Surf Forecasts:
How big are the waves at Extensions today (18 Oct):
- Morning surf: Morning surf (18 Oct, local time) - 8ft (2.5m), 13s period with WSW swell.
- Afternoon surf: Afternoon surf (18 Oct, local time) - 10ft (3.0m), 13s period with SW swell.
- Evening surf: Evening surf (18 Oct, local time) - 8ft (2.5m), 13s period with SW swell.
The current surf forecast for Extensions at 3AM is: 3.0m 13s primary swell from a Southwest direction (forecast issued at 07:00pm October 17). An open ocean swell of 0.9m 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 (18 Oct) | 8ft (2.5m) | 13s |
| Afternoon (18 Oct) | 10ft (3.0m) | 13s |
| Evening (18 Oct) | 8ft (2.5m) | 13s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 15°C on Mon afternoon, min 12°C on Sat night). Winds increasing (light winds from the WSW on Mon morning, strong winds from the NW by Tue afternoon). | |||||||||||||||||||
Sat 17 | Sunday 18 | Monday 19 | |||||||||||||||||
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 | WSW 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 | 2397 | 2408 | 1945 | 2904 | 2757 | 2219 | 2660 | 2570 | 2570 | 2283 | 2032 | 1891 | 1632 | 1513 | 1313 | 1208 | 1111 | 898 | 882 |
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 | cross | cross | cross-on | cross-on | cross-on | on | on | on | on | on |
High Tide | 6:52PM1.02m | 8:00AM0.98m | 8:30PM0.94m | 10:06AM0.99m | 10:36PM0.96m | ||||||||||||||
Low Tide | 1:16AM0.59m | 2:12PM0.70m | 3:10AM0.64m | 4:42PM0.67m | |||||||||||||||
 |  | | | | | | |  |  | | | |  | | | | | | |
 | — | — | — | — | 6:01 | — | — | — | — | — | — | — | 6:00 | — | — | — | — | — | — |
 | 7:00 | — | — | — | — | — | — | — | 7:01 | — | — | — | — | — | — | — | 7:01 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 13 | 13 | 13 | 12 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 14 |
Feels °C | 8 | 7 | 7 | 6 | 5 | 6 | 7 | 8 | 8 | 8 | 9 | 10 | 11 | 11 | 11 | 10 | 11 | 11 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 12 | SW 12 | SW 13 | SW 13 | WSW 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 | 2397 | 2408 | 1945 | 2904 | 2757 | 2219 | 2660 | 2570 | 2570 | 2283 | 2032 | 1891 | 1632 | 1513 | 1313 | 1208 | 1111 | 898 | 882 |
Swell 2 Height (m) Direction Period (s) | W 10 | — | WSW 15 | — | SSW 12 | SSW 12 | — | — | — | — | — | — | — | — | — | — | — | E 8 | ESE 8 |
| kJ | 17 | — | 584 | — | 162 | 387 | — | — | — | — | — | — | — | — | — | — | — | 1 | 7 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | SE 4 | — | SSE 4 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 26 | — | 34 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 26 | 34 | 34 | 37 | 33 | 85 | 33 | 26 | 26 | 26 | 26 | 20 | 3 | 1 | 1 | 5 | 5 | 5 | 1 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||
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