Thermopylae Surf Break

Lat Long: 33.90° S 18.40° E

Thermopylae Surf Forecast and Surf Report

Issued: 1 am 10 Oct 2026 (local time)

Forecast update in  hr  min

Today's Thermopylae sea temperature is
13.1°C
2.8° 

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


Thermopylae surf forecast from 10 Oct 2026:

  • Best quality surf: Saturday 10 Oct, 11AM (local time) - 7.5ft (2.3m), 12s period, SW swell with glassy winds.
  • Most powerful swell: Saturday 17 Oct, 5AM (local time) - 16ft (5.0m), 16s period, SW swell with 13,920 kJ wave energy.
  • Next surfable swell (1★+): Saturday 10 Oct, 11AM (local time) - 7.5ft (2.3m), 12s period with SW 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 Saturday (Oct 10) at 11AM. The primary swell is predicted to be 2.3m and 12s period with a secondary swell of 1.2m and 14s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Thermopylae in the next 16 days are 5.0m 16s and forecast to arrive on Saturday (Oct 17) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Thursday (Oct 15) at 5AM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Sat 10th Oct)7.5ft (2.3m) 12s
Best Surf11AM (Sat 10th Oct)7.5ft (2.3m) 12s
Most Powerful 5AM (Sat 17th Oct)16ft (5.0m) 16s

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


Short Range Forecast

Mostly dry. Warm (max 20°C on Sat afternoon, min 14°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 17°C on Tue afternoon, min 12°C on Wed night). Wind will be generally light.

Saturday
10
Sunday
11
Monday
12
Tuesday
13
Wednesday
14
Thursday
15
Friday
16
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
2
3
4
3
3
1
2
3
3
2
3
3
2
3
4
4
4
0
2
7
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.3
SW
12
2.2
SW
13
2.1
SW
13
2
SW
12
1.9
SW
12
1.9
SW
12
2.1
WSW
11
2.2
WSW
11
2.1
WSW
10
2
WSW
10
1.7
WSW
9
1.7
WSW
10
2.5
SW
13
2.5
WSW
13
3
SW
13
3.5
WSW
14
3
WSW
14
2.5
W
12
3
W
12
2.5
W
12
5
SW
17
Wave Graph
Metric surfscale
Energy kJ
1398
1684
1387
1188
1042
929
1027
1122
782
688
508
576
2078
2422
3468
4479
3403
1825
2128
1623
13228
Wind (km/h)
5
SW
15
SSW
5
S
5
WSW
10
SSW
10
NNW
30
NNW
20
NW
5
SSW
5
W
15
SW
5
S
15
NW
20
WNW
15
N
15
NW
15
NW
15
N
25
NW
15
NW
20
S
Wind State
glassy
cross
cross
on
cross
cross-on
cross
cross-on
glassy
on
cross-on
glassy
cross-on
cross-on
cross
cross-on
cross-on
cross
cross-on
cross-on
cross
High Tide
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
5:27AM1.50m
5:32PM1.49m
6:02AM1.41m
6:05PM1.37m
Low Tide
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
11:19AM0.64m
11:40PM0.60m
11:55AM0.75m
00:18AM0.70m
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
part cloud
clear
clear
part cloud
cloud
clear
part cloud
clear
clear
clear
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
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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—
6:05
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6:03
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<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
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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—
6:59
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—
7:00
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 mm
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
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Temp °C
19
20
17
19
19
17
17
17
16
16
17
15
14
15
14
16
17
15
18
17
16
Feels °C
19
18
16
18
17
16
12
13
15
15
15
13
11
11
11
13
14
14
13
13
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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