Surf Forecasts:
How big are the waves at Extensions today (17 Oct):
- Afternoon surf: Afternoon surf (17 Oct, local time) - 6ft (1.9m), 11s period with W swell.
- Evening surf: Evening surf (17 Oct, local time) - 5.5ft (1.7m), 10s period with W swell.
The current surf forecast for Extensions at 12AM is: 1.7m 10s primary swell from a West direction and 1.4m 12s secondary swell from a Southwest direction (forecast issued at 07:00pm October 16). The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Oct) | - | - |
| Afternoon (17 Oct) | 6ft (1.9m) | 11s |
| Evening (17 Oct) | 5.5ft (1.7m) | 10s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Short Range ForecastSome drizzle, heaviest during Sat morning. Very mild (max 17°C on Fri night, min 12°C on Sat night). Winds decreasing (fresh winds from the SE on Sat night, light winds from the SW by Mon morning). | |||||||||||||||||||
Fri 16 | Saturday 17 | Sunday 18 | |||||||||||||||||
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) | W 11 | W 10 | W 10 | SW 12 | SW 12 | SW 12 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | WSW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 723 | 663 | 603 | 723 | 946 | 1617 | 2362 | 2419 | 2293 | 2183 | 1978 | 2613 | 2131 | 2744 | 2458 | 2617 | 2576 | 2166 | 2065 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | cross-on | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross |
High Tide | 6:02PM1.13m | 6:40AM1.06m | 6:52PM1.02m | 8:00AM0.98m | 8:30PM0.94m | ||||||||||||||
Low Tide | 00:18AM0.49m | 12:39PM0.61m | 1:16AM0.59m | 2:12PM0.70m | |||||||||||||||
 |  |  | | |  |  | | | | | | | | | | | | | |
 | — | — | — | — | 6:01 | — | — | — | — | — | — | — | 6:01 | — | — | — | — | — | — |
 | 7:00 | — | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:01 | — | — |
mm | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 17 | 17 | 16 | 15 | 15 | 15 | 14 | 13 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 |
Feels °C | 13 | 15 | 15 | 15 | 12 | 10 | 11 | 9 | 7 | 6 | 5 | 6 | 6 | 6 | 7 | 8 | 9 | 9 | 9 |
Swell 1 Height (m) Direction Period (s) | W 11 | W 10 | W 10 | SW 12 | SW 12 | SW 12 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | WSW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 |
| kJ | 723 | 663 | 603 | 723 | 946 | 1617 | 2362 | 2419 | 2293 | 2183 | 1978 | 2613 | 2131 | 2744 | 2458 | 2617 | 2576 | 2166 | 2065 |
Swell 2 Height (m) Direction Period (s) | SW 12 | SW 12 | SW 12 | W 10 | W 10 | W 10 | W 10 | WNW 10 | W 10 | — | WSW 15 | SSW 14 | — | SSW 12 | — | — | — | — | — |
| kJ | 574 | 511 | 555 | 443 | 386 | 327 | 204 | 131 | 17 | — | 584 | 61 | — | 192 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | SE 4 | S 12 | SSE 5 | SE 4 | SSE 5 | S 5 | S 4 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 26 | 600 | 59 | 28 | 50 | 47 | 26 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 20 | 1 | 1 | 1 | 20 | 26 | 26 | 26 | 34 | 48 | 37 | 37 | 33 | 33 | 33 | 26 | 26 | 26 | 26 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||
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