Surf Forecasts:
How big are the waves at Extensions today (11 Aug):
- Morning surf: Morning surf (11 Aug, local time) - 6ft (1.9m), 12s period with SSW swell.
- Afternoon surf: Afternoon surf (11 Aug, local time) - 5ft (1.5m), 12s period with SSW swell.
- Evening surf: Evening surf (11 Aug, local time) - 3.5ft (1.0m), 23s period with SW swell.
The current surf forecast for Extensions at 2PM is: 1.6m 12s primary swell from a South-southwest direction and 0.4m 25s secondary swell from a Southwest direction (forecast issued at 07:00am August 11). An open ocean swell of 2.0m 8s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Aug) | 6ft (1.9m) | 12s |
| Afternoon (11 Aug) | 5ft (1.5m) | 12s |
| Evening (11 Aug) | 3.5ft (1.0m) | 23s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 24°C on Thu afternoon, min 11°C on Tue night). Winds decreasing (near gales from the ESE on Tue afternoon, calm by Thu afternoon). | |||||||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | |||||||||||||||||||||
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) | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SW 23 | SW 22 | SW 21 | SW 20 | SW 19 | SW 18 | SW 18 | SW 17 | SW 17 | SW 16 | SW 21 | SW 20 | SW 17 | SW 17 | WSW 17 | WSW 16 | WSW 16 | WSW 16 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 1619 | 1301 | 876 | 669 | 475 | 1055 | 1542 | 2150 | 2207 | 2339 | 2344 | 2267 | 2375 | 2595 | 2311 | 1892 | 2058 | 3538 | 3538 | 3262 | 2535 | 2178 | 2228 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | cross-off | cross-off | glassy | glassy | cross |
High Tide | 2:32PM1.51m | 2:48AM1.53m | 3:14PM1.62m | 3:30AM1.57m | 3:53PM1.68m | ||||||||||||||||||
Low Tide | 8:20AM0.10m | 8:44PM0.13m | 9:02AM0.02m | 9:28PM0.05m | 9:40AM-0.02m | 10:08PM0.02m | |||||||||||||||||
 |  | | | | | | | | | | | | | | | | | | | | | | |
 | 7:30 | — | — | — | — | — | — | — | 7:28 | — | — | — | — | — | — | — | 7:28 | — | — | — | — | — | — |
 | — | — | — | — | 6:12 | — | — | — | — | — | — | — | 6:13 | — | — | — | — | — | — | — | 6:14 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 12 | 12 | 15 | 16 | 13 | 12 | 11 | 11 | 12 | 14 | 17 | 20 | 20 | 20 | 20 | 20 | 19 | 21 | 24 | 23 | 21 | 21 |
Feels °C | 3 | 3 | 3 | 6 | 5 | 2 | 3 | 5 | 4 | 6 | 9 | 13 | 18 | 14 | 14 | 15 | 15 | 15 | 17 | 19 | 22 | 19 | 17 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SW 22 | SW 21 | SW 20 | SW 19 | SW 18 | SW 18 | SW 17 | SW 17 | SW 16 | SW 16 | WSW 16 | SW 17 | SW 17 | WSW 17 | WSW 16 | WSW 16 | WSW 16 |
| kJ | 1619 | 1301 | 876 | 669 | 475 | 329 | 1542 | 2150 | 2207 | 2339 | 2344 | 2267 | 2375 | 2595 | 2311 | 1892 | 2058 | 3538 | 3538 | 3262 | 2535 | 2178 | 2228 |
Swell 2 Height (m) Direction Period (s) | WSW 11 | W 16 | WSW 10 | SW 25 | SW 24 | SW 23 | SSW 11 | SSW 11 | SW 11 | SW 11 | SE 8 | SE 8 | SE 8 | S 10 | SW 21 | SW 21 | SW 20 | SE 10 | SE 11 | SE 11 | SE 10 | SE 9 | SE 10 |
| kJ | 66 | 5 | 39 | 161 | 455 | 1055 | 251 | 211 | 172 | 163 | 283 | 219 | 196 | 8 | 880 | 1875 | 1976 | 281 | 246 | 165 | 90 | 70 | 106 |
Swell 3 Height (m) Direction Period (s) | — | W 27 | SW 26 | WSW 10 | WSW 10 | WSW 10 | — | — | — | SW 11 | SW 10 | SW 10 | SW 10 | — | S 10 | S 10 | — | — | — | — | NNW 7 | NNW 6 | — |
| kJ | — | 14 | 27 | 20 | 20 | 20 | — | — | — | 117 | 110 | 84 | 51 | — | 8 | 9 | — | — | — | — | 17 | 21 | — |
Wind waves Height (m) Direction Period (s) | SE 7 | SE 8 | SE 8 | SE 8 | SE 7 | SE 8 | SE 8 | SE 8 | SE 8 | SE 9 | ESE 9 | ESE 9 | ESE 9 | SE 9 | SE 9 | SE 9 | SE 10 | ESE 10 | — | — | — | — | NNW 6 |
| kJ | 404 | 413 | 489 | 444 | 585 | 773 | 619 | 493 | 398 | 384 | 898 | 791 | 673 | 220 | 342 | 266 | 385 | 867 | — | — | — | — | 18 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 37 | 37 | 37 | 27 | 30 | 30 | 26 | 18 | 25 | 18 | 0 | 0 | 0 | 18 | 18 | 0 | 0 | 0 | 0 | 20 | 0 | 0 | 1 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||||
Header Global | |||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Extensions surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest