Surf Forecasts:
How big are the waves at Thermopylae today (18 Oct):
- Morning surf: Morning surf (18 Oct, local time) - 8ft (2.5m), 13s period with WSW swell.
- Afternoon surf: Afternoon surf (18 Oct, local time) - 8ft (2.5m), 13s period with SW swell.
- Evening surf: Evening surf (18 Oct, local time) - 8ft (2.5m), 13s period with SW swell.
The current surf forecast for Thermopylae at 6PM is: 2.5m 13s primary swell from a Southwest direction (forecast issued at 01:00pm October 18). The wind direction is predicted to be cross-shore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Oct) | 8ft (2.5m) | 13s |
| Afternoon (18 Oct) | 8ft (2.5m) | 13s |
| Evening (18 Oct) | 8ft (2.5m) | 13s |
Table - waves today at Thermopylae. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 5mm), mostly falling on Wed morning. Very mild (max 15°C on Sun afternoon, min 12°C on Mon night). Winds increasing (calm on Mon morning, fresh winds from the NNW by Wed morning). | |||||||||||||||||||||
Sun 18 | Monday 19 | Tuesday 20 | |||||||||||||||||||
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 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 12 | SW 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2530 | 2319 | 2319 | 2283 | 1954 | 1789 | 1539 | 1422 | 1313 | 1130 | 1034 | 898 | 817 | 743 | 683 | 629 | 629 | 729 | 891 | 1172 | 1731 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross | cross | cross | cross | glassy | cross-on | cross-on | cross-on | cross-on | cross-off | glassy | glassy | cross | cross-on | cross-on | cross-on | cross | cross |
High Tide | 8:04AM1.24m | 8:27PM1.16m | 10:02AM1.25m | 10:43PM1.18m | 11:26AM1.34m | ||||||||||||||||
Low Tide | 2:30PM0.93m | 3:07AM0.86m | 4:48PM0.89m | 4:55AM0.82m | 5:54PM0.77m | ||||||||||||||||
 | |  |  | | | |  | | | | | | | | | | | |  | | |
 | — | — | — | — | — | — | 6:00 | — | — | — | — | — | — | — | 5:58 | — | — | — | — | — | — |
 | — | — | 7:00 | — | — | — | — | — | — | — | 7:01 | — | — | — | — | — | — | — | 7:02 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 15 | 14 | 14 | 14 | 13 | 13 | 14 | 15 | 15 | 15 | 14 | 14 | 13 | 12 | 13 | 15 | 14 | 15 | 15 | 14 |
Feels °C | 9 | 10 | 8 | 9 | 10 | 10 | 11 | 13 | 12 | 12 | 11 | 11 | 12 | 12 | 11 | 11 | 12 | 10 | 11 | 10 | 9 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | SW 12 | SW 12 |
| kJ | 2530 | 2319 | 2319 | 2283 | 1954 | 1789 | 1539 | 1422 | 1313 | 1130 | 1034 | 898 | 817 | 743 | 683 | 629 | 629 | 729 | 891 | 1172 | 1731 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 2 | NW 4 | NW 4 | NW 4 | NNW 4 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 10 | 41 | 23 | 31 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 63 | 27 | 27 | 10 | 1 | 1 | 1 | 0 | 26 | 26 | 26 | 1 | 0 | 0 | 0 | 6 | 17 | 17 | 17 | 31 | 327 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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