Surf Forecasts:
How big are the waves at Cathedral Rock today (21 Aug):
- Morning surf: Morning surf (21 Aug, local time) - 7ft (2.2m), 15s period with WSW swell.
- Afternoon surf: Afternoon surf (21 Aug, local time) - 7ft (2.1m), 14s period with WSW swell.
- Evening surf: Evening surf (21 Aug, local time) - 7ft (2.1m), 14s period with WSW swell.
The current surf forecast for Cathedral Rock at 6AM is: 2.2m 15s primary swell from a West-southwest direction (forecast issued at 01:00am August 21). The wind direction is predicted to be cross-offshore.
| Time (AWST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Aug) | 7ft (2.2m) | 15s |
| Afternoon (21 Aug) | 7ft (2.1m) | 14s |
| Evening (21 Aug) | 7ft (2.1m) | 14s |
Table - waves today at Cathedral Rock. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 17°C on Fri afternoon, min 14°C on Fri morning). Mainly strong winds. | ||||||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 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 |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 16 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 2459 | 2179 | 2094 | 2010 | 1822 | 1822 | 1822 | 1600 | 1600 | 1265 | 1319 | 1881 | 1527 | 1307 | 1154 | 904 | 712 | 603 | 612 | 603 | 634 | 690 | 700 | 1029 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | cross-off | cross-off | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 2:45AM0.84m | 4:01AM0.91m | 5:17AM0.95m | |||||||||||||||||||||
Low Tide | 4:03PM0.38m | 3:59PM0.41m | 3:57PM0.42m | |||||||||||||||||||||
 | |  | | | | | | | |  |  | | |  | |  | | | | | | | | |
 | — | 6:48 | — | — | — | — | — | — | — | 6:48 | — | — | — | — | — | — | — | 6:46 | — | — | — | — | — | — |
 | — | — | — | — | — | 5:53 | — | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:54 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 14 | 14 | 16 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 16 | 15 | 15 | 14 | 15 | 15 | 16 | 16 | 15 |
Feels °C | 12 | 12 | 11 | 11 | 13 | 13 | 12 | 13 | 12 | 14 | 13 | 15 | 14 | 10 | 10 | 8 | 8 | 8 | 8 | 10 | 10 | 12 | 11 | 10 |
Swell 1 Height (m) Direction Period (s) | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 13 |
| kJ | 2459 | 2179 | 2094 | 2010 | 1822 | 1822 | 1822 | 1600 | 1600 | 1265 | 1319 | 1881 | 1527 | 1307 | 1154 | 904 | 712 | 603 | 612 | 603 | 634 | 690 | 700 | 890 |
Swell 2 Height (m) Direction Period (s) | — | — | W 26 | SW 24 | WSW 24 | WSW 22 | SW 22 | WSW 19 | WSW 19 | WSW 18 | WSW 18 | — | — | — | — | — | W 20 | WSW 20 | WSW 7 | WSW 18 | WSW 18 | WSW 17 | WSW 16 | WSW 16 |
| kJ | — | — | 13 | 22 | 54 | 95 | 118 | 584 | 441 | 759 | 596 | — | — | — | — | — | 30 | 38 | 68 | 182 | 249 | 404 | 604 | 1029 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 20 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 75 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | S 3 | S 4 | SSE 4 | — | — | — | — | SSW 4 | SW 6 | SW 6 | SSW 6 | SSW 6 | S 5 | SSW 6 | SSW 6 | SSW 5 | SW 5 | — |
| kJ | — | — | — | — | — | — | 5 | 6 | 5 | — | — | — | — | 16 | 159 | 223 | 202 | 166 | 77 | 93 | 68 | 40 | 51 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 3 | 3 | 0 | 0 | 28 | 64 | 0 | 0 | 0 | 0 | 0 | 410 | 144 | 144 | 144 | 144 | 144 | 31 | 144 | 177 | 1650 | 144 | 28 |
Best forecast wave conditions in Rottnest Island | ||||||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||||||
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