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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 1 am Monday 23 Mar 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
16.1° C
(Which is 3.1°C colder than average for this time of year)How big are the waves at Thermopylae today?
The current surf forecast for Thermopylae at 4AM is: 1.8m 12s primary swell from a South-southwest direction and 0.1m 10s secondary swell from a West direction (forecast issued at 01:00am March 23). An open ocean swell of 1.3m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 Mar) | 6ft (1.8m) | 12s |
| Afternoon (23 Mar) | 10ft (3.0m) | 15s |
| Evening (23 Mar) | 7.5ft (2.3m) | 14s |
Table - waves today at Thermopylae. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 23 | Tuesday 24 | Wednesday 25 | ||||||||||||||||||||||
| 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) (?) | 11 | 11 | 12 | 12 | 16 | 15 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 521 | 594 | 993 | 936 | 3216 | 3874 | 2379 | 2280 | 1800 | 1638 | 1390 | 1349 | 1134 | 1117 | 1152 | 1081 | 919 | 774 | 761 | 669 | 585 | 583 | 435 | 372 |
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- off | cross- off | cross- off | cross- off | off | cross- off | glass | cross- on | cross- on | cross | cross | cross | cross | cross | cross | cross- on | on | on |
High Tide / height (m) | 5:53AM 1.77 | 6:21PM 1.59 | 6:40AM 1.61 | 7:16PM 1.46 | 7:42AM 1.45 | |||||||||||||||||||
Low Tide / height (m) | 11:35PM 0.44 | 12:08PM 0.45 | 12:20AM 0.57 | 12:59PM 0.60 | 1:20AM 0.72 | 2:14PM 0.74 | ||||||||||||||||||
Monday 23 | Tuesday 24 | Wednesday 25 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:50 | - | - | - | - | - | - | - | 6:52 | - | - | - | - | - | - | - | 6:52 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:53 | - | - | - | - | - | - | - | 6:52 | - | - | - | - | - | - | - | 6:51 | - |
 | | |  | | | | | | | | | | | | | |  | |  |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 18 | 18 | 17 | 17 | 22 | 26 | 26 | 23 | 21 | 20 | 20 | 22 | 26 | 26 | 25 | 21 | 20 | 17 | 19 | 19 | 20 | 20 | 20 | 19 |
| Feels °C (?) | 14 | 15 | 13 | 14 | 19 | 23 | 22 | 20 | 19 | 19 | 19 | 22 | 27 | 25 | 25 | 20 | 19 | 16 | 18 | 17 | 18 | 19 | 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)
FREE! Surf-Forecast.com widget for your website
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