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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 1 pm Friday 24 Apr 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 1.5°C colder than average for this time of year)How big are the waves at Thermopylae today?
The current surf forecast for Thermopylae at 10PM is: 0.9m 11s primary swell from a South-southwest direction and 0.5m 12s secondary swell from a Southwest direction (forecast issued at 01:00pm April 24). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (24 Apr) | 4.5ft (1.3m) | 12s |
| Afternoon (24 Apr) | 3.5ft (1.0m) | 11s |
| Evening (24 Apr) | 3ft (0.9m) | 11s |
Table - waves today at Thermopylae. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 16mm), heaviest on Sun afternoon. Warm (max 24°C on Fri afternoon, min 14°C on Sun afternoon). Wind will be generally light. | ||||||||||||||||||||||||
Fri 24 | Saturday 25 | Sunday 26 | Mon 27 | |||||||||||||||||||||
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 | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 10 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | W 9 | WSW 8 | WSW 8 | WSW 8 | WSW 9 | SW 11 | SW 11 | WSW 11 | |
411 | 320 | 259 | 214 | 158 | 137 | 174 | 202 | 172 | 163 | 160 | 182 | 157 | 154 | 120 | 205 | 450 | 492 | 484 | 707 | 1080 | 3003 | 3404 | 2357 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | cross-on | cross-off | cross-off | glassy | cross | cross | cross-off | cross | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | on | on | on | on | cross-on | cross-on | cross-on | |
High Tide | 9:24AM1.30m | 10:20PM1.42m | 11:10AM1.32m | 11:41PM1.49m | 12:20PM1.40m | 00:36AM1.59m | ||||||||||||||||||
Low Tide | 3:55PM0.76m | 5:07AM0.72m | 5:23PM0.72m | 6:16AM0.62m | 6:24PM0.65m | 7:05AM0.53m | ||||||||||||||||||
 | | |  | | | | | | | | | | |  |  |  |  | |  | |  | | | |
 | — | — | — | — | — | — | 7:16 | — | — | — | — | — | — | — | 7:16 | — | — | — | — | — | — | — | 7:16 | — |
 | — | — | 6:13 | — | — | — | — | — | — | — | 6:12 | — | — | — | — | — | — | — | 6:10 | — | — | — | — | 6:09 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 6 | 3 | 2 | 2 | 1 | — | — | |
Temp °C | 22 | 24 | 23 | 22 | 22 | 21 | 18 | 17 | 19 | 19 | 18 | 17 | 16 | 15 | 15 | 16 | 17 | 14 | 15 | 15 | 14 | 14 | 15 | 15 |
19 | 20 | 20 | 19 | 19 | 18 | 15 | 15 | 16 | 16 | 17 | 16 | 15 | 13 | 12 | 12 | 13 | 10 | 12 | 10 | 9 | 8 | 9 | 11 | |
Swell 1 Height (m) Direction Period (s) | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 10 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | SW 15 | SW 15 | SW 15 | SW 14 | SW 13 | NW 12 | SW 11 | WSW 11 |
 kJ | 411 | 320 | 259 | 214 | 158 | 137 | 174 | 202 | 172 | 163 | 160 | 182 | 157 | 154 | 120 | 205 | 76 | 76 | 54 | 95 | 261 | 6 | 3404 | 2357 |
Swell 2 Height (m) Direction Period (s) | NW 15 | NW 15 | NW 15 | S 10 | SW 12 | S 10 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | S 8 | WSW 4 | WSW 4 | W 5 | SW 16 | S 16 | S 15 | S 15 | S 14 | S 14 | — | — | SSW 11 |
| kJ | 8 | 8 | 8 | 8 | 72 | 77 | 28 | 26 | 15 | 15 | 8 | 5 | 3 | 6 | 17 | 38 | 19 | 18 | 17 | 16 | 15 | — | — | 1143 |
Swell 3 Height (m) Direction Period (s) | — | W 9 | W 9 | W 15 | S 10 | S 10 | W 14 | NW 13 | NW 13 | NW 13 | NW 13 | SW 18 | SW 17 | SW 16 | SW 16 | S 16 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | — | — | NW 12 |
| kJ | — | 2 | 2 | 4 | 18 | 8 | 4 | 7 | 7 | 7 | 7 | 12 | 11 | 41 | 41 | 20 | 6 | 6 | 6 | 6 | 6 | — | — | 6 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | N 3 | N 4 | NNW 4 | NNW 4 | NW 4 | NNW 3 | NNW 3 | NNW 4 | NNW 4 | W 9 | WSW 8 | WSW 8 | WSW 8 | WSW 9 | SW 11 | — | WSW 11 |
| kJ | — | — | — | — | — | — | — | 2 | 12 | 16 | 10 | 6 | 4 | 6 | 13 | 38 | 450 | 492 | 484 | 707 | 1080 | 3003 | — | 1554 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 21 | 0 | 0 | 0 | 11 | 6 | 0 | 31 | 17 | 17 | 11 | 11 | 11 | 31 | 74 | 17 | 26 | 26 | 26 | 26 | 1023 | 139 | 26 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Ocean Swells (m)- Wind Speed (km/h)
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