Surf Forecasts:
How big are the waves at Extensions today (17 Jun):
- Morning surf: Morning surf (17 Jun, local time) - 5.5ft (1.7m), 13s period with SW swell.
- Afternoon surf: Afternoon surf (17 Jun, local time) - 6ft (1.9m), 13s period with SW swell.
- Evening surf: Evening surf (17 Jun, local time) - 7ft (2.2m), 14s period with SW swell.
The current surf forecast for Extensions at 10AM is: 1.7m 13s primary swell from a Southwest direction and 0.4m 12s secondary swell from a West-southwest direction (forecast issued at 01:00am June 17). An open ocean swell of 1.8m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Jun) | 5.5ft (1.7m) | 13s |
| Afternoon (17 Jun) | 6ft (1.9m) | 13s |
| Evening (17 Jun) | 7ft (2.2m) | 14s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 19°C on Fri afternoon, min 13°C on Wed morning). Winds decreasing (near gales from the SE on Thu night, light winds from the ENE by Fri night). | ||||||||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 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 13 | SW 13 | SW 13 | SW 13 | SSW 14 | SW 14 | SW 13 | SW 13 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | SW 13 | SW 12 | SW 15 | SW 12 | SW 13 | SW 12 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 633 | 1083 | 933 | 1042 | 1164 | 1509 | 1824 | 1565 | 1504 | 2917 | 2959 | 2680 | 2458 | 1884 | 1668 | 1417 | 1306 | 907 | 864 | 646 | 330 | 367 | 560 | 624 |
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 | cross-off | cross-off | cross-off | off | off | off | off | off | off |
High Tide | 4:38AM1.53m | 5:12PM1.53m | 5:28AM1.44m | 6:01PM1.49m | 6:19AM1.34m | 6:52PM1.44m | ||||||||||||||||||
Low Tide | 10:56AM0.05m | 11:25PM0.17m | 11:43AM0.12m | 00:18AM0.24m | 12:30PM0.21m | |||||||||||||||||||
 | |  | | | | | | | | | | | | | | | | | | | | | | |
 | — | 7:50 | — | — | — | — | — | — | — | 7:50 | — | — | — | — | — | — | — | 7:50 | — | — | — | — | — | — |
 | — | — | — | — | — | 5:42 | — | — | — | — | — | — | — | 5:43 | — | — | — | — | — | — | — | 5:43 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 13 | 13 | 13 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 14 | 17 | 19 | 18 | 17 |
Feels °C | 6 | 5 | 6 | 8 | 8 | 8 | 7 | 7 | 9 | 8 | 7 | 7 | 9 | 9 | 7 | 7 | 8 | 5 | 6 | 7 | 11 | 14 | 14 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 13 | SW 13 | SW 13 | SW 13 | SSW 14 | SW 14 | SW 13 | SW 13 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | SW 13 | SW 12 | WSW 12 | SW 12 | SW 13 | SW 12 |
| kJ | 633 | 1083 | 933 | 1042 | 1164 | 1509 | 1824 | 1565 | 1408 | 2917 | 2959 | 2680 | 2458 | 1884 | 1668 | 1417 | 1306 | 907 | 864 | 646 | 322 | 367 | 560 | 624 |
Swell 2 Height (m) Direction Period (s) | SSW 14 | — | SW 12 | SW 12 | SSW 19 | SW 11 | SW 18 | SSW 17 | SW 16 | SW 13 | — | — | — | — | — | SW 20 | SW 20 | SSW 13 | SSW 16 | SW 16 | SW 12 | WSW 12 | WSW 12 | SW 18 |
| kJ | 239 | — | 37 | 72 | 37 | 33 | 388 | 1320 | 1504 | 444 | — | — | — | — | — | 15 | 15 | 219 | 179 | 261 | 330 | 328 | 269 | 49 |
Swell 3 Height (m) Direction Period (s) | — | — | S 22 | — | SSW 19 | SW 20 | — | — | — | — | — | — | — | — | — | — | — | SW 18 | SSW 12 | SW 12 | SW 15 | SW 15 | SW 18 | SW 18 |
| kJ | — | — | 9 | — | 37 | 97 | — | — | — | — | — | — | — | — | — | — | — | 79 | 57 | 37 | 318 | 220 | 50 | 50 |
Wind waves Height (m) Direction Period (s) | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 5 | SE 5 | SE 5 | SE 5 | SE 5 | SE 5 | SSE 6 | SSE 6 | SE 6 | SE 6 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 |
| kJ | 301 | 320 | 297 | 248 | 224 | 252 | 224 | 209 | 133 | 102 | 94 | 77 | 66 | 47 | 87 | 181 | 314 | 326 | 418 | 374 | 314 | 276 | 234 | 158 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 37 | 37 | 30 | 26 | 37 | 37 | 37 | 41 | 33 | 33 | 37 | 37 | 41 | 271 | 37 | 37 | 37 | 37 | 37 | 30 | 25 | 12 | 0 | 0 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
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