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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 Saturday 11 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
16.7° 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 4AM is: 1.7m 12s primary swell from a Southwest direction and 0.3m 13s secondary swell from a South-southeast direction (forecast issued at 07:00pm April 11). The wind direction is predicted to be cross-offshore and the swell rating is 3.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Apr) | 5ft (1.6m) | 12s |
| Afternoon (12 Apr) | 5ft (1.5m) | 11s |
| Evening (12 Apr) | 4.5ft (1.3m) | 11s |
Table - waves today at Thermopylae. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | |||||||||||||||||||||
| 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 | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 932 | 812 | 773 | 827 | 800 | 736 | 650 | 573 | 483 | 422 | 338 | 293 | 254 | 216 | 216 | 240 | 623 | 715 | 767 | 976 | 932 | 987 | 936 | 1044 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- off | cross- off | cross | cross- off | cross- off | cross | cross | cross | cross | cross- off | cross- off | cross- off | cross- off | cross | cross- on | cross | cross- off | cross- off | cross | glass | on | cross- on | cross- on |
High Tide / height (m) | 11:36PM 1.35 | 12:07PM 1.32 | 12:28AM 1.48 | 12:54PM 1.45 | 1:07AM 1.62 | 1:33PM 1.58 | ||||||||||||||||||
Low Tide / height (m) | 5:06PM 0.83 | 6:03AM 0.78 | 6:09PM 0.73 | 6:48AM 0.63 | 6:54PM 0.61 | 7:26AM 0.49 | ||||||||||||||||||
Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 7:05 | - | - | - | - | - | - | - | 7:07 | - | - | - | - | - | - | - | 7:07 | - | - |
| Sunset | 6:29 | - | - | - | - | - | - | - | 6:27 | - | - | - | - | - | - | - | 6:25 | - | - | - | - | - | - | - |
 |  | | | | | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 20 | 19 | 18 | 18 | 18 | 18 | 19 | 20 | 20 | 18 | 18 | 17 | 17 | 17 | 19 | 21 | 21 | 20 | 19 | 18 | 18 | 17 | 19 | 19 |
| Feels °C (?) | 18 | 18 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 16 | 17 | 17 | 17 | 17 | 19 | 20 | 20 | 20 | 19 | 18 | 19 | 17 | 18 | 17 |
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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.
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