Surf Forecasts:
How big are the waves at Derde Steen today (21 Sep):
- Morning surf: Morning surf (21 Sep, local time) - 4.5ft (1.3m), 12s period with WSW swell.
- Afternoon surf: Afternoon surf (21 Sep, local time) - 4ft (1.2m), 12s period with WSW swell.
- Evening surf: Evening surf (21 Sep, local time) - 4ft (1.2m), 11s period with WSW swell.
The current surf forecast for Derde Steen at 3PM is: 1.2m 12s primary swell from a West-southwest direction and 0.8m 6s secondary swell from a South direction (forecast issued at 07:00am September 21). An open ocean swell of 1.0m 6s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Sep) | 4.5ft (1.3m) | 12s |
| Afternoon (21 Sep) | 4ft (1.2m) | 12s |
| Evening (21 Sep) | 4ft (1.2m) | 11s |
Table - waves today at Derde Steen. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 3mm), mostly falling on Mon night. Warm (max 29°C on Tue morning, min 14°C on Tue night). Wind will be generally light. | |||||||||||||||||||||||
Monday 21 | Tuesday 22 | Wednesday 23 | |||||||||||||||||||||
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 | WSW 12 | WSW 12 | WSW 12 | SW 11 | WSW 11 | SW 11 | SW 11 | SW 11 | SSW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 10 | SW 10 | SW 10 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 554 | 536 | 472 | 429 | 380 | 335 | 283 | 273 | 303 | 362 | 336 | 306 | 319 | 440 | 357 | 332 | 332 | 293 | 254 | 216 | 184 | 180 | 170 |
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 | off | off | cross | cross-on | cross-on | glassy | cross | cross | off | cross | cross-on | cross-on | cross-on | cross | cross-off |
High Tide | 12:26PM1.08m | 00:34AM1.10m | 1:02PM1.21m | 1:11AM1.22m | 1:32PM1.35m | ||||||||||||||||||
Low Tide | 6:11AM0.55m | 6:42PM0.56m | 6:52AM0.44m | 7:17PM0.43m | 7:23AM0.33m | 7:46PM0.30m | |||||||||||||||||
 |  | | | | | | |  |  | |  | | |  | | | | | | | | | |
 | 6:37 | — | — | — | — | — | — | — | 6:35 | — | — | — | — | — | — | — | 6:35 | — | — | — | — | — | — |
 | — | — | — | — | 6:40 | — | — | — | — | — | — | — | 6:42 | — | — | — | — | — | — | — | 6:42 | — | — |
mm | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — |
Temp °C | 17 | 18 | 24 | 28 | 28 | 25 | 24 | 22 | 22 | 23 | 29 | 23 | 18 | 19 | 18 | 15 | 14 | 15 | 16 | 16 | 19 | 17 | 17 |
Feels °C | 16 | 17 | 23 | 26 | 27 | 24 | 23 | 22 | 21 | 22 | 26 | 22 | 17 | 20 | 18 | 14 | 14 | 15 | 16 | 16 | 19 | 17 | 17 |
Swell 1 Height (m) Direction Period (s) | WSW 12 | WSW 12 | WSW 12 | WSW 12 | SW 11 | WSW 11 | SW 11 | SW 11 | SW 11 | SSW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 10 | SW 10 | SW 10 |
| kJ | 554 | 536 | 472 | 429 | 380 | 335 | 283 | 273 | 303 | 362 | 336 | 306 | 319 | 440 | 357 | 332 | 332 | 293 | 254 | 216 | 184 | 180 | 170 |
Swell 2 Height (m) Direction Period (s) | — | S 6 | S 6 | S 6 | SW 15 | SW 15 | S 7 | SW 14 | SW 14 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | S 15 | S 14 | S 13 | S 13 | S 12 | S 12 | S 12 | NW 4 | NNW 5 | NNW 5 |
| kJ | — | 54 | 60 | 47 | 57 | 106 | 32 | 198 | 149 | 186 | 133 | 130 | 91 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | SW 15 | — | — | SW 14 | S 5 | SSE 7 | SSE 6 | SSE 5 | SSE 6 | NW 3 | — | — | — | — | — | SW 15 | SW 14 | S 11 | S 11 | SW 14 |
| kJ | — | — | — | 35 | — | — | 167 | 14 | 15 | 16 | 5 | 6 | 3 | — | — | — | — | — | 9 | 8 | 3 | 2 | 7 |
Wind waves Height (m) Direction Period (s) | S 6 | SSE 6 | SSE 6 | SSE 6 | S 6 | S 6 | SSE 6 | — | — | — | — | NW 3 | — | — | — | — | — | NNW 3 | NNW 3 | NW 4 | — | — | — |
| kJ | 50 | 90 | 82 | 66 | 36 | 38 | 49 | — | — | — | — | 2 | — | — | — | — | — | 1 | 4 | 3 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 32 | 32 | 32 | 0 | 6 | 6 | 0 | 6 | 32 | 3 | 3 | 3 | 0 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||||
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