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Surf Forecasts:
Derde Steen surfForecast / Cape Town / South Africa
48hr Weather and Surf, issued 1 pm Wednesday 10 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
13.1° C
(Which is 5.7°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 5PM is: 1.3m 10s primary swell from a Southwest direction and 0.4m 15s secondary swell from a Southwest direction, 1.4m 7s secondary swell from a South direction (forecast issued at 01:00pm December 10). The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (10 Dec) | 5ft (1.6m) | 11s |
| Afternoon (10 Dec) | 4.5ft (1.4m) | 10s |
| Evening (10 Dec) | 4.5ft (1.3m) | 10s |
Table - waves today at Derde Steen. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||||||
| 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) (?) | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 19 | 18 | 18 | 17 | 16 | 16 | 16 | 15 | 14 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 469 | 416 | 377 | 337 | 330 | 490 | 427 | 356 | 301 | 258 | 225 | 166 | 141 | 251 | 481 | 895 | 1165 | 1271 | 1611 | 1822 | 1962 | 5285 | 5472 | 5492 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross | cross- off | cross- off | cross- off | glass | cross- on | on | on | on | cross- on | cross | cross- off | cross | cross- on | cross- on | on | on | on | on | cross- on | on |
High Tide / height (m) | 7:38PM 1.12 | 8:16AM 1.26 | 8:48PM 1.05 | 9:22AM 1.22 | 10:06PM 1.02 | |||||||||||||||||||
Low Tide / height (m) | 1:39PM 0.42 | 1:44AM 0.42 | 2:50PM 0.48 | 2:48AM 0.50 | 4:06PM 0.49 | 4:02AM 0.55 | ||||||||||||||||||
Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 5:28 | - | - | - | - | - | - | - | 5:28 | - | - | - | - | - | - | - | 5:28 |
| Sunset | - | - | 7:49 | - | - | - | - | - | - | - | 7:49 | - | - | - | - | - | - | - | 7:50 | - | - | - | - | - |
 | | |  | | | | |  | | |  |  | | | | |  |  | |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 2 | 1 | - | 1 | 1 | - | - |
| Temp. °C | 24 | 27 | 26 | 24 | 22 | 19 | 18 | 22 | 22 | 21 | 20 | 19 | 18 | 17 | 17 | 19 | 20 | 17 | 18 | 18 | 16 | 17 | 16 | 17 |
| Feels °C (?) | 22 | 23 | 23 | 23 | 20 | 18 | 17 | 22 | 20 | 19 | 18 | 19 | 19 | 16 | 16 | 16 | 14 | 13 | 16 | 15 | 13 | 14 | 13 | 14 |
- 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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