Surf Forecasts:
How big are the waves at Derde Steen today (17 Aug):
- Morning surf: Morning surf (17 Aug, local time) - 10ft (3.0m), 13s period with WSW swell.
- Afternoon surf: Afternoon surf (17 Aug, local time) - 8ft (2.5m), 13s period with WSW swell.
- Evening surf: Evening surf (17 Aug, local time) - 8ft (2.4m), 13s period with WSW swell.
The current surf forecast for Derde Steen at 2AM is: 3.0m 14s primary swell from a West-southwest direction (forecast issued at 07:00pm August 16). The wind direction is predicted to be cross-offshore and the swell rating is 11.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Aug) | 10ft (3.0m) | 13s |
| Afternoon (17 Aug) | 8ft (2.5m) | 13s |
| Evening (17 Aug) | 8ft (2.4m) | 13s |
Table - waves today at Derde Steen. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 18°C on Mon morning, min 12°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Sun 16 | Monday 17 | Tuesday 18 | |||||||||||||||||
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 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 12 | WSW 13 | WSW 12 | SW 13 | SW 13 | SW 12 | SW 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 2082 | 2487 | 3107 | 3331 | 2875 | 2767 | 2528 | 2354 | 2026 | 2026 | 1901 | 1783 | 1422 | 1749 | 1735 | 1475 | 2458 | 2548 | 2379 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 5:39PM1.55m | 5:57AM1.33m | 6:13PM1.43m | 6:32AM1.21m | 6:48PM1.29m | ||||||||||||||
Low Tide | 11:57PM0.19m | 11:57AM0.25m | 00:31AM0.30m | 12:30PM0.38m | |||||||||||||||
 |  |  | | |  |  | | |  | | | | | | | | | | |
 | — | — | — | — | 7:22 | — | — | — | — | — | — | — | 7:22 | — | — | — | — | — | — |
 | 6:16 | — | — | — | — | — | — | — | 6:16 | — | — | — | — | — | — | — | 6:17 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 14 | 14 | 14 | 14 | 15 | 18 | 18 | 16 | 15 | 15 | 15 | 14 | 14 | 15 | 16 | 16 | 13 | 13 |
Feels °C | 13 | 13 | 12 | 12 | 12 | 12 | 16 | 16 | 14 | 15 | 14 | 14 | 13 | 13 | 12 | 12 | 12 | 10 | 11 |
Swell 1 Height (m) Direction Period (s) | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 12 | WSW 13 | WSW 12 | SW 13 | SW 13 | SW 12 | SW 12 |
| kJ | 2082 | 2487 | 3107 | 3331 | 2875 | 2767 | 2528 | 2354 | 2026 | 2026 | 1901 | 1783 | 1422 | 1749 | 1735 | 1475 | 2458 | 2548 | 2379 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | W 16 | — | — | SW 14 | SW 14 | — | SW 12 | WSW 12 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 193 | — | — | 261 | 261 | — | 398 | 528 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 32 | 7 | 1 | 1 | 1 | 1 | 7 | 32 | 32 | 14 | 3 | 3 | 1 | 1 | 1 | 37 | 402 | 59 | 4 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||
Header Global | |||||||||||||||||||
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