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Surf Forecasts:
Nine Mile Reef surfForecast / Cape Town / South Africa
48hr Weather and Surf, issued 7 am Saturday 18 Apr 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
19.2° C
(Which is 1.4°C warmer than 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 12PM is: 2.1m 11s primary swell from a South-southwest direction and 0.8m 14s secondary swell from a South-southwest direction (forecast issued at 07:00am April 18). An open ocean swell of 0.8m 4s 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 (18 Apr) | 7ft (2.2m) | 11s |
| Afternoon (18 Apr) | 6ft (1.9m) | 11s |
| Evening (18 Apr) | 3.5ft (1.1m) | 10s |
Table - waves today at Nine Mile Reef. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 18 | Sunday 19 | Monday 20 | Tue 21 | |||||||||||||||||||||
| 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 | 2 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 11 | 11 | 11 | 11 | 10 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 12 | 12 | 12 | 14 | 14 | 14 | 14 | 14 | 14 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1550 | 1398 | 1043 | 862 | 338 | 281 | 230 | 230 | 197 | 186 | 503 | 731 | 1730 | 1746 | 2037 | 1903 | 4527 | 8018 | 2923 | 2803 | 2651 | 2344 | 2064 | 1887 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | off | cross- off | cross- off | cross- off | off | off | off | off | off | cross- off | cross- off | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | off |
High Tide / height (m) | 3:28AM 1.75 | 3:56PM 1.59 | 4:07AM 1.71 | 4:36PM 1.54 | 4:50AM 1.61 | 5:20PM 1.45 | ||||||||||||||||||
Low Tide / height (m) | 9:47AM -0.08 | 9:57PM 0.05 | 10:27AM -0.03 | 10:38PM 0.11 | 11:09AM 0.07 | 11:24PM 0.21 | ||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tue 21 | |||||||||||||||||||||
| Sunrise | - | 7:09 | - | - | - | - | - | - | - | 7:09 | - | - | - | - | - | - | - | 7:11 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:19 | - | - | - | - | - | - | - | 6:16 | - | - | - | - | - | - | - | 6:15 | - | - | - |
 |  |  | | |  |  | | |  |  |  | |  | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 2 | 4 | 3 | 2 | 1 | 2 | 2 | 1 | 1 | - | - | 1 | 1 | - |
| Temp. °C | 15 | 15 | 16 | 18 | 17 | 16 | 15 | 14 | 14 | 14 | 16 | 16 | 15 | 14 | 13 | 13 | 13 | 13 | 16 | 16 | 15 | 16 | 15 | 14 |
| Feels °C (?) | 12 | 11 | 11 | 11 | 10 | 10 | 11 | 10 | 9 | 7 | 8 | 7 | 6 | 5 | 5 | 6 | 7 | 9 | 10 | 9 | 9 | 11 | 11 | 10 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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