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Surf Forecasts:
Nine Mile Reef surfForecast / Cape Town / South Africa
48hr Weather and Surf, issued 1 pm Monday 11 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
17.2° 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 9PM is: 3.0m 13s primary swell from a Southwest direction and 0.2m 10s secondary swell from a East-southeast direction (forecast issued at 01:00pm May 11). An open ocean swell of 1.6m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 11.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 May) | 7.5ft (2.3m) | 11s |
| Afternoon (11 May) | 15ft (4.5m) | 13s |
| Evening (11 May) | 10ft (3.0m) | 13s |
Table - waves today at Nine Mile Reef. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 32mm), heaviest during Mon night. Very mild (max 18°C on Mon afternoon, min 13°C on Wed night). Winds decreasing (near gales from the WNW on Mon afternoon, calm by Thu morning). | ||||||||||||||||||||||||
Mon 11 | Tuesday 12 | Wednesday 13 | Thu 14 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
SSE 9 | WSW 13 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | |
28 | 6425 | 4007 | 3357 | 2873 | 2699 | 3113 | 2982 | 2522 | 2135 | 1768 | 1801 | 1665 | 1805 | 1913 | 1969 | 2216 | 2393 | 2208 | 1968 | 1717 | 1491 | 1183 | 1027 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | on | glassy | glassy | glassy | |
High Tide | 10:55AM1.08m | 11:22PM1.28m | 11:55AM1.19m | 00:11AM1.40m | 12:45PM1.30m | 00:56AM1.52m | ||||||||||||||||||
Low Tide | 4:58PM0.49m | 5:52AM0.40m | 5:54PM0.40m | 6:39AM0.25m | 6:43PM0.31m | 7:22AM0.12m | ||||||||||||||||||
 |  | |  | | |  | | | |  |  |  | | |  |  | | |  | | | |  | |
 | — | — | — | — | — | — | 7:28 | — | — | — | — | — | — | — | 7:28 | — | — | — | — | — | — | — | 7:28 | — |
 | — | — | 5:54 | — | — | — | — | — | — | — | 5:53 | — | — | — | — | — | — | — | 5:53 | — | — | — | — | 5:52 |
11 | 5 | 4 | 2 | 2 | 1 | 8 | 1 | 3 | 2 | 2 | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 17 | 18 | 18 | 17 | 17 | 17 | 16 | 15 | 16 | 18 | 17 | 16 | 15 | 15 | 15 | 15 | 15 | 16 | 15 | 15 | 14 | 13 | 13 | 13 |
8 | 10 | 10 | 11 | 12 | 11 | 12 | 13 | 14 | 13 | 14 | 15 | 13 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | |
Swell 1 Height (m) Direction Period (s) | SSE 13 | SSE 10 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 |
 kJ | 17 | 18 | 4007 | 3357 | 2873 | 2699 | 3113 | 2982 | 2522 | 2135 | 1768 | 1801 | 1665 | 1805 | 1913 | 1969 | 2216 | 2393 | 2208 | 1968 | 1717 | 1491 | 1183 | 1027 |
Swell 2 Height (m) Direction Period (s) | SSE 9 | SE 10 | SE 10 | ESE 10 | — | SE 12 | — | — | — | — | — | — | — | — | — | SE 11 | W 11 | WSW 11 | WSW 12 | WSW 11 | WSW 11 | WSW 11 | SW 20 | SW 19 |
| kJ | 28 | 16 | 16 | 10 | — | 6 | — | — | — | — | — | — | — | — | — | 5 | 1633 | 1412 | 1272 | 927 | 1072 | 828 | 15 | 15 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 20 | SW 19 | SW 19 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 8 | 15 | 15 |
Wind waves Height (m) Direction Period (s) | W 13 | WSW 13 | W 7 | WNW 6 | WNW 5 | WNW 5 | W 12 | W 12 | NW 3 | W 12 | W 4 | W 12 | W 12 | W 12 | W 12 | W 11 | — | — | — | — | — | — | — | — |
| kJ | 5607 | 6425 | 440 | 192 | 106 | 66 | 3637 | 3321 | 6 | 2587 | 21 | 2468 | 2344 | 1990 | 2204 | 1898 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 868 | 976 | 994 | 578 | 1042 | 398 | 320 | 18 | 18 | 300 | 10 | 10 | 10 | 10 | 165 | 165 | 18 | 18 | 18 | 20 | 16 | 12 | 10 | 10 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
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