Surf Forecasts:
How big are the waves at Thermopylae today (19 Sep):
- Afternoon surf: Afternoon surf (19 Sep, local time) - 4.5ft (1.3m), 12s period with SW swell.
- Evening surf: Evening surf (19 Sep, local time) - 6ft (1.9m), 14s period with SW swell.
The current surf forecast for Thermopylae at 11PM is: 2.1m 14s primary swell from a Southwest direction (forecast issued at 07:00pm September 19). An open ocean swell of 1.5m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Sep) | - | - |
| Afternoon (19 Sep) | 4.5ft (1.3m) | 12s |
| Evening (19 Sep) | 6ft (1.9m) | 14s |
Table - waves today at Thermopylae. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 2mm), mostly falling on Mon night. Warm (max 29°C on Tue morning, min 17°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Sat 19 | Sunday 20 | Monday 21 | |||||||||||||||||
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 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | SW 11 | SW 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 1063 | 1423 | 1632 | 1591 | 1452 | 1367 | 1288 | 1094 | 998 | 809 | 784 | 636 | 545 | 472 | 472 | 371 | 347 | 288 | 283 |
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-off | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-off | cross-off |
High Tide | 9:28PM1.15m | 11:21AM1.20m | 11:45PM1.20m | 12:29PM1.32m | |||||||||||||||
Low Tide | 3:12PM0.95m | 4:29AM0.87m | 5:44PM0.89m | 6:01AM0.79m | 6:43PM0.77m | ||||||||||||||
 |  | | | | | | | | | | | | | | | | | | |
 | — | — | — | — | 6:39 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | — | — |
 | 6:39 | — | — | — | — | — | — | — | 6:39 | — | — | — | — | — | — | — | 6:40 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 18 | 18 | 17 | 17 | 18 | 22 | 24 | 22 | 20 | 19 | 18 | 18 | 18 | 23 | 26 | 27 | 25 | 24 |
Feels °C | 15 | 15 | 15 | 15 | 15 | 17 | 20 | 22 | 20 | 18 | 18 | 17 | 17 | 17 | 22 | 25 | 26 | 25 | 24 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | SW 11 | SW 11 |
| kJ | 1063 | 1423 | 1632 | 1591 | 1452 | 1367 | 1288 | 1094 | 998 | 809 | 784 | 636 | 545 | 472 | 472 | 371 | 347 | 288 | 283 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SSE 6 | SW 15 | SSW 15 | SSW 14 | SSE 7 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 68 | 57 | 86 | 140 | 56 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 14 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 167 |
Wind waves Height (m) Direction Period (s) | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SE 6 | SSE 6 | SSE 6 | SSE 6 | SE 6 |
| kJ | 159 | 196 | 154 | 111 | 70 | 60 | 60 | 74 | 123 | 159 | 154 | 136 | 88 | 75 | 141 | 52 | 53 | 66 | 126 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 3 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 8 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||
Header Global | |||||||||||||||||||
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