Surf Forecasts:
How big are the waves at Extensions today (18 Jul):
- Morning surf: Morning surf (18 Jul, local time) - 4.5ft (1.4m), 9s period with SW swell.
- Afternoon surf: Afternoon surf (18 Jul, local time) - 3.5ft (1.1m), 13s period with SW swell.
- Evening surf: Evening surf (18 Jul, local time) - 5ft (1.6m), 12s period with SW swell.
The current surf forecast for Extensions at 2AM is: 1.4m 10s primary swell from a Southwest direction and 0.5m 12s secondary swell from a South direction (forecast issued at 07:00pm July 17). The wind direction is predicted to be onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Jul) | 4.5ft (1.4m) | 9s |
| Afternoon (18 Jul) | 3.5ft (1.1m) | 13s |
| Evening (18 Jul) | 5ft (1.6m) | 12s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 2mm), mostly falling on Sun morning. Very mild (max 17°C on Sat afternoon, min 13°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Fri 17 | Saturday 18 | Sunday 19 | |||||||||||||||||
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 10 | SW 10 | SW 10 | SW 10 | SW 9 | SW 9 | SW 9 | SW 9 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 9 | SW 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 626 | 509 | 456 | 369 | 241 | 307 | 328 | 300 | 352 | 812 | 799 | 574 | 689 | 625 | 734 | 798 | 897 | 549 | 1257 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | glassy |
High Tide | 5:38PM1.59m | 5:54AM1.39m | 6:19PM1.52m | 6:36AM1.28m | 7:00PM1.42m | ||||||||||||||
Low Tide | 11:55PM0.16m | 12:00PM0.15m | 00:39AM0.24m | 12:39PM0.27m | |||||||||||||||
 |  | |  | | |  | |  |  | | | | |  | | | | | |
 | — | — | — | — | 7:48 | — | — | — | — | — | — | — | 7:48 | — | — | — | — | — | — |
 | 5:54 | — | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:55 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — |
Temp °C | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 |
Feels °C | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 13 | 13 | 13 | 12 | 12 | 11 | 13 | 11 | 12 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 10 | SW 10 | SW 10 | SW 10 | SW 9 | SW 9 | SW 9 | SW 9 | WSW 9 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 9 | SW 11 |
| kJ | 626 | 509 | 456 | 369 | 241 | 307 | 328 | 300 | 270 | 812 | 799 | 574 | 689 | 625 | 734 | 798 | 897 | 549 | 1257 |
Swell 2 Height (m) Direction Period (s) | S 14 | S 13 | S 13 | S 12 | WSW 10 | S 12 | S 11 | SW 13 | SW 13 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | W 10 | W 10 | SSW 12 | W 10 |
| kJ | 14 | 32 | 55 | 77 | 72 | 178 | 163 | 290 | 352 | 166 | 157 | 284 | 188 | 184 | 181 | 133 | 98 | 501 | 94 |
Swell 3 Height (m) Direction Period (s) | E 11 | SW 17 | SW 16 | SW 16 | S 12 | SW 14 | SW 14 | S 11 | S 11 | S 11 | S 10 | SSE 11 | SSE 11 | SSE 11 | S 10 | SSE 10 | SSW 14 | W 10 | SE 9 |
| kJ | 2 | 11 | 10 | 39 | 106 | 130 | 228 | 110 | 151 | 143 | 100 | 150 | 119 | 117 | 78 | 34 | 105 | 71 | 13 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | NW 2 | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 20 | 3 | 0 | 0 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||
Header Global | |||||||||||||||||||
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