Surf Forecasts:
How big are the waves at Extensions today (15 Sep):
- Morning surf: Morning surf (15 Sep, local time) - 7ft (2.1m), 7s period with NW swell.
- Afternoon surf: Afternoon surf (15 Sep, local time) - 10ft (3.0m), 7s period with NW swell.
- Evening surf: Evening surf (15 Sep, local time) - 6.5ft (2.0m), 15s period with SW swell.
The current surf forecast for Extensions at 6AM is: 1.7m 7s primary swell from a Northwest direction and 0.9m 11s secondary swell from a Southwest direction, 0.4m 16s secondary swell from a Southwest direction (forecast issued at 01:00am September 15). The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Sep) | 7ft (2.1m) | 7s |
| Afternoon (15 Sep) | 10ft (3.0m) | 7s |
| Evening (15 Sep) | 6.5ft (2.0m) | 15s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 24mm), heaviest during Tue night. Very mild (max 15°C on Tue morning, min 13°C on Tue night). Mainly near gales. | ||||||||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | ||||||||||||||||||||||
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 | 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) | NW 8 | NW 8 | NW 7 | NW 7 | NW 7 | SW 16 | SW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 350 | 318 | 371 | 516 | 844 | 1194 | 1741 | 3682 | 4700 | 3716 | 1110 | 2654 | 1872 | 1316 | 1182 | 1723 | 2207 | 1878 | 1682 | 1444 | 1250 | 1074 | 929 | 882 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 5:18AM1.36m | 5:29PM1.41m | 5:48AM1.25m | 5:59PM1.27m | 6:21AM1.13m | 6:34PM1.13m | ||||||||||||||||||
Low Tide | 11:15PM0.17m | 11:18AM0.26m | 11:43PM0.28m | 11:47AM0.38m | 00:14AM0.41m | 12:18PM0.50m | ||||||||||||||||||
 |  |  |  |  | |  |  |  |  | | | | | | | | | | | | | | | |
 | — | 6:46 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:43 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — |
mm | — | 1 | — | — | — | — | 5 | 13 | 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 14 | 14 | 15 | 14 | 14 |
Feels °C | 11 | 10 | 8 | 5 | 5 | 5 | 6 | 12 | 6 | 5 | 6 | 7 | 7 | 6 | 6 | 5 | 5 | 5 | 4 | 6 | 5 | 5 | 5 | 5 |
Swell 1 Height (m) Direction Period (s) | SW 11 | SW 11 | SW 11 | SW 11 | SW 16 | SW 16 | WNW 8 | WSW 15 | WSW 14 | WSW 14 | SW 9 | WSW 13 | WSW 13 | WSW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 |
| kJ | 250 | 198 | 194 | 205 | 589 | 1194 | 946 | 3682 | 4700 | 3716 | 958 | 2654 | 1872 | 1316 | 1182 | 1723 | 2207 | 1878 | 1682 | 1444 | 1250 | 1074 | 929 | 882 |
Swell 2 Height (m) Direction Period (s) | SE 13 | SW 15 | SW 16 | SW 18 | SW 12 | SE 13 | SW 15 | NW 8 | NNW 7 | SW 15 | WSW 13 | SW 14 | SW 13 | SW 13 | WSW 13 | W 13 | W 12 | W 12 | — | — | — | — | — | — |
| kJ | 27 | 36 | 96 | 246 | 132 | 7 | 1741 | 447 | 51 | 424 | 1110 | 758 | 637 | 839 | 995 | 556 | 365 | 187 | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | ESE 13 | ESE 13 | ESE 13 | ESE 13 | SE 13 | — | SE 13 | SE 13 | SW 15 | NNW 7 | SW 14 | WSW 14 | ESE 11 | ESE 11 | — | — | — | — | — | — | — | — | — | — |
| kJ | 17 | 17 | 17 | 17 | 7 | — | 7 | 7 | 276 | 18 | 780 | 378 | 13 | 12 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 8 | NW 8 | NW 7 | NW 7 | NW 7 | NW 8 | WNW 8 | — | — | — | — | S 7 | S 7 | SSE 7 | SSE 5 | SE 5 | SE 6 | SE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SE 6 | SE 6 |
| kJ | 350 | 318 | 371 | 516 | 844 | 1048 | 541 | — | — | — | — | 131 | 155 | 143 | 59 | 86 | 97 | 154 | 218 | 218 | 254 | 246 | 284 | 278 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 34 | 24 | 167 | 264 | 271 | 167 | 242 | 3 | 187 | 907 | 337 | 315 | 226 | 224 | 281 | 37 | 37 | 37 | 37 | 37 | 187 | 226 | 226 | 37 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
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