Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Big Bay surfForecast / Cape Town / South Africa
48hr Weather and Surf, issued 7 am Monday 22 Dec 2025 SASTForecast update in hr min s Forecast update imminent
Big Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Big Bay sea temperature is
13.5° C
(Which is 5.7°C colder than average for this time of year)How big are the waves at Big Bay today?
The current surf forecast for Big Bay at 2PM is: 1.1m 11s primary swell from a Southwest direction and 0.9m 9s secondary swell from a South direction (forecast issued at 07:00am December 22). The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (22 Dec) | 3.5ft (1.1m) | 11s |
| Afternoon (22 Dec) | 3.5ft (1.1m) | 11s |
| Evening (22 Dec) | 3.5ft (1.1m) | 10s |
Table - waves today at Big Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 22 | Tuesday 23 | Wednesday 24 | Thu 25 | |||||||||||||||||||||
| 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) (?) | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 303 | 297 | 292 | 263 | 258 | 258 | 189 | 178 | 175 | 125 | 125 | 171 | 125 | 85 | 64 | 55 | 462 | 541 | 468 | 660 | 961 | 846 | 488 | 451 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | glass | cross- on | cross- on | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 4:35PM 1.37 | 5:06AM 1.39 | 5:10PM 1.33 | 5:42AM 1.38 | 5:48PM 1.28 | |||||||||||||||||||
Low Tide / height (m) | 10:35AM 0.31 | 10:49PM 0.19 | 11:10AM 0.33 | 11:22PM 0.22 | 11:49AM 0.35 | 11:57PM 0.26 | ||||||||||||||||||
Monday 22 | Tuesday 23 | Wednesday 24 | Thu 25 | |||||||||||||||||||||
| Sunrise | - | 5:31 | - | - | - | - | - | - | - | 5:31 | - | - | - | - | - | - | - | 5:33 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 7:55 | - | - | - | - | - | - | - | 7:57 | - | - | - | - | - | - | - | 7:57 | - | - | - |
 |  |  | | | | | |  |  | | | | | | | | | | | | | |  | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 20 | 23 | 23 | 24 | 24 | 22 | 21 | 20 | 20 | 20 | 21 | 23 | 22 | 20 | 19 | 19 | 18 | 19 | 23 | 23 | 23 | 22 | 19 | 18 |
| Feels °C (?) | 21 | 25 | 22 | 24 | 25 | 21 | 20 | 20 | 19 | 19 | 19 | 20 | 19 | 17 | 15 | 15 | 16 | 16 | 20 | 18 | 18 | 18 | 17 | 17 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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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 Big Bay 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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