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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
16 Day Weather and Surf, issued 7 pm Monday 18 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
21.9° 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 Tuesday (May 19) at 2AM. The primary swell is predicted to be 0.9m and 16s period with a secondary swell of 1.3m and 11s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Cathedral Rock in the next 16 days are 1.9m 14s and forecast to arrive on Thursday (May 21) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Thursday (May 21) at 8PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Tue 19th May) | 3ft (0.9m) 16s |
| Best Surf | 2AM (Tue 19th May) | 3ft (0.9m) 16s |
| Most Powerful | 11AM (Thu 21st May) | 6ft (1.9m) 14s |
Table - best surf conditions forecast for Cathedral Rock over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 22°C on Tue afternoon, min 17°C on Mon night). Winds increasing (calm on Tue afternoon, strong winds from the SSW by Thu afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 21°C on Sun afternoon, min 13°C on Sat morning). Winds decreasing (strong winds from the S on Thu night, calm by Sat afternoon). | ||||||||||||||||||||
Tuesday 19 | Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | Mon 25 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | WSW 11 | WSW 14 | WSW 13 | WSW 16 | WSW 14 | |
475 | 671 | 604 | 970 | 956 | 746 | 904 | 1435 | 1189 | 805 | 862 | 711 | 500 | 399 | 336 | 193 | 103 | 233 | 326 | 662 | 678 | |
Wind (km/h) | |||||||||||||||||||||
cross-off | cross | cross | cross-on | cross-on | cross-off | off | cross-off | cross-off | off | off | off | cross-off | cross | glassy | cross | cross-on | on | cross-on | cross-on | on | |
High Tide | 10:31AM1.25m | 11:08AM1.19m | 11:43AM1.09m | 12:13PM0.96m | 12:30PM0.82m | 10:07AM0.70m | 8:37AM0.67m | ||||||||||||||
Low Tide | 9:14PM0.44m | 10:28PM0.43m | 11:30PM0.43m | 00:14AM0.44m | 00:31AM0.46m | 00:10AM0.49m | |||||||||||||||
 |  | | |  | |  |  | | | | | | | |  | | | | | | |
 | — | 7:01 | — | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — |
 | 5:27 | — | 5:27 | — | — | 5:25 | — | — | 5:25 | — | — | 5:24 | — | — | 5:24 | — | — | 5:23 | — | — | 5:23 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 18 | 17 | 22 | 21 | 19 | 20 | 20 | 19 | 19 | 18 | 15 | 20 | 19 | 15 | 20 | 20 | 18 | 21 | 21 | 19 | 21 |
15 | 15 | 20 | 19 | 16 | 19 | 16 | 15 | 13 | 10 | 10 | 16 | 13 | 8 | 19 | 16 | 12 | 18 | 19 | 11 | 14 | |
Swell 1 Height (m) Direction Period (s) | WSW 11 | WSW 11 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | WSW 11 | WSW 14 | WSW 13 | WSW 16 | WSW 14 |
 kJ | 411 | 379 | 604 | 970 | 956 | 746 | 904 | 1435 | 1189 | 805 | 862 | 711 | 500 | 399 | 336 | 193 | 103 | 233 | 326 | 662 | 678 |
Swell 2 Height (m) Direction Period (s) | WSW 16 | WSW 16 | WSW 11 | — | — | — | — | — | — | SW 7 | — | — | — | — | W 18 | WSW 16 | WSW 15 | NW 6 | WSW 17 | — | — |
| kJ | 475 | 671 | 247 | — | — | — | — | — | — | 100 | — | — | — | — | 6 | 51 | 87 | 25 | 168 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 20 | WSW 11 | NNW 6 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 37 | 66 | 12 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | NNE 3 | NNW 3 | — | — | S 3 | SSW 4 | S 5 | SE 4 | — | E 3 | NE 4 | NNE 3 | NE 3 | N 5 | NNW 6 | — | N 4 | NW 4 |
| kJ | — | — | — | 1 | 3 | — | — | 8 | 31 | 56 | 12 | — | 7 | 15 | 1 | 4 | 46 | 28 | — | 9 | 9 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 1 | 64 | 7 | 1 | 0 | 0 | 144 | 1138 | 64 | 0 | 0 | 28 | 35 | 0 | 35 | 258 | 258 | 7 | 355 | 355 |
Best forecast wave conditions in Rottnest Island | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Cathedral Rock surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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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