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) - 8ft (2.4m), 12s period with SW swell.
The current surf forecast for Thermopylae at 6PM is: 2.1m 11s primary swell from a Southwest direction and 0.9m 4s secondary swell from a West-northwest direction (forecast issued at 01:00pm 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) | 8ft (2.4m) | 12s |
Table - waves today at Thermopylae. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 9mm), mostly falling on Tue night. Very mild (max 18°C on Wed afternoon, min 14°C on Tue night). Winds decreasing (fresh winds from the NNW on Tue night, light winds from the SE by Fri morning). | |||||||||||||||||||||
Tue 20 | Wednesday 21 | Thursday 22 | |||||||||||||||||||
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 12 | SW 12 | SW 12 | 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 |
Wave Graph  | |||||||||||||||||||||
 kJ | 629 | 729 | 1045 | 1521 | 1821 | 2310 | 3502 | 3965 | 3527 | 2831 | 2410 | 1813 | 1403 | 1213 | 999 | 914 | 914 | 784 | 851 | 836 | 908 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | on | cross-on | cross-on | 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 | 5:54PM0.77m | 5:54AM0.73m | 6:35PM0.63m | 6:37AM0.62m | 7:09PM0.50m | ||||||||||||||||
 |  | |  |  |  | |  | |  | | | | | | |  | | |  | | |
 | — | — | — | — | — | — | 5:58 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — |
 | — | — | 7:02 | — | — | — | — | — | — | — | 7:04 | — | — | — | — | — | — | — | 7:05 | — | — |
mm | — | — | — | — | — | 2 | 2 | 1 | 1 | 1 | — | 1 | — | 1 | — | — | — | — | — | — | — |
Temp °C | 14 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 16 | 18 | 17 | 16 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 15 | 15 |
Feels °C | 10 | 10 | 11 | 11 | 8 | 8 | 9 | 9 | 13 | 15 | 14 | 14 | 14 | 13 | 14 | 13 | 14 | 14 | 13 | 13 | 14 |
Swell 1 Height (m) Direction Period (s) | SW 11 | SW 11 | SW 11 | SW 12 | SW 12 | SW 12 | 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 |
| kJ | 629 | 729 | 1045 | 1521 | 1821 | 2310 | 3502 | 3965 | 3527 | 2831 | 2410 | 1813 | 1403 | 1213 | 999 | 914 | 914 | 784 | 851 | 836 | 908 |
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 |
| kJ | — | — | — | — | — | — | — | — | — | — | 4 | 231 | 396 | 396 | 467 | 457 | 457 | 394 | 335 | 329 | 277 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | WNW 4 | — | NNW 4 | NNW 5 | NNW 6 | — | — | — | — | — | — | — | — | W 11 | W 11 | W 11 | — | — | — |
| kJ | — | — | 32 | — | 24 | 80 | 124 | — | — | — | — | — | — | — | — | 282 | 233 | 233 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 17 | 17 | 17 | 31 | 277 | 192 | 283 | 24 | 17 | 17 | 17 | 17 | 17 | 24 | 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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