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 6AM is: 3.0m 13s primary swell from a Southwest direction and 0.9m 12s secondary swell from a South-southwest direction (forecast issued at 01:00am October 18). An open ocean swell of 1.0m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| 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 3mm), mostly falling on Tue night. Very mild (max 16°C on Mon afternoon, min 12°C on Mon night). Winds increasing (calm on Mon morning, fresh winds from the N by Tue night). | ||||||||||||||||||||||||
Sunday 18 | Monday 19 | Tuesday 20 | ||||||||||||||||||||||
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 13 | SW 13 | WSW 13 | 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 11 | WSW 12 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 2555 | 2702 | 1990 | 2536 | 2445 | 2319 | 2166 | 1954 | 1789 | 1539 | 1422 | 1313 | 1130 | 1034 | 898 | 817 | 743 | 683 | 629 | 688 | 738 | 850 | 1326 | 2129 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross-on | cross | glassy | on | on | cross-on | cross-on | glassy | glassy | glassy | cross | cross-on | cross-on | cross-on | cross-on | cross |
High Tide | 8:04AM1.24m | 8:27PM1.16m | 10:02AM1.25m | 10:43PM1.18m | 11:26AM1.34m | |||||||||||||||||||
Low Tide | 1:15AM0.80m | 2:30PM0.93m | 3:07AM0.86m | 4:48PM0.89m | 4:55AM0.82m | 5:54PM0.77m | ||||||||||||||||||
 | |  | | | |  | | | |  | |  | | | | | | | | | | |  | |
 | — | 6:01 | — | — | — | — | — | — | — | 6:00 | — | — | — | — | — | — | — | 5:58 | — | — | — | — | — | — |
 | — | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:01 | — | — | — | — | — | — | — | 7:02 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 15 | 16 | 15 | 15 | 14 | 13 | 12 | 13 | 14 | 14 | 15 | 14 | 14 |
Feels °C | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 10 | 10 | 11 | 12 | 12 | 13 | 12 | 13 | 13 | 12 | 11 | 11 | 11 | 9 | 10 | 9 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | WSW 13 | 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 11 | WSW 12 |
| kJ | 2555 | 2702 | 1990 | 2536 | 2445 | 2319 | 2166 | 1954 | 1789 | 1539 | 1422 | 1313 | 1130 | 1034 | 898 | 817 | 743 | 683 | 629 | 688 | 738 | 850 | 1326 | 2129 |
Swell 2 Height (m) Direction Period (s) | — | SSW 12 | SSW 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 162 | 387 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SSE 4 | S 12 | SSE 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 3 | NW 4 | NW 4 | NW 4 | NW 6 |
| kJ | — | 35 | 638 | 26 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 13 | 24 | 29 | 123 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 1 | 1 | 47 | 53 | 27 | 27 | 27 | 8 | 1 | 1 | 0 | 17 | 17 | 17 | 25 | 0 | 0 | 0 | 6 | 17 | 24 | 139 | 31 | 277 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
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