Surf Forecasts:
How big are the waves at Derde Steen today (20 Sep):
- Afternoon surf: Afternoon surf (20 Sep, local time) - 6ft (1.9m), 13s period with SW swell.
- Evening surf: Evening surf (20 Sep, local time) - 5ft (1.6m), 13s period with WSW swell.
The current surf forecast for Derde Steen at 11PM is: 1.6m 12s primary swell from a West-southwest direction and 0.9m 5s secondary swell from a South-southeast direction (forecast issued at 07:00pm September 20). The wind direction is predicted to be cross-offshore and the swell rating is 3.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Sep) | - | - |
| Afternoon (20 Sep) | 6ft (1.9m) | 13s |
| Evening (20 Sep) | 5ft (1.6m) | 13s |
Table - waves today at Derde Steen. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 2mm), mostly falling on Mon night. Warm (max 28°C on Mon afternoon, min 16°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Sun 20 | Monday 21 | Tuesday 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 | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | SW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 1129 | 876 | 784 | 636 | 554 | 472 | 472 | 429 | 347 | 366 | 283 | 273 | 303 | 342 | 394 | 346 | 409 | 435 | 398 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross-on | cross-off | cross-off | off | off | off | cross-on | on | on | cross-on | glassy |
High Tide | 11:39PM0.99m | 12:26PM1.08m | 00:34AM1.10m | 1:02PM1.21m | |||||||||||||||
Low Tide | 5:47PM0.67m | 6:11AM0.55m | 6:42PM0.56m | 6:52AM0.44m | 7:17PM0.43m | ||||||||||||||
 |  | | | | | | | | | | |  | |  |  | |  | | |
 | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:35 | — | — | — | — | — | — |
 | 6:39 | — | — | — | — | — | — | — | 6:40 | — | — | — | — | — | — | — | 6:42 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 | — | — | — | — |
Temp °C | 26 | 23 | 21 | 19 | 18 | 18 | 24 | 28 | 28 | 25 | 24 | 22 | 21 | 23 | 28 | 21 | 19 | 16 | 17 |
Feels °C | 23 | 22 | 20 | 18 | 17 | 17 | 23 | 26 | 27 | 25 | 24 | 22 | 20 | 23 | 28 | 20 | 19 | 16 | 18 |
Swell 1 Height (m) Direction Period (s) | SW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 11 |
| kJ | 1129 | 876 | 784 | 636 | 554 | 472 | 472 | 429 | 347 | 366 | 283 | 273 | 303 | 342 | 394 | 346 | 409 | 435 | 398 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | S 6 | S 6 | S 6 | SW 15 | S 6 | SW 14 | SW 14 | SW 14 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | S 15 | S 14 |
| kJ | — | — | — | — | — | 71 | 46 | 36 | 57 | 36 | 167 | 198 | 149 | 186 | 133 | 130 | 91 | 4 | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | SW 15 | — | SW 15 | S 6 | S 5 | SSE 7 | S 4 | SE 6 | SSE 5 | — | — | — |
| kJ | — | — | — | — | — | — | — | 35 | — | 106 | 29 | 13 | 15 | 4 | 9 | 3 | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 5 | S 5 | SSE 5 | S 6 | S 6 | SSE 6 | SSE 6 | SSE 6 | S 6 | SSE 6 | SSE 6 | — | — | — | — | — | — | — | SSW 3 |
| kJ | 40 | 31 | 47 | 49 | 62 | 93 | 80 | 64 | 36 | 58 | 52 | — | — | — | — | — | — | — | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 10 | 1 | 0 | 0 | 0 | 0 | 1 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 32 | 32 | 17 | 3 | 0 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||
Header Global | |||||||||||||||||||
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