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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 am Sunday 31 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
16.2° C
(Which is normal for this time of year)How big are the waves at Thermopylae today (31 May):
- Morning surf: Morning surf (31 May, local time) - 6ft (1.8m), 12s period with SW swell.
- Afternoon surf: Afternoon surf (31 May, local time) - 5ft (1.6m), 12s period with SW swell.
- Evening surf: Evening surf (31 May, local time) - 5ft (1.5m), 12s period with SW swell.
The current surf forecast for Thermopylae at 11AM is: 1.7m 11s primary swell from a Southwest direction (forecast issued at 07:00am May 31). The wind direction is predicted to be glassy and the swell rating is 3.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 May) | 6ft (1.8m) | 12s |
| Afternoon (31 May) | 5ft (1.6m) | 12s |
| Evening (31 May) | 5ft (1.5m) | 12s |
Table - waves today at Thermopylae. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastSome drizzle, heaviest during Mon night. Warm (max 20°C on Sun afternoon, min 14°C on Tue night). Winds increasing (calm on Sun night, fresh winds from the SSE by Tue night). | ||||||||||||||||||||||||
Sunday 31 | Monday 1 | Tuesday 2 | Wed 3 | |||||||||||||||||||||
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 | 5 PM | 8 PM | 11 PM | 2 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SW 12 | SW 12 | SW 11 | SW 11 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | WSW 11 | WSW 11 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | SW 11 | SW 11 | WSW 11 | SW 10 | S 8 | S 9 | SSW 10 | SW 13 | |
944 | 855 | 739 | 739 | 722 | 604 | 583 | 544 | 593 | 593 | 657 | 829 | 993 | 1182 | 1144 | 1102 | 1492 | 1528 | 970 | 1325 | 630 | 766 | 525 | 1110 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | glassy | glassy | glassy | cross | glassy | cross-off | glassy | glassy | glassy | glassy | cross-on | on | on | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | |
High Tide | 3:02AM1.63m | 3:33PM1.58m | 3:33AM1.61m | 4:06PM1.58m | 4:05AM1.58m | 4:39PM1.57m | ||||||||||||||||||
Low Tide | 9:16AM0.43m | 9:27PM0.57m | 9:46AM0.43m | 10:00PM0.59m | 10:17AM0.44m | 10:35PM0.61m | ||||||||||||||||||
 |  | | | | | | | |  |  | | |  | |  |  | | | | | | | | |
 | 7:41 | — | — | — | — | — | — | — | 7:41 | — | — | — | — | — | — | — | 7:43 | — | — | — | — | — | — | 7:43 |
 | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:45 | — | — | 5:45 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | |
Temp °C | 16 | 16 | 18 | 20 | 18 | 19 | 18 | 18 | 17 | 17 | 18 | 19 | 18 | 17 | 17 | 16 | 15 | 15 | 15 | 16 | 15 | 15 | 15 | 14 |
16 | 15 | 17 | 19 | 17 | 18 | 17 | 18 | 17 | 17 | 18 | 18 | 17 | 17 | 17 | 16 | 12 | 12 | 12 | 11 | 8 | 8 | 8 | 8 | |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 12 | SW 11 | SW 11 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | WSW 11 | WSW 11 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | SW 11 | SW 11 | WSW 11 | SW 10 | W 10 | WSW 10 | SSW 10 | SW 13 |
 kJ | 944 | 855 | 739 | 739 | 722 | 604 | 583 | 544 | 593 | 593 | 657 | 829 | 993 | 1182 | 1144 | 1102 | 1492 | 1528 | 970 | 1325 | 477 | 377 | 482 | 1110 |
Swell 2 Height (m) Direction Period (s) | — | SSE 4 | — | — | — | W 12 | S 9 | NW 12 | NW 12 | W 12 | SSW 14 | S 13 | SSW 13 | S 13 | S 12 | S 12 | NW 11 | NW 11 | SSW 11 | SW 15 | SW 15 | SW 14 | SW 13 | W 11 |
| kJ | — | 4 | — | — | — | 3 | 2 | 6 | 6 | 3 | 20 | 14 | 17 | 14 | 11 | 12 | 5 | 5 | 328 | 8 | 57 | 284 | 525 | 235 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | NW 12 | NW 12 | NW 12 | — | W 12 | W 12 | W 12 | W 11 | NW 11 | NW 11 | — | — | NW 11 | — | SW 15 | SW 14 | W 11 | — |
| kJ | — | — | — | — | — | — | 6 | 6 | 6 | — | 3 | 3 | 3 | 2 | 5 | 5 | — | — | 5 | — | 57 | 437 | 291 | — |
Wind waves Height (m) Direction Period (s) | SE 4 | SE 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 8 | — | SSE 7 | S 8 | S 9 | SE 5 | SSE 7 |
| kJ | 15 | 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 258 | — | 158 | 630 | 766 | 102 | 379 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 17 | 17 | 17 | 11 | 1 | 8 | 21 | 344 | 344 | 52 | 52 | 13 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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