 1030 | 560 | 918 | 966 | 864 | 730 | 658 | 595 | 527 | 491 | 491 | 429 | 429 | 336 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | glassy | cross-off | off | cross-off | |
High Tide | 11:43AM1.09m | 12:13PM0.96m | 12:30PM0.82m | |||||||||||||||||||||
Low Tide | 11:30PM0.43m | 00:14AM0.44m | ||||||||||||||||||||||
 |  |  | | |  | | | | |  | | | |  | | | |  | | | | | | |
 | — | 7:03 | — | — | — | — | — | — | — | 7:03 | — | — | — | — | — | — | — | 7:03 | — | — | — | — | — | — |
 | — | — | — | — | — | 5:25 | — | — | — | — | — | — | — | 5:24 | — | — | — | — | — | — | — | 5:24 | — | — |
— | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 21 | 21 | 20 | 20 | 19 | 18 | 17 | 17 | 18 | 16 | 16 | 16 | 16 | 17 | 18 | 16 | 14 | 13 | 12 | 12 | 14 | 15 | 15 | 14 |
21 | 21 | 19 | 17 | 14 | 12 | 9 | 8 | 11 | 10 | 9 | 10 | 10 | 10 | 11 | 11 | 10 | 8 | 8 | 8 | 13 | 11 | 11 | 10 | |
Swell 1 Height (m) Direction Period (s) | WSW 14 | WSW 14 | 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 |
 kJ | 917 | 1047 | 1240 | 1240 | 1415 | — | 961 | 829 | 805 | 700 | 1030 | 560 | 918 | 966 | 864 | 730 | 658 | 595 | 527 | 491 | 491 | 429 | 429 | 336 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | WSW 7 | — | SW 7 | W 18 | — | — | — | — | — | — | — | — | — | W 18 | SW 18 | — | W 22 |
| kJ | — | — | — | — | — | — | — | 180 | — | 165 | 6 | — | — | — | — | — | — | — | — | — | 6 | 12 | — | 9 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | W 18 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SW 4 | SW 14 | SW 6 | S 5 | SW 7 | — | — | SW 7 | — | — | — | — | ESE 3 | E 3 | ENE 3 | ENE 3 | — | — | — | SE 2 |
| kJ | — | — | — | — | 15 | 1824 | 239 | 34 | 218 | — | — | 99 | — | — | — | — | 1 | 2 | 1 | 1 | — | — | — | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 377 | 629 | 629 | 144 | 144 | 144 | 144 | 144 | 144 | 144 | 144 | 28 | 0 | 3 | 28 | 1 | 0 | 0 | 0 | 0 | 3 |
Best forecast wave conditions in Rottnest Island | ||||||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Ocean Swells (m)- Wind Speed (km/h)
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