Surf Forecasts:
How big are the waves at Derde Steen today (18 Jul):
- Morning surf: Morning surf (18 Jul, local time) - 4ft (1.2m), 9s period with SW swell.
- Afternoon surf: Afternoon surf (18 Jul, local time) - 3.5ft (1.0m), 13s period with SW swell.
- Evening surf: Evening surf (18 Jul, local time) - 5ft (1.5m), 12s period with SW swell.
The current surf forecast for Derde Steen at 4PM is: 1.0m 13s primary swell from a Southwest direction and 1.1m 9s secondary swell from a Southwest direction (forecast issued at 01:00pm July 18). The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Jul) | 4ft (1.2m) | 9s |
| Afternoon (18 Jul) | 3.5ft (1.0m) | 13s |
| Evening (18 Jul) | 5ft (1.5m) | 12s |
Table - waves today at Derde Steen. (Swell directed towards the surf break)
Short Range ForecastSome drizzle, heaviest during Sun afternoon. Very mild (max 17°C on Sat afternoon, min 11°C on Sun night). Wind will be generally light. | |||||||||||||||||||||
Sat 18 | Sunday 19 | Monday 20 | |||||||||||||||||||
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) | SW 9 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 10 | SW 10 | SW 10 | SW 9 | SW 9 | SW 8 | SSW 8 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 307 | 299 | 315 | 677 | 603 | 574 | 565 | 503 | 561 | 699 | 819 | 945 | 945 | 859 | 773 | 627 | 481 | 349 | 279 | 114 | 268 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross | cross | cross-off | cross-off | cross-off | cross-off | on | on | cross-on | glassy | glassy | glassy | cross-off | glassy | cross-on | on | glassy | glassy |
High Tide | 6:19PM1.52m | 6:38AM1.28m | 7:01PM1.42m | 7:23AM1.17m | 7:45PM1.31m | ||||||||||||||||
Low Tide | 12:00PM0.16m | 00:39AM0.23m | 12:39PM0.27m | 1:24AM0.33m | 1:21PM0.39m | ||||||||||||||||
 | |  |  | | | | |  |  | | | | | | | | | | | | |
 | — | — | — | — | — | — | 7:47 | — | — | — | — | — | — | — | 7:46 | — | — | — | — | — | — |
 | — | — | 5:57 | — | — | — | — | — | — | — | 5:57 | — | — | — | — | — | — | — | 5:58 | — | — |
mm | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 17 | 16 | 15 | 14 | 14 | 13 | 13 | 14 | 15 | 14 | 14 | 13 | 12 | 11 | 11 | 13 | 14 | 14 | 13 | 13 |
Feels °C | 15 | 16 | 15 | 14 | 13 | 13 | 12 | 11 | 12 | 14 | 13 | 13 | 13 | 12 | 10 | 10 | 12 | 12 | 12 | 12 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 9 | SW 9 | SW 10 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 10 | SW 10 | SW 10 | SW 9 | SW 9 | SW 8 | SSW 8 | SSW 8 |
| kJ | 307 | 202 | 235 | 677 | 603 | 574 | 565 | 503 | 561 | 699 | 819 | 945 | 945 | 859 | 773 | 627 | 481 | 349 | 279 | 114 | 106 |
Swell 2 Height (m) Direction Period (s) | S 12 | SW 13 | SW 13 | W 12 | WSW 11 | WSW 11 | W 11 | W 11 | W 11 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | SW 10 | SW 16 |
| kJ | 129 | 299 | 315 | 132 | 205 | 198 | 191 | 188 | 146 | 177 | 100 | 96 | 121 | 89 | 89 | 89 | 121 | 92 | 90 | 80 | 268 |
Swell 3 Height (m) Direction Period (s) | SW 14 | S 11 | W 12 | S 11 | S 10 | S 10 | S 10 | S 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | S 10 | S 10 | SSE 9 | WSW 16 | SW 16 | SW 18 | SW 18 | W 10 | W 10 |
| kJ | 189 | 114 | 137 | 81 | 96 | 71 | 74 | 56 | 36 | 34 | 33 | 18 | 17 | 8 | 17 | 25 | 10 | 13 | 50 | 89 | 64 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 6 | 32 | 32 | 32 | 6 | 0 | 0 | 0 | 0 | 37 | 37 | 3 | 0 | 0 | 0 | 0 | 0 | 32 | 14 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
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