Surf Forecasts:
How big are the waves at Nine Mile Reef today (21 Aug):
- Morning surf: Morning surf (21 Aug, local time) - 5ft (1.5m), 11s period with SSW swell.
- Afternoon surf: Afternoon surf (21 Aug, local time) - 5ft (1.5m), 11s period with SSW swell.
- Evening surf: Evening surf (21 Aug, local time) - 4ft (1.2m), 11s period with SSW swell.
The current surf forecast for Nine Mile Reef at 1AM is: 1.6m 12s primary swell from a South-southwest direction and 0.4m 3s secondary swell from a Southeast direction (forecast issued at 07:00pm August 20). The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Aug) | 5ft (1.5m) | 11s |
| Afternoon (21 Aug) | 5ft (1.5m) | 11s |
| Evening (21 Aug) | 4ft (1.2m) | 11s |
Table - waves today at Nine Mile Reef. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 18°C on Fri afternoon, min 11°C on Fri morning). Wind will be generally light. | |||||||||||||||||||
Thu 20 | Friday 21 | Saturday 22 | |||||||||||||||||
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 13 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 10 | SSW 11 | SSW 11 | SSW 11 | SSW 12 | SW 11 | SW 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 1211 | 1039 | 816 | 722 | 658 | 591 | 495 | 524 | 494 | 311 | 444 | 322 | 270 | 346 | 291 | 256 | 378 | 530 | 604 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | glassy | cross-on | cross-on | glassy | off | off | cross-off | cross | glassy | on |
High Tide | 8:28PM1.05m | 9:44AM0.92m | 10:23PM0.99m | 11:56AM0.97m | |||||||||||||||
Low Tide | 3:15AM0.64m | 3:47PM0.72m | 5:33AM0.63m | 6:08PM0.67m | |||||||||||||||
 |  | | | | | | | |  | |  | | | |  | | | | |
 | — | — | — | — | 7:18 | — | — | — | — | — | — | — | 7:16 | — | — | — | — | — | — |
 | 6:17 | — | — | — | — | — | — | — | 6:19 | — | — | — | — | — | — | — | 6:19 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 13 | 12 | 12 | 11 | 15 | 18 | 17 | 15 | 14 | 13 | 13 | 13 | 15 | 17 | 17 | 16 | 15 |
Feels °C | 10 | 11 | 11 | 10 | 10 | 9 | 13 | 16 | 16 | 15 | 14 | 13 | 13 | 11 | 12 | 15 | 16 | 16 | 15 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 10 | SSW 11 | SSW 11 | SSW 11 | SSW 12 | SW 11 | SW 11 |
| kJ | 1211 | 1039 | 816 | 722 | 658 | 591 | 495 | 524 | 494 | 311 | 444 | 322 | 270 | 346 | 291 | 256 | 378 | 530 | 604 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | SSW 12 | — | S 11 | SSW 11 | SSW 10 | SSW 10 | WSW 11 | SSW 14 | SSW 14 | WSW 10 | WSW 10 | WSW 10 | WSW 16 | SW 16 | SW 15 |
| kJ | — | — | — | — | 439 | — | 475 | 372 | 310 | 304 | 366 | 65 | 105 | 216 | 163 | 184 | 27 | 10 | 35 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | SSW 14 | SSW 14 | — | — | W 18 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 161 | 163 | — | — | 6 | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 3 | SE 3 | — | SE 3 | — | SE 4 | ESE 4 | SE 4 | SE 5 | SSE 5 | — | — | — | NW 2 | NNW 2 | NW 3 | NNW 3 | — | — |
| kJ | 3 | 2 | — | 2 | — | 12 | 21 | 28 | 65 | 37 | — | — | — | 1 | 1 | 2 | 1 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 32 | 16 | 16 | 16 | 16 | 12 | 16 | 21 | 21 | 0 | 10 | 10 | 0 | 0 | 0 | 0 | 10 | 0 | 16 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||
Header Global | |||||||||||||||||||
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