Surf Forecasts:
How big are the waves at Derde Steen today (14 Sep):
- Morning surf: Morning surf (14 Sep, local time) - 4.5ft (1.3m), 12s period with SW swell.
- Afternoon surf: Afternoon surf (14 Sep, local time) - 3.5ft (1.1m), 12s period with SW swell.
- Evening surf: Evening surf (14 Sep, local time) - 3.5ft (1.0m), 12s period with SW swell.
The current surf forecast for Derde Steen at 6PM is: 1.8m 7s primary swell from a Northwest direction and 1.0m 12s secondary swell from a Southwest direction, 0.2m 13s secondary swell from a South-southeast direction (forecast issued at 01:00pm September 14). The wind direction is predicted to be cross-shore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Sep) | 4.5ft (1.3m) | 12s |
| Afternoon (14 Sep) | 3.5ft (1.1m) | 12s |
| Evening (14 Sep) | 3.5ft (1.0m) | 12s |
Table - waves today at Derde Steen. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 20mm), heaviest during Tue night. Very mild (max 17°C on Mon afternoon, min 11°C on Tue night). Mainly strong winds. | |||||||||||||||||||||
Mon 14 | Tuesday 15 | Wednesday 16 | |||||||||||||||||||
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 12 | SW 12 | NW 7 | NW 7 | NW 8 | NW 8 | NW 8 | SW 11 | NW 6 | SW 17 | SW 16 | SW 15 | SW 15 | WSW 14 | WSW 14 | SW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | SW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 430 | 361 | 275 | 327 | 292 | 227 | 202 | 194 | 175 | 350 | 813 | 1251 | 2061 | 3929 | 3268 | 3000 | 878 | 1561 | 1011 | 1025 | 1137 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-on | cross | cross | cross | cross | cross-off | cross-off | cross-on | cross | cross | cross | cross | cross | cross | cross-off |
High Tide | 4:59PM1.52m | 5:18AM1.35m | 5:29PM1.40m | 5:49AM1.24m | 6:00PM1.27m | ||||||||||||||||
Low Tide | 10:49AM0.16m | 11:15PM0.17m | 11:18AM0.26m | 11:44PM0.28m | 11:48AM0.38m | ||||||||||||||||
 |  | |  | |  |  | | | | | |  | | |  | | | |  | | |
 | — | — | — | — | — | — | 6:46 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — |
 | — | — | 6:36 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — |
mm | — | — | — | — | — | — | 1 | — | — | — | — | 2 | 7 | 7 | 3 | — | — | — | — | — | — |
Temp °C | 17 | 17 | 17 | 15 | 14 | 15 | 15 | 14 | 16 | 16 | 16 | 14 | 13 | 12 | 11 | 14 | 15 | 16 | 15 | 14 | 12 |
Feels °C | 12 | 10 | 12 | 11 | 10 | 12 | 12 | 10 | 10 | 9 | 10 | 10 | 8 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 16 | SW 15 | SW 15 | WSW 14 | WSW 14 | SW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | SW 13 |
| kJ | 430 | 361 | 272 | 268 | 263 | 220 | 202 | 194 | 165 | 177 | 813 | 1251 | 2061 | 3929 | 3268 | 3000 | 878 | 1561 | 1011 | 1025 | 1137 |
Swell 2 Height (m) Direction Period (s) | — | SE 13 | SSE 13 | SE 8 | — | SE 13 | S 13 | SW 16 | SW 18 | SW 17 | — | — | WNW 8 | NW 7 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | W 13 |
| kJ | — | 26 | 16 | 2 | — | 7 | 3 | 43 | 152 | 350 | — | — | 362 | 156 | 215 | 528 | 596 | 790 | 905 | 683 | 564 |
Swell 3 Height (m) Direction Period (s) | — | — | — | SE 13 | — | — | — | — | — | — | — | — | WSW 9 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 7 | — | — | — | — | — | — | — | — | 80 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 5 | NW 6 | NW 7 | NW 7 | NW 8 | NW 8 | NW 8 | NW 7 | NW 6 | NW 7 | WNW 7 | WNW 8 | — | — | — | — | SW 9 | S 6 | S 6 | S 6 | S 7 |
| kJ | 69 | 161 | 275 | 327 | 292 | 227 | 181 | 194 | 175 | 315 | 405 | 468 | — | — | — | — | 853 | 141 | 193 | 220 | 274 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 83 | 188 | 83 | 83 | 83 | 40 | 32 | 188 | 234 | 195 | 195 | 177 | 32 | 126 | 53 | 342 | 342 | 160 | 160 | 59 | 59 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
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