Surf Forecasts:
How big are the waves at Extensions today (14 Sep):
- Morning surf: Morning surf (14 Sep, local time) - 4.5ft (1.3m), 12s period with SW swell.
- Afternoon surf: Afternoon surf (14 Sep, local time) - 3.5ft (1.1m), 12s period with SW swell.
- Evening surf: Evening surf (14 Sep, local time) - 6.5ft (2.0m), 7s period with NW swell.
The current surf forecast for Extensions at 1PM is: 1.1m 12s primary swell from a Southwest direction and 1.6m 6s secondary swell from a North-northwest direction (forecast issued at 07:00am September 14). An open ocean swell of 0.6m 11s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Sep) | 4.5ft (1.3m) | 12s |
| Afternoon (14 Sep) | 3.5ft (1.1m) | 12s |
| Evening (14 Sep) | 6.5ft (2.0m) | 7s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 20mm), heaviest during Tue night. Very mild (max 16°C on Mon morning, min 13°C on Tue night). Mainly near gales. | |||||||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | |||||||||||||||||||||
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 13 | SW 13 | SW 12 | SW 12 | SW 12 | NW 7 | NW 7 | NW 7 | NW 8 | NW 7 | NW 6 | SW 16 | SW 16 | SW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 13 | SW 13 | SSW 13 | WSW 13 | SW 13 | SW 13 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 643 | 504 | 473 | 361 | 312 | 416 | 418 | 340 | 292 | 353 | 390 | 716 | 1194 | 1606 | 3348 | 4574 | 3606 | 3056 | 2567 | 1859 | 1465 | 1116 | 1904 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-on | cross | cross | cross | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross | on | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 4:59PM1.53m | 5:18AM1.36m | 5:29PM1.41m | 5:48AM1.25m | 5:59PM1.27m | ||||||||||||||||||
Low Tide | 10:49AM0.16m | 11:15PM0.17m | 11:18AM0.26m | 11:43PM0.28m | 11:47AM0.38m | ||||||||||||||||||
 |  |  | |  |  | | |  |  | | | | |  | | | | | | |  | | |
 | 6:47 | — | — | — | — | — | — | — | 6:46 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — |
 | — | — | — | — | 6:36 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — |
mm | 1 | 1 | — | — | — | — | — | — | 1 | — | — | — | — | 3 | 9 | 5 | 1 | — | — | — | — | — | — |
Temp °C | 15 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 14 |
Feels °C | 11 | 12 | 12 | 9 | 10 | 10 | 10 | 10 | 11 | 9 | 7 | 6 | 6 | 5 | 11 | 5 | 6 | 5 | 6 | 7 | 6 | 5 | 5 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | 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 | WSW 14 | WSW 14 | WSW 13 | SW 13 | SSW 13 | WSW 13 | SW 13 | SW 13 |
| kJ | 643 | 504 | 473 | 361 | 268 | 268 | 263 | 250 | 198 | 194 | 205 | 589 | 1194 | 1606 | 3348 | 4574 | 3606 | 3056 | 2567 | 1859 | 1465 | 1116 | 1904 |
Swell 2 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 11 | SE 11 | SE 12 | SE 12 | SE 13 | SE 13 | SW 15 | SW 16 | SW 18 | SW 12 | SE 13 | SE 13 | NW 8 | NNW 7 | SW 15 | SW 14 | SW 14 | W 13 | SW 13 | WSW 13 | W 13 |
| kJ | 76 | 49 | 90 | 55 | 68 | 39 | 41 | 27 | 36 | 96 | 192 | 161 | 7 | 7 | 388 | 35 | 424 | 780 | 990 | 1155 | 839 | 888 | 556 |
Swell 3 Height (m) Direction Period (s) | SE 12 | ESE 11 | — | ESE 13 | — | — | — | — | ESE 13 | ESE 13 | ESE 13 | SE 13 | — | — | SE 13 | ESE 13 | ESE 12 | ESE 12 | ESE 11 | ESE 11 | — | — | — |
| kJ | 34 | 48 | — | 16 | — | — | — | — | 17 | 17 | 16 | 7 | — | — | 7 | 33 | 29 | 13 | 13 | 13 | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 5 | NNW 5 | NNW 6 | NNW 6 | NW 6 | NW 7 | NW 7 | NW 7 | NW 8 | NW 7 | NW 6 | NW 7 | NW 7 | WNW 8 | — | — | — | SW 9 | SSW 9 | S 7 | SSE 5 | SSE 6 | SE 6 |
| kJ | 54 | 83 | 107 | 195 | 312 | 416 | 418 | 340 | 292 | 353 | 390 | 716 | 861 | 877 | — | — | — | 727 | 660 | 134 | 83 | 319 | 326 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 35 | 35 | 50 | 155 | 50 | 50 | 50 | 35 | 24 | 155 | 220 | 167 | 220 | 220 | 1 | 187 | 61 | 337 | 337 | 340 | 224 | 224 | 37 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||||
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