Thermopylae Surf Break

Lat Long: 33.90° S 18.40° E

Thermopylae Surf Forecast and Surf Report

Issued: 7 am 08 Oct 2026 (local time)

Forecast update in  hr  min

Today's Thermopylae sea temperature is
13.2°C
2.7° 

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


Thermopylae surf forecast from 8 Oct 2026:

  • Best quality surf: Friday 9 Oct, 8AM (local time) - 11ft (3.5m), 13s period, WSW swell with cross-offshore winds.
  • Most powerful swell: Friday 9 Oct, 2AM (local time) - 11ft (3.5m), 13s period, SW swell with 3,788 kJ wave energy.
  • Next surfable swell (1★+): Friday 9 Oct, 8AM (local time) - 11ft (3.5m), 13s period with WSW swell.

Best Forecast Surf Conditions for Thermopylae this week:

The surf forecast for Thermopylae over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Oct 09) at 8AM. The primary swell is predicted to be 3.5m and 13s period with a secondary swell of 0.5m and 3s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Thermopylae in the next 16 days are 3.5m 13s and forecast to arrive on Friday (Oct 09) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Saturday (Oct 10) at 8AM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Fri 9th Oct)11ft (3.5m) 13s
Best Surf 8AM (Fri 9th Oct)11ft (3.5m) 13s
Most Powerful 2AM (Fri 9th Oct)11ft (3.5m) 13s

Table - best surf conditions forecast for Thermopylae over the next 16 days.


Short Range Forecast

Mostly dry. Very mild (max 19°C on Sat afternoon, min 13°C on Thu morning). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Mon night. Very mild (max 19°C on Sun morning, min 13°C on Tue night). Wind will be generally light.

Thursday
8
Friday
9
Saturday
10
Sunday
11
Monday
12
Tuesday
13
Wednesday
14
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
3
4
4
3
3
4
3
3
4
3
3
0
0
3
2
2
3
3
3
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3
SW
14
3
SW
14
3.5
SW
13
3
WSW
13
3
WSW
12
2
WSW
12
2.3
SW
12
2.4
SW
13
2.2
SW
13
2.1
SW
12
1.8
SW
12
1.8
SW
12
1.6
WSW
11
1.9
WSW
11
2
WSW
9
2.1
SW
10
2.2
SW
10
2.1
WSW
11
2.1
WSW
13
2.2
WSW
13
2.4
SW
12
Wave Graph
Metric surfscale
Energy kJ
3913
2857
3788
3393
2545
1102
1372
2063
1583
1261
869
836
597
793
658
799
989
980
1481
1597
1795
Wind (km/h)
10
WNW
15
WNW
15
N
10
NW
10
SW
15
SSE
5
SW
15
S
10
S
5
SW
15
SSE
10
NNW
25
NNW
20
NW
10
SW
10
SSW
20
SW
5
SE
10
NW
15
W
5
N
Wind State
on
on
cross
cross-on
cross-on
cross-off
cross-on
cross
cross
cross-on
cross-off
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
glassy
cross-on
on
glassy
High Tide
1:58PM1.78m
2:22AM1.69m
2:33PM1.84m
2:55AM1.73m
3:05PM1.86m
3:26AM1.73m
3:35PM1.84m
3:55AM1.71m
4:05PM1.78m
4:25AM1.66m
4:33PM1.70m
4:55AM1.59m
5:02PM1.60m
Low Tide
8:18PM0.31m
8:24AM0.36m
8:50PM0.27m
8:55AM0.34m
9:20PM0.27m
9:25AM0.35m
9:48PM0.30m
9:53AM0.38m
10:15PM0.35m
10:21AM0.45m
10:42PM0.42m
10:49AM0.53m
11:10PM0.50m
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
rain showers
part cloud
clear
clear
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:13
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6:13
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6:11
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6:09
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—
6:09
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—
6:07
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6:07
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<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
6:52
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—
6:53
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—
6:54
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6:55
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6:57
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6:57
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6:58
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 mm
—
—
—
—
—
—
—
—
—
—
—
—
—
—
2
—
—
—
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Temp °C
14
15
14
16
17
15
18
19
16
19
19
18
18
18
16
16
16
15
16
16
14
Feels °C
11
12
12
14
16
13
18
17
14
18
16
17
14
14
14
14
12
12
13
12
13
  • 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
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Information about the Thermopylae Surf forecast

The above surf forecast table for Thermopylae provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Thermopylae can be found by selecting the local surf guide option on the grey menu. Our Thermopylae surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Thermopylae) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Thermopylae may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Are you planning a holiday in Cape Town? If you are looking for accommodation near Thermopylae, camping, hotels and holiday cottages in Cape Town, consider staying in Cape Town which is 8 km (5 miles) away. Other places in and around Cape Town where you can find information about places to rent, and car hire include Robben Island which is 11 km (7 miles) away, Bellville, Atlantis and Kayamnandi.

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