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Surf Forecasts:
Nine Mile Reef surfForecast / Cape Town / South Africa
48hr Weather and Surf, issued 1 pm Thursday 21 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 normal for this time of year)How big are the waves at Nine Mile Reef today?
The current surf forecast for Nine Mile Reef at 8PM is: 0.4m 20s primary swell from a Southwest direction and 0.4m 7s secondary swell from a South-southeast direction, 0.4m 12s secondary swell from a Southwest direction (forecast issued at 01:00pm May 21). An open ocean swell of 0.3m 3s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 1.5ft (0.5m) | 13s |
| Afternoon (21 May) | 1.5ft (0.5m) | 12s |
| Evening (21 May) | 1.5ft (0.4m) | 19s |
Table - waves today at Nine Mile Reef. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 20°C on Thu afternoon, min 15°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Thu 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
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 | 2 AM | 5 AM | 8 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
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 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SSW 15 | SSW 12 | SW 14 | SW 14 | SW 14 | SW 13 | |
84 | 73 | 60 | 97 | 95 | 157 | 155 | 152 | 179 | 264 | 306 | 291 | 314 | 305 | 297 | 304 | 175 | 241 | 142 | 247 | 476 | 238 | 304 | 205 | |
Wind (km/h) | ||||||||||||||||||||||||
off | cross-off | cross-off | off | off | off | off | off | glassy | glassy | on | on | on | cross-on | cross-on | on | on | on | on | on | glassy | glassy | glassy | on | |
High Tide | 7:12PM1.33m | 7:37AM1.18m | 8:23PM1.28m | 8:56AM1.10m | 9:38PM1.26m | |||||||||||||||||||
Low Tide | 12:48PM0.30m | 1:33AM0.41m | 1:52PM0.40m | 2:54AM0.46m | 3:06PM0.46m | 4:18AM0.46m | ||||||||||||||||||
 | | |  | |  |  |  | | | | | | | | | | | | | | | | | |
 | — | — | — | — | — | — | 7:35 | — | — | — | — | — | — | — | 7:35 | — | — | — | — | — | — | — | 7:35 | — |
 | — | — | 5:47 | — | — | — | — | — | — | — | 5:47 | — | — | — | — | — | — | — | 5:46 | — | — | — | — | 5:46 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 18 | 20 | 18 | 16 | 15 | 15 | 15 | 15 | 16 | 18 | 17 | 16 | 16 | 16 | 16 | 16 | 17 | 19 | 17 | 17 | 17 | 17 | 16 | 16 |
16 | 18 | 17 | 16 | 14 | 14 | 14 | 14 | 16 | 19 | 16 | 15 | 15 | 15 | 15 | 15 | 16 | 17 | 16 | 17 | 17 | 18 | 16 | 15 | |
Swell 1 Height (m) Direction Period (s) | SSE 7 | S 7 | S 7 | SSE 7 | SW 12 | SW 18 | SW 18 | SW 18 | SSW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 8 | SSW 12 | SW 14 | SW 14 | SW 14 | SW 13 |
 kJ | 54 | 38 | 26 | 16 | 50 | 157 | 155 | 152 | 179 | 264 | 306 | 291 | 314 | 305 | 297 | 304 | 175 | 241 | 50 | 247 | 476 | 238 | 304 | 205 |
Swell 2 Height (m) Direction Period (s) | SW 13 | SW 12 | SW 12 | SW 12 | SSE 7 | SW 11 | SW 11 | S 11 | S 6 | S 6 | S 6 | S 6 | S 6 | S 6 | S 6 | S 6 | SW 9 | SW 8 | SW 12 | SW 15 | SSE 6 | SSW 7 | SW 18 | SW 17 |
| kJ | 84 | 73 | 51 | 51 | 15 | 45 | 43 | 35 | 18 | 25 | 35 | 36 | 36 | 26 | 18 | 16 | 73 | 66 | 116 | 104 | 3 | 36 | 78 | 142 |
Swell 3 Height (m) Direction Period (s) | SSE 11 | SSE 11 | SW 20 | SW 20 | SW 19 | S 7 | S 6 | SW 11 | SW 11 | SW 11 | S 10 | S 10 | S 10 | S 9 | S 9 | S 9 | SSE 6 | SSE 6 | SSW 15 | SSE 6 | SSE 13 | SSW 18 | SSE 12 | S 5 |
| kJ | 11 | 12 | 60 | 97 | 95 | 14 | 11 | 43 | 42 | 42 | 8 | 8 | 7 | 7 | 7 | 2 | 11 | 11 | 142 | 7 | 17 | 33 | 15 | 5 |
Wind waves Height (m) Direction Period (s) | — | — | WNW 3 | WNW 3 | WNW 3 | NW 3 | NW 3 | NW 3 | — | — | — | — | — | — | — | — | — | — | SSE 6 | — | SSE 6 | SE 6 | — | SE 5 |
| kJ | — | — | 1 | 2 | 1 | 5 | 3 | 3 | — | — | — | — | — | — | — | — | — | — | 13 | — | 12 | 8 | — | 7 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10 | 16 | 16 | 16 | 10 | 16 | 16 | 22 | 16 | 16 | 0 | 0 | 0 | 16 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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