Surf Forecasts:
How big are the waves at Thermopylae today (15 Sep):
- Morning surf: Morning surf (15 Sep, local time) - 6ft (1.8m), 7s period with NW swell.
- Afternoon surf: Afternoon surf (15 Sep, local time) - 3.5ft (1.1m), 16s period with SW swell.
- Evening surf: Evening surf (15 Sep, local time) - 6.5ft (2.0m), 15s period with SW swell.
The current surf forecast for Thermopylae at 8AM is: 1.7m 7s primary swell from a Northwest direction and 0.8m 11s secondary swell from a Southwest direction, 0.4m 16s secondary swell from a Southwest direction (forecast issued at 01:00am September 15). The wind direction is predicted to be cross-shore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Sep) | 6ft (1.8m) | 7s |
| Afternoon (15 Sep) | 3.5ft (1.1m) | 16s |
| Evening (15 Sep) | 6.5ft (2.0m) | 15s |
Table - waves today at Thermopylae. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 15mm), heaviest on Tue night. Very mild (max 16°C on Tue morning, min 12°C on Wed night). Mainly strong winds. | ||||||||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | ||||||||||||||||||||||
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) | NW 8 | NW 8 | NW 7 | NW 6 | NW 7 | SW 16 | SW 15 | SW 15 | WSW 14 | WSW 14 | SW 13 | SW 13 | WSW 13 | SW 13 | SW 13 | SSW 13 | SSW 13 | SSW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 269 | 244 | 301 | 331 | 572 | 1001 | 1741 | 2662 | 4456 | 3659 | 2715 | 2528 | 1901 | 1086 | 991 | 2005 | 2431 | 2210 | 1381 | 1347 | 1092 | 990 | 836 | 822 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross | cross-on | cross-on | cross | cross-on | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 5:25AM1.58m | 5:38PM1.62m | 5:57AM1.48m | 6:09PM1.50m | 6:32AM1.36m | 6:43PM1.36m | ||||||||||||||||||
Low Tide | 11:17PM0.41m | 11:21AM0.48m | 11:46PM0.52m | 11:50AM0.60m | 00:18AM0.63m | 12:24PM0.73m | ||||||||||||||||||
 |  |  | | |  | |  | |  |  | | | |  | | | | | | | | | | |
 | — | 6:46 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:43 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — |
mm | 1 | 1 | — | — | — | — | 4 | 6 | 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 14 | 16 | 15 | 15 | 14 | 13 | 13 | 14 | 14 | 14 | 15 | 15 | 14 | 13 | 13 | 12 | 12 | 14 | 16 | 16 | 14 | 14 |
Feels °C | 12 | 12 | 9 | 9 | 7 | 8 | 8 | 11 | 8 | 8 | 6 | 6 | 7 | 7 | 6 | 7 | 7 | 6 | 6 | 6 | 8 | 7 | 6 | 7 |
Swell 1 Height (m) Direction Period (s) | SW 11 | SW 11 | SW 11 | SW 11 | SW 17 | SW 16 | SW 15 | SW 15 | WSW 14 | WSW 14 | SW 13 | SW 13 | WSW 13 | SW 13 | SW 13 | SSW 13 | SSW 13 | SSW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 |
| kJ | 250 | 233 | 165 | 202 | 459 | 1001 | 1417 | 2662 | 4456 | 3659 | 2715 | 2528 | 1901 | 1086 | 991 | 2005 | 2431 | 2210 | 1381 | 1347 | 1092 | 990 | 836 | 822 |
Swell 2 Height (m) Direction Period (s) | SE 13 | S 13 | SW 16 | SW 18 | SW 11 | SE 13 | SW 15 | WNW 8 | NNW 7 | SW 15 | SW 14 | SW 14 | SW 14 | W 13 | WSW 13 | W 13 | W 12 | W 12 | W 12 | — | — | — | — | — |
| kJ | 7 | 3 | 69 | 192 | 155 | 7 | 1741 | 382 | 51 | 305 | 821 | 849 | 526 | 987 | 888 | 556 | 319 | 196 | 180 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | ESE 13 | — | — | SE 13 | — | SE 13 | NNW 7 | — | NNW 7 | SW 14 | WSW 14 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 17 | — | — | 7 | — | 7 | 63 | — | 18 | 780 | 378 | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 8 | NW 8 | NW 7 | NW 6 | NW 7 | NW 7 | NW 8 | — | — | — | — | — | S 5 | SSE 5 | SSE 5 | SE 5 | SE 6 | SE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 |
| kJ | 269 | 244 | 301 | 331 | 572 | 740 | 824 | — | — | — | — | — | 85 | 93 | 86 | 86 | 97 | 154 | 210 | 226 | 271 | 280 | 255 | 230 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 17 | 17 | 191 | 277 | 283 | 191 | 192 | 17 | 139 | 907 | 344 | 325 | 177 | 174 | 232 | 13 | 13 | 13 | 13 | 53 | 138 | 177 | 177 | 53 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
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