Surf Forecasts:
How big are the waves at Jacobs Bay today (20 Aug):
- Morning surf: Morning surf (20 Aug, local time) - 10ft (3.0m), 13s period with SW swell.
- Afternoon surf: Afternoon surf (20 Aug, local time) - 10ft (3.0m), 13s period with SW swell.
- Evening surf: Evening surf (20 Aug, local time) - 8ft (2.5m), 12s period with SW swell.
The current surf forecast for Jacobs Bay at 7PM is: 3.0m 12s primary swell from a Southwest direction and 1.0m 5s secondary swell from a South direction (forecast issued at 01:00pm August 20). The wind direction is predicted to be cross-shore and the swell rating is 11.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Aug) | 10ft (3.0m) | 13s |
| Afternoon (20 Aug) | 10ft (3.0m) | 13s |
| Evening (20 Aug) | 8ft (2.5m) | 12s |
Table - waves today at Jacobs Bay. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 15°C on Sat morning, min 12°C on Thu night). Winds decreasing (fresh winds from the S on Thu afternoon, calm by Sat morning). | |||||||||||||||||||||
Thu 20 | Friday 21 | Saturday 22 | |||||||||||||||||||
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) | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SSW 10 | SSW 10 | SSW 11 | SSW 10 | SSW 13 | SSW 13 | SW 11 | SW 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 3597 | 3267 | 2904 | 2148 | 1760 | 1880 | 1735 | 1130 | 914 | 1106 | 743 | 860 | 1009 | 451 | 404 | 353 | 352 | 469 | 476 | 638 | 972 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross-on | cross | glassy | glassy | cross-on | cross | cross | cross-off |
High Tide | 8:10AM1.00m | 8:35PM1.05m | 9:51AM0.94m | 10:26PM1.00m | 11:52AM0.98m | ||||||||||||||||
Low Tide | 2:00PM0.63m | 3:21AM0.63m | 3:58PM0.71m | 5:33AM0.61m | 6:09PM0.66m | ||||||||||||||||
 | | |  | | | | | | | |  | | | | | | | | | | |
 | — | — | — | — | — | — | 7:20 | — | — | — | — | — | — | — | 7:18 | — | — | — | — | — | — |
 | — | — | 6:22 | — | — | — | — | — | — | — | 6:22 | — | — | — | — | — | — | — | 6:23 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 13 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 15 | 15 | 15 | 15 | 15 |
Feels °C | 9 | 9 | 8 | 8 | 8 | 9 | 8 | 9 | 10 | 10 | 9 | 9 | 9 | 10 | 11 | 12 | 15 | 12 | 12 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | WSW 11 | SSW 10 | SSW 10 | SSW 11 | SSW 10 | SSW 13 | SSW 13 | SW 11 | SW 11 |
| kJ | 3597 | 3267 | 2904 | 2148 | 1760 | 1880 | 1735 | 1130 | 914 | 1106 | 743 | 860 | 366 | 451 | 404 | 353 | 352 | 469 | 476 | 638 | 972 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | SSW 10 | WSW 11 | WSW 11 | WSW 10 | WSW 11 | WSW 10 | WSW 10 | WSW 16 | WSW 15 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 298 | 372 | 291 | 265 | 214 | 163 | 135 | 51 | 193 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | SSW 14 | SSW 14 | SSW 14 | — | W 17 | WSW 17 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 68 | 75 | 121 | — | 6 | 28 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | S 5 | S 5 | — | S 5 | S 6 | S 6 | S 6 | S 7 | — | SW 11 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 41 | 55 | — | 75 | 96 | 113 | 116 | 86 | — | 1009 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 29 | 135 | 135 | 115 | 29 | 28 | 28 | 0 | 0 | 31 | 31 | 29 | 29 | 29 | 18 | 0 | 0 | 31 | 29 | 28 | 0 |
Best forecast wave conditions in West Coast | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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