Surf Forecasts:
How big are the waves at Thermopylae today (14 Sep):
- Morning surf: Morning surf (14 Sep, local time) - 4.5ft (1.3m), 12s period with SW swell.
- Afternoon surf: Afternoon surf (14 Sep, local time) - 3.5ft (1.1m), 12s period with SW swell.
- Evening surf: Evening surf (14 Sep, local time) - 6ft (1.8m), 7s period with NW swell.
The current surf forecast for Thermopylae at 4AM is: 1.5m 13s primary swell from a Southwest direction and 0.4m 7s secondary swell from a South-southeast direction, 0.9m 4s secondary swell from a North-northwest direction (forecast issued at 01:00am September 14). The wind direction is predicted to be cross-shore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Sep) | 4.5ft (1.3m) | 12s |
| Afternoon (14 Sep) | 3.5ft (1.1m) | 12s |
| Evening (14 Sep) | 6ft (1.8m) | 7s |
Table - waves today at Thermopylae. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 20mm), heaviest during Tue night. Very mild (max 16°C on Mon morning, min 12°C on Tue night). Mainly strong winds. | ||||||||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | ||||||||||||||||||||||
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 | SW 13 | SW 12 | SW 12 | SW 12 | NW 7 | SW 12 | NW 7 | SW 11 | NW 7 | SW 18 | SW 17 | SW 16 | SW 15 | WSW 15 | WSW 14 | WSW 14 | SW 13 | SW 13 | SW 13 | SW 13 | WSW 13 | SW 13 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 663 | 649 | 563 | 423 | 361 | 268 | 308 | 295 | 311 | 233 | 215 | 192 | 459 | 1001 | 1417 | 2842 | 3582 | 3572 | 2561 | 2494 | 2436 | 1155 | 888 | 1247 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-on | cross-on | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross | on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 4:54AM1.67m | 5:08PM1.74m | 5:25AM1.58m | 5:38PM1.62m | 5:57AM1.48m | 6:09PM1.50m | ||||||||||||||||||
Low Tide | 10:52AM0.38m | 11:17PM0.41m | 11:21AM0.48m | 11:46PM0.52m | 11:50AM0.60m | |||||||||||||||||||
 | |  |  | |  |  | | | |  | | | | |  | | |  | | | |  | | |
 | — | 6:48 | — | — | — | — | — | — | — | 6:46 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:36 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — |
mm | 1 | 1 | 1 | — | — | — | — | — | — | — | 1 | — | — | — | 1 | 8 | 6 | 3 | — | — | — | — | — | — |
Temp °C | 15 | 15 | 15 | 16 | 16 | 16 | 15 | 14 | 15 | 14 | 15 | 16 | 16 | 15 | 14 | 13 | 13 | 12 | 13 | 14 | 15 | 14 | 13 | 13 |
Feels °C | 13 | 12 | 11 | 12 | 10 | 12 | 11 | 10 | 11 | 11 | 12 | 10 | 9 | 9 | 9 | 12 | 11 | 8 | 7 | 6 | 7 | 6 | 5 | 5 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 17 | SW 16 | SW 15 | WSW 15 | WSW 14 | WSW 14 | SW 13 | SW 13 | SW 13 | SW 13 | WSW 13 | SW 13 |
| kJ | 663 | 649 | 563 | 423 | 361 | 268 | 268 | 263 | 250 | 233 | 165 | 168 | 459 | 1001 | 1417 | 2842 | 3582 | 3572 | 2561 | 2494 | 2436 | 1155 | 888 | 1247 |
Swell 2 Height (m) Direction Period (s) | SSE 7 | SE 9 | SE 11 | SE 11 | SSE 8 | SE 8 | SE 13 | SE 12 | ESE 11 | SW 16 | SW 16 | SW 18 | SW 11 | SE 13 | SE 13 | NW 8 | NW 7 | SW 15 | SW 14 | SW 14 | SW 14 | WSW 13 | SW 13 | W 13 |
| kJ | 15 | 76 | 112 | 90 | 6 | 2 | 6 | 36 | 11 | 42 | 69 | 192 | 183 | 7 | 7 | 297 | 143 | 305 | 821 | 837 | 526 | 1011 | 755 | 564 |
Swell 3 Height (m) Direction Period (s) | SE 8 | SE 12 | — | — | ESE 13 | SE 13 | — | — | SE 13 | ESE 13 | SE 13 | ESE 13 | SE 13 | — | — | — | — | — | — | — | — | — | — | WSW 12 |
| kJ | 17 | 34 | — | — | 16 | 6 | — | — | 7 | 17 | 7 | 16 | 7 | — | — | — | — | — | — | — | — | — | — | 220 |
Wind waves Height (m) Direction Period (s) | NNW 4 | NNW 5 | NNW 5 | NNW 5 | NW 6 | NW 6 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 6 | NW 6 | NW 7 | WNW 7 | — | — | S 5 | — | SW 9 | — | SSE 5 | SSE 6 | SSE 7 |
| kJ | 13 | 44 | 61 | 72 | 123 | 239 | 308 | 295 | 311 | 217 | 215 | 177 | 373 | 513 | 611 | — | — | 55 | — | 679 | — | 117 | 255 | 350 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 11 | 11 | 11 | 31 | 31 | 74 | 74 | 182 | 24 | 31 | 83 | 31 | 24 | 191 | 191 | 234 | 191 | 31 | 0 | 63 | 234 | 52 | 87 | 177 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
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