Surf Forecasts:
How big are the waves at Cathedral Rock today (17 Aug):
- Morning surf: Morning surf (17 Aug, local time) - 6ft (1.9m), 16s period with WSW swell.
- Afternoon surf: Afternoon surf (17 Aug, local time) - 11ft (3.5m), 16s period with W swell.
- Evening surf: Evening surf (17 Aug, local time) - 13ft (4.0m), 12s period with WSW swell.
The current surf forecast for Cathedral Rock at 7AM is: 1.9m 16s primary swell from a West-southwest direction and 0.9m 4s secondary swell from a North-northwest direction (forecast issued at 01:00am August 17). The wind direction is predicted to be cross-onshore.
| Time (AWST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Aug) | 6ft (1.9m) | 16s |
| Afternoon (17 Aug) | 11ft (3.5m) | 16s |
| Evening (17 Aug) | 13ft (4.0m) | 12s |
Table - waves today at Cathedral Rock. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 6mm), mostly falling on Mon afternoon. Very mild (max 18°C on Mon morning, min 15°C on Mon afternoon). Winds decreasing (near gales from the W on Mon afternoon, light winds from the W by Tue morning). | ||||||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | ||||||||||||||||||||||
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 |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | WSW 15 | WSW 16 | WSW 16 | WSW 16 | W 16 | WSW 10 | WSW 12 | WSW 13 | WSW 15 | WSW 15 | W 15 | W 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 16 | WSW 16 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 1833 | 2007 | 1826 | 1807 | 5835 | 3429 | 4577 | 4573 | 6228 | 6322 | 6093 | 6079 | 5898 | 5641 | 4944 | 4247 | 3604 | 3074 | 2664 | 2427 | 2616 | 3241 | 3905 | 4056 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | on | cross-on | cross-on | cross | cross | cross | cross | cross-on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross |
High Tide | 11:55PM0.54m | 10:40AM0.44m | 00:20AM0.61m | 00:56AM0.69m | ||||||||||||||||||||
Low Tide | 5:59AM0.40m | 4:32PM0.32m | 4:15PM0.31m | 4:07PM0.31m | ||||||||||||||||||||
 | |  |  |  |  | | | |  |  | | | | |  | |  | | | | | | | |
 | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:50 | — | — | — | — | — | — |
 | — | — | — | — | — | 5:51 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — |
mm | — | — | — | 1 | 2 | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 | — | — | — | — | — | — |
Temp °C | 17 | 17 | 18 | 18 | 17 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 17 |
Feels °C | 10 | 10 | 12 | 10 | 6 | 5 | 6 | 8 | 10 | 12 | 12 | 11 | 12 | 11 | 12 | 11 | 10 | 10 | 11 | 12 | 13 | 14 | 15 | 15 |
Swell 1 Height (m) Direction Period (s) | WSW 15 | WSW 16 | WSW 16 | WSW 16 | — | — | — | W 18 | WSW 15 | WSW 15 | W 15 | W 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 16 | WSW 16 |
| kJ | 1833 | 2007 | 1826 | 1807 | — | — | — | 336 | 6228 | 6322 | 6093 | 6079 | 5898 | 5641 | 4944 | 4247 | 3604 | 3074 | 2664 | 2427 | 2616 | 3241 | 3905 | 4056 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | N 4 | N 4 | NNW 4 | NW 5 | W 16 | WSW 10 | WSW 12 | WSW 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 21 | 38 | 37 | 124 | 5835 | 3429 | 4577 | 4573 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 258 | 1650 | 1144 | 1138 | 1144 | 638 | 937 | 910 | 173 | 64 | 28 | 7 | 355 | 355 | 309 | 309 | 309 | 309 | 118 | 118 | 173 | 144 | 144 | 32 |
Best forecast wave conditions in Rottnest Island | ||||||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||||||
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