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) - 2.5ft (0.8m), 10s period with SW swell.
The current surf forecast for Extensions at 12AM is: 2.4m 11s primary swell from a Southwest direction and 0.9m 10s secondary swell from a West direction (forecast issued at 07:00pm July 19). The wind direction is predicted to be cross-shore.
| 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) | 2.5ft (0.8m) | 10s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 16°C on Mon afternoon, min 13°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Sun 19 | Monday 20 | Tuesday 21 | |||||||||||||||||
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 11 | SW 11 | SW 10 | SW 10 | SW 10 | SW 9 | SW 9 | SW 8 | SW 10 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SW 14 | SW 13 | SW 13 | SW 13 |
Wave Graph  | |||||||||||||||||||
 kJ | 924 | 1402 | 1402 | 1156 | 904 | 727 | 471 | 370 | 176 | 125 | 334 | 382 | 665 | 1933 | 2576 | 2931 | 2802 | 2561 | 2235 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross | cross | cross | cross | cross-on | cross-on | on | on | on | cross-on | cross-on | glassy | glassy | cross | cross | cross-off | cross-off |
High Tide | 7:00PM1.42m | 7:21AM1.17m | 7:44PM1.31m | 8:12AM1.07m | 8:35PM1.19m | ||||||||||||||
Low Tide | 1:24AM0.34m | 1:20PM0.39m | 2:13AM0.43m | 2:07PM0.50m | |||||||||||||||
 |  | |  |  |  | | | | | | | | | | | | | | |
 | — | — | — | — | 7:48 | — | — | — | — | — | — | — | 7:47 | — | — | — | — | — | — |
 | 5:55 | — | — | — | — | — | — | — | 5:57 | — | — | — | — | — | — | — | 5:57 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 13 |
Feels °C | 11 | 11 | 11 | 12 | 12 | 11 | 12 | 13 | 13 | 13 | 13 | 14 | 13 | 13 | 13 | 12 | 11 | 10 | 9 |
Swell 1 Height (m) Direction Period (s) | SW 9 | SW 11 | SW 11 | SW 10 | SW 10 | SW 10 | SW 9 | SW 9 | SW 8 | SW 8 | SW 8 | SW 7 | SSW 15 | SSW 14 | SSW 14 | SW 14 | SW 13 | SW 13 | SW 13 |
| kJ | 924 | 1402 | 1402 | 1156 | 904 | 727 | 471 | 370 | 176 | 125 | 113 | 104 | 665 | 1933 | 2576 | 2931 | 2802 | 2561 | 2235 |
Swell 2 Height (m) Direction Period (s) | W 10 | W 10 | W 10 | W 9 | W 10 | W 10 | W 10 | WNW 10 | SW 11 | W 10 | SSW 16 | SSW 16 | SW 7 | W 9 | W 9 | W 9 | SE 11 | SE 11 | SE 11 |
| kJ | 73 | 153 | 194 | 85 | 94 | 68 | 123 | 128 | 147 | 92 | 334 | 382 | 75 | 57 | 39 | 25 | 32 | 31 | 31 |
Swell 3 Height (m) Direction Period (s) | SSE 10 | SSE 10 | SSE 10 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | W 10 | SW 10 | SW 12 | SW 12 | SW 11 | SE 11 | SE 11 | SE 11 | W 9 | — | — |
| kJ | 33 | 32 | 19 | 23 | 24 | 23 | 22 | 13 | 120 | 124 | 120 | 244 | 115 | 61 | 44 | 44 | 14 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | NNW 3 | NNW 3 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | 3 | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 3 | 1 | 24 | 23 | 20 | 23 | 1 | 1 | 20 | 1 | 1 | 1 | 3 | 0 | 0 | 12 | 12 | 12 | 12 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||
Header Global | |||||||||||||||||||
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