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 6PM is: 1.9m 17s primary swell from a Southwest direction and 0.6m 8s secondary swell from a South-southeast direction (forecast issued at 01:00pm August 12). The wind direction is predicted to be cross-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 13°C on Fri night). Wind will be generally light. | |||||||||||||||||||||
Wed 12 | Thursday 13 | Friday 14 | |||||||||||||||||||
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) | SW 18 | SW 18 | SW 17 | SW 17 | SW 17 | WSW 16 | SW 19 | SW 16 | WSW 17 | SW 17 | SW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2223 | 2019 | 2238 | 2293 | 2037 | 1809 | 1985 | 2379 | 3378 | 2715 | 2379 | 2007 | 2136 | 1828 | 1567 | 1412 | 1337 | 1337 | 1257 | 1139 | 947 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | cross-off | off | off | off | off | cross-off | cross | cross-on | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-on | cross-on | glassy | glassy |
High Tide | 3:18PM1.83m | 3:36AM1.77m | 3:58PM1.88m | 4:15AM1.77m | 4:35PM1.88m | ||||||||||||||||
Low Tide | 9:06AM0.27m | 9:33PM0.28m | 9:45AM0.24m | 10:13PM0.26m | 10:21AM0.25m | 10:50PM0.28m | |||||||||||||||
 | | |  |  | | | | | | | | | | | | |  | | | | |
 | — | — | — | — | — | — | 7:28 | — | — | — | — | — | — | — | 7:26 | — | — | — | — | — | — |
 | — | — | 6:14 | — | — | — | — | — | — | — | 6:14 | — | — | — | — | — | — | — | 6:15 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 20 | 21 | 20 | 21 | 20 | 20 | 20 | 21 | 25 | 23 | 21 | 20 | 19 | 17 | 15 | 15 | 16 | 16 | 14 | 14 |
Feels °C | 13 | 18 | 19 | 16 | 17 | 15 | 17 | 17 | 18 | 21 | 20 | 18 | 16 | 15 | 13 | 11 | 12 | 14 | 15 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | SW 18 | SW 18 | SW 17 | SW 17 | SW 17 | WSW 16 | SW 16 | SW 16 | WSW 17 | SW 17 | SW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 14 |
| kJ | 2223 | 2019 | 2238 | 2293 | 2037 | 1809 | 1829 | 2379 | 3378 | 2715 | 2379 | 2007 | 2136 | 1828 | 1567 | 1412 | 1337 | 1337 | 1257 | 1139 | 947 |
Swell 2 Height (m) Direction Period (s) | SSE 9 | S 10 | SSE 8 | S 10 | SW 22 | SW 21 | SW 19 | SW 19 | SE 11 | NNW 7 | SE 10 | NNW 5 | SE 9 | SE 9 | SE 11 | SE 11 | SE 11 | SE 11 | NW 5 | WNW 5 | WNW 5 |
| kJ | 92 | 164 | 39 | 18 | 558 | 1418 | 1985 | 1070 | 198 | 15 | 108 | 17 | 54 | 42 | 55 | 40 | 30 | 30 | 25 | 22 | 20 |
Swell 3 Height (m) Direction Period (s) | SW 10 | SW 10 | SW 10 | — | S 10 | SE 7 | SE 10 | — | — | NNW 7 | NNW 7 | — | — | — | — | — | — | — | — | SE 11 | W 18 |
| kJ | 106 | 84 | 65 | — | 8 | 65 | 341 | — | — | 15 | 26 | — | — | — | — | — | — | — | — | 19 | 162 |
Wind waves Height (m) Direction Period (s) | — | — | — | SSE 8 | SE 7 | SE 9 | SE 6 | — | — | — | — | — | NNW 5 | NNW 4 | NNW 4 | NW 4 | NW 5 | NW 5 | — | W 6 | — |
| kJ | — | — | — | 37 | 65 | 268 | 59 | — | — | — | — | — | 22 | 14 | 13 | 19 | 22 | 24 | — | 15 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 6 | 17 | 0 | 0 | 0 | 0 | 6 | 11 | 17 | 17 | 0 | 0 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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