Surf Forecasts:
How big are the waves at Extensions today (17 Oct):
- Morning surf: Morning surf (17 Oct, local time) - 8ft (2.5m), 12s period with SW swell.
- Afternoon surf: Afternoon surf (17 Oct, local time) - 10ft (3.0m), 13s period with SW swell.
- Evening surf: Evening surf (17 Oct, local time) - 10ft (3.0m), 12s period with SW swell.
The current surf forecast for Extensions at 7AM is: 2.2m 12s primary swell from a Southwest direction and 1.3m 10s secondary swell from a West direction (forecast issued at 01:00am October 17). The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Oct) | 8ft (2.5m) | 12s |
| Afternoon (17 Oct) | 10ft (3.0m) | 13s |
| Evening (17 Oct) | 10ft (3.0m) | 12s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Short Range ForecastSome drizzle, heaviest during Sat morning. Very mild (max 15°C on Sat morning, min 12°C on Sat night). Winds decreasing (fresh winds from the SE on Sat night, light winds from the WNW by Mon morning). | ||||||||||||||||||||||||
Saturday 17 | Sunday 18 | Monday 19 | ||||||||||||||||||||||
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) | SW 12 | SW 12 | SW 12 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 723 | 946 | 1591 | 2362 | 2419 | 2293 | 2386 | 2044 | 2904 | 2757 | 2078 | 2702 | 2610 | 2445 | 2283 | 2177 | 1891 | 1632 | 1513 | 1313 | 1130 | 1111 | 986 | 891 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | 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-on | cross-on | cross-on | on | on | on | on | on | on |
High Tide | 6:40AM1.06m | 6:52PM1.02m | 8:00AM0.98m | 8:30PM0.94m | 10:06AM0.99m | 10:36PM0.96m | ||||||||||||||||||
Low Tide | 00:18AM0.49m | 12:39PM0.61m | 1:16AM0.59m | 2:12PM0.70m | 3:10AM0.64m | 4:42PM0.67m | ||||||||||||||||||
 | |  |  | | | | | | | | | | |  | | | |  | | | | | | |
 | — | 6:01 | — | — | — | — | — | — | — | 6:01 | — | — | — | — | — | — | — | 6:00 | — | — | — | — | — | — |
 | — | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:01 | — | — | — | — | — | — | — | 7:01 | — | — |
mm | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 15 | 15 | 14 | 14 | 14 | 12 | 13 | 13 | 13 | 13 | 13 | 12 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 |
Feels °C | 15 | 12 | 10 | 9 | 9 | 8 | 5 | 6 | 5 | 7 | 6 | 7 | 7 | 8 | 9 | 9 | 10 | 10 | 12 | 11 | 10 | 11 | 10 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 12 | SW 12 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 |
| kJ | 723 | 946 | 1591 | 2362 | 2419 | 2293 | 2386 | 2044 | 2904 | 2757 | 2078 | 2702 | 2610 | 2445 | 2283 | 2177 | 1891 | 1632 | 1513 | 1313 | 1130 | 1111 | 986 | 891 |
Swell 2 Height (m) Direction Period (s) | W 10 | W 10 | W 10 | W 10 | WNW 10 | W 10 | — | WSW 15 | — | SSW 12 | SSW 12 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 443 | 386 | 327 | 204 | 131 | 17 | — | 584 | — | 162 | 203 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SSE 4 | — | S 12 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 42 | — | 635 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 1 | 20 | 187 | 26 | 26 | 34 | 37 | 85 | 37 | 33 | 33 | 34 | 26 | 26 | 26 | 26 | 20 | 1 | 1 | 1 | 5 | 3 | 5 | 1 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
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