Surf Forecasts:
How big are the waves at Thermopylae today (11 Aug):
- Morning surf: Morning surf (11 Aug, local time) - 7ft (2.2m), 13s period with S swell.
- Afternoon surf: Afternoon surf (11 Aug, local time) - 5ft (1.6m), 12s period with SSW swell.
- Evening surf: Evening surf (11 Aug, local time) - 3ft (0.9m), 23s period with WSW swell.
The current surf forecast for Thermopylae at 2AM is: 3.0m 13s primary swell from a South direction and 2.5m 13s secondary swell from a South direction, 0.6m 11s secondary swell from a West-southwest direction (forecast issued at 07:00pm August 10). The wind direction is predicted to be cross-offshore and the swell rating is 6.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Aug) | 7ft (2.2m) | 13s |
| Afternoon (11 Aug) | 5ft (1.6m) | 12s |
| Evening (11 Aug) | 3ft (0.9m) | 23s |
Table - waves today at Thermopylae. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 25°C on Thu afternoon, min 11°C on Mon night). Winds decreasing (fresh winds from the SE on Mon night, light winds from the ESE by Wed afternoon). | |||||||||||||||||||
Mon 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||||
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) | S 10 | S 10 | SSW 14 | S 13 | S 13 | SSW 13 | S 12 | SSW 12 | SSW 12 | WSW 23 | SW 22 | SW 21 | SW 20 | SW 19 | SW 18 | SW 18 | SW 17 | SW 17 | SW 17 |
Wave Graph  | |||||||||||||||||||
 kJ | 963 | 1034 | 1122 | 3337 | 2187 | 1780 | 1292 | 669 | 550 | 947 | 1414 | 1850 | 1922 | 2184 | 2223 | 1839 | 2238 | 2293 | 2161 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | off | cross-off | off | off | cross-off | off | off | off | cross-off | off | off |
High Tide | 2:07AM1.66m | 2:36PM1.73m | 2:54AM1.73m | 3:18PM1.83m | |||||||||||||||
Low Tide | 8:01PM0.46m | 8:24AM0.35m | 8:50PM0.36m | 9:06AM0.27m | 9:33PM0.28m | ||||||||||||||
 |  | | | |  | | | | | | | | | | | | | | |
 | — | — | — | — | 7:30 | — | — | — | — | — | — | — | 7:28 | — | — | — | — | — | — |
 | 6:12 | — | — | — | — | — | — | — | 6:13 | — | — | — | — | — | — | — | 6:14 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 12 | 11 | 11 | 11 | 11 | 12 | 16 | 17 | 16 | 15 | 14 | 14 | 14 | 17 | 21 | 22 | 20 | 21 |
Feels °C | 5 | 5 | 6 | 8 | 8 | 9 | 9 | 13 | 13 | 13 | 12 | 10 | 10 | 10 | 14 | 19 | 19 | 16 | 17 |
Swell 1 Height (m) Direction Period (s) | SW 11 | SSW 14 | SSW 14 | S 13 | S 13 | SSW 13 | S 12 | SSW 12 | SSW 12 | SSW 11 | SW 22 | SW 21 | SW 20 | SW 19 | SW 18 | SW 18 | SW 17 | SW 17 | SW 17 |
| kJ | 368 | 746 | 1122 | 2468 | 2187 | 1780 | 1292 | 669 | 550 | 329 | 1414 | 1850 | 1922 | 2184 | 2223 | 1839 | 2238 | 2293 | 2161 |
Swell 2 Height (m) Direction Period (s) | SSW 14 | SW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 10 | WSW 10 | WSW 24 | WSW 23 | SW 11 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | S 10 | SSE 7 | S 10 | SW 22 |
| kJ | 390 | 268 | 101 | 76 | 66 | 45 | 20 | 20 | 381 | 947 | 278 | 202 | 161 | 129 | 106 | 162 | 35 | 8 | 568 |
Swell 3 Height (m) Direction Period (s) | WSW 11 | WSW 10 | — | — | — | W 27 | SW 26 | SW 25 | WSW 10 | — | — | SSW 11 | SSW 11 | SW 11 | SW 10 | S 11 | SW 10 | — | S 10 |
| kJ | 115 | 229 | — | — | — | 14 | 27 | 162 | 20 | — | — | 211 | 207 | 137 | 106 | 20 | 64 | — | 8 |
Wind waves Height (m) Direction Period (s) | S 10 | S 10 | S 10 | S 13 | SE 7 | SE 7 | SE 8 | SSE 8 | SE 8 | SSE 8 | SSE 9 | SE 8 | SE 8 | SE 9 | SE 9 | SE 8 | SE 9 | SE 7 | SE 8 |
| kJ | 963 | 1034 | 968 | 3337 | 341 | 363 | 477 | 197 | 255 | 287 | 267 | 468 | 443 | 393 | 328 | 229 | 199 | 56 | 69 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 405 | 8 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||
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