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Surf Forecasts:
Thermopylae surfForecast / Cape Town / South Africa
48hr Weather and Surf, issued 7 am Monday 08 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
13.6° C
(Which is 5.1°C colder than average for this time of year)How big are the waves at Thermopylae today?
The current surf forecast for Thermopylae at 1PM is: 1.8m 12s primary swell from a Southwest direction and 0.1m 18s secondary swell from a Southwest direction (forecast issued at 07:00am December 08). The wind direction is predicted to be cross-shore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (08 Dec) | 6ft (1.8m) | 12s |
| Afternoon (08 Dec) | 6ft (1.8m) | 12s |
| Evening (08 Dec) | 6.5ft (2.0m) | 12s |
Table - waves today at Thermopylae. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 08 | Tuesday 09 | Wednesday 10 | Thu 11 | |||||||||||||||||||||
| 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) (?) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 10 | 10 | 10 | 10 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1111 | 944 | 869 | 944 | 1007 | 1058 | 1040 | 1092 | 1073 | 1035 | 947 | 1110 | 866 | 743 | 701 | 640 | 606 | 638 | 478 | 469 | 384 | 337 | 330 | 290 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross | cross | cross | cross | cross | cross- off | cross | cross | cross | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | cross | cross- off | cross- off | cross- off |
High Tide / height (m) | 5:32AM 1.72 | 5:48PM 1.60 | 6:23AM 1.65 | 6:41PM 1.48 | 7:18AM 1.57 | 7:42PM 1.37 | ||||||||||||||||||
Low Tide / height (m) | 11:45AM 0.53 | 12:00AM 0.48 | 12:43PM 0.61 | 12:52AM 0.59 | 1:49PM 0.69 | 1:52AM 0.69 | ||||||||||||||||||
Monday 08 | Tuesday 09 | Wednesday 10 | Thu 11 | |||||||||||||||||||||
| Sunrise | - | 5:28 | - | - | - | - | - | - | - | 5:28 | - | - | - | - | - | - | - | 5:28 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 7:47 | - | - | - | - | - | - | - | 7:47 | - | - | - | - | - | - | - | 7:49 | - | - | - |
 |  | | | | | |  | | |  | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 17 | 18 | 20 | 21 | 21 | 20 | 19 | 19 | 20 | 21 | 21 | 20 | 19 | 18 | 17 | 17 | 16 | 18 | 23 | 24 | 24 | 23 | 21 | 19 |
| Feels °C (?) | 16 | 16 | 17 | 17 | 18 | 18 | 18 | 18 | 20 | 20 | 19 | 16 | 14 | 14 | 13 | 14 | 14 | 16 | 21 | 20 | 21 | 21 | 19 | 18 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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