Surf Forecasts:
How big are the waves at Extensions today (19 Sep):
- Afternoon surf: Afternoon surf (19 Sep, local time) - 4.5ft (1.3m), 12s period with SW swell.
- Evening surf: Evening surf (19 Sep, local time) - 7ft (2.1m), 14s period with SW swell.
The current surf forecast for Extensions at 11PM is: 2.3m 14s primary swell from a Southwest direction (forecast issued at 07:00pm September 19). An open ocean swell of 1.9m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Sep) | - | - |
| Afternoon (19 Sep) | 4.5ft (1.3m) | 12s |
| Evening (19 Sep) | 7ft (2.1m) | 14s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Short Range ForecastSome drizzle, heaviest during Tue afternoon. Warm (max 25°C on Tue morning, min 15°C on Sat night). Winds decreasing (strong winds from the SE on Sat night, light winds from the NNE by Tue morning). | |||||||||||||||||||
Sat 19 | Sunday 20 | Monday 21 | |||||||||||||||||
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 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | SW 11 | WSW 11 | SW 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 1255 | 1754 | 1857 | 1810 | 1682 | 1502 | 1401 | 1198 | 1100 | 953 | 784 | 680 | 545 | 536 | 472 | 456 | 373 | 329 | 283 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 9:33PM0.93m | 11:22AM0.95m | 11:39PM0.99m | 12:27PM1.07m | |||||||||||||||
Low Tide | 2:48PM0.73m | 4:46AM0.66m | 5:46PM0.68m | 6:12AM0.56m | 6:42PM0.56m | ||||||||||||||
 |  | | | | | | | | | | | | | | | | | | |
 | — | — | — | — | 6:39 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | — | — |
 | 6:39 | — | — | — | — | — | — | — | 6:39 | — | — | — | — | — | — | — | 6:40 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 16 | 15 | 15 | 15 | 16 | 18 | 18 | 18 | 18 | 17 | 16 | 16 | 16 | 19 | 23 | 24 | 22 | 20 |
Feels °C | 6 | 8 | 8 | 9 | 10 | 11 | 13 | 12 | 11 | 11 | 11 | 10 | 11 | 11 | 15 | 20 | 20 | 18 | 17 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | SW 11 | WSW 11 | SW 11 |
| kJ | 1255 | 1754 | 1857 | 1810 | 1682 | 1502 | 1401 | 1198 | 1100 | 953 | 784 | 680 | 545 | 536 | 472 | 456 | 373 | 329 | 283 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 15 | SW 15 | SSW 15 | SSW 15 | SW 14 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 60 | 57 | 86 | 142 | 211 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 |
| kJ | 328 | 328 | 266 | 214 | 149 | 149 | 136 | 178 | 221 | 275 | 286 | 247 | 221 | 203 | 141 | 128 | 136 | 166 | 126 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 48 | 37 | 37 | 26 | 26 | 25 | 27 | 30 | 37 | 37 | 37 | 30 | 26 | 25 | 12 | 12 | 12 | 25 | 12 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||
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