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Surf Forecasts:
Nine Mile Reef surfForecast / Cape Town / South Africa
48hr Weather and Surf, issued 1 am Wednesday 20 May 2026 SASTForecast update in hr min s Forecast update imminent
Nine Mile Reef surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Nine Mile Reef sea temperature is
16.6° C
(Which is slightly cooler than normal)How big are the waves at Nine Mile Reef today?
The current surf forecast for Nine Mile Reef at 5AM is: 1.6m 8s primary swell from a Southeast direction and 0.4m 12s secondary swell from a Southwest direction, 0.4m 12s secondary swell from a South-southeast direction (forecast issued at 01:00am May 20). The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | 4.5ft (1.3m) | 8s |
| Afternoon (20 May) | 7ft (2.2m) | 9s |
| Evening (20 May) | 6ft (1.8m) | 8s |
Table - waves today at Nine Mile Reef. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastSome drizzle, heaviest during Fri afternoon. Warm (max 21°C on Wed afternoon, min 15°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 22 | ||||||||||||||||||||||
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 |    |    |    | |||||||||||||||||||||
SE 9 | SE 8 | SSE 8 | SE 9 | SE 9 | SE 9 | SE 8 | SE 8 | SSE 11 | SW 13 | SW 13 | SW 13 | SW 12 | SW 20 | SW 20 | SW 19 | SW 18 | SW 18 | SW 18 | SSW 16 | SW 16 | SW 16 | SW 16 | SW 15 | |
449 | 338 | 208 | 745 | 714 | 625 | 479 | 41 | 40 | 88 | 87 | 84 | 74 | 60 | 97 | 95 | 157 | 155 | 152 | 179 | 264 | 261 | 291 | 258 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross | cross | glassy | on | glassy | glassy | glassy | off | off | off | cross-off | cross-off | off | off | off | off | off | off | off | glassy | glassy | on | |
High Tide | 5:34AM1.44m | 6:10PM1.40m | 6:30AM1.31m | 7:12PM1.33m | 7:37AM1.18m | 8:23PM1.28m | ||||||||||||||||||
Low Tide | 11:26PM0.22m | 11:52AM0.19m | 00:24AM0.32m | 12:48PM0.30m | 1:33AM0.41m | 1:52PM0.40m | ||||||||||||||||||
 |  |  | | | |  | | | |  | | | | | | | |  | |  | | | | |
 | — | 7:33 | — | — | — | — | — | — | — | 7:33 | — | — | — | — | — | — | — | 7:35 | — | — | — | — | — | — |
 | — | — | — | — | — | 5:49 | — | — | — | — | — | — | — | 5:47 | — | — | — | — | — | — | — | 5:47 | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | |
Temp °C | 17 | 17 | 16 | 19 | 21 | 20 | 19 | 19 | 18 | 17 | 16 | 18 | 20 | 18 | 16 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 |
16 | 16 | 15 | 19 | 21 | 20 | 19 | 19 | 18 | 16 | 14 | 16 | 18 | 16 | 15 | 14 | 13 | 13 | 13 | 12 | 15 | 16 | 17 | 16 | |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 12 | SSE 12 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | S 7 | S 6 | S 6 | SSE 7 | S 7 | S 7 | S 7 | SSE 7 | SW 12 | SW 18 | SW 18 | SW 18 | SSW 16 | SW 16 | SW 7 | SSW 7 | SSW 7 |
 kJ | 74 | 52 | 77 | 165 | 133 | 116 | 88 | 35 | 29 | 30 | 55 | 38 | 24 | 26 | 17 | 50 | 157 | 155 | 152 | 179 | 264 | 44 | 64 | 58 |
Swell 2 Height (m) Direction Period (s) | SSE 12 | SSE 12 | SW 12 | SSE 11 | SSE 11 | SSE 11 | SSE 10 | SE 8 | SE 8 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SSE 7 | SW 11 | SSE 11 | SW 11 | SW 11 | SSW 7 | SW 16 | SW 16 | SW 15 |
| kJ | 14 | 51 | 51 | 71 | 69 | 68 | 43 | 41 | 22 | 88 | 87 | 84 | 74 | 52 | 51 | 16 | 46 | 41 | 43 | 42 | 18 | 261 | 291 | 258 |
Swell 3 Height (m) Direction Period (s) | SSW 9 | — | S 17 | SW 12 | SW 12 | SW 12 | SW 11 | SSE 11 | SSE 11 | SE 8 | SSE 11 | SSE 11 | SSE 11 | SW 20 | SW 20 | SW 19 | SSE 7 | SW 11 | S 11 | SW 7 | SW 11 | SW 10 | ESE 8 | ESE 8 |
| kJ | 8 | — | 5 | 50 | 50 | 35 | 20 | 37 | 40 | 16 | 12 | 12 | 11 | 60 | 97 | 95 | 15 | 43 | 37 | 8 | 42 | 27 | 6 | 6 |
Wind waves Height (m) Direction Period (s) | SE 9 | SE 8 | SSE 8 | SE 9 | SE 9 | SE 9 | SE 8 | — | — | — | — | NNW 2 | NW 2 | WNW 3 | NW 3 | NW 3 | NW 3 | NNW 3 | N 3 | N 3 | NNW 3 | NNW 4 | — | — |
| kJ | 449 | 338 | 208 | 745 | 714 | 625 | 479 | — | — | — | — | 1 | 1 | 1 | 2 | 1 | 2 | 3 | 4 | 5 | 3 | 5 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 16 | 16 | 12 | 12 | 10 | 12 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 22 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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