Thermopylae Surf Break

Lat Long: 33.90° S 18.40° E

Thermopylae 48 hour detailed Surf Forecast

Issued: 7 pm 15 Sep 2026 (local time)

Forecast update in  hr  min

Today's Thermopylae sea temperature is
13.0°C
2.6° 

Thermopylae surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Thermopylae today (15 Sep):

  • Afternoon surf: Afternoon surf (15 Sep, local time) - 3.5ft (1.1m), 16s period with SW swell.
  • Evening surf: Evening surf (15 Sep, local time) - 7ft (2.1m), 15s period with SW swell.

The current surf forecast for Thermopylae at 11PM is: 2.5m 15s primary swell from a Southwest direction and 1.7m 8s secondary swell from a Northwest direction (forecast issued at 07:00pm September 15). The wind direction is predicted to be cross-onshore.

Time (SAST) & DateWave HeightWave Period
Morning (15 Sep)--
Afternoon (15 Sep)3.5ft (1.1m)16s
Evening (15 Sep)7ft (2.1m)15s

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


Short Range Forecast

Heavy rain (total 22mm), heaviest during Tue night. Very mild (max 18°C on Fri afternoon, min 12°C on Tue night). Winds increasing (light winds from the SSW on Tue night, strong winds from the SSE by Thu afternoon).

Tue
15
Wednesday
16
Thursday
17
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
Rating
(10 max)
0
1
2
4
4
3
2
1
1
1
2
1
2
2
1
1
1
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.4
SW
16
1.8
SW
15
2.5
SW
15
3
SW
14
3
WSW
14
2.5
WSW
13
2.5
SW
13
2.5
SW
13
1.7
SW
13
1.8
SW
13
2.1
SW
13
2.1
SW
13
2.1
SW
12
2.1
SW
12
2.1
SW
12
2
SW
12
1.9
SW
12
1.8
SW
12
1.7
SW
12
Wave Graph
Metric surfscale
Energy kJ
1001
1417
2662
3383
3162
2576
2494
2456
999
1069
1395
1446
1229
1189
1180
1111
945
851
765
Wind (km/h)
40
NNW
30
NNW
15
WSW
15
SSW
25
SSE
30
SSE
35
SSE
40
SSE
40
SSE
40
SE
35
SE
35
SE
35
SE
35
SE
40
SE
40
SE
45
SSE
40
SE
35
SE
Wind State
cross
cross
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
5:38PM1.62m
5:57AM1.48m
6:09PM1.50m
6:32AM1.36m
6:43PM1.36m
Low Tide
11:46PM0.52m
11:50AM0.60m
00:18AM0.63m
12:24PM0.73m
cloud
light rain
heavy rain
mod rain
light rain
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:45
6:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:37
6:37
6:37
 mm
4
11
6
1
Temp °C
15
14
13
12
13
14
14
15
15
14
13
12
12
13
15
17
16
14
13
Feels °C
8
9
10
10
8
7
6
6
7
6
6
4
5
5
6
8
7
6
6
  • 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
How to use the Wavefinder 

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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