Surf Forecasts:
How big are the waves at Nine Mile Reef today (20 Jul):
- Morning surf: Morning surf (20 Jul, local time) - 4.5ft (1.3m), 10s period with SW swell.
- Afternoon surf: Afternoon surf (20 Jul, local time) - 3.5ft (1.1m), 9s period with SW swell.
- Evening surf: Evening surf (20 Jul, local time) - 3ft (0.9m), 8s period with SW swell.
The current surf forecast for Nine Mile Reef at 3AM is: 1.5m 10s primary swell from a Southwest direction and 0.3m 10s secondary swell from a South-southeast direction (forecast issued at 07:00pm July 19). An open ocean swell of 0.3m 2s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 3.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Jul) | 4.5ft (1.3m) | 10s |
| Afternoon (20 Jul) | 3.5ft (1.1m) | 9s |
| Evening (20 Jul) | 3ft (0.9m) | 8s |
Table - waves today at Nine Mile Reef. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 17°C on Mon afternoon, min 11°C on Wed morning). Wind will be generally light. | |||||||||||||||||||
Sun 19 | Monday 20 | Tuesday 21 | |||||||||||||||||
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 9 | SW 11 | SW 11 | SW 11 | SW 10 | SW 10 | SW 9 | SW 9 | SW 8 | SW 8 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 |
Wave Graph  | |||||||||||||||||||
 kJ | 419 | 584 | 558 | 548 | 412 | 322 | 246 | 206 | 118 | 99 | 206 | 259 | 381 | 996 | 1376 | 1556 | 1303 | 1198 | 904 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | off | off | off | off | cross-off | cross-off | off | glassy | glassy | glassy | glassy | glassy | on | on | on | cross-on |
High Tide | 7:00PM1.43m | 7:21AM1.18m | 7:44PM1.32m | 8:12AM1.08m | 8:35PM1.21m | ||||||||||||||
Low Tide | 1:24AM0.34m | 1:19PM0.39m | 2:13AM0.44m | 2:07PM0.51m | |||||||||||||||
 |  | | | |  | | | | | | | | | | | | |  | |
 | — | — | — | — | 7:46 | — | — | — | — | — | — | — | 7:46 | — | — | — | — | — | — |
 | 5:55 | — | — | — | — | — | — | — | 5:57 | — | — | — | — | — | — | — | 5:57 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 14 | 14 | 13 | 13 | 12 | 14 | 17 | 16 | 14 | 13 | 13 | 13 | 12 | 14 | 15 | 14 | 13 | 13 |
Feels °C | 13 | 12 | 11 | 10 | 10 | 9 | 11 | 15 | 13 | 12 | 12 | 12 | 12 | 11 | 13 | 13 | 11 | 11 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 9 | SW 11 | SW 11 | SW 11 | SW 10 | SW 10 | SW 9 | SW 9 | SW 8 | SW 8 | SW 8 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 |
| kJ | 419 | 584 | 558 | 548 | 412 | 322 | 246 | 206 | 118 | 98 | 62 | 259 | 381 | 996 | 1376 | 1556 | 1303 | 1198 | 904 |
Swell 2 Height (m) Direction Period (s) | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSW 10 | SSW 12 | SSW 16 | SW 7 | SSW 7 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 |
| kJ | 33 | 19 | 19 | 18 | 17 | 8 | 8 | 8 | 72 | 94 | 206 | 56 | 46 | 21 | 21 | 22 | 5 | 5 | 5 |
Swell 3 Height (m) Direction Period (s) | SSE 9 | SE 9 | SE 9 | SE 10 | SE 10 | SE 9 | SE 9 | SSW 18 | SSW 18 | SSW 17 | SSW 12 | SW 12 | SSW 11 | W 9 | W 9 | W 9 | W 9 | — | — |
| kJ | 8 | 3 | 3 | 4 | 4 | 14 | 3 | 33 | 31 | 99 | 56 | 68 | 78 | 39 | 25 | 14 | 14 | — | — |
Wind waves Height (m) Direction Period (s) | N 4 | — | NNW 2 | N 3 | — | N 2 | — | WNW 10 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 1 | — | 1 | 1 | — | 1 | — | 128 | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 27 | 21 | 16 | 12 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Live Wave Height (m)
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Surf Rating (10 Max)
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