Surf Forecasts:
How big are the waves at Thermopylae today (11 Sep):
- Morning surf: Morning surf (11 Sep, local time) - 6ft (1.8m), 12s period with WSW swell.
- Afternoon surf: Afternoon surf (11 Sep, local time) - 5ft (1.6m), 12s period with WSW swell.
- Evening surf: Evening surf (11 Sep, local time) - 8ft (2.4m), 7s period with SSE swell.
The current surf forecast for Thermopylae at 7PM is: 2.5m 7s primary swell from a South-southeast direction and 1.5m 12s secondary swell from a West-southwest direction, 0.3m 15s secondary swell from a Southwest direction (forecast issued at 01:00pm September 11). The wind direction is predicted to be cross-offshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Sep) | 6ft (1.8m) | 12s |
| Afternoon (11 Sep) | 5ft (1.6m) | 12s |
| Evening (11 Sep) | 8ft (2.4m) | 7s |
Table - waves today at Thermopylae. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 9mm), mostly falling on Sun night. Warm (max 21°C on Sun afternoon, min 15°C on Fri night). Winds increasing (calm on Sun night, fresh winds from the N by Mon morning). | |||||||||||||||||||||
Fri 11 | Saturday 12 | Sunday 13 | |||||||||||||||||||
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) | WSW 12 | WSW 12 | WSW 12 | WSW 12 | SSE 7 | SSE 7 | SW 14 | SW 14 | SW 15 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 967 | 816 | 710 | 657 | 627 | 503 | 716 | 1253 | 1647 | 1371 | 3233 | 3212 | 2888 | 2482 | 2140 | 1855 | 1550 | 1262 | 1029 | 852 | 755 |
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-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | cross |
High Tide | 3:33PM1.89m | 3:51AM1.77m | 4:05PM1.88m | 4:23AM1.74m | 4:37PM1.83m | ||||||||||||||||
Low Tide | 9:22AM0.26m | 9:48PM0.24m | 9:53AM0.27m | 10:19PM0.26m | 10:23AM0.31m | 10:48PM0.33m | |||||||||||||||
 |  | |  |  | | | | | | | | | | | | | |  |  | | |
 | — | — | — | — | — | — | 6:50 | — | — | — | — | — | — | — | 6:48 | — | — | — | — | — | — |
 | — | — | 6:34 | — | — | — | — | — | — | — | 6:35 | — | — | — | — | — | — | — | 6:36 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 2 |
Temp °C | 16 | 18 | 17 | 15 | 15 | 15 | 15 | 16 | 17 | 16 | 18 | 16 | 16 | 16 | 16 | 16 | 18 | 21 | 20 | 17 | 16 |
Feels °C | 13 | 14 | 13 | 11 | 12 | 12 | 12 | 13 | 14 | 11 | 14 | 14 | 14 | 15 | 14 | 15 | 17 | 20 | 18 | 19 | 15 |
Swell 1 Height (m) Direction Period (s) | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | SW 14 | SW 14 | SW 15 | SW 14 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 |
| kJ | 967 | 816 | 710 | 575 | 467 | 386 | 716 | 1253 | 1647 | 1067 | 3233 | 3212 | 2888 | 2482 | 2140 | 1855 | 1550 | 1262 | 1029 | 852 | 755 |
Swell 2 Height (m) Direction Period (s) | — | — | — | SW 15 | SW 15 | SW 14 | WSW 12 | — | — | SW 17 | — | — | — | — | SSE 8 | SSE 9 | SSE 8 | SSE 12 | SSE 12 | SSE 8 | SSE 8 |
| kJ | — | — | — | 34 | 76 | 248 | 237 | — | — | 1371 | — | — | — | — | 202 | 257 | 216 | 28 | 56 | 306 | 163 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | SSW 10 | SSW 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | 34 | 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SE 9 | SE 9 | SE 9 | SSE 8 | SSE 8 | SE 9 | — |
| kJ | 432 | 512 | 686 | 657 | 627 | 503 | 472 | 449 | 475 | 435 | 518 | 362 | 272 | 228 | 655 | 822 | 690 | 217 | 257 | 816 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 405 | 405 | 13 | 1 | 1 | 1 | 13 | 1 | 344 | 8 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 139 | 0 | 6 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
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