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:
Gansbaai surfForecast / Overberg / South Africa
48hr Weather and Surf, issued 7 pm Wednesday 17 Dec 2025 SASTForecast update in hr min s Forecast update imminent
Gansbaai surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Gansbaai sea temperature is
18.4° C
(Which is 1.0°C colder than average for this time of year)How big are the waves at Gansbaai today?
The current surf forecast for Gansbaai at 12AM is: 1.4m 12s primary swell from a West-southwest direction and 1.4m 9s secondary swell from a South-southeast direction (forecast issued at 07:00pm December 17). The wind direction is predicted to be glassy and the swell rating is 3.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Dec) | 5ft (1.5m) | 9s |
| Afternoon (18 Dec) | 5ft (1.5m) | 8s |
| Evening (18 Dec) | 5ft (1.6m) | 10s |
Table - waves today at Gansbaai. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| 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) (?) | 13 | 13 | 12 | 12 | 9 | 9 | 10 | 8 | 8 | 10 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 12 | 12 | 12 | 12 | 12 | 12 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 980 | 762 | 567 | 528 | 373 | 352 | 307 | 299 | 291 | 582 | 343 | 343 | 293 | 268 | 303 | 314 | 290 | 993 | 1361 | 1562 | 1735 | 2001 | 1450 | 2554 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross | glass | glass | cross- off | cross- off | cross- off | cross- off | cross- off | off | off | off | off | cross- off | cross- off | cross- off | cross- off | off | off | off | off | cross- off | cross- off |
High Tide / height (m) | 2:16AM 1.31 | 2:19PM 1.39 | 2:51AM 1.36 | 2:54PM 1.42 | 3:24AM 1.39 | |||||||||||||||||||
Low Tide / height (m) | 8:09PM 0.29 | 8:18AM 0.40 | 8:42PM 0.25 | 8:53AM 0.36 | 9:15PM 0.21 | 9:27AM 0.33 | ||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 5:24 | - | - | - | - | - | - | - | 5:24 | - | - | - | - | - | - | - | 5:24 | - | - |
| Sunset | 7:52 | - | - | - | - | - | - | - | 7:52 | - | - | - | - | - | - | - | 7:52 | - | - | - | - | - | - | - |
 |  | |  | | | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 18 | 17 | 17 | 17 | 17 | 17 | 18 | 19 | 19 | 17 | 17 | 16 | 16 | 17 | 20 | 21 | 20 | 19 | 18 | 17 | 17 | 19 | 23 | 23 |
| Feels °C (?) | 13 | 13 | 14 | 16 | 16 | 15 | 15 | 15 | 15 | 13 | 15 | 14 | 14 | 15 | 17 | 17 | 16 | 17 | 16 | 15 | 15 | 16 | 19 | 18 |
- 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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