Surf Forecasts:
How big are the waves at Extensions today (10 Sep):
- Afternoon surf: Afternoon surf (10 Sep, local time) - 8ft (2.5m), 14s period with WSW swell.
- Evening surf: Evening surf (10 Sep, local time) - 7.5ft (2.3m), 13s period with WSW swell.
The current surf forecast for Extensions at 11PM is: 2.1m 13s primary swell from a West-southwest direction (forecast issued at 07:00pm September 10). An open ocean swell of 1.2m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (10 Sep) | - | - |
| Afternoon (10 Sep) | 8ft (2.5m) | 14s |
| Evening (10 Sep) | 7.5ft (2.3m) | 13s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 18°C on Sun afternoon, min 14°C on Thu night). Winds increasing (moderate winds from the SSE on Thu night, near gales from the SE by Fri afternoon). | |||||||||||||||||||
Thu 10 | Friday 11 | Saturday 12 | |||||||||||||||||
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 13 | WSW 13 | WSW 13 | WSW 13 | 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 |
Wave Graph  | |||||||||||||||||||
 kJ | 1859 | 1803 | 1528 | 1383 | 1278 | 1237 | 967 | 816 | 710 | 615 | 475 | 475 | 1064 | 1480 | 2038 | 2421 | 3525 | 3353 | 3185 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | 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 | cross-off | cross-off | cross-off |
High Tide | 2:52PM1.66m | 3:10AM1.55m | 3:26PM1.70m | 3:44AM1.55m | 3:58PM1.69m | ||||||||||||||
Low Tide | 9:09PM0.01m | 9:16AM0.01m | 9:43PM-0.01m | 9:48AM0.03m | 10:15PM0.01m | ||||||||||||||
 |  | |  | | | |  | | | | | | | | | | | | |
 | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:50 | — | — | — | — | — | — |
 | 6:32 | — | — | — | — | — | — | — | 6:34 | — | — | — | — | — | — | — | 6:35 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 15 |
Feels °C | 14 | 13 | 9 | 8 | 5 | 5 | 5 | 4 | 4 | 4 | 5 | 7 | 8 | 8 | 7 | 8 | 7 | 7 | 5 |
Swell 1 Height (m) Direction Period (s) | WSW 13 | WSW 13 | WSW 13 | WSW 13 | 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 |
| kJ | 1859 | 1803 | 1528 | 1383 | 1278 | 1237 | 967 | 816 | 710 | 615 | 475 | 475 | 1064 | 1480 | 2038 | 2421 | 3525 | 3353 | 3185 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SW 15 | SW 15 | SW 14 | WSW 12 | SSW 9 | — | SW 18 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | 75 | 104 | 289 | 29 | 59 | — | 735 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SW 15 | S 10 | SSW 10 | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | 75 | 52 | 42 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | S 4 | S 5 | S 6 | SSE 6 | SSE 6 | SSE 7 | SSE 7 | SSE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 8 | SE 8 | SE 8 | SE 8 |
| kJ | — | 16 | 63 | 235 | 350 | 414 | 569 | 697 | 788 | 773 | 773 | 677 | 647 | 481 | 689 | 891 | 1225 | 1422 | 1190 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 26 | 34 | 87 | 61 | 61 | 48 | 48 | 400 | 400 | 61 | 61 | 37 | 37 | 37 | 48 | 41 | 48 | 37 | 37 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||
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