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Surf Forecasts:
Nine Mile Reef surfForecast / Cape Town / South Africa
48hr Weather and Surf, issued 7 pm Saturday 16 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: 1.2m 12s primary swell from a South direction and 0.9m 13s secondary swell from a Southwest direction, 0.6m 4s secondary swell from a Southeast direction (forecast issued at 07:00pm May 16). The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | 3.5ft (1.0m) | 11s |
| Afternoon (17 May) | 2.5ft (0.8m) | 15s |
| Evening (17 May) | 2.5ft (0.8m) | 13s |
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 Mon afternoon, min 15°C on Sun morning). Winds increasing (light winds from the SSE on Sat night, fresh winds from the SE by Tue morning). | ||||||||||||||||||||||||
Sat 16 | Sunday 17 | Monday 18 | Tue 19 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
S 12 | S 12 | S 12 | S 12 | S 11 | S 11 | S 11 | WSW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 14 | SW 14 | SW 14 | SW 14 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | |
547 | 547 | 464 | 383 | 289 | 233 | 229 | 272 | 228 | 218 | 257 | 205 | 299 | 327 | 404 | 398 | 308 | 522 | 588 | 606 | 597 | 778 | 898 | 861 | |
Wind (km/h) | ||||||||||||||||||||||||
on | cross-on | cross-on | on | on | on | on | on | 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 | |
High Tide | 2:57PM1.54m | 3:09AM1.68m | 3:42PM1.55m | 3:55AM1.64m | 4:28PM1.53m | 4:43AM1.56m | ||||||||||||||||||
Low Tide | 8:59PM0.11m | 9:31AM-0.04m | 9:45PM0.10m | 10:16AM0.00m | 10:34PM0.15m | 11:02AM0.08m | ||||||||||||||||||
 |  | | | | | | | | |  | | | |  | | |  | | | | |  | | |
 | — | — | — | — | 7:31 | — | — | — | — | — | — | — | 7:31 | — | — | — | — | — | — | — | 7:33 | — | — | — |
 | 5:52 | — | — | — | — | — | — | — | 5:51 | — | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — | 5:50 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 19 | 19 | 18 | 17 | 16 | 15 | 17 | 18 | 17 | 17 | 16 | 15 | 15 | 15 | 18 | 20 | 19 | 17 | 17 | 17 | 17 | 17 | 17 | 18 |
18 | 19 | 17 | 16 | 15 | 13 | 14 | 14 | 14 | 15 | 14 | 13 | 13 | 12 | 14 | 16 | 15 | 13 | 13 | 12 | 12 | 11 | 12 | 15 | |
Swell 1 Height (m) Direction Period (s) | S 12 | S 12 | S 12 | S 12 | S 11 | S 11 | S 11 | S 11 | S 11 | SW 14 | SW 13 | SW 13 | SW 13 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 |
 kJ | 547 | 547 | 464 | 383 | 289 | 233 | 229 | 185 | 146 | 218 | 257 | 205 | 299 | 327 | 404 | 398 | 308 | 246 | 235 | 228 | 246 | 171 | 168 | 136 |
Swell 2 Height (m) Direction Period (s) | SW 12 | SW 11 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 14 | SW 14 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 13 | SSW 9 | S 18 | S 12 | S 17 | S 16 | SSE 16 | SSE 15 | — |
| kJ | 346 | 150 | 245 | 202 | 199 | 134 | 72 | 241 | 228 | 138 | 130 | 71 | 49 | 50 | 31 | 161 | 111 | 6 | 11 | 6 | 5 | 24 | 22 | — |
Swell 3 Height (m) Direction Period (s) | — | SW 14 | — | — | — | SW 10 | WSW 10 | WSW 15 | — | S 13 | S 14 | SW 16 | SSE 13 | SSE 13 | SSE 13 | SSW 15 | — | — | S 18 | S 16 | — | — | — | — |
| kJ | — | 114 | — | — | — | 45 | 37 | 272 | — | 85 | 93 | 90 | 59 | 55 | 55 | 144 | — | — | 6 | 5 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 4 | SE 5 | SE 4 | — | SE 4 | SSE 4 | SSE 4 | SSE 4 | SSE 4 | SSE 5 | SSE 4 | SSE 5 | SSE 6 | SSE 6 | SSE 5 | SSE 5 | SSE 5 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 |
| kJ | 29 | 35 | 12 | — | 12 | 8 | 12 | 23 | 44 | 44 | 42 | 40 | 55 | 58 | 46 | 73 | 125 | 522 | 588 | 606 | 597 | 778 | 898 | 861 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 16 | 12 | 12 | 16 | 16 | 16 | 29 | 165 | 56 | 22 | 22 | 22 | 22 | 22 | 36 | 36 | 36 | 36 | 36 | 165 | 165 | 165 | 165 | 36 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
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