Surf Forecasts:
How big are the waves at Nine Mile Reef today (20 Aug):
- Morning surf: Morning surf (20 Aug, local time) - 8ft (2.5m), 14s period with SSW swell.
- Afternoon surf: Afternoon surf (20 Aug, local time) - 7ft (2.1m), 13s period with SSW swell.
- Evening surf: Evening surf (20 Aug, local time) - 6ft (1.8m), 12s period with SSW swell.
The current surf forecast for Nine Mile Reef at 12PM is: 2.3m 13s primary swell from a South-southwest direction (forecast issued at 07:00am August 20). The wind direction is predicted to be onshore and the swell rating is 11.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Aug) | 8ft (2.5m) | 14s |
| Afternoon (20 Aug) | 7ft (2.1m) | 13s |
| Evening (20 Aug) | 6ft (1.8m) | 12s |
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 Thu night). Wind will be generally light. | |||||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||||||||
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 14 | SSW 14 | SSW 13 | SSW 13 | 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 | SSW 11 | SW 11 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 1840 | 2227 | 1949 | 1597 | 1211 | 1080 | 904 | 802 | 701 | 556 | 495 | 524 | 317 | 311 | 444 | 322 | 270 | 346 | 291 | 256 | 365 | 563 | 582 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | glassy | cross-on | cross-on | glassy | off | off | cross-off | cross | cross-on | on |
High Tide | 8:02AM1.00m | 8:28PM1.05m | 9:44AM0.92m | 10:23PM0.99m | 11:56AM0.97m | ||||||||||||||||||
Low Tide | 1:53PM0.63m | 3:15AM0.64m | 3:47PM0.72m | 5:33AM0.63m | 6:08PM0.67m | ||||||||||||||||||
 |  | | | | | | | | | | | | |  | | | | |  |  | | | |
 | 7:18 | — | — | — | — | — | — | — | 7:18 | — | — | — | — | — | — | — | 7:16 | — | — | — | — | — | — |
 | — | — | — | — | 6:17 | — | — | — | — | — | — | — | 6:19 | — | — | — | — | — | — | — | 6:19 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 13 | 15 | 15 | 14 | 13 | 13 | 12 | 11 | 11 | 15 | 18 | 17 | 15 | 14 | 13 | 13 | 12 | 16 | 17 | 16 | 15 | 14 |
Feels °C | 12 | 12 | 12 | 11 | 10 | 10 | 11 | 10 | 9 | 9 | 13 | 16 | 16 | 15 | 14 | 13 | 13 | 10 | 13 | 15 | 15 | 15 | 14 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 13 | SSW 13 | 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 | SSW 11 | SW 11 |
| kJ | 1840 | 2227 | 1949 | 1597 | 1211 | 1080 | 904 | 802 | 701 | 556 | 495 | 524 | 317 | 311 | 444 | 322 | 270 | 346 | 291 | 256 | 365 | 563 | 582 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SSW 12 | — | SSW 11 | SSW 11 | SSW 10 | SSE 5 | WSW 11 | SSW 14 | SSW 14 | WSW 10 | WSW 10 | WSW 11 | W 17 | SW 16 | SW 15 |
| kJ | — | — | — | — | — | — | — | — | 459 | — | 379 | 372 | 310 | 42 | 366 | 38 | 105 | 237 | 198 | 206 | 6 | 10 | 35 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SSW 14 | SSW 14 | — | — | W 17 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 145 | 161 | — | — | 6 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SSE 3 | — | ESE 3 | ESE 3 | ESE 4 | ESE 4 | ESE 3 | SE 4 | SSE 5 | SE 5 | SE 5 | — | — | WNW 3 | NNW 2 | — | — | — | — |
| kJ | — | — | — | — | 3 | — | 6 | 9 | 17 | 8 | 4 | 41 | 26 | 74 | 26 | — | — | 3 | 1 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 16 | 16 | 16 | 21 | 32 | 16 | 16 | 16 | 16 | 16 | 16 | 21 | 21 | 0 | 10 | 10 | 0 | 0 | 0 | 0 | 10 | 10 | 16 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||||
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