Surf Forecasts:
How big are the waves at Cathedral Rock today (18 Aug):
- Morning surf: Morning surf (18 Aug, local time) - 11ft (3.5m), 15s period with WSW swell.
- Afternoon surf: Afternoon surf (18 Aug, local time) - 11ft (3.5m), 16s period with WSW swell.
- Evening surf: Evening surf (18 Aug, local time) - 10ft (3.0m), 16s period with WSW swell.
The current surf forecast for Cathedral Rock at 10AM is: 3.5m 15s primary swell from a West-southwest direction (forecast issued at 07:00am August 18). The wind direction is predicted to be cross-onshore.
| Time (AWST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Aug) | 11ft (3.5m) | 15s |
| Afternoon (18 Aug) | 11ft (3.5m) | 16s |
| Evening (18 Aug) | 10ft (3.0m) | 16s |
Table - waves today at Cathedral Rock. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 2mm), mostly falling on Wed morning. Very mild (max 17°C on Wed morning, min 15°C on Tue morning). Wind will be generally light. | |||||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | |||||||||||||||||||||
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 15 | W 16 | W 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 6322 | 6161 | 6079 | 6236 | 5641 | 4944 | 4528 | 3863 | 3311 | 2700 | 2460 | 2786 | 3424 | 4263 | 4318 | 4430 | 4213 | 3944 | 3594 | 2986 | 2696 | 2696 | 2491 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | off |
High Tide | 00:56AM0.69m | 1:43AM0.77m | |||||||||||||||||||||
Low Tide | 4:15PM0.31m | 4:07PM0.31m | 4:05PM0.34m | ||||||||||||||||||||
 |  |  | | |  | | | |  |  | | | |  |  | | | | | | | | |
 | 6:52 | — | — | — | — | — | — | — | 6:50 | — | — | — | — | — | — | — | 6:50 | — | — | — | — | — | — |
 | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — |
mm | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | 1 | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 16 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 |
Feels °C | 10 | 11 | 12 | 11 | 11 | 11 | 11 | 10 | 10 | 12 | 14 | 14 | 14 | 15 | 14 | 13 | 13 | 14 | 14 | 15 | 14 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | WSW 15 | WSW 15 | W 16 | W 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 |
| kJ | 6322 | 6161 | 6079 | 6236 | 5641 | 4944 | 4528 | 3863 | 3311 | 2700 | 2460 | 2786 | 3424 | 4263 | 4318 | 4430 | 4213 | 3944 | 3594 | 2986 | 2696 | 2696 | 2491 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 910 | 209 | 173 | 28 | 309 | 377 | 377 | 355 | 309 | 309 | 309 | 57 | 209 | 173 | 144 | 144 | 44 | 0 | 0 | 1 | 0 | 0 | 144 |
Best forecast wave conditions in Rottnest Island | |||||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||||
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