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Extensions Surf Forecast
/ Cape Town (70 surf breaks) /
Surf Forecasts:
Extensions surfForecast / Cape Town / South Africa
48hr Weather and Surf, issued 7 pm Thursday 16 Apr 2026 SASTForecast update in hr min s Forecast update imminent
Extensions surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Extensions sea temperature is
18.8° C
(Which is slightly warmer than usual)How big are the waves at Extensions today?
The current surf forecast for Extensions at 3AM is: 2.5m 13s primary swell from a Southwest direction and 0.3m 20s secondary swell from a Southwest direction (forecast issued at 07:00pm April 16). The wind direction is predicted to be cross-shore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Apr) | 8ft (2.5m) | 12s |
| Afternoon (17 Apr) | 10ft (3.0m) | 12s |
| Evening (17 Apr) | 10ft (3.0m) | 12s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 16 | Friday 17 | Saturday 18 | Sunday 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 | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 11 | 12 | 12 | 12 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 8 | 8 | 9 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 3183 | 2528 | 2207 | 1942 | 2040 | 1968 | 2307 | 2166 | 1847 | 2369 | 2721 | 2435 | 4339 | 3816 | 2723 | 2288 | 2005 | 2240 | 2402 | 736 | 551 | 1081 | 2032 | 4121 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | cross- on | cross | cross | cross | cross- on | cross- 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 | on |
High Tide / height (m) | 2:39PM 1.53 | 2:50AM 1.71 | 3:17PM 1.57 | 3:28AM 1.73 | 3:56PM 1.57 | 4:08AM 1.69 | ||||||||||||||||||
Low Tide / height (m) | 8:40PM 0.07 | 9:10AM -0.07 | 9:18PM 0.04 | 9:48AM -0.08 | 9:57PM 0.05 | 10:27AM -0.03 | ||||||||||||||||||
Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 7:09 | - | - | - | - | - | - | - | 7:11 | - | - | - | - | - | - | - | 7:11 | - | - |
| Sunset | 6:22 | - | - | - | - | - | - | - | 6:20 | - | - | - | - | - | - | - | 6:19 | - | - | - | - | - | - | - |
 |  | |  | | |  |  |  |  | | | | |  | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | 7 | 12 | 2 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | 1 | 1 | 3 | 3 |
| Temp. °C | 17 | 17 | 17 | 16 | 16 | 16 | 15 | 14 | 16 | 16 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 16 | 16 | 17 | 17 | 17 |
| Feels °C (?) | 13 | 14 | 14 | 12 | 10 | 8 | 11 | 9 | 11 | 9 | 10 | 12 | 12 | 12 | 11 | 10 | 9 | 8 | 8 | 9 | 8 | 8 | 7 | 7 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Extensions surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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