Surf Forecasts:
How big are the waves at Thermopylae today (21 Oct):
- Morning surf: Morning surf (21 Oct, local time) - 11ft (3.5m), 12s period with WSW swell.
- Afternoon surf: Afternoon surf (21 Oct, local time) - 10ft (3.0m), 12s period with WSW swell.
- Evening surf: Evening surf (21 Oct, local time) - 8ft (2.5m), 12s period with WSW swell.
The current surf forecast for Thermopylae at 11AM is: 3.5m 12s primary swell from a West-southwest direction (forecast issued at 07:00am October 21). The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Oct) | 11ft (3.5m) | 12s |
| Afternoon (21 Oct) | 10ft (3.0m) | 12s |
| Evening (21 Oct) | 8ft (2.5m) | 12s |
Table - waves today at Thermopylae. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 3mm), mostly falling on Wed morning. Warm (max 20°C on Fri afternoon, min 13°C on Thu night). Wind will be generally light. | |||||||||||||||||||||||
Wednesday 21 | Thursday 22 | Friday 23 | |||||||||||||||||||||
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) | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 11 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 3128 | 4054 | 3527 | 2879 | 2343 | 1744 | 1234 | 1149 | 999 | 914 | 914 | 846 | 836 | 908 | 984 | 1065 | 786 | 1422 | 1375 | 1062 | 940 | 800 | 606 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | on | on | cross-on | cross | cross-off | cross-off | cross-off | off | cross-on | cross-on | cross-on | cross | cross |
High Tide | 12:14PM1.46m | 00:40AM1.40m | 12:50PM1.58m | 1:16AM1.53m | 1:24PM1.70m | ||||||||||||||||||
Low Tide | 5:54AM0.73m | 6:35PM0.63m | 6:37AM0.62m | 7:09PM0.50m | 7:13AM0.52m | 7:42PM0.38m | |||||||||||||||||
 |  | |  | |  |  | |  |  | | | |  | | | | | | | | | | |
 | 5:58 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — |
 | — | — | — | — | 7:04 | — | — | — | — | — | — | — | 7:05 | — | — | — | — | — | — | — | 7:06 | — | — |
mm | 1 | 1 | 1 | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 15 | 16 | 18 | 17 | 16 | 16 | 16 | 15 | 15 | 16 | 16 | 16 | 15 | 14 | 14 | 13 | 14 | 18 | 20 | 20 | 18 | 17 |
Feels °C | 9 | 11 | 13 | 15 | 14 | 14 | 15 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 11 | 13 | 16 | 17 | 17 | 15 | 15 |
Swell 1 Height (m) Direction Period (s) | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 11 |
| kJ | 3128 | 4054 | 3527 | 2879 | 2343 | 1744 | 1234 | 1149 | 999 | 914 | 914 | 846 | 836 | 908 | 984 | 1065 | 786 | 1422 | 1375 | 1062 | 940 | 800 | 606 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | W 15 | W 11 | W 11 | — | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | SSW 13 | W 10 | W 10 | W 10 | W 10 | W 9 | W 9 |
| kJ | — | — | — | — | 4 | 231 | 457 | — | 467 | 457 | 448 | 394 | 335 | 329 | 277 | 178 | 735 | 128 | 96 | 92 | 65 | 61 | 58 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 19 | W 10 | W 13 | NW 13 | W 16 | W 16 | W 16 | WSW 15 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 7 | 172 | 3 | 7 | 5 | 5 | 5 | 22 |
Wind waves Height (m) Direction Period (s) | NNW 6 | — | — | — | — | — | — | W 11 | — | W 11 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 107 | — | — | — | — | — | — | 459 | — | 282 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 283 | 24 | 17 | 17 | 17 | 17 | 17 | 26 | 17 | 17 | 17 | 17 | 24 | 1 | 0 | 0 | 0 | 0 | 17 | 17 | 24 | 1 | 1 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||||
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