Surf Forecasts:
How big are the waves at Derde Steen today (18 Aug):
- Morning surf: Morning surf (18 Aug, local time) - 8ft (2.4m), 12s period with WSW swell.
- Afternoon surf: Afternoon surf (18 Aug, local time) - 7.5ft (2.3m), 13s period with SW swell.
- Evening surf: Evening surf (18 Aug, local time) - 10ft (3.0m), 12s period with SW swell.
The current surf forecast for Derde Steen at 9AM is: 2.4m 12s primary swell from a West-southwest direction (forecast issued at 01:00am August 18). The wind direction is predicted to be cross-shore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Aug) | 8ft (2.4m) | 12s |
| Afternoon (18 Aug) | 7.5ft (2.3m) | 13s |
| Evening (18 Aug) | 10ft (3.0m) | 12s |
Table - waves today at Derde Steen. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 16°C on Tue afternoon, min 12°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | ||||||||||||||||||||||
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 13 | WSW 13 | WSW 13 | WSW 12 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 1930 | 1514 | 1749 | 1735 | 1429 | 2345 | 2630 | 2548 | 2379 | 2113 | 1978 | 1866 | 1742 | 1638 | 1550 | 1451 | 1591 | 2290 | 3284 | 3031 | 2840 | 2497 | 1789 | 1852 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross | cross-on | cross | cross | cross | cross-off | cross | cross | cross | cross-on | cross-on | cross | cross | cross-off | cross | cross-off | cross | cross | cross | cross | cross-off |
High Tide | 6:32AM1.21m | 6:48PM1.29m | 7:12AM1.10m | 7:29PM1.15m | 8:07AM0.99m | 8:32PM1.04m | ||||||||||||||||||
Low Tide | 00:31AM0.30m | 12:30PM0.38m | 1:08AM0.42m | 1:06PM0.51m | 1:55AM0.54m | 1:57PM0.63m | ||||||||||||||||||
 |  |  | | | | | | | | | | | | | | | | | |  | | | | |
 | — | 7:22 | — | — | — | — | — | — | — | 7:20 | — | — | — | — | — | — | — | 7:20 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:17 | — | — | — | — | — | — | — | 6:19 | — | — | — | — | — | — | — | 6:19 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 14 | 15 | 16 | 15 | 13 | 13 | 13 | 12 | 12 | 14 | 16 | 16 | 14 | 14 | 14 | 13 | 13 | 15 | 16 | 14 | 13 | 12 |
Feels °C | 13 | 13 | 13 | 13 | 12 | 12 | 10 | 11 | 12 | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 13 | 11 | 12 | 13 | 13 | 10 | 10 | 10 |
Swell 1 Height (m) Direction Period (s) | WSW 13 | WSW 13 | WSW 13 | WSW 12 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 |
| kJ | 1930 | 1514 | 1749 | 1735 | 1429 | 2345 | 2630 | 2548 | 2379 | 2113 | 1978 | 1866 | 1742 | 1638 | 1550 | 1451 | 1591 | 2290 | 3284 | 3031 | 2840 | 2497 | 1789 | 1852 |
Swell 2 Height (m) Direction Period (s) | SW 14 | SW 13 | — | SW 12 | WSW 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 224 | 340 | — | 678 | 528 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 4 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 33 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 3 | 1 | 0 | 3 | 42 | 10 | 59 | 4 | 1 | 1 | 1 | 1 | 3 | 10 | 1 | 1 | 0 | 1 | 1 | 4 | 4 | 342 | 17 | 0 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
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