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Thermopylae Surf Forecast
/ Cape Town (70 surf breaks) /
Surf Forecasts:
Thermopylae surfForecast / Cape Town / South Africa
48hr Weather and Surf, issued 7 pm Monday 04 May 2026 SASTForecast 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
16.0° C
(Which is 1.4°C colder than average for this time of year)How big are the waves at Thermopylae today?
The current surf forecast for Thermopylae at 12AM is: 2.2m 12s primary swell from a West-southwest direction and 0.7m 11s secondary swell from a South-southwest direction (forecast issued at 07:00pm May 04). The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (05 May) | 7.5ft (2.3m) | 12s |
| Afternoon (05 May) | 8ft (2.4m) | 11s |
| Evening (05 May) | 10ft (3.0m) | 11s |
Table - waves today at Thermopylae. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 3mm), mostly falling on Mon night. Very mild (max 18°C on Thu afternoon, min 13°C on Tue morning). Winds increasing (light winds from the SW on Tue afternoon, fresh winds from the SSE by Wed morning). | ||||||||||||||||||||||||
Mon 4 | Tuesday 5 | Wednesday 6 | Thu 7 | |||||||||||||||||||||
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 | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | SSW 11 | SSW 11 | SSW 12 | S 11 | S 11 | S 11 | S 11 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 9 | S 9 | SSE 9 | WSW 15 | WSW 14 | |
1574 | 1361 | 1302 | 1420 | 1455 | 1455 | 1332 | 1175 | 1943 | 2274 | 2021 | 1613 | 1232 | 1633 | 1456 | 1275 | 1082 | 833 | 602 | 495 | 363 | 304 | 443 | 347 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | cross-on | cross-on | cross | cross-off | cross-off | cross-on | cross | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | |
High Tide | 4:50PM1.58m | 4:51AM1.57m | 5:22PM1.52m | 5:23AM1.49m | 5:59PM1.46m | 6:01AM1.40m | ||||||||||||||||||
Low Tide | 10:43PM0.60m | 11:02AM0.50m | 11:17PM0.66m | 11:35AM0.57m | 11:56PM0.74m | 12:14PM0.65m | ||||||||||||||||||
 |  |  |  | |  | | |  | | | | | | | | | | | | | | | | |
 | — | — | — | — | 7:22 | — | — | — | — | — | — | — | 7:24 | — | — | — | — | — | — | — | 7:24 | — | — | — |
 | 6:02 | — | — | — | — | — | — | — | 6:01 | — | — | — | — | — | — | — | 6:00 | — | — | — | — | — | — | 6:00 |
— | — | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 17 | 16 | 15 | 14 | 14 | 13 | 15 | 16 | 16 | 16 | 15 | 15 | 15 | 16 | 17 | 17 | 16 | 16 | 15 | 15 | 15 | 15 | 16 | 18 |
14 | 14 | 13 | 12 | 12 | 11 | 13 | 14 | 13 | 13 | 12 | 12 | 13 | 14 | 11 | 11 | 10 | 11 | 10 | 11 | 11 | 12 | 12 | 14 | |
Swell 1 Height (m) Direction Period (s) | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | SSW 11 | SSW 11 | SSW 12 | S 11 | S 11 | S 11 | S 11 | WSW 11 | WSW 14 | WSW 14 | SW 13 | WSW 13 | WSW 13 | WSW 13 | WSW 12 | WSW 15 | WSW 14 |
 kJ | 1574 | 1361 | 1302 | 1420 | 1455 | 1455 | 1332 | 1175 | 1943 | 2274 | 2021 | 1613 | 1232 | 1109 | 239 | 362 | 318 | 257 | 299 | 295 | 209 | 125 | 443 | 347 |
Swell 2 Height (m) Direction Period (s) | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | WSW 11 | WSW 11 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | SW 15 | WSW 11 | WSW 10 | WSW 10 | WSW 18 | SW 16 | SW 16 | WSW 15 | SSE 9 | SW 9 |
| kJ | 192 | 186 | 133 | 128 | 126 | 123 | 123 | 933 | 843 | 705 | 559 | 497 | 422 | 349 | 309 | 133 | 86 | 83 | 31 | 68 | 127 | 193 | 75 | 22 |
Swell 3 Height (m) Direction Period (s) | SE 13 | S 12 | S 12 | SW 20 | SW 20 | WSW 19 | SW 18 | SW 18 | SW 18 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | — | NW 13 | SW 20 | WSW 18 | NW 13 | W 13 | SW 22 | SE 15 | WSW 21 | WSW 20 |
| kJ | 6 | 3 | 3 | 16 | 15 | 37 | 51 | 80 | 80 | 129 | 264 | 206 | 229 | 309 | — | 7 | 15 | 32 | 7 | 3 | 19 | 9 | 44 | 78 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | S 11 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 9 | S 9 | SSE 9 | S 7 | SSE 8 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 1633 | 1456 | 1275 | 1082 | 833 | 602 | 495 | 363 | 304 | 156 | 235 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 17 | 17 | 17 | 11 | 6 | 0 | 0 | 6 | 1 | 1 | 6 | 0 | 1 | 6 | 1023 | 138 | 888 | 53 | 13 | 1 | 1 | 1 | 1 | 21 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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