- Forecast
- Maps
- Live
- Weather State
- Spot Information
Thermopylae Surf Forecast
/ Cape Town (70 surf breaks) /
Surf Forecasts:
Thermopylae surfForecast / Cape Town / South Africa
48hr Weather and Surf, issued 1 am Wednesday 15 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 1.7°C colder than average for this time of year)How big are the waves at Thermopylae today?
The current surf forecast for Thermopylae at 6AM is: 3.5m 13s primary swell from a West-southwest direction and 0.8m 18s secondary swell from a Southwest direction (forecast issued at 01:00am April 15). The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Apr) | 13ft (4.0m) | 13s |
| Afternoon (15 Apr) | 13ft (4.0m) | 13s |
| Evening (15 Apr) | 15ft (4.5m) | 16s |
Table - waves today at Thermopylae. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 15 | Thursday 16 | Friday 17 | ||||||||||||||||||||||
| 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 | 5 PM | 8 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 14 | 14 | 13 | 13 | 13 | 13 | 16 | 16 | 16 | 16 | 15 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 2582 | 3512 | 4119 | 4863 | 5688 | 5528 | 10779 | 9641 | 8260 | 7207 | 6021 | 4955 | 4222 | 3752 | 3054 | 2681 | 2207 | 2045 | 1736 | 1665 | 1524 | 1302 | 1327 | 1370 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross- off | cross- off | cross- off | glass | glass | on | cross- on | cross- on | glass | cross | cross | cross- off | cross | cross- on | cross- on | cross |
High Tide / height (m) | 1:44AM 1.75 | 2:09PM 1.69 | 2:20AM 1.86 | 2:45PM 1.78 | 2:56AM 1.93 | 3:22PM 1.83 | ||||||||||||||||||
Low Tide / height (m) | 8:02AM 0.35 | 8:09PM 0.40 | 8:37AM 0.25 | 8:45PM 0.32 | 9:13AM 0.20 | |||||||||||||||||||
Wednesday 15 | Thursday 16 | Friday 17 | ||||||||||||||||||||||
| Sunrise | - | - | - | 7:07 | - | - | - | - | - | - | - | 7:09 | - | - | - | - | - | - | - | 7:09 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:23 | - | - | - | - | - | - | - | 6:22 | - | - | - | - | - | - | - | 6:21 | - |
 | |  |  |  |  | |  | | | | | | | | | | |  | | |  |  |  | |
Rain (mm) | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 16 | 7 |
| Temp. °C | 17 | 18 | 18 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 15 | 15 | 17 | 18 | 17 | 17 | 16 | 16 | 15 | 14 | 17 | 16 | 12 | 12 |
| Feels °C (?) | 15 | 15 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 13 | 14 | 16 | 15 | 14 | 15 | 15 | 14 | 11 | 8 | 11 | 9 | 8 | 9 |
- 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