Surf Forecasts:
How big are the waves at Extensions today (23 Jul):
- Morning surf: Morning surf (23 Jul, local time) - 7ft (2.1m), 11s period with SW swell.
- Afternoon surf: Afternoon surf (23 Jul, local time) - 7.5ft (2.3m), 11s period with SW swell.
- Evening surf: Evening surf (23 Jul, local time) - 13ft (4.0m), 17s period with SW swell.
The current surf forecast for Extensions at 4AM is: 1.7m 12s primary swell from a West-southwest direction and 1.0m 12s secondary swell from a South-southwest direction, 1.5m 5s secondary swell from a North-northwest direction (forecast issued at 07:00pm July 22). The wind direction is predicted to be cross-shore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 Jul) | 7ft (2.1m) | 11s |
| Afternoon (23 Jul) | 7.5ft (2.3m) | 11s |
| Evening (23 Jul) | 13ft (4.0m) | 17s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 12mm), heaviest on Thu morning. Very mild (max 17°C on Sat afternoon, min 12°C on Wed night). Winds decreasing (strong winds from the N on Wed night, light winds from the E by Fri morning). | |||||||||||||||||||
Wed 22 | Thursday 23 | Friday 24 | |||||||||||||||||
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 12 | WSW 12 | WSW 12 | WSW 12 | SW 11 | SW 11 | SW 11 | SW 12 | SW 18 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | WSW 14 |
Wave Graph  | |||||||||||||||||||
 kJ | 1209 | 1112 | 934 | 756 | 769 | 897 | 1395 | 1080 | 2142 | 9432 | 10400 | 9305 | 7668 | 6004 | 4968 | 4509 | 3889 | 3301 | 1474 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross | cross | cross | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | cross | cross-off | cross-off | cross-off |
High Tide | 9:42PM1.11m | 10:47AM0.97m | 11:05PM1.08m | 12:11PM1.01m | |||||||||||||||
Low Tide | 3:11PM0.60m | 4:33AM0.55m | 4:45PM0.64m | 5:57AM0.53m | 6:15PM0.61m | ||||||||||||||
 |  |  | | |  |  |  | |  | | | | | | | | | | |
 | — | — | — | — | 7:46 | — | — | — | — | — | — | — | 7:45 | — | — | — | — | — | — |
 | 5:58 | — | — | — | — | — | — | — | 5:59 | — | — | — | — | — | — | — | 5:59 | — | — |
mm | — | — | — | — | — | — | 6 | 5 | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 14 | 13 | 12 | 12 | 13 | 13 | 13 | 13 | 14 | 14 | 13 | 12 | 12 | 12 | 12 | 13 | 13 | 13 |
Feels °C | 9 | 8 | 7 | 4 | 5 | 5 | 10 | 11 | 10 | 7 | 7 | 8 | 7 | 8 | 11 | 10 | 10 | 9 | 8 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 12 | WSW 12 | WSW 12 | WSW 12 | SW 11 | SW 11 | SW 11 | SW 12 | SW 18 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SSW 13 |
| kJ | 1209 | 1112 | 934 | 756 | 769 | 897 | 1395 | 1080 | 2142 | 9432 | 10400 | 9305 | 7668 | 6004 | 4968 | 4509 | 3889 | 3301 | 1366 |
Swell 2 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 12 | S 12 | SSW 12 | WSW 12 | NNW 6 | WSW 12 | SSW 19 | ESE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | WSW 14 |
| kJ | 204 | 145 | 386 | 294 | 293 | 187 | 87 | 241 | 1242 | 58 | 37 | 37 | 37 | 36 | 35 | 6 | 5 | 5 | 1474 |
Swell 3 Height (m) Direction Period (s) | ESE 11 | ESE 11 | ESE 14 | ESE 13 | ESE 13 | ESE 13 | ESE 13 | NNW 5 | ESE 12 | — | — | — | — | — | — | — | — | — | SE 12 |
| kJ | 12 | 12 | 18 | 18 | 17 | 17 | 17 | 39 | 15 | — | — | — | — | — | — | — | — | — | 5 |
Wind waves Height (m) Direction Period (s) | NNW 3 | NNW 4 | NNW 4 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 10 | 25 | 40 | 107 | 130 | 140 | 47 | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 57 | 35 | 35 | 35 | 35 | 224 | 1 | 0 | 12 | 26 | 25 | 12 | 0 | 0 | 0 | 1 | 0 | 12 | 12 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||
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