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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 Thursday 07 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
16.1° C
(Which is 1.3°C colder than average for this time of year)How big are the waves at Thermopylae today?
The current surf forecast for Thermopylae at 11PM is: 0.8m 18s primary swell from a West-southwest direction and 1.2m 8s secondary swell from a South direction, 1.1m 13s secondary swell from a West-southwest direction (forecast issued at 07:00pm May 07). The wind direction is predicted to be cross-offshore and the swell rating is 4.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (07 May) | - | - |
| Afternoon (07 May) | 3.5ft (1.0m) | 14s |
| Evening (07 May) | 3.5ft (1.1m) | 13s |
Table - waves today at Thermopylae. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 31mm), heaviest during Sat night. Very mild (max 18°C on Fri afternoon, min 12°C on Sun morning). Winds increasing (calm on Fri night, strong winds from the W by Sun morning). | ||||||||||||||||||||||||
Thu 7 | Friday 8 | Saturday 9 | Sun 10 | |||||||||||||||||||||
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 13 | WSW 18 | WSW 18 | WSW 17 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WNW 13 | WSW 9 | W 9 | WSW 9 | WSW 10 | |
434 | 414 | 413 | 596 | 1056 | 1261 | 1948 | 1875 | 1689 | 1475 | 1435 | 1301 | 1143 | 985 | 476 | 883 | 700 | 680 | 590 | 2470 | 1689 | 1893 | 2476 | 3354 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-off | cross-off | glassy | cross | cross | cross | cross-on | cross-on | cross | cross | on | on | on | on | on | |
High Tide | 6:44PM1.40m | 6:50AM1.31m | 7:44PM1.36m | 8:02AM1.25m | 9:00PM1.35m | 9:37AM1.24m | ||||||||||||||||||
Low Tide | 00:49AM0.80m | 1:06PM0.73m | 2:07AM0.84m | 2:21PM0.78m | 3:42AM0.81m | |||||||||||||||||||
 |  |  |  | | | | | | | | | | | | |  | | |  | |  |  | | |
 | — | — | — | — | 7:24 | — | — | — | — | — | — | — | 7:26 | — | — | — | — | — | — | — | 7:26 | — | — | — |
 | 6:00 | — | — | — | — | — | — | — | 5:59 | — | — | — | — | — | — | — | 5:58 | — | — | — | — | — | — | 5:57 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 12 | 11 | 2 | 4 | 1 | |
Temp °C | 17 | 16 | 16 | 15 | 15 | 14 | 16 | 18 | 17 | 16 | 15 | 15 | 14 | 14 | 16 | 17 | 16 | 15 | 15 | 13 | 14 | 14 | 12 | 14 |
13 | 13 | 14 | 12 | 13 | 12 | 14 | 15 | 14 | 14 | 14 | 14 | 13 | 12 | 13 | 13 | 11 | 10 | 8 | 5 | 7 | 6 | 2 | 4 | |
Swell 1 Height (m) Direction Period (s) | WSW 13 | WSW 13 | S 8 | WSW 13 | WSW 17 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | SE 12 | SW 13 | SW 13 | SE 11 | SE 11 |
 kJ | 434 | 414 | 191 | 476 | 1056 | 1261 | 1948 | 1875 | 1689 | 1475 | 1435 | 1301 | 1143 | 985 | 476 | 883 | 700 | 680 | 590 | 69 | 509 | 594 | 32 | 31 |
Swell 2 Height (m) Direction Period (s) | WSW 20 | WSW 19 | WSW 13 | S 8 | SSE 10 | SSE 10 | SSE 9 | S 9 | SE 12 | SE 12 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | SW 14 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | W 11 | SSE 12 | SE 12 | — | — |
| kJ | 149 | 248 | 408 | 153 | 385 | 282 | 225 | 125 | 37 | 678 | 474 | 376 | 293 | 269 | 404 | 192 | 145 | 101 | 98 | 2 | 55 | 34 | — | — |
Swell 3 Height (m) Direction Period (s) | SE 14 | SE 14 | WSW 18 | WSW 18 | WSW 13 | WSW 13 | SSE 18 | SE 12 | SSE 16 | SSE 16 | SE 15 | SSE 15 | SE 14 | SSE 13 | SSE 13 | SW 14 | W 11 | — | — | — | — | — | — | — |
| kJ | 49 | 48 | 413 | 596 | 378 | 378 | 62 | 74 | 51 | 169 | 229 | 142 | 211 | 70 | 201 | 459 | 2 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | S 8 | S 8 | — | — | — | — | — | SSE 8 | SSE 9 | SSE 16 | — | — | — | — | — | NW 3 | NNW 3 | NW 4 | NNW 6 | WNW 13 | WSW 9 | W 9 | WSW 9 | WSW 10 |
| kJ | 264 | 264 | — | — | — | — | — | 130 | 132 | 534 | — | — | — | — | — | 2 | 7 | 42 | 200 | 2470 | 1689 | 1893 | 2476 | 3354 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 21 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 8 | 0 | 0 | 0 | 8 | 6 | 11 | 17 | 24 | 74 | 74 | 74 | 344 | 804 | 888 | 949 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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