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Surf Forecasts:
Thermopylae surfForecast / Cape Town / South Africa
48hr Weather and Surf, issued 7 am Monday 15 Dec 2025 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
14.7° C
(Which is 4.4°C colder than average for this time of year)Nearby Cam: 5km away, Clifton 4th beach webcam Live Stream, Cape Town
How big are the waves at Thermopylae today?
The current surf forecast for Thermopylae at 11AM is: 2.5m 12s primary swell from a Southwest direction and 0.2m 15s secondary swell from a West-northwest direction (forecast issued at 07:00am December 15). The wind direction is predicted to be cross-shore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | 8ft (2.5m) | 12s |
| Afternoon (15 Dec) | 8ft (2.5m) | 12s |
| Evening (15 Dec) | 8ft (2.5m) | 12s |
Table - waves today at Thermopylae. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 15 | Tuesday 16 | Wednesday 17 | Thu 18 | |||||||||||||||||||||
| 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 | 11 PM | 2 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 11 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 15 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1656 | 1870 | 1902 | 2073 | 1999 | 1999 | 1928 | 1801 | 1682 | 1573 | 1472 | 1402 | 1158 | 2238 | 2222 | 2413 | 2394 | 2176 | 2207 | 1256 | 1182 | 742 | 454 | 379 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross | cross- on | cross | cross | cross- off | cross- off | cross | glass | on | on | on | cross- on | cross- on | cross- on | cross | cross | cross | cross | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 12:30PM 1.51 | 1:10AM 1.41 | 1:12PM 1.54 | 1:48AM 1.47 | 1:49PM 1.58 | |||||||||||||||||||
Low Tide / height (m) | 6:16AM 0.75 | 7:00PM 0.62 | 7:01AM 0.72 | 7:36PM 0.57 | 7:41AM 0.68 | 8:09PM 0.52 | ||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thu 18 | |||||||||||||||||||||
| Sunrise | - | 5:28 | - | - | - | - | - | - | - | 5:28 | - | - | - | - | - | - | - | 5:30 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 7:52 | - | - | - | - | - | - | - | 7:52 | - | - | - | - | - | - | - | 7:53 | - | - | - |
 |  | | | | | | | | |  | | |  | |  | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - |
| Temp. °C | 17 | 18 | 20 | 21 | 21 | 20 | 19 | 18 | 18 | 19 | 20 | 21 | 20 | 20 | 20 | 19 | 18 | 18 | 19 | 19 | 18 | 17 | 17 | 16 |
| Feels °C (?) | 16 | 17 | 18 | 19 | 18 | 18 | 18 | 18 | 19 | 21 | 19 | 20 | 19 | 20 | 21 | 19 | 15 | 14 | 15 | 13 | 11 | 11 | 11 | 11 |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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