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:
Derde Steen surfForecast / Cape Town / South Africa
48hr Weather and Surf, issued 7 pm Friday 19 Dec 2025 SASTForecast update in hr min s Forecast update imminent
Derde Steen surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Derde Steen sea temperature is
15.7° C
(Which is 3.4°C colder than average for this time of year)How big are the waves at Derde Steen today?
The current surf forecast for Derde Steen at 11PM is: 1.6m 12s primary swell from a Southwest direction and 0.5m 10s secondary swell from a West direction, 1.7m 6s secondary swell from a South direction (forecast issued at 07:00pm December 19). The wind direction is predicted to be cross-shore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Dec) | - | - |
| Afternoon (19 Dec) | 2.5ft (0.7m) | 13s |
| Evening (19 Dec) | 6ft (1.9m) | 10s |
Table - waves today at Derde Steen. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | |||||||||||||||||||||
| 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) (?) | 10 | 10 | 12 | 12 | 12 | 12 | 13 | 14 | 14 | 14 | 13 | 13 | 12 | 12 | 12 | 11 | 8 | 8 | 12 | 8 | 11 | 11 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 563 | 681 | 718 | 1135 | 1676 | 1631 | 1958 | 1977 | 1949 | 1710 | 1306 | 1092 | 860 | 514 | 319 | 553 | 355 | 416 | 433 | 320 | 303 | 297 | 292 | 263 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross | cross- off | cross | cross | cross | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- on | cross- on | cross | cross | cross- off | cross- off | off | glass | on | on |
High Tide / height (m) | 2:53PM 1.37 | 3:23AM 1.35 | 3:27PM 1.39 | 3:57AM 1.38 | 4:01PM 1.39 | 4:31AM 1.39 | ||||||||||||||||||
Low Tide / height (m) | 9:13PM 0.19 | 9:27AM 0.31 | 9:45PM 0.18 | 10:00AM 0.30 | 10:17PM 0.18 | 10:35AM 0.31 | ||||||||||||||||||
Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 5:31 | - | - | - | - | - | - | - | 5:31 | - | - | - | - | - | - | - | 5:31 | - | - |
| Sunset | 7:54 | - | - | - | - | - | - | - | 7:54 | - | - | - | - | - | - | - | 7:55 | - | - | - | - | - | - | - |
 |  | | | | | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 21 | 19 | 18 | 17 | 16 | 19 | 25 | 26 | 24 | 23 | 20 | 18 | 17 | 21 | 26 | 29 | 27 | 25 | 22 | 20 | 19 | 22 | 25 | 23 |
| Feels °C (?) | 16 | 14 | 15 | 15 | 14 | 17 | 21 | 22 | 19 | 19 | 18 | 17 | 16 | 20 | 24 | 26 | 25 | 23 | 20 | 20 | 19 | 23 | 24 | 21 |
- 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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