Surf Forecasts:
How big are the waves at Thermopylae today (20 Oct):
- Morning surf: Morning surf (20 Oct, local time) - 5ft (1.6m), 11s period with SW swell.
- Afternoon surf: Afternoon surf (20 Oct, local time) - 6ft (1.8m), 11s period with SW swell.
- Evening surf: Evening surf (20 Oct, local time) - 7ft (2.2m), 12s period with SW swell.
The current surf forecast for Thermopylae at 7AM is: 1.7m 11s primary swell from a Southwest direction (forecast issued at 01:00am October 20). The wind direction is predicted to be cross-shore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Oct) | 5ft (1.6m) | 11s |
| Afternoon (20 Oct) | 6ft (1.8m) | 11s |
| Evening (20 Oct) | 7ft (2.2m) | 12s |
Table - waves today at Thermopylae. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 8mm), mostly falling on Tue night. Very mild (max 17°C on Wed afternoon, min 13°C on Tue morning). Winds decreasing (fresh winds from the NNW on Tue night, light winds from the SSW by Thu night). | ||||||||||||||||||||||||
Tuesday 20 | Wednesday 21 | Thursday 22 | ||||||||||||||||||||||
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 | 5 PM | 8 PM | 11 PM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 12 | WSW 12 | SW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 743 | 683 | 629 | 629 | 729 | 969 | 1313 | 2013 | 2402 | 3586 | 3861 | 3213 | 2757 | 2164 | 1547 | 1324 | 1130 | 999 | 930 | 914 | 914 | 851 | 836 | 836 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | cross | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | on | on | on | cross-on | cross-on | cross-off |
High Tide | 11:26AM1.34m | 11:56PM1.28m | 12:14PM1.46m | 00:40AM1.40m | 12:50PM1.58m | |||||||||||||||||||
Low Tide | 4:55AM0.82m | 5:54PM0.77m | 5:54AM0.73m | 6:35PM0.63m | 6:37AM0.62m | 7:09PM0.50m | ||||||||||||||||||
 | |  |  |  | |  | |  | |  |  | | | | | |  | | | | | | | |
 | — | 5:58 | — | — | — | — | — | — | — | 5:58 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — |
 | — | — | — | — | — | 7:02 | — | — | — | — | — | — | — | 7:04 | — | — | — | — | — | — | — | 7:05 | — | — |
mm | — | — | — | — | — | — | — | — | 2 | 2 | 2 | 1 | — | — | — | — | — | — | 1 | — | — | — | — | — |
Temp °C | 13 | 12 | 13 | 15 | 15 | 15 | 15 | 14 | 13 | 14 | 15 | 16 | 17 | 17 | 16 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 15 | 14 |
Feels °C | 12 | 11 | 11 | 11 | 10 | 11 | 10 | 8 | 7 | 9 | 12 | 14 | 14 | 15 | 14 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 13 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 12 | WSW 12 | SW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 |
| kJ | 743 | 683 | 629 | 629 | 729 | 969 | 1313 | 2013 | 2402 | 3586 | 3861 | 3213 | 2757 | 2164 | 1547 | 1324 | 1130 | 999 | 930 | 914 | 914 | 851 | 836 | 836 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | WNW 11 | WNW 11 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 476 | 407 | 403 | 459 | 476 | 457 | 448 | 394 | 394 | 329 | 274 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | NW 4 | NW 4 | NW 4 | NW 5 | NNW 5 | NNW 6 | — | — | — | — | — | W 11 | — | — | — | — | W 11 | — | — | — |
| kJ | — | — | — | — | 10 | 35 | 21 | 119 | 61 | 87 | — | — | — | — | — | 606 | — | — | — | — | 235 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 11 | 17 | 17 | 17 | 139 | 192 | 191 | 284 | 17 | 17 | 17 | 26 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 1 | 0 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
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