Surf Forecasts:
How big are the waves at Extensions today (11 Sep):
- Morning surf: Morning surf (11 Sep, local time) - 6ft (1.9m), 12s period with WSW swell.
- Afternoon surf: Afternoon surf (11 Sep, local time) - 5.5ft (1.7m), 12s period with WSW swell.
- Evening surf: Evening surf (11 Sep, local time) - 5ft (1.5m), 12s period with WSW swell.
The current surf forecast for Extensions at 1PM is: 1.8m 12s primary swell from a West-southwest direction (forecast issued at 07:00am September 11). An open ocean swell of 2.5m 7s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Sep) | 6ft (1.9m) | 12s |
| Afternoon (11 Sep) | 5.5ft (1.7m) | 12s |
| Evening (11 Sep) | 5ft (1.5m) | 12s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 10mm), heaviest on Sun night. Very mild (max 17°C on Sun afternoon, min 14°C on Fri morning). Winds decreasing (near gales from the ESE on Sat afternoon, light winds from the NNE by Sun night). | |||||||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | |||||||||||||||||||||
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 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | SW 14 | SW 14 | SW 15 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 1221 | 1080 | 967 | 816 | 789 | 615 | 475 | 475 | 1064 | 1480 | 2038 | 2421 | 3525 | 3534 | 3185 | 2792 | 2562 | 2111 | 1665 | 1262 | 1119 | 1014 | 827 |
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 | off | cross-off | off | off | cross-off | cross-off | off | cross-off |
High Tide | 3:26PM1.70m | 3:44AM1.55m | 3:58PM1.69m | 4:16AM1.52m | 4:29PM1.63m | ||||||||||||||||||
Low Tide | 9:16AM0.01m | 9:43PM-0.01m | 9:48AM0.03m | 10:15PM0.01m | 10:19AM0.08m | 10:45PM0.07m | |||||||||||||||||
 |  | |  | | |  | | | | |  |  | | | | | | | | |  | | |
 | 6:52 | — | — | — | — | — | — | — | 6:50 | — | — | — | — | — | — | — | 6:48 | — | — | — | — | — | — |
 | — | — | — | — | 6:34 | — | — | — | — | — | — | — | 6:35 | — | — | — | — | — | — | — | 6:35 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | 1 | 2 | 2 |
Temp °C | 14 | 15 | 14 | 14 | 15 | 15 | 14 | 15 | 15 | 15 | 15 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 17 | 17 | 17 | 17 |
Feels °C | 5 | 6 | 5 | 4 | 5 | 6 | 5 | 6 | 6 | 6 | 5 | 3 | 5 | 5 | 6 | 8 | 7 | 9 | 11 | 12 | 12 | 13 | 16 |
Swell 1 Height (m) Direction Period (s) | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | SW 14 | SW 14 | SW 15 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SE 9 |
| kJ | 1221 | 1080 | 967 | 816 | 789 | 615 | 475 | 475 | 1064 | 1480 | 2038 | 2421 | 3525 | 3534 | 3185 | 2792 | 2562 | 2111 | 1665 | 1262 | 1119 | 1014 | 542 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | SW 15 | SSW 10 | SW 14 | WSW 12 | — | — | SW 18 | — | — | — | — | — | — | — | — | — | — | SW 13 |
| kJ | — | — | — | — | — | 75 | 56 | 289 | 29 | — | — | 735 | — | — | — | — | — | — | — | — | — | — | 827 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | SW 15 | SW 15 | SW 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SSE 12 |
| kJ | — | — | — | — | — | 75 | 104 | 26 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 94 |
Wind waves Height (m) Direction Period (s) | SSE 6 | SSE 7 | SSE 7 | SSE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 8 | SE 7 | SE 7 | SE 7 | SE 7 | SE 8 | SE 8 | SE 8 | SE 8 | SE 9 | SE 9 | — |
| kJ | 386 | 431 | 533 | 677 | 798 | 808 | 808 | 742 | 612 | 651 | 930 | 975 | 861 | 735 | 735 | 696 | 502 | 555 | 625 | 665 | 846 | 781 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 61 | 48 | 48 | 400 | 400 | 61 | 48 | 48 | 41 | 42 | 61 | 61 | 51 | 37 | 37 | 30 | 37 | 26 | 25 | 25 | 25 | 25 | 25 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||||
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