Surf Forecasts:
How big are the waves at Thermopylae today (17 Aug):
- Morning surf: Morning surf (17 Aug, local time) - 8ft (2.5m), 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 Thermopylae at 6AM is: 3.0m 13s primary swell from a West-southwest direction (forecast issued at 01:00am August 17). The wind direction is predicted to be cross-shore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Aug) | 8ft (2.5m) | 13s |
| Afternoon (17 Aug) | 8ft (2.5m) | 13s |
| Evening (17 Aug) | 8ft (2.4m) | 13s |
Table - waves today at Thermopylae. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 17°C on Mon afternoon, min 12°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | ||||||||||||||||||||||
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 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 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 3282 | 3066 | 2709 | 2528 | 2303 | 2026 | 2057 | 2116 | 1599 | 1399 | 1821 | 1216 | 1806 | 2555 | 2548 | 2418 | 2379 | 2113 | 1978 | 1771 | 1742 | 1550 | 1550 | 1476 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross | cross-on | on | glassy | glassy | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-on | cross-on | cross | cross |
High Tide | 6:03AM1.55m | 6:22PM1.64m | 6:39AM1.44m | 6:59PM1.51m | 7:19AM1.32m | 7:41PM1.38m | ||||||||||||||||||
Low Tide | 00:00AM0.43m | 12:02PM0.47m | 00:36AM0.54m | 12:35PM0.59m | 1:15AM0.65m | 1:14PM0.71m | ||||||||||||||||||
 | |  | | | |  |  | | |  | | | | | | | |  | | | | | | |
 | — | 7:22 | — | — | — | — | — | — | — | 7:22 | — | — | — | — | — | — | — | 7:20 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:16 | — | — | — | — | — | — | — | 6:17 | — | — | — | — | — | — | — | 6:19 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 14 | 14 | 16 | 17 | 15 | 15 | 15 | 14 | 14 | 14 | 15 | 16 | 15 | 13 | 13 | 13 | 12 | 12 | 14 | 15 | 15 | 14 | 14 |
Feels °C | 13 | 12 | 11 | 14 | 15 | 14 | 15 | 15 | 13 | 13 | 13 | 13 | 13 | 11 | 10 | 11 | 11 | 10 | 10 | 12 | 12 | 12 | 12 | 13 |
Swell 1 Height (m) Direction Period (s) | 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 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 |
| kJ | 3282 | 3066 | 2709 | 2528 | 2303 | 2026 | 2057 | 2116 | 1599 | 1399 | 1821 | 1216 | 1806 | 2555 | 2548 | 2418 | 2379 | 2113 | 1978 | 1771 | 1742 | 1550 | 1550 | 1476 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | WSW 16 | — | — | SW 14 | SW 14 | — | SW 12 | WSW 12 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | 208 | — | — | 224 | 261 | — | 678 | 528 | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | SW 16 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | 65 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | NNW 3 | — | — | — | — | — | — | — | — | — | — | SSE 3 | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 9 | — | — | — | — | — | — | — | — | — | — | 7 | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 6 | 6 | 6 | 11 | 17 | 17 | 0 | 0 | 1 | 0 | 0 | 0 | 21 | 27 | 47 | 0 | 0 | 0 | 1 | 1 | 1 | 26 | 1 | 1 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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