Surf Forecasts:
How big are the waves at Thermopylae today (13 Aug):
- Morning surf: Morning surf (13 Aug, local time) - 7ft (2.2m), 16s period with SW swell.
- Afternoon surf: Afternoon surf (13 Aug, local time) - 7ft (2.2m), 17s period with SW swell.
- Evening surf: Evening surf (13 Aug, local time) - 7ft (2.1m), 16s period with WSW swell.
The current surf forecast for Thermopylae at 10AM is: 2.3m 17s primary swell from a Southwest direction and 1.2m 19s secondary swell from a Southwest direction (forecast issued at 01:00am August 13). The wind direction is predicted to be cross-offshore and the swell rating is 5.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Aug) | 7ft (2.2m) | 16s |
| Afternoon (13 Aug) | 7ft (2.2m) | 17s |
| Evening (13 Aug) | 7ft (2.1m) | 16s |
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 morning). Wind will be generally light. | ||||||||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | ||||||||||||||||||||||
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 16 | SW 19 | SW 16 | WSW 17 | WSW 17 | SW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 14 | WSW 14 | WSW 14 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 1809 | 1985 | 2379 | 3378 | 2929 | 2379 | 2007 | 2136 | 1828 | 1567 | 1412 | 1337 | 1337 | 1257 | 1090 | 947 | 1075 | 1196 | 1179 | 1144 | 1127 | 1306 | 1403 | 1384 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | cross-off | cross-off | cross-on | cross-off | cross-off | cross-off | cross | cross | cross | cross-on | cross-on | cross | cross-on | cross-off | cross-off | off | glassy | cross-on | cross | cross-off | glassy |
High Tide | 3:36AM1.77m | 3:58PM1.88m | 4:15AM1.77m | 4:35PM1.88m | 4:52AM1.72m | 5:11PM1.83m | ||||||||||||||||||
Low Tide | 9:45AM0.24m | 10:13PM0.26m | 10:21AM0.25m | 10:50PM0.28m | 10:56AM0.29m | |||||||||||||||||||
 | |  | | | | | | |  | | |  | | | | | |  | | | | | | |
 | — | 7:28 | — | — | — | — | — | — | — | 7:26 | — | — | — | — | — | — | — | 7:26 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:14 | — | — | — | — | — | — | — | 6:15 | — | — | — | — | — | — | — | 6:15 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 20 | 20 | 21 | 25 | 23 | 21 | 20 | 19 | 16 | 13 | 15 | 15 | 15 | 14 | 14 | 13 | 13 | 13 | 15 | 18 | 17 | 16 | 16 |
Feels °C | 16 | 17 | 17 | 18 | 21 | 20 | 18 | 16 | 15 | 12 | 10 | 12 | 12 | 13 | 13 | 13 | 13 | 12 | 11 | 14 | 16 | 15 | 14 | 15 |
Swell 1 Height (m) Direction Period (s) | WSW 16 | SW 16 | SW 16 | WSW 17 | WSW 17 | SW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 14 | WSW 14 | WSW 14 |
| kJ | 1809 | 1829 | 2379 | 3378 | 2929 | 2379 | 2007 | 2136 | 1828 | 1567 | 1412 | 1337 | 1337 | 1257 | 1090 | 947 | 1075 | 1196 | 1179 | 1144 | 1127 | 1306 | 1403 | 1384 |
Swell 2 Height (m) Direction Period (s) | SW 21 | SW 19 | SW 19 | SE 11 | NNW 7 | SE 10 | NNW 6 | SE 9 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | WNW 5 | WNW 5 | W 5 | W 5 | W 5 | W 6 | W 7 | — | — | — |
| kJ | 1418 | 1985 | 1070 | 202 | 9 | 98 | 23 | 55 | 63 | 42 | 29 | 30 | 30 | 31 | 23 | 28 | 27 | 20 | 21 | 22 | 52 | — | — | — |
Swell 3 Height (m) Direction Period (s) | SE 7 | SE 10 | — | — | NNW 7 | NNW 7 | — | — | — | — | — | — | — | — | — | W 18 | — | — | — | — | — | — | — | — |
| kJ | 52 | 270 | — | — | 15 | 18 | — | — | — | — | — | — | — | — | — | 162 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | NNW 5 | NNW 4 | NNW 4 | NW 4 | NNW 5 | NW 5 | NW 5 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 24 | 13 | 11 | 18 | 27 | 33 | 31 | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 31 | 17 | 0 | 0 | 0 | 6 | 11 | 31 | 24 | 17 | 6 | 10 | 0 | 0 | 0 | 0 | 6 | 1 | 0 | 0 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
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