Surf Forecasts:
How big are the waves at Extensions today (13 Aug):
- Morning surf: Morning surf (13 Aug, local time) - 8ft (2.5m), 17s period with SW swell.
- Afternoon surf: Afternoon surf (13 Aug, local time) - 7.5ft (2.3m), 17s period with SW swell.
- Evening surf: Evening surf (13 Aug, local time) - 7ft (2.1m), 16s period with WSW swell.
The current surf forecast for Extensions at 2AM is: 1.9m 16s primary swell from a Southwest direction and 1.5m 21s secondary swell from a Southwest direction (forecast issued at 07:00pm August 12). An open ocean swell of 2.3m 9s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 5.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Aug) | 8ft (2.5m) | 17s |
| Afternoon (13 Aug) | 7.5ft (2.3m) | 17s |
| Evening (13 Aug) | 7ft (2.1m) | 16s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 24°C on Thu afternoon, min 14°C on Fri night). Winds decreasing (fresh winds from the ESE on Wed night, light winds from the ESE by Sat morning). | |||||||||||||||||||
Wed 12 | Thursday 13 | Friday 14 | |||||||||||||||||
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 17 | SW 17 | SW 16 | SW 21 | SW 20 | SW 17 | SW 17 | WSW 17 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 14 |
Wave Graph  | |||||||||||||||||||
 kJ | 2375 | 2595 | 2135 | 1892 | 2058 | 3908 | 3782 | 3262 | 2535 | 2178 | 2049 | 1832 | 1743 | 1557 | 1475 | 1475 | 1257 | 1262 | 1226 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | cross-off | cross-off | cross-off | cross-on | cross | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-on | on |
High Tide | 3:14PM1.62m | 3:30AM1.57m | 3:53PM1.68m | 4:09AM1.56m | 4:30PM1.69m | ||||||||||||||
Low Tide | 9:28PM0.05m | 9:40AM-0.02m | 10:08PM0.02m | 10:16AM-0.01m | 10:46PM0.04m | ||||||||||||||
 |  |  | | | | | | | | | | | | |  | | | | |
 | — | — | — | — | 7:28 | — | — | — | — | — | — | — | 7:26 | — | — | — | — | — | — |
 | 6:13 | — | — | — | — | — | — | — | 6:14 | — | — | — | — | — | — | — | 6:14 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 19 | 20 | 21 | 21 | 20 | 21 | 24 | 22 | 22 | 22 | 21 | 20 | 16 | 15 | 16 | 15 | 15 | 15 |
Feels °C | 17 | 12 | 14 | 16 | 17 | 16 | 17 | 21 | 19 | 18 | 18 | 16 | 15 | 11 | 10 | 12 | 12 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 17 | SW 17 | SW 16 | SW 16 | WSW 16 | SW 17 | SW 17 | WSW 17 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 14 |
| kJ | 2375 | 2595 | 2135 | 1892 | 2058 | 3908 | 3782 | 3262 | 2535 | 2178 | 2049 | 1832 | 1743 | 1557 | 1475 | 1475 | 1257 | 1262 | 1226 |
Swell 2 Height (m) Direction Period (s) | SE 8 | S 10 | SW 21 | SW 21 | SW 20 | SE 10 | SE 11 | SE 11 | SE 10 | SE 10 | SE 9 | SE 9 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | ESE 11 | WNW 6 |
| kJ | 181 | 8 | 880 | 1875 | 1976 | 281 | 202 | 134 | 98 | 73 | 54 | 39 | 41 | 40 | 30 | 30 | 30 | 12 | 43 |
Swell 3 Height (m) Direction Period (s) | SW 10 | — | — | SE 9 | SE 10 | SE 11 | — | NNW 7 | NNW 7 | NNW 7 | — | — | — | — | — | — | — | — | ESE 11 |
| kJ | 50 | — | — | 238 | 310 | 90 | — | 15 | 26 | 40 | — | — | — | — | — | — | — | — | 12 |
Wind waves Height (m) Direction Period (s) | ESE 9 | SE 8 | SE 8 | ESE 9 | ESE 10 | — | — | — | — | — | NNW 5 | NNW 4 | NNW 4 | NNW 4 | NW 5 | NW 5 | NW 5 | WNW 5 | — |
| kJ | 541 | 227 | 291 | 917 | 980 | — | — | — | — | — | 24 | 14 | 21 | 35 | 43 | 55 | 57 | 46 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 18 | 18 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 23 | 24 | 1 | 35 | 25 | 1 | 1 | 3 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||
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