Surf Forecasts:
How big are the waves at Extensions today (10 Sep):
- Morning surf: Morning surf (10 Sep, local time) - 7ft (2.1m), 15s period with SW swell.
- Afternoon surf: Afternoon surf (10 Sep, local time) - 8ft (2.5m), 14s period with WSW swell.
- Evening surf: Evening surf (10 Sep, local time) - 7.5ft (2.3m), 13s period with WSW swell.
The current surf forecast for Extensions at 7AM is: 1.8m 15s primary swell from a Southwest direction and 1.6m 12s secondary swell from a West-southwest direction (forecast issued at 01:00am September 10). An open ocean swell of 0.7m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (10 Sep) | 7ft (2.1m) | 15s |
| Afternoon (10 Sep) | 8ft (2.5m) | 14s |
| Evening (10 Sep) | 7.5ft (2.3m) | 13s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Short Range ForecastSome drizzle, heaviest during Sat afternoon. Very mild (max 15°C on Thu morning, min 14°C on Thu night). Winds increasing (light winds from the SSE on Thu morning, near gales from the ESE by Sat night). | ||||||||||||||||||||||||
Thursday 10 | Friday 11 | Saturday 12 | ||||||||||||||||||||||
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 | 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) | WSW 12 | SW 16 | SW 15 | SW 14 | WSW 14 | WSW 13 | WSW 13 | SW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | SW 14 | SW 14 | SW 15 | SW 17 | SW 16 | SW 16 | SW 15 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 759 | 1330 | 1520 | 2590 | 2378 | 1859 | 1726 | 2071 | 1383 | 1116 | 1080 | 919 | 816 | 710 | 575 | 475 | 366 | 791 | 1344 | 2038 | 3275 | 3569 | 3353 | 2974 |
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 | cross-off | cross-off | cross-off | off | cross-off |
High Tide | 2:33AM1.51m | 2:52PM1.66m | 3:10AM1.55m | 3:26PM1.70m | 3:44AM1.55m | 3:58PM1.69m | ||||||||||||||||||
Low Tide | 8:42AM0.04m | 9:09PM0.01m | 9:16AM0.01m | 9:43PM-0.01m | 9:48AM0.03m | 10:15PM0.01m | ||||||||||||||||||
 |  |  |  | | | | |  | | | | | | | | | | | |  | | | | |
 | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:50 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:32 | — | — | — | — | — | — | — | 6:34 | — | — | — | — | — | — | — | 6:35 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 15 |
Feels °C | 10 | 11 | 12 | 13 | 13 | 12 | 12 | 10 | 8 | 6 | 6 | 5 | 6 | 5 | 5 | 6 | 7 | 7 | 6 | 7 | 6 | 5 | 4 | 5 |
Swell 1 Height (m) Direction Period (s) | WSW 12 | SW 16 | SW 15 | SW 14 | WSW 14 | WSW 13 | WSW 13 | SW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | SW 14 | SW 14 | SW 15 | SW 17 | SW 16 | SW 16 | SW 15 |
| kJ | 759 | 1330 | 1520 | 2590 | 2378 | 1859 | 1726 | 2071 | 1383 | 1116 | 1080 | 919 | 816 | 710 | 575 | 475 | 366 | 791 | 1344 | 2038 | 3275 | 3569 | 3353 | 2974 |
Swell 2 Height (m) Direction Period (s) | SW 17 | WSW 12 | WSW 12 | — | — | — | — | — | — | SW 7 | SSW 7 | — | — | — | SW 14 | SSW 10 | SW 14 | WSW 12 | — | — | — | — | — | — |
| kJ | 536 | 722 | 756 | — | — | — | — | — | — | 139 | 153 | — | — | — | 74 | 57 | 293 | 233 | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | SE 9 | SSE 9 | — | — | — | — | — | — | — | — | — | — | — | — | SW 15 | SW 15 | SSW 10 | — | — | — | — | — | — | — |
| kJ | 20 | 8 | — | — | — | — | — | — | — | — | — | — | — | — | 75 | 75 | 78 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 4 | SSE 4 | — | — | — | — | S 4 | — | S 6 | S 7 | SSE 6 | SSE 6 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 8 | SE 8 | SE 8 |
| kJ | 18 | 12 | — | — | — | — | 13 | — | 149 | 294 | 299 | 451 | 525 | 691 | 855 | 808 | 627 | 531 | 498 | 610 | 606 | 1132 | 1195 | 1225 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 26 | 12 | 12 | 26 | 26 | 26 | 34 | 34 | 37 | 37 | 37 | 48 | 87 | 48 | 48 | 48 | 42 | 37 | 41 | 41 | 61 | 997 | 42 | 48 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
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