Thermopylae surf break

Thermopylae surfForecast / Cape Town / South Africa

information circle48hr Weather and Surf, issued 1 pm Monday 20 Apr 2026 SAST
Forecast 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 1.4°C colder than average for this time of year)

How big are the waves at Thermopylae today?

The current surf forecast for Thermopylae at 9PM is: 4.0m 14s primary swell from a Southwest direction (forecast issued at 01:00pm April 20). The wind direction is predicted to be cross-onshore.

Time (SAST) & DateWave HeightWave Period
Morning (20 Apr)15ft (4.5m)13s
Afternoon (20 Apr)15ft (4.5m)14s
Evening (20 Apr)13ft (4.0m)14s

Table - waves today at Thermopylae. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM
Rating
(10 max)
0
0
0
4
3
3
3
3
0
7
0
4
4
4
8
8
7
8
8
8
7
6
5
5
Swell
Height Map
Wave Height (m) & direction (?)
4.5
SW
4.5
SW
4
SW
4
SW
3.5
SW
3.5
SW
3
SW
3
SW
3
SW
4
SW
3.5
SW
3.5
SSW
4
SSW
4
SSW
4.5
SSW
5
SSW
5
SSW
4.5
SSW
4.5
SSW
4.5
SSW
4
SSW
3.5
SSW
3.5
SSW
3
SSW
Period(s) (?)141414141313131312121212121314151616161616151414
Wave
Graph
(?)Metric surfscale
Energy kJ (?)7364693764515502476739433409315931044420402539724301569787601044411147110091022189707372576845553911
Wind
(km/h)
20
WNW
25
NW
25
NW
20
NW
15
NW
15
NNW
15
NNW
15
NNW
25
NNW
15
WSW
20
SSW
15
S
15
S
20
S
20
SSE
20
SE
25
SE
20
SSE
25
SSE
20
SE
15
SE
15
ESE
10
ESE
10
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
crosscross-
on
oncross-
on
crosscrosscrosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offoff
High Tide
/ height (m)
5:26PM
1.71
5:42AM
1.71
6:16PM
1.60
6:35AM
1.55
7:17PM
1.49
7:45AM
1.39
Low Tide
/ height (m)
11:12AM
0.32
11:28PM
0.47
11:58AM
0.45
12:22AM
0.60
12:54PM
0.59
1:36AM
0.72
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Sunrise-------7:13-------7:13-------7:13
Sunset--6:17-------6:15-------6:15-----
light rain
rain showers
part cloud
rain showers
part cloud
part cloud
part cloud
light rain
light rain
light rain
cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
11-1---112--------------
Temp. °C161616161615151516161717171616151618181714131314
Feels °C (?)111110121211121212131313131112101113131311101112
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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.


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