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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 Thursday 23 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
16.2° C
(Which is 1.5°C colder than average for this time of year)How big are the waves at Thermopylae today?
The current surf forecast for Thermopylae at 12AM is: 1.9m 13s primary swell from a South-southwest direction and 1.0m 7s secondary swell from a Southeast direction (forecast issued at 07:00pm April 23). The wind direction is predicted to be cross-offshore and the swell rating is 4.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (24 Apr) | - | - |
| Afternoon (24 Apr) | 8ft (2.4m) | 13s |
| Evening (24 Apr) | 6.5ft (2.0m) | 13s |
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. Warm (max 24°C on Fri afternoon, min 14°C on Sun afternoon). Wind will be generally light. | ||||||||||||||||||||||||
Thu 23 | Friday 24 | Saturday 25 | Sun 26 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 10 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | WSW 8 | SW 9 | |
1844 | 1488 | 1175 | 916 | 680 | 514 | 411 | 320 | 259 | 230 | 158 | 137 | 174 | 202 | 172 | 166 | 160 | 182 | 175 | 154 | 120 | 98 | 357 | 393 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross-off | cross-off | cross-off | off | off | glassy | cross-on | cross-off | cross-off | cross-off | glassy | cross | cross-off | cross | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-on | on | |
High Tide | 8:40PM1.41m | 9:24AM1.30m | 10:20PM1.42m | 11:10AM1.32m | 11:41PM1.49m | 12:20PM1.40m | ||||||||||||||||||
Low Tide | 2:12PM0.71m | 3:24AM0.78m | 3:55PM0.76m | 5:07AM0.72m | 5:23PM0.72m | 6:16AM0.62m | ||||||||||||||||||
 |  | | | | | | | | | | | | | |  | | | | | |  |  |  | |
 | — | — | — | — | 7:15 | — | — | — | — | — | — | — | 7:16 | — | — | — | — | — | — | — | 7:16 | — | — | — |
 | 6:14 | — | — | — | — | — | — | — | 6:13 | — | — | — | — | — | — | — | 6:12 | — | — | — | — | — | — | 6:10 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 8 | |
Temp °C | 20 | 20 | 19 | 18 | 18 | 18 | 22 | 24 | 23 | 22 | 22 | 21 | 18 | 17 | 19 | 19 | 18 | 17 | 16 | 15 | 15 | 16 | 17 | 14 |
16 | 17 | 16 | 15 | 14 | 15 | 19 | 20 | 20 | 19 | 19 | 19 | 15 | 15 | 16 | 17 | 17 | 17 | 15 | 13 | 12 | 13 | 13 | 10 | |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 10 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 6 | W 9 | SW 9 |
 kJ | 1844 | 1488 | 1175 | 916 | 680 | 514 | 411 | 320 | 259 | 230 | 158 | 137 | 174 | 202 | 172 | 166 | 160 | 182 | 175 | 154 | 120 | 54 | 43 | 393 |
Swell 2 Height (m) Direction Period (s) | SE 7 | — | SE 7 | — | W 16 | W 15 | NW 15 | NW 15 | NW 15 | S 10 | SW 12 | S 10 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | W 3 | SW 17 | WSW 4 | WSW 5 | WSW 9 | SW 15 | SW 15 |
| kJ | 59 | — | 99 | — | 5 | 4 | 8 | 8 | 8 | 8 | 72 | 77 | 29 | 26 | 15 | 15 | 8 | 1 | 11 | 6 | 25 | 98 | 55 | 55 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 9 | W 9 | W 15 | S 10 | S 10 | W 14 | NW 13 | NW 13 | NW 13 | NW 13 | SSE 8 | S 8 | SW 16 | SW 16 | SW 16 | S 16 | S 15 |
| kJ | — | — | — | — | — | — | — | 2 | 2 | 4 | 18 | 8 | 4 | 7 | 7 | 7 | 7 | 6 | 5 | 41 | 41 | 38 | 19 | 18 |
Wind waves Height (m) Direction Period (s) | — | — | SE 7 | SE 7 | SE 7 | SE 7 | — | — | — | — | — | — | — | — | N 3 | NNW 3 | NW 3 | NNW 3 | WNW 4 | NNW 3 | NNW 3 | NNW 4 | WSW 8 | W 8 |
| kJ | — | — | 139 | 115 | 89 | 62 | — | — | — | — | — | — | — | — | 2 | 3 | 2 | 1 | 5 | 3 | 6 | 19 | 357 | 282 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 26 | 0 | 0 | 0 | 0 | 6 | 0 | 31 | 17 | 17 | 17 | 6 | 11 | 31 | 83 | 191 | 26 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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