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Derde Steen Surf Forecast
/ Cape Town (70 surf breaks) /
Surf Forecasts:
Derde Steen surfForecast / Cape Town / South Africa
48hr Weather and Surf, issued 7 pm Saturday 16 May 2026 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
15.6° C
(Which is 1.5°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 3AM is: 1.5m 13s primary swell from a West-southwest direction and 1.2m 12s secondary swell from a South direction (forecast issued at 07:00pm May 16). The wind direction is predicted to be cross-offshore and the swell rating is 3.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | 4.5ft (1.3m) | 13s |
| Afternoon (17 May) | 4.5ft (1.4m) | 14s |
| Evening (17 May) | 5ft (1.5m) | 13s |
Table - waves today at Derde Steen. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 20°C on Mon afternoon, min 15°C on Sun morning). Winds increasing (light winds from the SE on Sat night, fresh winds from the SE by Tue morning). | ||||||||||||||||||||||||
Sat 16 | Sunday 17 | Monday 18 | Tue 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 | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
WSW 12 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 12 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | S 8 | WSW 13 | S 8 | SSE 8 | SSE 8 | |
1016 | 928 | 799 | 787 | 659 | 659 | 440 | 799 | 743 | 817 | 793 | 837 | 850 | 889 | 969 | 1042 | 929 | 796 | 670 | 755 | 682 | 754 | 807 | 745 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross | |
High Tide | 2:57PM1.53m | 3:08AM1.66m | 3:42PM1.54m | 3:55AM1.62m | 4:28PM1.52m | 4:43AM1.54m | ||||||||||||||||||
Low Tide | 8:59PM0.10m | 9:30AM-0.05m | 9:45PM0.10m | 10:15AM-0.00m | 10:34PM0.14m | 11:02AM0.07m | ||||||||||||||||||
 |  | | | | | | | | |  | | | |  | | | |  | | | | |  | |
 | — | — | — | — | 7:31 | — | — | — | — | — | — | — | 7:31 | — | — | — | — | — | — | — | 7:33 | — | — | — |
 | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | 5:51 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 21 | 19 | 19 | 17 | 16 | 15 | 17 | 18 | 17 | 16 | 16 | 15 | 15 | 15 | 17 | 20 | 19 | 17 | 16 | 17 | 17 | 17 | 18 | 18 |
19 | 17 | 17 | 16 | 15 | 13 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 14 | 16 | 16 | 14 | 13 | 13 | 13 | 12 | 13 | 15 | |
Swell 1 Height (m) Direction Period (s) | WSW 12 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 12 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 13 |
 kJ | 1016 | 928 | 799 | 787 | 659 | 659 | 440 | 799 | 743 | 817 | 793 | 837 | 850 | 889 | 969 | 1042 | 929 | 796 | 640 | 640 | 659 | 536 | 528 | 414 |
Swell 2 Height (m) Direction Period (s) | S 12 | S 12 | S 12 | S 12 | S 11 | S 11 | S 11 | S 11 | — | — | — | S 10 | S 10 | S 10 | S 10 | S 10 | — | — | S 12 | — | S 16 | S 16 | S 16 | S 15 |
| kJ | 547 | 472 | 464 | 454 | 242 | 233 | 185 | 185 | — | — | — | 71 | 49 | 49 | 50 | 32 | — | — | 3 | — | 5 | 5 | 5 | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | W 13 | WSW 15 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | 3 | 193 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | S 5 | S 4 | S 5 | S 11 | S 11 | S 5 | S 5 | S 6 | S 6 | S 6 | S 6 | S 6 | S 6 | S 8 | S 8 | S 8 | S 8 | S 8 | SSE 8 | SSE 8 |
| kJ | — | — | — | — | 28 | 25 | 36 | 448 | 517 | 120 | 129 | 108 | 124 | 118 | 118 | 114 | 253 | 581 | 670 | 755 | 682 | 754 | 807 | 745 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 3 | 0 | 0 | 0 | 0 | 0 | 3 | 126 | 95 | 3 | 3 | 3 | 0 | 0 | 3 | 3 | 3 | 3 | 3 | 126 | 126 | 125 | 125 | 3 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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