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Surf Forecasts:
Nine Mile Reef surfForecast / Cape Town / South Africa
48hr Weather and Surf, issued 1 pm Monday 20 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
18.9° C
(Which is 1.2°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 10PM is: 2.5m 14s primary swell from a South-southwest direction (forecast issued at 01:00pm April 20). An open ocean swell of 0.8m 4s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 11.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Apr) | 15ft (4.5m) | 14s |
| Afternoon (20 Apr) | 10ft (3.0m) | 14s |
| Evening (20 Apr) | 8ft (2.5m) | 14s |
Table - waves today at Nine Mile Reef. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||||||||
| 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 | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 14 | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 15 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 3420 | 3189 | 2826 | 2844 | 2122 | 1915 | 1622 | 1475 | 1622 | 4892 | 2393 | 2364 | 2665 | 4249 | 6568 | 7180 | 7462 | 7191 | 6742 | 5898 | 5058 | 3869 | 3108 | 2643 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | off | off | off | off | off | cross | cross- on | on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross | cross | cross |
High Tide / height (m) | 5:20PM 1.45 | 5:36AM 1.47 | 6:10PM 1.34 | 6:30AM 1.31 | 7:13PM 1.23 | 7:41AM 1.16 | ||||||||||||||||||
Low Tide / height (m) | 11:09AM 0.07 | 11:24PM 0.21 | 11:55AM 0.20 | 12:17AM 0.34 | 12:51PM 0.34 | 1:27AM 0.47 | ||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 7:11 | - | - | - | - | - | - | - | 7:11 | - | - | - | - | - | - | - | 7:13 |
| Sunset | - | - | 6:15 | - | - | - | - | - | - | - | 6:15 | - | - | - | - | - | - | - | 6:14 | - | - | - | - | - |
 |  |  |  | |  |  | |  | | | | | | | |  | | | | | | | | |
Rain (mm) | 1 | 1 | - | 1 | 1 | - | - | - | - | 3 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 16 | 16 | 17 | 15 | 14 | 14 | 13 | 14 | 15 | 15 | 17 | 17 | 17 | 16 | 15 | 15 | 16 | 18 | 19 | 16 | 14 | 13 | 13 | 14 |
| Feels °C (?) | 10 | 10 | 11 | 11 | 10 | 10 | 9 | 10 | 10 | 12 | 13 | 14 | 13 | 11 | 11 | 11 | 11 | 13 | 14 | 12 | 10 | 10 | 11 | 12 |
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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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