Surf Forecasts:
How big are the waves at Derde Steen today (11 Aug):
- Morning surf: Morning surf (11 Aug, local time) - 7ft (2.1m), 13s period with SSW swell.
- Afternoon surf: Afternoon surf (11 Aug, local time) - 6ft (1.8m), 12s period with SSW swell.
- Evening surf: Evening surf (11 Aug, local time) - 3ft (0.9m), 23s period with WSW swell.
The current surf forecast for Derde Steen at 4AM is: 2.3m 13s primary swell from a South-southwest direction and 0.5m 11s secondary swell from a West-southwest direction (forecast issued at 01:00am August 11). The wind direction is predicted to be cross-offshore and the swell rating is 4.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Aug) | 7ft (2.1m) | 13s |
| Afternoon (11 Aug) | 6ft (1.8m) | 12s |
| Evening (11 Aug) | 3ft (0.9m) | 23s |
Table - waves today at Derde Steen. (Swell directed towards the surf break)
Short Range ForecastSome drizzle, heaviest during Thu morning. Warm (max 25°C on Thu afternoon, min 12°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | ||||||||||||||||||||||
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 | 5 PM | 8 PM | 11 PM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | WSW 23 | WSW 22 | SW 21 | WSW 20 | SW 20 | SW 18 | SW 18 | SW 18 | SW 17 | SW 17 | SW 16 | SW 19 | SW 16 | SW 17 | WSW 17 | WSW 16 | WSW 16 | WSW 16 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 2088 | 1793 | 1465 | 1159 | 872 | 730 | 947 | 1314 | 1850 | 1809 | 1864 | 1922 | 1839 | 1952 | 2293 | 2161 | 2033 | 1845 | 2438 | 3146 | 2796 | 2262 | 2075 | 1957 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | 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 | off | off | cross-off | cross-off | cross-on | off | cross-off |
High Tide | 2:00AM1.45m | 2:32PM1.51m | 2:47AM1.53m | 3:13PM1.62m | 3:29AM1.57m | 3:52PM1.68m | ||||||||||||||||||
Low Tide | 8:19AM0.10m | 8:44PM0.13m | 9:01AM0.02m | 9:27PM0.05m | 9:40AM-0.01m | 10:07PM0.02m | ||||||||||||||||||
 | |  | | | | | | | | | | | |  | | | |  | | | | | | |
 | — | 7:28 | — | — | — | — | — | — | — | 7:28 | — | — | — | — | — | — | — | 7:26 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:13 | — | — | — | — | — | — | — | 6:14 | — | — | — | — | — | — | — | 6:14 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — |
Temp °C | 11 | 11 | 12 | 13 | 16 | 17 | 17 | 15 | 14 | 14 | 13 | 16 | 21 | 21 | 20 | 21 | 20 | 18 | 18 | 21 | 25 | 21 | 19 | 18 |
Feels °C | 7 | 7 | 9 | 9 | 13 | 14 | 14 | 12 | 9 | 9 | 9 | 12 | 18 | 17 | 15 | 16 | 15 | 14 | 14 | 17 | 19 | 19 | 17 | 14 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | S 11 | WSW 22 | SW 21 | WSW 20 | SW 20 | SW 18 | SW 18 | SW 18 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 17 | WSW 17 | WSW 16 | WSW 16 | WSW 16 |
| kJ | 2088 | 1793 | 1465 | 1159 | 872 | 730 | 701 | 1314 | 1850 | 1809 | 1864 | 1922 | 1839 | 1952 | 2293 | 2161 | 2033 | 1715 | 2438 | 3146 | 2796 | 2262 | 2075 | 1957 |
Swell 2 Height (m) Direction Period (s) | WSW 11 | WSW 11 | WSW 10 | WSW 10 | WSW 10 | WSW 24 | WSW 23 | SSE 9 | SSW 11 | S 11 | S 10 | SSW 10 | SSW 10 | SSW 10 | SSE 10 | SW 22 | SW 21 | SW 19 | SW 20 | — | — | NNW 6 | — | — |
| kJ | 76 | 66 | 36 | 42 | 20 | 384 | 947 | 211 | 207 | 281 | 225 | 177 | 149 | 106 | 19 | 382 | 898 | 1845 | 557 | — | — | 15 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | W 27 | SW 26 | SW 25 | WSW 10 | WSW 10 | SSW 11 | SSE 9 | SW 11 | SW 11 | SW 10 | — | SW 10 | — | S 10 | S 10 | — | SE 7 | — | — | — | — | — |
| kJ | — | — | 14 | 27 | 162 | 19 | 19 | 256 | 116 | 172 | 140 | 87 | — | 65 | — | 8 | 8 | — | 36 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SSE 8 | SSE 8 | SSE 8 | — | — | — | — | — | — | — | SE 8 | SE 10 | ESE 3 | — | — | — | — | — | — | — |
| kJ | — | — | — | — | 158 | 300 | 394 | — | — | — | — | — | — | — | 57 | 35 | 6 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 7 | 43 | 17 | 0 | 0 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
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