Surf Forecasts:
How big are the waves at Extensions today (17 Jul):
- Morning surf: Morning surf (17 Jul, local time) - 6.5ft (2.0m), 11s period with SW swell.
- Afternoon surf: Afternoon surf (17 Jul, local time) - 6ft (1.8m), 10s period with SW swell.
- Evening surf: Evening surf (17 Jul, local time) - 5ft (1.6m), 10s period with SW swell.
The current surf forecast for Extensions at 1PM is: 1.9m 11s primary swell from a Southwest direction (forecast issued at 07:00am July 17). An open ocean swell of 0.1m 11s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Jul) | 6.5ft (2.0m) | 11s |
| Afternoon (17 Jul) | 6ft (1.8m) | 10s |
| Evening (17 Jul) | 5ft (1.6m) | 10s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Short Range ForecastSome drizzle, heaviest during Sun afternoon. Very mild (max 17°C on Sat afternoon, min 13°C on Sun night). Wind will be generally light. | |||||||||||||||||||||||
Friday 17 | Saturday 18 | Sunday 19 | |||||||||||||||||||||
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 11 | SW 11 | SW 11 | SW 10 | SW 10 | SW 10 | SW 10 | SW 9 | SW 9 | SW 14 | SW 9 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 10 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 1187 | 981 | 835 | 759 | 626 | 509 | 456 | 369 | 241 | 266 | 228 | 328 | 346 | 888 | 730 | 634 | 689 | 678 | 666 | 726 | 676 | 606 | 520 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | glassy | glassy | on | 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 | on | cross | cross-off | cross-off |
High Tide | 5:38PM1.59m | 5:54AM1.39m | 6:19PM1.52m | 6:36AM1.28m | 7:00PM1.42m | ||||||||||||||||||
Low Tide | 11:21AM0.07m | 11:55PM0.16m | 12:00PM0.15m | 00:39AM0.24m | 12:39PM0.27m | ||||||||||||||||||
 |  | |  | | |  | | | | | |  |  | | | | | |  | | | | |
 | 7:48 | — | — | — | — | — | — | — | 7:48 | — | — | — | — | — | — | — | 7:48 | — | — | — | — | — | — |
 | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:55 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 14 |
Feels °C | 15 | 16 | 17 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 15 | 13 | 13 | 12 | 12 | 12 | 13 | 13 | 14 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 11 | SW 11 | SW 11 | SW 10 | SW 10 | SW 10 | SW 10 | SW 9 | SW 9 | SW 9 | SW 9 | SW 9 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 10 |
| kJ | 1187 | 981 | 835 | 759 | 626 | 509 | 456 | 369 | 241 | 266 | 225 | 328 | 266 | 888 | 730 | 634 | 689 | 678 | 666 | 726 | 676 | 606 | 520 |
Swell 2 Height (m) Direction Period (s) | E 12 | E 12 | E 11 | E 11 | S 14 | S 13 | S 13 | S 12 | WSW 10 | S 12 | S 11 | SW 13 | SW 12 | S 10 | W 11 | W 11 | W 11 | W 11 | W 11 | W 10 | W 10 | W 10 | SSW 12 |
| kJ | 3 | 3 | 3 | 2 | 14 | 32 | 55 | 77 | 72 | 178 | 157 | 290 | 346 | 175 | 198 | 191 | 188 | 184 | 181 | 135 | 128 | 98 | 190 |
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 | W 11 | S 10 | S 10 | SSE 10 | SSE 11 | SSE 10 | SSE 10 | S 10 | SSW 13 | W 10 |
| kJ | — | — | — | — | 2 | 11 | 10 | 39 | 106 | 130 | 228 | 112 | 154 | 166 | 123 | 164 | 177 | 150 | 112 | 78 | 49 | 102 | 121 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 5 | 0 | 0 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||||
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