Surf Forecasts:
How big are the waves at Thermopylae today (12 Aug):
- Morning surf: Morning surf (12 Aug, local time) - 5.5ft (1.7m), 19s period with SW swell.
- Afternoon surf: Afternoon surf (12 Aug, local time) - 6ft (1.9m), 18s period with SW swell.
- Evening surf: Evening surf (12 Aug, local time) - 6.5ft (2.0m), 17s period with SW swell.
The current surf forecast for Thermopylae at 1AM is: 1.4m 21s primary swell from a Southwest direction and 1.0m 9s secondary swell from a South-southeast direction, 1.8m 8s secondary swell from a Southeast direction (forecast issued at 07:00pm August 11). The wind direction is predicted to be offshore and the swell rating is 4.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Aug) | 5.5ft (1.7m) | 19s |
| Afternoon (12 Aug) | 6ft (1.9m) | 18s |
| Evening (12 Aug) | 6.5ft (2.0m) | 17s |
Table - waves today at Thermopylae. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 25°C on Thu afternoon, min 14°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Tue 11 | Wednesday 12 | Thursday 13 | |||||||||||||||||
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) | SSW 12 | WSW 23 | SW 22 | SW 21 | SW 20 | SW 19 | SW 18 | SW 18 | SW 17 | SW 17 | SW 17 | SW 16 | SW 19 | WSW 16 | SW 17 | SW 17 | SW 16 | WSW 16 | WSW 16 |
Wave Graph  | |||||||||||||||||||
 kJ | 541 | 947 | 1414 | 1850 | 1922 | 2184 | 2223 | 2019 | 2238 | 2293 | 2037 | 1652 | 1985 | 1977 | 3307 | 2715 | 2379 | 2007 | 1957 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | off | cross-off | off | off | off | cross-off | cross-off | off | off | off | off | cross-off | cross-off | cross-on | cross | cross-off |
High Tide | 2:36PM1.73m | 2:54AM1.73m | 3:18PM1.83m | 3:36AM1.77m | 3:58PM1.88m | ||||||||||||||
Low Tide | 8:50PM0.36m | 9:06AM0.27m | 9:33PM0.28m | 9:45AM0.24m | 10:13PM0.26m | ||||||||||||||
 |  | | | | | | | | | | | | | | | | | | |
 | — | — | — | — | 7:28 | — | — | — | — | — | — | — | 7:28 | — | — | — | — | — | — |
 | 6:13 | — | — | — | — | — | — | — | 6:14 | — | — | — | — | — | — | — | 6:14 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 16 | 15 | 14 | 14 | 14 | 16 | 19 | 20 | 20 | 20 | 20 | 20 | 19 | 21 | 25 | 24 | 22 | 20 |
Feels °C | 15 | 12 | 12 | 11 | 10 | 10 | 13 | 16 | 17 | 16 | 16 | 15 | 16 | 16 | 18 | 20 | 21 | 19 | 16 |
Swell 1 Height (m) Direction Period (s) | SSW 12 | SSW 11 | SSE 9 | SW 21 | SW 20 | SW 19 | SW 18 | SW 18 | SW 17 | SW 17 | SW 17 | SW 16 | SW 16 | WSW 16 | SW 17 | SW 17 | SW 16 | WSW 16 | WSW 16 |
| kJ | 541 | 329 | 267 | 1850 | 1922 | 2184 | 2223 | 2019 | 2238 | 2293 | 2037 | 1652 | 1611 | 1977 | 3307 | 2715 | 2379 | 2007 | 1957 |
Swell 2 Height (m) Direction Period (s) | WSW 24 | WSW 23 | SW 22 | SSE 9 | SSE 9 | SE 8 | SE 8 | S 10 | SSE 9 | S 10 | SW 22 | SW 21 | SW 19 | SW 19 | SE 10 | NNW 7 | SE 11 | NNW 6 | SE 10 |
| kJ | 381 | 947 | 1414 | 157 | 154 | 102 | 67 | 162 | 73 | 8 | 558 | 1418 | 1985 | 1070 | 180 | 9 | 134 | 20 | 74 |
Swell 3 Height (m) Direction Period (s) | WSW 10 | — | SSW 11 | SSW 11 | SW 11 | SW 11 | SW 10 | SW 10 | SW 10 | — | S 10 | S 10 | SE 10 | SE 7 | — | NNW 7 | NNW 7 | NNW 6 | — |
| kJ | 20 | — | 251 | 211 | 169 | 140 | 106 | 82 | 64 | — | 8 | 8 | 87 | 36 | — | 9 | 29 | 36 | — |
Wind waves Height (m) Direction Period (s) | SSE 8 | SSE 8 | SE 8 | SE 8 | SE 8 | — | — | — | — | SE 8 | SE 7 | SE 7 | SE 7 | — | — | — | — | — | NNW 6 |
| kJ | 219 | 343 | 530 | 468 | 423 | — | — | — | — | 49 | 65 | 77 | 64 | — | — | — | — | — | 20 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 11 | 6 | 6 | 0 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||
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