Thermopylae surf break

Thermopylae surfForecast / Cape Town / South Africa

information circle12 Day Weather and Surf, issued 7 am Wednesday 02 Jul 2025 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
15.2° C
(Which is slightly cooler than normal)


Best Forecast Surf Conditions for Thermopylae this week:

The surf forecast for Thermopylae over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Jul 02) at 5PM. The primary swell is predicted to be 2.5m and 12s period with a secondary swell of 0.6m and 17s. The wind is predicted to be cross-shore as the swell arrives.

The most powerful waves expected at Thermopylae in the next 12 days are 4.0m 14s and forecast to arrive on Saturday (Jul 05) at 5PM. Winds are predicted to be onshore at the time the swell arrives.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Wed 2nd Jul)8ft (2.5m) 12s
Best Surf11AM (Sat 5th Jul)13ft (4.0m) 14s
Most Powerful 5PM (Sat 5th Jul)13ft (4.0m) 14s

Table - best surf conditions forecast for Thermopylae over the next 12 days.

Updates in  hr  min  s Forecast update imminent
Wednesday
02
Thursday
03
Friday
04
Saturday
05
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
Thursday
10
Friday
11
Saturday
12
Sunday
13
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
3
SW
2.5
WSW
2.3
WSW
2.5
WSW
2.4
WSW
2.5
SW
2
SW
3
WNW
4
WSW
4
SW
4
SW
3.5
SW
3.5
SSW
3
SSW
3
SSW
3
SSW
3
SSW
2.5
S
2.4
SSW
2.1
S
3
SW
3.5
SW
4
SW
3
SW
3
SW
1.9
SW
4.5
WSW
4.5
SW
4.5
SW
4
WSW
4
SW
3.5
SW
2.5
SW
2
SW
1.8
SW
3
SW
Period(s) (?)13121214141313812141414131313161615141413141413131312141413131312121211
Wave
Graph
(?)Metric surfscale
Energy (?)2919249422713029285225561600183441316132670563565087425737375122502330922477294133954680552034152835194011985821875225688498939432107111210272505
Wind
(km/h)
5
NNE
10
S
0
NNW
35
SSW
30
WSW
15
WNW
40
NNW
45
NNW
10
WSW
15
NNW
20
W
20
WSW
25
WSW
25
SW
5
SSW
10
NE
5
WNW
10
NNE
10
NNW
10
NW
10
NNW
10
N
5
NW
10
N
10
N
10
NNW
15
N
30
NNW
35
NNW
45
WNW
25
SW
15
W
5
N
5
NNE
5
W
5
WNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
crossglasscrosscross-
on
cross-
on
crosscrossoncross-
on
oncross-
on
cross-
on
cross-
on
glasscross-
off
oncross-
off
crosscross-
on
crosscrosscross-
on
crosscrosscross-
on
crosscrosscross-
on
oncross-
on
onglasscross-
off
onglass
High Tide
/ height (m)
8:17AM
1.28
8:48PM
1.43
9:20AM
1.23
9:48PM
1.39
10:33AM
1.22
10:53PM
1.37
11:46AM
1.24
11:54PM
1.39
12:46PM
1.30
12:47AM
1.42
1:34PM
1.37
1:32AM
1.47
2:15PM
1.45
2:13AM
1.52
2:51PM
1.52
2:51AM
1.57
3:26PM
1.59
3:28AM
1.61
3:59PM
1.65
4:05AM
1.63
4:34PM
1.69
4:43AM
1.63
5:10PM
1.72
Low Tide
/ height (m)
2:17PM
0.71
3:25AM
0.73
3:17PM
0.76
4:30AM
0.74
4:25PM
0.80
5:33AM
0.71
5:34PM
0.80
6:28AM
0.66
6:33PM
0.77
7:14AM
0.60
7:24PM
0.72
7:55AM
0.53
8:08PM
0.66
8:32AM
0.47
8:47PM
0.60
9:07AM
0.42
9:25PM
0.54
9:41AM
0.38
10:03PM
0.49
10:16AM
0.36
10:41PM
0.46
10:51AM
0.36
11:20PM
0.44
Wednesday
02
Thursday
03
Friday
04
Saturday
05
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
Thursday
10
Friday
11
Saturday
12
Sunday
13
Sunrise7:52--7:52--7:52--7:52--7:50--7:50--7:50--7:50--7:50--7:50--7:50--7:50--
Sunset-5:47--5:49--5:49--5:49--5:50--5:50--5:51--5:51--5:52--5:52--5:52--5:53-
light raincloudrain showersheavy rainmod rainrain showerspart cloudlight rainheavy rainlight rainlight rainrain showersrain showersrain showerspart cloudpart cloudclearclearpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudcloudpart cloudrain showersrain showersrain showersrain showersrain showerspart cloudpart cloudclearclearclear
Rain (mm)
2-61164-11125731------------112141-----
Temp. °C151616131314141514141414141313121313111313131415141615151616141313111212
Feels °C (?)15161612811661211997681010118101010121412151411109881081010

Short Range Forecast: Heavy rain (total 41mm), heaviest during Thu morning. Very mild (max 16°C on Wed afternoon, min 12°C on Thu morning). Winds increasing (calm on Wed night, strong winds from the NNW by Fri afternoon).

Days 3-6 Weather Summary Moderate rain (total 18mm), heaviest on Sat afternoon. Very mild (max 14°C on Sat morning, min 10°C on Mon night). Wind will be generally light.

Days 6-9 Weather Summary Some drizzle, heaviest during Thu night. Very mild (max 16°C on Thu afternoon, min 10°C on Tue morning). Wind will be generally light.

Long Range Forecast: Moderate rain (total 18mm), heaviest on Fri night. Very mild (max 16°C on Fri afternoon, min 11°C on Sat night). Winds decreasing (strong winds from the WNW on Fri night, calm by Sun night).

  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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 12 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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