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) - 8ft (2.4m), 17s period with WSW swell.
- Evening surf: Evening surf (13 Aug, local time) - 7ft (2.1m), 16s period with WSW swell.
The current surf forecast for Extensions at 8PM is: 2.1m 16s primary swell from a West-southwest direction and 0.9m 6s secondary swell from a North-northwest direction (forecast issued at 01:00pm August 13). An open ocean swell of 0.6m 9s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Aug) | 8ft (2.5m) | 17s |
| Afternoon (13 Aug) | 8ft (2.4m) | 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 13°C on Sat morning). Winds decreasing (fresh winds from the NW on Fri afternoon, calm by Sat night). | |||||||||||||||||||||
Thu 13 | Friday 14 | Saturday 15 | |||||||||||||||||||
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 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 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 14 | WSW 14 | WSW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 3782 | 3262 | 2535 | 2178 | 2049 | 1832 | 1743 | 1557 | 1475 | 1475 | 1257 | 1139 | 1059 | 1244 | 1196 | 1179 | 1161 | 1267 | 1652 | 1700 | 1526 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-on | cross | cross | cross | cross-on | cross | cross-on | cross-on | cross-on | cross | cross-on | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | glassy |
High Tide | 3:53PM1.68m | 4:09AM1.56m | 4:30PM1.69m | 4:46AM1.51m | 5:05PM1.64m | ||||||||||||||||
Low Tide | 9:40AM-0.02m | 10:08PM0.02m | 10:16AM-0.01m | 10:46PM0.04m | 10:51AM0.05m | ||||||||||||||||
 | | |  |  | | | |  | | | | | | | | | |  | | | |
 | — | — | — | — | — | — | 7:26 | — | — | — | — | — | — | — | 7:26 | — | — | — | — | — | — |
 | — | — | 6:14 | — | — | — | — | — | — | — | 6:14 | — | — | — | — | — | — | — | 6:15 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 24 | 23 | 22 | 21 | 20 | 16 | 14 | 14 | 14 | 15 | 15 | 15 | 14 | 14 | 13 | 13 | 14 | 15 | 15 | 16 |
Feels °C | 17 | 21 | 20 | 17 | 16 | 14 | 10 | 9 | 9 | 9 | 11 | 13 | 12 | 11 | 13 | 12 | 12 | 13 | 14 | 14 | 15 |
Swell 1 Height (m) Direction Period (s) | 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 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 14 | WSW 14 | WSW 14 |
| kJ | 3782 | 3262 | 2535 | 2178 | 2049 | 1832 | 1743 | 1557 | 1475 | 1475 | 1257 | 1139 | 1059 | 1244 | 1196 | 1179 | 1161 | 1267 | 1652 | 1700 | 1526 |
Swell 2 Height (m) Direction Period (s) | SE 11 | SE 10 | SE 10 | SE 9 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | ESE 11 | W 18 | WNW 6 | WNW 6 | WNW 6 | W 6 | W 8 | W 7 | ESE 9 | ESE 10 |
| kJ | 194 | 129 | 74 | 54 | 59 | 64 | 43 | 30 | 29 | 30 | 19 | 12 | 162 | 45 | 42 | 43 | 46 | 93 | 52 | 16 | 18 |
Swell 3 Height (m) Direction Period (s) | — | NNW 7 | NNW 7 | — | — | — | — | — | — | — | — | SE 11 | ESE 11 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | — | — | — |
| kJ | — | 9 | 18 | — | — | — | — | — | — | — | — | 5 | 12 | 17 | 29 | 29 | 16 | 16 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | NNW 6 | NNW 5 | NNW 4 | NNW 4 | NNW 5 | NW 5 | NW 5 | NW 6 | NW 6 | WNW 6 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 57 | 28 | 25 | 39 | 61 | 84 | 103 | 89 | 61 | 55 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 1 | 1 | 23 | 26 | 24 | 35 | 26 | 25 | 1 | 5 | 1 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
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