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Surf Forecasts:
Thermopylae surfForecast / Cape Town / South Africa
48hr Weather and Surf, issued 7 pm Saturday 06 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
14.6° C
(Which is 4.1°C colder than average for this time of year)How big are the waves at Thermopylae today?
The current surf forecast for Thermopylae at 11PM is: 1.4m 13s primary swell from a Southwest direction and 0.4m 8s secondary swell from a Southwest direction (forecast issued at 07:00pm December 06). An open ocean swell of 1.8m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (06 Dec) | - | - |
| Afternoon (06 Dec) | 1.5ft (0.5m) | 14s |
| Evening (06 Dec) | 4.5ft (1.4m) | 13s |
Table - waves today at Thermopylae. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 06 | Sunday 07 | Monday 08 | Tuesday 09 | |||||||||||||||||||||
| 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 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 347 | 623 | 680 | 825 | 1144 | 1588 | 1547 | 1547 | 1125 | 1031 | 960 | 869 | 1047 | 961 | 805 | 928 | 1007 | 1058 | 1040 | 1073 | 981 | 1017 | 1048 | 981 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | cross | cross | cross | cross | cross- off | cross- off | cross | cross | cross |
High Tide / height (m) | 4:11PM 1.82 | 4:44AM 1.78 | 4:59PM 1.72 | 5:32AM 1.72 | 5:48PM 1.60 | 6:23AM 1.65 | ||||||||||||||||||
Low Tide / height (m) | 10:28PM 0.30 | 10:52AM 0.45 | 11:13PM 0.38 | 11:45AM 0.53 | 12:00AM 0.48 | 12:43PM 0.61 | ||||||||||||||||||
Saturday 06 | Sunday 07 | Monday 08 | Tuesday 09 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 5:28 | - | - | - | - | - | - | - | 5:28 | - | - | - | - | - | - | - | 5:28 | - | - |
| Sunset | 7:45 | - | - | - | - | - | - | - | 7:46 | - | - | - | - | - | - | - | 7:47 | - | - | - | - | - | - | - |
 |  | | | | | | |  |  | | | | | | | | | | | | |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 19 | 18 | 18 | 16 | 15 | 17 | 21 | 22 | 20 | 19 | 18 | 18 | 17 | 18 | 21 | 21 | 21 | 20 | 19 | 19 | 19 | 20 | 21 | 22 |
| Feels °C (?) | 12 | 12 | 13 | 13 | 13 | 15 | 19 | 18 | 15 | 15 | 15 | 16 | 15 | 16 | 18 | 17 | 17 | 18 | 18 | 19 | 20 | 20 | 19 | 19 |
- 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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