Surf Forecasts:
How big are the waves at Extensions today (20 Jul):
- Morning surf: Morning surf (20 Jul, local time) - 6ft (1.9m), 10s period with SW swell.
- Afternoon surf: Afternoon surf (20 Jul, local time) - 4.5ft (1.4m), 9s period with SW swell.
- Evening surf: Evening surf (20 Jul, local time) - 3.5ft (1.1m), 8s period with SW swell.
The current surf forecast for Extensions at 7PM is: 1.1m 8s primary swell from a Southwest direction and 0.8m 10s secondary swell from a West direction (forecast issued at 01:00pm July 20). The wind direction is predicted to be onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Jul) | 6ft (1.9m) | 10s |
| Afternoon (20 Jul) | 4.5ft (1.4m) | 9s |
| Evening (20 Jul) | 3.5ft (1.1m) | 8s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Short Range ForecastSome drizzle, heaviest during Mon afternoon. Very mild (max 16°C on Mon afternoon, min 12°C on Wed night). Winds increasing (calm on Tue morning, fresh winds from the N by Wed night). | |||||||||||||||||||||
Mon 20 | Tuesday 21 | Wednesday 22 | |||||||||||||||||||
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 9 | SW 9 | SW 8 | W 10 | SSW 16 | SSW 16 | SSW 15 | SSW 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 | WSW 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 430 | 370 | 176 | 125 | 334 | 382 | 665 | 2025 | 2725 | 3054 | 2802 | 2561 | 2114 | 1908 | 1643 | 1500 | 1381 | 1427 | 1189 | 1200 | 1003 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | on | on | glassy | on | cross-on | glassy | glassy | cross | cross-off | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 7:44PM1.31m | 8:12AM1.07m | 8:35PM1.19m | 9:19AM1.00m | 9:42PM1.11m | ||||||||||||||||
Low Tide | 1:20PM0.39m | 2:13AM0.43m | 2:07PM0.50m | 3:13AM0.51m | 3:11PM0.60m | ||||||||||||||||
 |  |  |  |  | | | | | | | | | | | | | | | | | |
 | — | — | — | — | — | — | 7:47 | — | — | — | — | — | — | — | 7:46 | — | — | — | — | — | — |
 | — | — | 5:57 | — | — | — | — | — | — | — | 5:57 | — | — | — | — | — | — | — | 5:58 | — | — |
mm | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 16 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 |
Feels °C | 10 | 12 | 12 | 13 | 14 | 14 | 14 | 14 | 14 | 13 | 12 | 11 | 10 | 11 | 11 | 11 | 10 | 9 | 9 | 9 | 9 |
Swell 1 Height (m) Direction Period (s) | SW 9 | SW 9 | SW 8 | SW 8 | SW 8 | SSW 7 | SSW 15 | SSW 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 | WSW 12 |
| kJ | 430 | 370 | 176 | 125 | 128 | 93 | 665 | 2025 | 2725 | 3054 | 2802 | 2561 | 2114 | 1908 | 1643 | 1500 | 1381 | 1427 | 1189 | 1200 | 1003 |
Swell 2 Height (m) Direction Period (s) | W 10 | SE 9 | WNW 10 | W 10 | SSW 16 | SSW 16 | SW 7 | W 9 | W 9 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SSW 15 | S 15 | SSW 14 | SSW 14 | SSW 12 |
| kJ | 125 | 13 | 125 | 120 | 334 | 382 | 86 | 40 | 39 | 44 | 32 | 31 | 30 | 30 | 18 | 18 | 72 | 110 | 204 | 145 | 398 |
Swell 3 Height (m) Direction Period (s) | SE 9 | SSE 9 | SW 11 | SW 10 | W 10 | SW 12 | SSW 11 | SE 11 | SE 11 | W 9 | W 9 | — | — | — | — | — | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 14 |
| kJ | 22 | 8 | 147 | 84 | 90 | 244 | 143 | 60 | 43 | 14 | 14 | — | — | — | — | — | 12 | 12 | 12 | 12 | 18 |
Wind waves Height (m) Direction Period (s) | N 3 | WNW 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WNW 3 | NW 3 | NW 3 |
| kJ | 5 | 169 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 4 | 5 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 25 | 1 | 1 | 1 | 0 | 1 | 3 | 0 | 0 | 12 | 0 | 0 | 0 | 12 | 3 | 1 | 1 | 1 | 24 | 26 | 1 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
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