Surf Forecasts:
How big are the waves at Extensions today (21 Oct):
- Afternoon surf: Afternoon surf (21 Oct, local time) - 10ft (3.0m), 12s period with WSW swell.
- Evening surf: Evening surf (21 Oct, local time) - 7ft (2.2m), 12s period with SW swell.
The current surf forecast for Extensions at 11PM is: 2.3m 12s primary swell from a Southwest direction and 1.5m 11s secondary swell from a West direction (forecast issued at 07:00pm October 21). An open ocean swell of 0.1m 10s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Oct) | - | - |
| Afternoon (21 Oct) | 10ft (3.0m) | 12s |
| Evening (21 Oct) | 7ft (2.2m) | 12s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 2mm), mostly falling on Wed night. Very mild (max 18°C on Fri afternoon, min 14°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Wed 21 | Thursday 22 | Friday 23 | |||||||||||||||||
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 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 2242 | 1247 | 1403 | 1111 | 1149 | 999 | 930 | 914 | 986 | 908 | 1045 | 1151 | 786 | 1534 | 1483 | 1154 | 978 | 800 | 673 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | on | on | on | on | cross-on | cross | cross-off | cross-off | cross-off | off | off | glassy | cross-on | cross-on | cross-on |
High Tide | 00:30AM1.17m | 12:45PM1.35m | 1:07AM1.29m | 1:18PM1.47m | |||||||||||||||
Low Tide | 6:33PM0.43m | 6:34AM0.39m | 7:06PM0.29m | 7:09AM0.29m | 7:39PM0.16m | ||||||||||||||
 |  |  | | |  | | | |  | | | |  | | | |  | | |
 | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — |
 | 7:04 | — | — | — | — | — | — | — | 7:05 | — | — | — | — | — | — | — | 7:06 | — | — |
mm | — | — | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 16 | 15 | 15 | 15 | 14 | 14 | 14 | 16 | 18 | 17 | 17 | 17 |
Feels °C | 12 | 13 | 12 | 12 | 11 | 10 | 10 | 12 | 11 | 13 | 13 | 11 | 10 | 11 | 14 | 16 | 14 | 14 | 15 |
Swell 1 Height (m) Direction Period (s) | WSW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 11 |
| kJ | 2242 | 1247 | 1403 | 1111 | 1149 | 999 | 930 | 914 | 986 | 908 | 1045 | 1151 | 786 | 1534 | 1483 | 1154 | 978 | 800 | 673 |
Swell 2 Height (m) Direction Period (s) | W 11 | W 11 | SE 10 | ESE 10 | ESE 9 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | S 11 | W 10 | W 10 | W 10 | W 10 | W 9 | W 9 |
| kJ | 279 | 713 | 4 | 9 | 9 | 517 | 448 | 387 | 394 | 329 | 272 | 220 | 410 | 128 | 94 | 90 | 65 | 61 | 58 |
Swell 3 Height (m) Direction Period (s) | W 15 | SE 10 | — | — | — | — | SE 10 | SE 10 | SE 10 | — | — | W 19 | W 10 | NW 13 | NW 13 | SW 16 | WSW 16 | W 16 | WSW 15 |
| kJ | 4 | 4 | — | — | — | — | 4 | 4 | 4 | — | — | 7 | 168 | 7 | 7 | 10 | 25 | 5 | 22 |
Wind waves Height (m) Direction Period (s) | W 11 | — | W 11 | W 11 | W 11 | W 11 | — | — | — | — | — | — | — | E 3 | E 3 | — | — | — | — |
| kJ | 875 | — | 533 | 617 | 533 | 282 | — | — | — | — | — | — | — | 5 | 6 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 20 | 3 | 1 | 3 | 3 | 5 | 5 | 5 | 20 | 5 | 0 | 12 | 12 | 0 | 0 | 0 | 1 | 1 | 3 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||
Header Global | |||||||||||||||||||
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