Surf Forecasts:
How big are the waves at Extensions today (31 Aug):
- Morning surf: Morning surf (31 Aug, local time) - 7ft (2.1m), 12s period with SW swell.
- Afternoon surf: Afternoon surf (31 Aug, local time) - 6.5ft (2.0m), 11s period with SW swell.
- Evening surf: Evening surf (31 Aug, local time) - 6ft (1.9m), 11s period with SW swell.
The current surf forecast for Extensions at 10PM is: 2.0m 11s primary swell from a Southwest direction and 1.2m 13s secondary swell from a Southwest direction (forecast issued at 01:00pm August 31). The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 Aug) | 7ft (2.1m) | 12s |
| Afternoon (31 Aug) | 6.5ft (2.0m) | 11s |
| Evening (31 Aug) | 6ft (1.9m) | 11s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 3mm), mostly falling on Thu morning. Very mild (max 15°C on Tue night, min 12°C on Mon afternoon). Winds increasing (calm on Tue morning, near gales from the SSE by Thu morning). | |||||||||||||||||||||
Mon 31 | Tuesday 1 | Wednesday 2 | |||||||||||||||||||
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 11 | SW 11 | SW 11 | SW 12 | SW 11 | SW 11 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1045 | 911 | 1008 | 892 | 901 | 1562 | 2132 | 2699 | 3112 | 3415 | 4063 | 4292 | 4356 | 4247 | 4207 | 3992 | 3471 | 3122 | 2795 | 2490 | 2207 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-on | glassy | glassy | cross-on | glassy | glassy | cross-on | on | on | cross-on | cross-on | glassy | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-off |
High Tide | 5:03PM1.60m | 5:22AM1.41m | 5:38PM1.52m | 6:00AM1.32m | 6:18PM1.41m | ||||||||||||||||
Low Tide | 10:48AM0.10m | 11:18PM0.11m | 11:22AM0.17m | 11:55PM0.19m | 11:59AM0.27m | ||||||||||||||||
 | | |  | | | | | | | |  | | | | | | | | | | |
 | — | — | — | — | — | — | 7:05 | — | — | — | — | — | — | — | 7:03 | — | — | — | — | — | — |
 | — | — | 6:25 | — | — | — | — | — | — | — | 6:27 | — | — | — | — | — | — | — | 6:28 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 12 | 12 | 13 | 13 | 13 | 12 | 13 | 13 | 13 | 13 | 14 | 14 | 15 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 |
Feels °C | 8 | 9 | 10 | 12 | 12 | 11 | 13 | 13 | 12 | 10 | 11 | 10 | 14 | 14 | 13 | 13 | 12 | 12 | 13 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | WSW 11 | SW 11 | SW 11 | SW 12 | SW 11 | SW 11 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 |
| kJ | 1045 | 911 | 1008 | 892 | 901 | 1562 | 2132 | 2699 | 3112 | 3415 | 4063 | 4292 | 4356 | 4247 | 4207 | 3992 | 3471 | 3122 | 2795 | 2490 | 2207 |
Swell 2 Height (m) Direction Period (s) | — | — | SE 10 | WSW 11 | SW 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 4 | 158 | 494 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | SW 14 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 189 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 26 | 12 | 5 | 0 | 0 | 5 | 0 | 0 | 1 | 1 | 5 | 20 | 5 | 0 | 1 | 0 | 0 | 12 | 0 | 0 | 0 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
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