Surf Forecasts:
How big are the waves at Extensions today (13 Sep):
- Morning surf: Morning surf (13 Sep, local time) - 7ft (2.2m), 14s period with SW swell.
- Afternoon surf: Afternoon surf (13 Sep, local time) - 6ft (1.9m), 14s period with SW swell.
- Evening surf: Evening surf (13 Sep, local time) - 5.5ft (1.7m), 13s period with SW swell.
The current surf forecast for Extensions at 5AM is: 2.3m 15s primary swell from a Southwest direction (forecast issued at 01:00am September 13). An open ocean swell of 2.2m 8s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Sep) | 7ft (2.2m) | 14s |
| Afternoon (13 Sep) | 6ft (1.9m) | 14s |
| Evening (13 Sep) | 5.5ft (1.7m) | 13s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 33mm), heaviest during Tue night. Very mild (max 18°C on Sun afternoon, min 12°C on Tue night). Mainly strong winds. | ||||||||||||||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | ||||||||||||||||||||||
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 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | NW 7 | NW 7 | NW 7 | NNW 7 | NW 7 | SW 17 | SW 16 | SW 16 | SW 15 | WSW 15 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 2633 | 2278 | 1983 | 1665 | 1363 | 1208 | 1014 | 827 | 732 | 643 | 496 | 473 | 361 | 349 | 342 | 305 | 296 | 304 | 244 | 297 | 966 | 1420 | 2831 | 4363 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | cross-off | cross-off | off | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross |
High Tide | 4:16AM1.52m | 4:29PM1.63m | 4:47AM1.45m | 4:59PM1.53m | 5:18AM1.36m | 5:29PM1.41m | ||||||||||||||||||
Low Tide | 10:19AM0.08m | 10:45PM0.07m | 10:49AM0.16m | 11:15PM0.17m | 11:18AM0.26m | |||||||||||||||||||
 |  |  | |  | |  | | | | |  | | | |  | | | | | | | |  | |
 | — | 6:48 | — | — | — | — | — | — | — | 6:47 | — | — | — | — | — | — | — | 6:46 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:35 | — | — | — | — | — | — | — | 6:36 | — | — | — | — | — | — | — | 6:37 | — | — |
mm | — | — | — | — | 1 | 3 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 8 |
Temp °C | 15 | 15 | 16 | 17 | 18 | 18 | 17 | 16 | 16 | 15 | 15 | 16 | 17 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 14 |
Feels °C | 8 | 9 | 12 | 15 | 16 | 19 | 17 | 13 | 14 | 12 | 12 | 11 | 11 | 10 | 10 | 9 | 9 | 9 | 10 | 8 | 7 | 8 | 8 | 15 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 16 | SW 16 | SW 15 | WSW 15 |
| kJ | 2633 | 2278 | 1983 | 1665 | 1363 | 1208 | 1014 | 827 | 732 | 643 | 496 | 473 | 361 | 349 | 268 | 263 | 250 | 198 | 165 | 177 | 966 | 1420 | 2831 | 4363 |
Swell 2 Height (m) Direction Period (s) | — | — | — | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 9 | SE 9 | SE 9 | SE 9 | SE 11 | SE 13 | SE 13 | SE 13 | SW 16 | SW 15 | SW 17 | WSW 7 | WSW 7 | SE 13 | SE 13 |
| kJ | — | — | — | 306 | 238 | 192 | 173 | 129 | 98 | 88 | 87 | 50 | 28 | 45 | 42 | 42 | 26 | 61 | 116 | 297 | 31 | 62 | 7 | 7 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SE 11 | SE 12 | — | SE 11 | ESE 12 | SE 13 | — | — | — | ESE 13 | ESE 13 | ESE 13 | SE 13 | SE 13 | — | ESE 13 |
| kJ | — | — | — | — | — | — | — | — | 33 | 49 | — | 33 | 13 | 7 | — | — | — | 16 | 16 | 16 | 7 | 7 | — | 57 |
Wind waves Height (m) Direction Period (s) | SE 8 | SE 8 | SE 8 | SE 9 | SE 9 | — | — | NNW 3 | NNW 4 | NNW 5 | NW 5 | NW 5 | NW 6 | NW 6 | NW 7 | NW 7 | NW 7 | NNW 7 | NW 7 | NW 6 | NW 6 | NW 7 | NW 7 | — |
| kJ | 816 | 619 | 383 | 967 | 766 | — | — | 9 | 28 | 59 | 106 | 115 | 195 | 301 | 342 | 305 | 296 | 304 | 244 | 202 | 341 | 398 | 312 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 37 | 26 | 18 | 0 | 12 | 0 | 0 | 1 | 25 | 30 | 1 | 24 | 337 | 167 | 50 | 35 | 50 | 59 | 59 | 167 | 220 | 220 | 220 | 3 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
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