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Surf Forecasts:
Nine Mile Reef surfForecast / Cape Town / South Africa
48hr Weather and Surf, issued 7 pm Sunday 17 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 1AM is: 0.8m 13s primary swell from a Southwest direction and 0.6m 10s secondary swell from a South direction, 0.9m 4s secondary swell from a South-southeast direction (forecast issued at 07:00pm May 17). The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 3ft (0.9m) | 14s |
| Afternoon (18 May) | 3.5ft (1.0m) | 14s |
| Evening (18 May) | 3ft (0.9m) | 13s |
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 Wed afternoon. Warm (max 21°C on Tue afternoon, min 15°C on Sun night). Wind will be generally light. | ||||||||||||||||||||||||
Sun 17 | Monday 18 | Tuesday 19 | Wed 20 | |||||||||||||||||||||
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 | 11 AM | 2 PM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SSE 8 | SSE 8 | SSE 8 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SE 9 | SE 9 | SSE 9 | SSE 9 | SSE 8 | SE 9 | |
228 | 218 | 295 | 205 | 299 | 327 | 404 | 398 | 355 | 290 | 424 | 560 | 650 | 714 | 747 | 536 | 419 | 404 | 539 | 1373 | 395 | 258 | 203 | 828 | |
Wind (km/h) | ||||||||||||||||||||||||
on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-off | glassy | on | |
High Tide | 3:42PM1.55m | 3:55AM1.64m | 4:28PM1.53m | 4:43AM1.56m | 5:17PM1.48m | 5:34AM1.44m | ||||||||||||||||||
Low Tide | 9:45PM0.10m | 10:16AM0.00m | 10:34PM0.15m | 11:02AM0.08m | 11:26PM0.22m | 11:52AM0.19m | ||||||||||||||||||
 |  |  | | | |  | | |  | | | | | | | | | | | | | | | |
 | — | — | — | — | 7:31 | — | — | — | — | — | — | — | 7:33 | — | — | — | — | — | — | — | 7:33 | — | — | — |
 | 5:51 | — | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — | 5:49 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 18 | 17 | 16 | 16 | 15 | 15 | 18 | 20 | 19 | 18 | 17 | 17 | 17 | 17 | 19 | 21 | 21 | 18 | 18 | 17 | 17 | 17 | 19 | 20 |
15 | 15 | 14 | 15 | 13 | 13 | 15 | 17 | 16 | 15 | 14 | 14 | 14 | 14 | 17 | 19 | 19 | 16 | 16 | 16 | 16 | 17 | 19 | 19 | |
Swell 1 Height (m) Direction Period (s) | S 11 | SW 14 | SW 13 | SW 13 | SW 13 | SW 14 | SW 14 | SW 14 | SW 14 | S 8 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SSE 10 | SW 12 | SSE 11 | SSE 11 | SSE 9 |
 kJ | 184 | 218 | 295 | 205 | 299 | 327 | 404 | 398 | 355 | 164 | 235 | 228 | 205 | 176 | 171 | 138 | 136 | 104 | 101 | 460 | 72 | 71 | 50 | 186 |
Swell 2 Height (m) Direction Period (s) | SW 14 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | SSE 13 | S 8 | SW 13 | SSE 12 | S 12 | S 16 | S 16 | S 15 | SSE 15 | SSE 14 | SSE 14 | SSW 9 | SW 12 | SSE 12 | SW 12 | SW 12 | SSE 11 |
| kJ | 228 | 138 | 130 | 71 | 49 | 52 | 31 | 55 | 72 | 290 | 15 | 11 | 5 | 5 | 18 | 21 | 19 | 36 | 8 | 95 | 14 | 51 | 50 | 69 |
Swell 3 Height (m) Direction Period (s) | — | S 13 | S 14 | SSE 13 | SSE 13 | SSE 14 | SSE 13 | S 10 | SSE 13 | SSE 12 | SSE 12 | S 17 | — | — | — | — | SSW 10 | SSW 10 | — | SSW 9 | — | S 17 | SW 16 | SW 12 |
| kJ | — | 85 | 93 | 58 | 59 | 36 | 55 | 17 | 31 | 48 | 29 | 6 | — | — | — | — | 10 | 18 | — | 17 | — | 5 | 10 | 50 |
Wind waves Height (m) Direction Period (s) | SSE 4 | SSE 5 | SSE 5 | SSE 4 | SSE 4 | SE 5 | SE 5 | SSE 5 | SE 6 | SE 5 | SSE 8 | SSE 8 | SSE 8 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SE 9 | SE 9 | SSE 9 | SSE 9 | SSE 8 | SE 9 |
| kJ | 31 | 44 | 33 | 29 | 34 | 43 | 49 | 69 | 97 | 90 | 424 | 560 | 650 | 714 | 747 | 536 | 419 | 404 | 539 | 1373 | 395 | 258 | 203 | 828 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 56 | 22 | 22 | 22 | 22 | 22 | 31 | 31 | 31 | 16 | 31 | 16 | 27 | 30 | 16 | 16 | 16 | 16 | 16 | 16 | 12 | 0 | 0 | 16 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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