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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 1 pm Saturday 25 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
16.4° C
(Which is 1.3°C colder than average for this time of year)How big are the waves at Thermopylae today?
The current surf forecast for Thermopylae at 6PM is: 0.9m 10s primary swell from a Southwest direction and 0.2m 9s secondary swell from a South-southeast direction, 0.5m 4s secondary swell from a Northwest direction (forecast issued at 01:00pm April 25). The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (25 Apr) | 3ft (0.9m) | 11s |
| Afternoon (25 Apr) | 3ft (0.9m) | 11s |
| Evening (25 Apr) | 3ft (0.9m) | 10s |
Table - waves today at Thermopylae. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 12mm), heaviest on Sun afternoon. Very mild (max 18°C on Sat afternoon, min 14°C on Sun night). Wind will be generally light. | ||||||||||||||||||||||||
Sat 25 | Sunday 26 | Monday 27 | Tue 28 | |||||||||||||||||||||
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 | 2 AM | 5 AM | 8 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SW 11 | SW 11 | SW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | WSW 8 | WSW 8 | WSW 8 | SSW 9 | SW 10 | WSW 11 | WSW 11 | WSW 10 | SW 10 | WSW 12 | S 10 | S 10 | S 11 | S 11 | S 11 | |
172 | 163 | 160 | 182 | 157 | 154 | 120 | 221 | 264 | 385 | 394 | 476 | 707 | 1717 | 1757 | 1628 | 788 | 1102 | 956 | 873 | 867 | 883 | 898 | 1009 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-on | cross-on | on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | |
High Tide | 11:10AM1.32m | 11:41PM1.49m | 12:20PM1.40m | 00:36AM1.59m | 1:09PM1.49m | 1:19AM1.66m | ||||||||||||||||||
Low Tide | 5:23PM0.72m | 6:16AM0.62m | 6:24PM0.65m | 7:05AM0.53m | 7:09PM0.58m | 7:43AM0.45m | ||||||||||||||||||
 | | |  | |  |  |  |  | | |  |  | | | |  | | | | | | | | |
 | — | — | — | — | — | — | 7:16 | — | — | — | — | — | — | — | 7:16 | — | — | — | — | — | — | — | 7:18 | — |
 | — | — | 6:12 | — | — | — | — | — | — | — | 6:10 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | 6:08 |
— | — | — | — | — | — | — | — | 2 | 5 | 2 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 18 | 18 | 18 | 17 | 16 | 16 | 15 | 16 | 16 | 15 | 16 | 15 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
15 | 16 | 16 | 16 | 15 | 14 | 13 | 13 | 13 | 13 | 12 | 10 | 9 | 8 | 8 | 9 | 10 | 10 | 10 | 11 | 12 | 12 | 12 | 12 | |
Swell 1 Height (m) Direction Period (s) | SW 11 | SW 11 | SW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | SW 15 | SW 15 | SW 14 | W 8 | NW 12 | WSW 11 | WSW 11 | WSW 10 | SW 10 | S 10 | S 10 | S 10 | S 11 | S 11 | S 11 |
 kJ | 172 | 163 | 160 | 182 | 157 | 154 | 120 | 221 | 264 | 76 | 54 | 95 | 213 | 6 | 1757 | 1628 | 788 | 1102 | 936 | 873 | 867 | 883 | 898 | 1009 |
Swell 2 Height (m) Direction Period (s) | SSE 9 | SSE 9 | SSE 9 | S 8 | WSW 16 | SW 16 | WSW 5 | SW 16 | SW 15 | S 15 | S 15 | S 14 | SW 13 | W 12 | NW 12 | S 10 | S 10 | S 10 | WSW 12 | WSW 11 | SW 11 | SW 11 | SW 10 | SW 10 |
| kJ | 15 | 15 | 8 | 5 | 27 | 41 | 19 | 38 | 76 | 18 | 17 | 16 | 183 | 3 | 6 | 633 | 656 | 656 | 956 | 700 | 572 | 496 | 370 | 328 |
Swell 3 Height (m) Direction Period (s) | NW 13 | NW 13 | NW 13 | SW 18 | S 8 | S 16 | SW 16 | S 16 | S 16 | NW 12 | NW 12 | NW 12 | S 14 | — | — | NW 12 | WSW 12 | NW 11 | NW 11 | SW 17 | SW 16 | SW 17 | SW 15 | SW 15 |
| kJ | 7 | 7 | 7 | 12 | 1 | 21 | 41 | 20 | 19 | 6 | 6 | 6 | 16 | — | — | 6 | 554 | 5 | 5 | 11 | 11 | 11 | 9 | 9 |
Wind waves Height (m) Direction Period (s) | N 4 | NNW 4 | NW 4 | WNW 4 | WNW 4 | WNW 4 | NNW 3 | NNW 4 | NW 5 | WSW 8 | WSW 8 | WSW 8 | SSW 9 | SW 10 | S 9 | — | — | — | — | — | — | — | — | — |
| kJ | 9 | 13 | 6 | 9 | 13 | 20 | 6 | 25 | 54 | 385 | 394 | 476 | 707 | 1717 | 497 | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 24 | 17 | 17 | 11 | 11 | 11 | 31 | 31 | 24 | 17 | 26 | 346 | 937 | 139 | 1215 | 13 | 27 | 1593 | 27 | 1 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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