Surf Forecasts:
How big are the waves at Extensions today (10 Aug):
- Morning surf: Morning surf (10 Aug, local time) - 10ft (3.0m), 11s period with SSW swell.
- Afternoon surf: Afternoon surf (10 Aug, local time) - 5ft (1.5m), 11s period with SW swell.
- Evening surf: Evening surf (10 Aug, local time) - 5ft (1.6m), 14s period with SSW swell.
The current surf forecast for Extensions at 2PM is: 1.5m 11s primary swell from a Southwest direction and 0.8m 13s secondary swell from a South-southwest direction (forecast issued at 07:00am August 10). An open ocean swell of 2.4m 10s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (10 Aug) | 10ft (3.0m) | 11s |
| Afternoon (10 Aug) | 5ft (1.5m) | 11s |
| Evening (10 Aug) | 5ft (1.6m) | 14s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 21°C on Wed afternoon, min 11°C on Tue night). Winds decreasing (near gales from the ESE on Tue afternoon, light winds from the ESE by Wed afternoon). | |||||||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||||||||
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) | SSW 11 | SSW 11 | S 10 | SW 11 | SSW 14 | SSW 14 | SSW 14 | S 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SW 23 | SW 22 | SW 21 | SW 20 | SW 19 | SW 18 | SW 18 | SW 17 | SW 17 | SW 16 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 2034 | 1775 | 882 | 515 | 572 | 975 | 2786 | 3125 | 1561 | 1301 | 876 | 669 | 455 | 1055 | 1542 | 2150 | 2207 | 2339 | 2344 | 2267 | 2375 | 2595 | 2284 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | cross-off | off | off |
High Tide | 1:46PM1.37m | 2:01AM1.45m | 2:32PM1.51m | 2:48AM1.53m | 3:14PM1.62m | ||||||||||||||||||
Low Tide | 7:33AM0.21m | 7:56PM0.25m | 8:20AM0.10m | 8:44PM0.13m | 9:02AM0.02m | 9:28PM0.05m | |||||||||||||||||
 |  | |  | |  | | | | | | | | | | | | | | | | | | |
 | 7:31 | — | — | — | — | — | — | — | 7:30 | — | — | — | — | — | — | — | 7:28 | — | — | — | — | — | — |
 | — | — | — | — | 6:10 | — | — | — | — | — | — | — | 6:12 | — | — | — | — | — | — | — | 6:13 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 14 | 15 | 13 | 12 | 11 | 12 | 13 | 15 | 18 | 21 | 20 | 21 |
Feels °C | 4 | 5 | 4 | 4 | 3 | 3 | 2 | 2 | 2 | 3 | 2 | 4 | 4 | 3 | 4 | 5 | 5 | 7 | 11 | 15 | 17 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | SW 11 | SW 11 | SW 11 | SW 11 | SSW 14 | SSW 10 | SSW 14 | WSW 11 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SW 22 | SW 21 | SW 20 | SW 19 | SW 18 | SW 18 | SW 17 | SW 17 | SW 16 |
| kJ | 1514 | 1256 | 738 | 515 | 572 | 754 | 2786 | 66 | 1561 | 1301 | 876 | 669 | 429 | 329 | 1542 | 2150 | 2207 | 2339 | 2344 | 2267 | 2375 | 2595 | 2284 |
Swell 2 Height (m) Direction Period (s) | — | — | S 18 | SSW 13 | SW 10 | SSW 14 | WSW 11 | WSW 11 | WSW 11 | W 16 | WSW 10 | SW 25 | SW 24 | SW 23 | SSW 11 | SSW 11 | SW 11 | SW 11 | SE 9 | SE 9 | SW 10 | S 10 | SW 21 |
| kJ | — | — | 6 | 229 | 231 | 975 | 101 | 91 | 66 | 5 | 39 | 161 | 455 | 1055 | 251 | 211 | 172 | 137 | 275 | 190 | 64 | 8 | 880 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | WSW 11 | WSW 10 | — | — | — | W 27 | SW 26 | WSW 10 | WSW 10 | WSW 10 | — | — | — | S 10 | SW 10 | SW 10 | S 10 | S 10 | S 10 |
| kJ | — | — | — | — | 115 | 229 | — | — | — | 14 | 27 | 20 | 22 | 20 | — | — | — | 18 | 108 | 85 | 17 | 8 | 8 |
Wind waves Height (m) Direction Period (s) | SSW 11 | SSW 11 | S 10 | SSE 10 | SSE 10 | SE 6 | ESE 6 | S 13 | SE 7 | SE 7 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 9 | SE 9 | ESE 9 | — | SE 8 | SE 8 | SE 8 |
| kJ | 2034 | 1775 | 882 | 1001 | 1086 | 256 | 229 | 3125 | 306 | 392 | 510 | 510 | 595 | 860 | 634 | 505 | 454 | 354 | 873 | — | 160 | 232 | 291 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 48 | 61 | 224 | 187 | 187 | 41 | 41 | 37 | 37 | 37 | 37 | 26 | 27 | 30 | 25 | 26 | 25 | 18 | 0 | 0 | 0 | 18 | 18 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||||
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