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Thermopylae Surf Forecast
/ Cape Town (70 surf breaks) /
Surf Forecasts:
Thermopylae surfForecast / Cape Town / South Africa
48hr Weather and Surf, issued 7 pm Sunday 26 Apr 2026 SASTForecast update in hr min s Forecast update imminent
Thermopylae surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Thermopylae sea temperature is
16.5° C
(Which is 1.1°C colder than average for this time of year)How big are the waves at Thermopylae today?
The current surf forecast for Thermopylae at 10PM is: 3.5m 10s primary swell from a Southwest direction and 0.7m 14s secondary swell from a West-southwest direction, 0.1m 12s secondary swell from a Northwest direction (forecast issued at 07:00pm April 26). The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (26 Apr) | - | - |
| Afternoon (26 Apr) | 6.5ft (2.0m) | 8s |
| Evening (26 Apr) | 8ft (2.5m) | 8s |
Table - waves today at Thermopylae. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 6mm), mostly falling on Sun night. Very mild (max 17°C on Wed afternoon, min 12°C on Wed morning). Winds decreasing (fresh winds from the SW on Sun night, light winds from the SE by Wed morning). | ||||||||||||||||||||||||
Sun 26 | Monday 27 | Tuesday 28 | Wed 29 | |||||||||||||||||||||
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 | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
WSW 8 | WSW 8 | SW 10 | SW 11 | SW 11 | SW 11 | WSW 12 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 11 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 11 | SSE 11 | |
522 | 730 | 2085 | 2875 | 3478 | 2931 | 1723 | 1006 | 1006 | 840 | 738 | 751 | 865 | 766 | 751 | 768 | 867 | 980 | 1012 | 944 | 833 | 819 | 764 | 681 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross | cross | cross | cross | 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 | |
High Tide | 00:36AM1.59m | 1:09PM1.49m | 1:19AM1.66m | 1:47PM1.56m | 1:54AM1.72m | |||||||||||||||||||
Low Tide | 6:24PM0.65m | 7:05AM0.53m | 7:09PM0.58m | 7:43AM0.45m | 7:46PM0.52m | 8:16AM0.41m | ||||||||||||||||||
 |  |  | |  |  | |  | |  | | | |  | | | |  | | | | | | | |
 | — | — | — | — | 7:16 | — | — | — | — | — | — | — | 7:18 | — | — | — | — | — | — | — | 7:18 | — | — | — |
 | 6:10 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:08 | — | — | — | — | — | — | 6:07 |
1 | 2 | 1 | 2 | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 16 | 14 | 14 | 15 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 15 | 14 | 13 | 13 | 12 | 14 | 17 |
11 | 6 | 8 | 9 | 8 | 9 | 10 | 10 | 10 | 11 | 12 | 11 | 11 | 10 | 11 | 10 | 10 | 10 | 10 | 10 | 11 | 10 | 12 | 14 | |
Swell 1 Height (m) Direction Period (s) | SW 15 | S 14 | WSW 14 | NW 12 | SW 11 | SW 11 | WSW 12 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 11 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 11 | SSE 11 |
 kJ | 54 | 16 | 161 | 6 | 3040 | 2931 | 1723 | 1006 | 1006 | 840 | 738 | 751 | 865 | 766 | 751 | 768 | 867 | 980 | 1012 | 944 | 833 | 819 | 764 | 681 |
Swell 2 Height (m) Direction Period (s) | S 15 | NW 12 | NW 12 | — | — | WSW 12 | S 10 | WSW 10 | WSW 12 | WSW 10 | WSW 11 | SW 11 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 |
| kJ | 17 | 6 | 6 | — | — | 1236 | 918 | 983 | 905 | 661 | 634 | 458 | 377 | 377 | 322 | 322 | 260 | 226 | 305 | 273 | 245 | 177 | 208 | 154 |
Swell 3 Height (m) Direction Period (s) | NW 12 | — | — | — | — | — | — | NW 11 | NW 11 | SW 17 | SW 17 | NW 11 | SW 15 | SW 15 | S 13 | SW 15 | S 12 | S 12 | SW 16 | SSW 11 | S 11 | SW 14 | SW 14 | SW 14 |
| kJ | 6 | — | — | — | — | — | — | 5 | 5 | 11 | 11 | 5 | 9 | 9 | 14 | 35 | 46 | 46 | 41 | 41 | 38 | 130 | 127 | 228 |
Wind waves Height (m) Direction Period (s) | WSW 8 | WSW 8 | SW 10 | SW 11 | SW 11 | S 10 | S 10 | — | — | — | — | — | — | — | — | — | — | SE 4 | SE 4 | — | SE 4 | SE 4 | — | SE 5 |
| kJ | 522 | 730 | 2085 | 2875 | 3478 | 1170 | 1183 | — | — | — | — | — | — | — | — | — | — | 11 | 20 | — | 39 | 34 | — | 35 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 24 | 344 | 344 | 139 | 937 | 139 | 139 | 139 | 27 | 1575 | 8 | 1 | 0 | 6 | 6 | 1 | 1 | 13 | 115 | 1 | 1 | 0 | 0 | 0 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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