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Thermopylae ratings
Quality on a good day: 4.0
Consistency of Surf: 1.6
Difficulty Level: 3.6
Wind and Kite Surfing: 1.0
Crowds: 2.4

Overall: 3.4

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Thermopylae Surf Forecast / Cape Town / South Africa

12 Day Weather and Surf, issued 1 pm Sunday 16 May 2021 SAST
Forecast update in  hr  min  s 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 13.8 °C (Statistics for 16 May 1981-2005 - mean: 17.1 max: 17.9 min: 16.1 °C)
Icon breakBreak
Icon legend buoysLive Wave Height (m)
Icon legend windLive Wind Speed (km/h)
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 13.8 °C (Statistics for 16 May 1981-2005 - mean: 17.1 max: 17.9 min: 16.1 °C)

Eyeball surf reportRecent Eyeball Surf Reports for Cape Town

  1. weather stationWind Update calm at Ottery wx mean that is clean at Muizenberg.

    Muizenberg
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3 h 1 min ago

Light
11 km/h
W
Onshore
Please reload the page to see if there are any updates.


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 Sunday (May 16) at 11PM. The primary swell is predicted to be 1.7m and 10s period with a secondary swell of 0.9m and 10s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Thermopylae in the next 12 days are 4.5m 14s and forecast to arrive on Friday (May 21) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Sun 16th May)5.5ft (1.7m) 10s
Best Surf 2PM (Fri 21st May)15ft (4.5m) 14s
Most Powerful 2PM (Fri 21st May)15ft (4.5m) 14s

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

Updates in  hr  min  s Update imminent
Rating
(10 max)
Swell
Height Map
Wave Height (m) & direction (?)
Period(s) (?)
Wave
Graph
(?)Metric surfscale
Energy (?)
Wind
(km/h)
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
High Tide
/ height (m)
Low Tide
/ height (m)
Summary
Rain (mm)
High °C
Low °C
Chill °C (?)
Sunrise
Sunset
Sun
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Fri
28
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
3445544320000048764534334610987333433
T southafrica.htsgw.metric.12.cc23
T southafrica.htsgw.metric.30.cc23
T southafrica.htsgw.metric.54.cc23
T southafrica.htsgw.metric.78.cc23
T southafrica.htsgw.metric.102.cc23
T southafrica.htsgw.metric.126.cc23
T southafrica.htsgw.metric.150.cc23
T southafrica.htsgw.metric.174.cc23
T southafrica.htsgw.metric.198.cc23
T southafrica.htsgw.metric.222.cc23
T southafrica.htsgw.metric.246.cc23
T southafrica.htsgw.metric.270.cc23
T southafrica.htsgw.metric.294.cc23
1.5
SSW
1.7
SSW
2
SSW
2.4
SSW
2.1
SSW
1.7
SSW
1.4
SSW
1
SSW
1.4
WSW
1.6
W
1.6
WSW
3.5
W
4
WSW
3.5
W
4
WSW
4.5
SW
4
SW
3.5
SW
3
SW
2.2
SW
1.7
SW
1.5
SW
1.3
WSW
2.2
WSW
2
W
3.5
W
5.5
WSW
5.5
WSW
4
WSW
4
WSW
2.3
WSW
1.6
WSW
2.3
SE
2.4
SE
1.1
SW
1.1
SW
1010111212121211999101212121413131212121212131314131414131212881111
502548891160512477705322473084214221934502235633757674958413675245714158226144151544129546561014511750631955181579698650690287273
15
SSW
0
ENE
5
NNE
10
SSW
5
NE
5
NNW
5
W
5
NNW
15
N
25
NNW
40
N
35
WNW
20
WNW
25
WNW
15
WNW
15
SSE
10
SE
5
E
10
S
5
ESE
10
N
5
W
5
NW
20
NNW
15
WNW
10
WNW
10
SW
10
SW
0
S
5
NNW
15
SSW
25
SSE
20
SE
20
SSE
15
SE
15
SE
cross-
on
glassglasscross-
on
glassglassoncross-
on
crosscross-
on
crossononcross-
on
cross-
on
cross-
off
cross-
off
offcrossoffcrossglasscross-
on
crossoncross-
on
cross-
on
cross-
on
glasscross-
on
crosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
6:03PM
1.48
6:07AM
1.43
6:50PM
1.43
7:02AM
1.35
7:53PM
1.39
8:18AM
1.29
9:12PM
1.40
9:52AM
1.29
10:32PM
1.47
11:14AM
1.37
11:37PM
1.58
12:16PM
1.49
12:32AM
1.71
1:08PM
1.60
1:21AM
1.82
1:54PM
1.71
2:07AM
1.89
2:39PM
1.78
2:52AM
1.93
3:24PM
1.81
3:37AM
1.91
4:08PM
1.80
4:22AM
1.84
12:01AM
0.71
12:22PM
0.62
12:57AM
0.76
1:19PM
0.69
2:18AM
0.79
2:38PM
0.74
3:53AM
0.75
4:06PM
0.72
5:10AM
0.64
5:19PM
0.65
6:09AM
0.51
6:17PM
0.54
6:59AM
0.38
7:08PM
0.44
7:45AM
0.27
7:55PM
0.36
8:29AM
0.20
8:40PM
0.31
9:12AM
0.17
9:26PM
0.30
9:55AM
0.19
10:12PM
0.34
10:39AM
0.26

Note: the tide data above is for Cape Town, South Africa which is 2 km away. Surf properties and timing are calculated for Thermopylae.New forecast is published every 6 hours at www.surf-forecast.com. See detailed tide info and graph
Offshore winds at Thermopylae blow from the E

Sun
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Fri
28
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
partially cloudy
clear
clear
clear
partially cloudy
partially cloudy
cloudy
cloudy
clear
partially cloudy
rain showers
rain showers
rain showers
partially cloudy
rain showers
rain showers
clear
clear
clear
clear
clear
clear
partially cloudy
partially cloudy
moderate rain
rain showers
rain showers
partially cloudy
partially cloudy
partially cloudy
clear
rain showers
clear
clear
clear
clear
some cloudsclearclearclearsome cloudssome cloudscloudycloudyclearsome cloudsrain shwrsrain shwrsrain shwrssome cloudsrain shwrsrain shwrsclearclearclearclearclearclearsome cloudssome cloudsmod. rainrain shwrsrain shwrssome cloudssome cloudssome cloudsclearrain shwrsclearclearclearclear
----------451-11--------842----3----
161615161516171617171617161616161514192022222017181616161615161414161412
161414151313161515171516161616151313181921211716161515161514151413161111
161615161516171617161515141515161414192022222016171616151615161312151211
--7:31--7:33--7:33--7:33--7:35--7:35--7:37--7:37--7:37--7:39--7:39--7:39
5:52--5:52--5:51--5:51--5:50--5:50--5:49--5:49--5:47--5:47--5:46--5:46--

Short Range Forecast: Mostly dry. Very mild (max 17°C on Tue afternoon, min 13°C on Mon night). Wind will be generally light.

Days 3-6 Weather Summary Moderate rain (total 12mm), heaviest on Wed night. Very mild (max 17°C on Wed afternoon, min 13°C on Fri night). Winds decreasing (strong winds from the NNW on Wed night, light winds from the E by Sat morning).

Days 6-9 Weather Summary Moderate rain (total 14mm), heaviest on Mon afternoon. Warm (max 22°C on Sun morning, min 15°C on Mon night). Wind will be generally light.

Long Range Forecast: Light rain (total 3mm), mostly falling on Wed night. Very mild (max 16°C on Tue afternoon, min 11°C on Thu night). Wind will be generally light.

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.


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.