Surf Forecasts:
How big are the waves at Extensions today (12 Sep):
- Morning surf: Morning surf (12 Sep, local time) - 6.5ft (2.0m), 14s period with SW swell.
- Afternoon surf: Afternoon surf (12 Sep, local time) - 8ft (2.4m), 16s period with SW swell.
- Evening surf: Evening surf (12 Sep, local time) - 8ft (2.5m), 16s period with SW swell.
The current surf forecast for Extensions at 3PM is: 2.4m 16s primary swell from a Southwest direction and 1.1m 18s secondary swell from a Southwest direction (forecast issued at 07:00am September 12). An open ocean swell of 2.5m 7s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Sep) | 6.5ft (2.0m) | 14s |
| Afternoon (12 Sep) | 8ft (2.4m) | 16s |
| Evening (12 Sep) | 8ft (2.5m) | 16s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 7mm), mostly falling on Sun night. Very mild (max 17°C on Sun night, min 14°C on Sat afternoon). Winds decreasing (near gales from the ESE on Sat afternoon, light winds from the NW by Sun night). | |||||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | |||||||||||||||||||||
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) | SW 14 | SW 14 | SW 15 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | NW 7 | NW 7 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 1064 | 1580 | 2038 | 2421 | 3715 | 3534 | 3185 | 2633 | 2278 | 1983 | 1665 | 1363 | 1119 | 1014 | 827 | 663 | 643 | 496 | 473 | 355 | 349 | 352 | 393 |
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 | off | off | off | off | off | off | off | off | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on | cross | cross-on |
High Tide | 3:58PM1.69m | 4:16AM1.52m | 4:29PM1.63m | 4:47AM1.45m | 4:59PM1.53m | ||||||||||||||||||
Low Tide | 9:48AM0.03m | 10:15PM0.01m | 10:19AM0.08m | 10:45PM0.07m | 10:49AM0.16m | ||||||||||||||||||
 |  | |  |  |  | | | | | | | |  | | | | |  |  | | | | |
 | 6:50 | — | — | — | — | — | — | — | 6:48 | — | — | — | — | — | — | — | 6:47 | — | — | — | — | — | — |
 | — | — | — | — | 6:35 | — | — | — | — | — | — | — | 6:35 | — | — | — | — | — | — | — | 6:36 | — | — |
mm | — | — | — | 1 | — | — | — | — | — | — | — | — | — | 1 | 2 | 1 | — | 1 | 1 | — | — | — | — |
Temp °C | 15 | 15 | 15 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 17 | 17 | 15 | 15 | 15 | 17 | 16 | 16 | 16 | 15 |
Feels °C | 7 | 6 | 5 | 4 | 5 | 5 | 6 | 7 | 7 | 10 | 12 | 11 | 12 | 15 | 17 | 12 | 12 | 12 | 12 | 9 | 9 | 10 | 8 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 15 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SE 9 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 |
| kJ | 1064 | 1580 | 2038 | 2421 | 3715 | 3534 | 3185 | 2633 | 2278 | 1983 | 1665 | 1363 | 1119 | 1014 | 430 | 663 | 643 | 496 | 473 | 355 | 349 | 263 | 259 |
Swell 2 Height (m) Direction Period (s) | WSW 12 | — | — | SW 18 | — | — | — | — | — | — | — | — | — | — | SW 13 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 11 | SE 10 | SE 10 |
| kJ | 29 | — | — | 735 | — | — | — | — | — | — | — | — | — | — | 827 | 246 | 144 | 122 | 50 | 54 | 58 | 25 | 23 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SE 11 | SE 13 | SE 13 | SE 13 | SE 13 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 31 | 7 | 7 | 7 | 7 |
Wind waves Height (m) Direction Period (s) | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 8 | SE 8 | SE 8 | SE 9 | SE 8 | SE 9 | SE 9 | — | NNW 4 | NNW 5 | NNW 5 | NNW 5 | NW 6 | NW 6 | NW 7 | NW 7 |
| kJ | 742 | 643 | 676 | 700 | 774 | 754 | 775 | 909 | 736 | 623 | 625 | 623 | 760 | 582 | — | 19 | 52 | 98 | 116 | 189 | 301 | 352 | 393 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 37 | 41 | 48 | 337 | 337 | 48 | 37 | 30 | 30 | 25 | 18 | 25 | 25 | 0 | 1 | 1 | 35 | 35 | 50 | 167 | 220 | 59 | 66 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||||
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