Surf Forecasts:
How big are the waves at Thermopylae today (18 Sep):
- Morning surf: Morning surf (18 Sep, local time) - 5.5ft (1.7m), 11s period with SW swell.
- Afternoon surf: Afternoon surf (18 Sep, local time) - 5.5ft (1.7m), 12s period with SW swell.
- Evening surf: Evening surf (18 Sep, local time) - 5ft (1.6m), 13s period with SW swell.
The current surf forecast for Thermopylae at 7PM is: 1.6m 13s primary swell from a Southwest direction and 0.2m 18s secondary swell from a West-southwest direction, 1.9m 7s secondary swell from a South-southeast direction (forecast issued at 01:00pm September 18). The wind direction is predicted to be cross-offshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 5.5ft (1.7m) | 11s |
| Afternoon (18 Sep) | 5.5ft (1.7m) | 12s |
| Evening (18 Sep) | 5ft (1.6m) | 13s |
Table - waves today at Thermopylae. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 25°C on Sun afternoon, min 13°C on Fri night). Winds decreasing (fresh winds from the SE on Fri afternoon, light winds from the SE by Mon morning). | |||||||||||||||||||||
Fri 18 | Saturday 19 | Sunday 20 | |||||||||||||||||||
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 11 | SW 11 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 713 | 726 | 961 | 796 | 864 | 736 | 712 | 700 | 448 | 407 | 978 | 1423 | 1527 | 1591 | 1452 | 1367 | 1110 | 1030 | 904 | 822 | 657 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-off |
High Tide | 7:33PM1.24m | 8:50AM1.17m | 9:28PM1.15m | 11:21AM1.20m | |||||||||||||||||
Low Tide | 1:11PM0.85m | 2:06AM0.84m | 3:12PM0.95m | 4:29AM0.87m | 5:44PM0.89m | ||||||||||||||||
 | | |  | | | | | | | | | | | | | | | | | | |
 | — | — | — | — | — | — | 6:41 | — | — | — | — | — | — | — | 6:39 | — | — | — | — | — | — |
 | — | — | 6:38 | — | — | — | — | — | — | — | 6:39 | — | — | — | — | — | — | — | 6:39 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 19 | 20 | 16 | 14 | 13 | 13 | 13 | 17 | 20 | 20 | 19 | 16 | 16 | 16 | 17 | 22 | 25 | 24 | 22 | 19 |
Feels °C | 8 | 11 | 13 | 12 | 11 | 11 | 11 | 11 | 15 | 17 | 17 | 16 | 13 | 14 | 14 | 15 | 21 | 23 | 22 | 20 | 18 |
Swell 1 Height (m) Direction Period (s) | SW 11 | SW 11 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 12 |
| kJ | 713 | 726 | 961 | 796 | 864 | 736 | 712 | 700 | 448 | 407 | 978 | 1423 | 1527 | 1591 | 1452 | 1367 | 1110 | 1030 | 904 | 822 | 657 |
Swell 2 Height (m) Direction Period (s) | W 20 | SW 20 | SW 18 | SW 18 | WSW 18 | SW 16 | SW 16 | — | SW 14 | SW 14 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 7 | 15 | 12 | 49 | 31 | 91 | 127 | — | 301 | 350 | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 6 | SSE 6 | SSE 7 | SE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 6 | SSE 6 | SSE 6 | SSE 7 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 7 | SSE 6 |
| kJ | 209 | 277 | 458 | 303 | 180 | 123 | 120 | 134 | 104 | 136 | 262 | 342 | 229 | 145 | 145 | 118 | 91 | 111 | 218 | 261 | 160 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 13 | 10 | 8 | 1 | 1 | 0 | 0 | 0 | 0 | 6 | 18 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 8 | 1 | 1 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Thermopylae surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest