Surf Forecasts:
How big are the waves at Nine Mile Reef today (21 Jul):
- Morning surf: Morning surf (21 Jul, local time) - 5.5ft (1.7m), 14s period with SSW swell.
- Afternoon surf: Afternoon surf (21 Jul, local time) - 6ft (1.9m), 14s period with SSW swell.
- Evening surf: Evening surf (21 Jul, local time) - 6ft (1.8m), 13s period with SW swell.
The current surf forecast for Nine Mile Reef at 10PM is: 1.7m 13s primary swell from a South-southwest direction and 0.1m 12s secondary swell from a Southeast direction (forecast issued at 01:00pm July 21). The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Jul) | 5.5ft (1.7m) | 14s |
| Afternoon (21 Jul) | 6ft (1.9m) | 14s |
| Evening (21 Jul) | 6ft (1.8m) | 13s |
Table - waves today at Nine Mile Reef. (Swell directed towards the surf break)
Short Range ForecastSome drizzle, heaviest during Thu afternoon. Very mild (max 15°C on Tue afternoon, min 10°C on Wed night). Wind will be generally light. | |||||||||||||||||||||
Tue 21 | Wednesday 22 | Thursday 23 | |||||||||||||||||||
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 | SW 13 | SSW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SSW 11 | SSW 12 | SSW 12 | SSW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 12 | SSW 18 | SSW 17 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1376 | 1556 | 1303 | 1094 | 904 | 778 | 667 | 607 | 578 | 568 | 433 | 456 | 429 | 472 | 497 | 480 | 497 | 497 | 718 | 3901 | 4845 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | on | on | cross-on | on | glassy | off | cross-off | cross-off | cross-off | off | off | off | off | off | off | off | off | cross-off | cross-on |
High Tide | 8:12AM1.08m | 8:35PM1.21m | 9:19AM1.01m | 9:42PM1.12m | 10:47AM0.98m | ||||||||||||||||
Low Tide | 2:07PM0.51m | 3:13AM0.52m | 3:11PM0.61m | 4:33AM0.56m | 4:45PM0.65m | ||||||||||||||||
 | | |  |  | | | | | | | | | |  |  | |  | | | | |
 | — | — | — | — | — | — | 7:45 | — | — | — | — | — | — | — | 7:43 | — | — | — | — | — | — |
 | — | — | 5:57 | — | — | — | — | — | — | — | 5:58 | — | — | — | — | — | — | — | 5:59 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 13 | 15 | 14 | 13 | 13 | 13 | 12 | 11 | 13 | 15 | 14 | 13 | 12 | 11 | 10 | 11 | 12 | 12 | 13 | 13 | 13 |
Feels °C | 12 | 13 | 12 | 12 | 12 | 12 | 11 | 9 | 11 | 12 | 11 | 11 | 9 | 7 | 5 | 5 | 7 | 8 | 11 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 13 | SW 13 | SSW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SSW 11 | SSW 12 | SSW 12 | SSW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 12 | SSW 18 | SSW 17 |
| kJ | 1376 | 1556 | 1303 | 1094 | 904 | 778 | 667 | 607 | 578 | 568 | 433 | 456 | 429 | 472 | 497 | 480 | 497 | 497 | 718 | 3901 | 4845 |
Swell 2 Height (m) Direction Period (s) | SE 12 | SE 12 | ESE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 11 | SSW 14 | S 14 | S 14 | S 14 | SW 13 | SE 14 | SE 14 | SE 13 | SE 13 | SSW 21 | SSW 20 | SW 12 | SE 12 |
| kJ | 21 | 22 | 14 | 5 | 5 | 5 | 5 | 5 | 66 | 106 | 142 | 134 | 104 | 8 | 7 | 7 | 7 | 44 | 596 | 1610 | 37 |
Swell 3 Height (m) Direction Period (s) | W 9 | W 9 | W 9 | — | — | — | — | — | SE 11 | SE 14 | SE 14 | SE 14 | SE 14 | ESE 11 | SE 13 | — | S 23 | SE 13 | SE 12 | SE 12 | — |
| kJ | 25 | 14 | 14 | — | — | — | — | — | 5 | 8 | 8 | 8 | 8 | 24 | 43 | — | 10 | 7 | 38 | 38 | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | WNW 3 | WNW 3 | NW 3 | NNW 3 | NNW 3 | N 4 | N 4 | N 4 | N 4 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | 4 | 3 | 3 | 3 | 9 | 18 | 27 | 21 | 12 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 10 | 21 | 16 | 16 | 12 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12 | 16 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
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