Surf Forecasts:
How big are the waves at Derde Steen today (12 Sep):
- Morning surf: Morning surf (12 Sep, local time) - 6ft (1.8m), 14s period with SW swell.
- Afternoon surf: Afternoon surf (12 Sep, local time) - 7ft (2.2m), 15s period with SW swell.
- Evening surf: Evening surf (12 Sep, local time) - 8ft (2.4m), 16s period with SW swell.
The current surf forecast for Derde Steen at 5AM is: 1.2m 14s primary swell from a Southwest direction and 0.9m 12s secondary swell from a West-southwest direction, 1.6m 8s secondary swell from a South direction (forecast issued at 01:00am September 12). The wind direction is predicted to be cross-offshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Sep) | 6ft (1.8m) | 14s |
| Afternoon (12 Sep) | 7ft (2.2m) | 15s |
| Evening (12 Sep) | 8ft (2.4m) | 16s |
Table - waves today at Derde Steen. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 7mm), mostly falling on Mon morning. Warm (max 23°C on Sun afternoon, min 14°C on Mon night). Winds increasing (light winds from the NNE on Sun night, fresh winds from the NW by Mon afternoon). | ||||||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||||||||||
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) | WSW 12 | SW 14 | SW 14 | SW 14 | SW 15 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | NW 7 | NW 8 | SW 12 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 407 | 565 | 1170 | 1500 | 1850 | 3059 | 2875 | 2768 | 2650 | 2010 | 1736 | 1463 | 1186 | 1029 | 933 | 755 | 663 | 581 | 563 | 430 | 361 | 382 | 496 | 309 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-off | cross | cross-off | cross-off | cross-off | cross | cross | cross | cross-off | cross-off |
High Tide | 3:44AM1.55m | 3:58PM1.68m | 4:17AM1.52m | 4:29PM1.62m | 4:48AM1.45m | 4:59PM1.52m | ||||||||||||||||||
Low Tide | 9:48AM0.03m | 10:15PM0.01m | 10:19AM0.08m | 10:45PM0.07m | 10:49AM0.16m | |||||||||||||||||||
 | |  | | |  | | | | | | | |  |  |  | | | |  | | | | | |
 | — | 6:50 | — | — | — | — | — | — | — | 6:48 | — | — | — | — | — | — | — | 6:47 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:35 | — | — | — | — | — | — | — | 6:36 | — | — | — | — | — | — | — | 6:36 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 | — | 1 | 3 | — | — | — | — | — |
Temp °C | 15 | 16 | 17 | 19 | 19 | 19 | 16 | 15 | 16 | 16 | 16 | 20 | 23 | 21 | 19 | 16 | 15 | 15 | 15 | 18 | 18 | 17 | 15 | 14 |
Feels °C | 13 | 14 | 15 | 17 | 15 | 14 | 12 | 12 | 15 | 14 | 14 | 18 | 22 | 20 | 19 | 15 | 15 | 13 | 13 | 13 | 12 | 11 | 10 | 10 |
Swell 1 Height (m) Direction Period (s) | WSW 12 | SW 14 | SW 14 | SW 14 | SW 15 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 |
| kJ | 407 | 565 | 1170 | 1500 | 1850 | 3059 | 2875 | 2768 | 2650 | 2010 | 1736 | 1463 | 1186 | 1029 | 933 | 755 | 663 | 581 | 563 | 430 | 361 | 309 | 263 | 263 |
Swell 2 Height (m) Direction Period (s) | SW 15 | WSW 12 | S 9 | — | SW 18 | — | — | SSE 8 | SSE 7 | SSE 9 | SSE 7 | S 8 | S 8 | S 7 | S 7 | S 7 | S 7 | SSE 7 | SSE 7 | SE 9 | SSE 7 | SSE 13 | SE 8 | SE 13 |
| kJ | 107 | 193 | 73 | — | 275 | — | — | 163 | 202 | 103 | 86 | 74 | 72 | 68 | 66 | 50 | 37 | 15 | 19 | 12 | 5 | 16 | 2 | 7 |
Swell 3 Height (m) Direction Period (s) | SSW 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SE 13 | S 18 |
| kJ | 34 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 7 | 7 |
Wind waves Height (m) Direction Period (s) | S 7 | S 8 | SSE 7 | S 8 | S 8 | SSE 8 | SSE 8 | SSE 7 | — | SSE 8 | — | — | — | — | — | — | NNW 3 | NNW 4 | NNW 5 | NW 5 | NW 6 | NW 7 | NW 8 | NW 7 |
| kJ | 315 | 294 | 151 | 273 | 273 | 324 | 246 | 250 | — | 187 | — | — | — | — | — | — | 3 | 21 | 46 | 110 | 228 | 382 | 496 | 309 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 3 | 3 | 3 | 3 | 3 | 126 | 3 | 3 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 6 | 0 | 6 | 40 | 98 | 188 | 400 | 195 | 91 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
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