Surf Forecasts:
How big are the waves at Extensions today (21 Jul):
- Morning surf: Morning surf (21 Jul, local time) - 8ft (2.4m), 14s period with SSW swell.
- Afternoon surf: Afternoon surf (21 Jul, local time) - 10ft (3.0m), 14s period with SW swell.
- Evening surf: Evening surf (21 Jul, local time) - 8ft (2.5m), 13s period with SW swell.
The current surf forecast for Extensions at 10PM is: 2.5m 13s primary swell from a Southwest direction (forecast issued at 01:00pm July 21). An open ocean swell of 0.4m 11s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 4.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Jul) | 8ft (2.4m) | 14s |
| Afternoon (21 Jul) | 10ft (3.0m) | 14s |
| Evening (21 Jul) | 8ft (2.5m) | 13s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 4mm), mostly falling on Thu morning. Very mild (max 14°C on Tue afternoon, min 12°C on Wed night). Winds increasing (calm on Tue night, strong winds from the N by Thu morning). | |||||||||||||||||||||
Tue 21 | Wednesday 22 | Thursday 23 | |||||||||||||||||||
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 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 | WSW 12 | WSW 12 | SW 11 | SW 11 | SW 11 | SW 12 | SW 18 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2725 | 2886 | 2802 | 2436 | 2114 | 1908 | 1643 | 1500 | 1404 | 1381 | 1298 | 1189 | 1096 | 993 | 1041 | 880 | 1109 | 1034 | 1914 | 8965 | 10063 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | on | cross | cross | cross-off | cross | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross | off | off | cross-off |
High Tide | 8:12AM1.07m | 8:35PM1.19m | 9:19AM1.00m | 9:42PM1.11m | 10:47AM0.97m | ||||||||||||||||
Low Tide | 2:07PM0.50m | 3:13AM0.51m | 3:11PM0.60m | 4:33AM0.55m | 4:45PM0.64m | ||||||||||||||||
 |  | |  |  | | | | | | | | | | | |  |  | | | | |
 | — | — | — | — | — | — | 7:46 | — | — | — | — | — | — | — | 7:46 | — | — | — | — | — | — |
 | — | — | 5:57 | — | — | — | — | — | — | — | 5:58 | — | — | — | — | — | — | — | 5:59 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 | 1 | — | — |
Temp °C | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 14 | 14 | 14 | 14 | 14 | 13 | 12 | 12 | 12 | 13 | 13 | 13 | 14 |
Feels °C | 12 | 13 | 13 | 12 | 12 | 12 | 13 | 10 | 11 | 10 | 9 | 10 | 9 | 7 | 5 | 4 | 6 | 9 | 12 | 12 | 9 |
Swell 1 Height (m) Direction Period (s) | 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 | WSW 12 | WSW 12 | SW 11 | SW 11 | SW 11 | SW 12 | SW 18 | SW 16 |
| kJ | 2725 | 2886 | 2802 | 2436 | 2114 | 1908 | 1643 | 1500 | 1404 | 1381 | 1298 | 1189 | 1096 | 993 | 1041 | 880 | 1109 | 1034 | 1914 | 8965 | 10063 |
Swell 2 Height (m) Direction Period (s) | W 9 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | S 12 | SSW 12 | SSW 12 | WSW 12 | WSW 12 | NNW 5 | SW 19 | WSW 13 | ESE 12 |
| kJ | 40 | 44 | 32 | 31 | 30 | 30 | 18 | 18 | 72 | 165 | 204 | 145 | 383 | 308 | 311 | 226 | 196 | 41 | 1337 | 201 | 57 |
Swell 3 Height (m) Direction Period (s) | SE 11 | W 9 | W 9 | — | — | — | — | — | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 14 | ESE 13 | ESE 13 | ESE 13 | ESE 13 | WSW 12 | ESE 12 | — | — |
| kJ | 43 | 14 | 14 | — | — | — | — | — | 12 | 12 | 12 | 12 | 18 | 18 | 17 | 17 | 17 | 178 | 15 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | WNW 3 | NW 4 | NNW 3 | NW 3 | NNW 4 | NNW 5 | NW 6 | NNW 5 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | 5 | 10 | 7 | 5 | 23 | 48 | 145 | 75 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 1 | 5 | 12 | 0 | 5 | 0 | 1 | 1 | 1 | 1 | 1 | 35 | 35 | 35 | 35 | 35 | 35 | 0 | 0 | 25 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
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