Surf Forecasts:
How big are the waves at Thermopylae today (21 Jul):
- Morning surf: Morning surf (21 Jul, local time) - 7ft (2.2m), 14s period with SW swell.
- Afternoon surf: Afternoon surf (21 Jul, local time) - 8ft (2.5m), 14s period with SW swell.
- Evening surf: Evening surf (21 Jul, local time) - 8ft (2.5m), 13s period with SW swell.
The current surf forecast for Thermopylae at 10PM is: 2.5m 13s primary swell from a Southwest direction (forecast issued at 01:00pm July 21). An open ocean swell of 0.4m 11s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 4.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Jul) | 7ft (2.2m) | 14s |
| Afternoon (21 Jul) | 8ft (2.5m) | 14s |
| Evening (21 Jul) | 8ft (2.5m) | 13s |
Table - waves today at Thermopylae. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 3mm), mostly falling on Thu morning. Very mild (max 14°C on Tue afternoon, min 11°C on Wed night). Wind will be generally light. | |||||||||||||||||||||
Tue 21 | Wednesday 22 | Thursday 23 | |||||||||||||||||||
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 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | WSW 12 | WSW 12 | WSW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 18 | SW 17 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2290 | 2603 | 2570 | 2305 | 2114 | 1697 | 1550 | 1404 | 1381 | 1313 | 1209 | 1031 | 843 | 821 | 905 | 915 | 928 | 1053 | 1325 | 4484 | 9015 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross | cross-off | cross-off | cross | glassy | cross-off | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-off | cross-off | cross | cross | cross | cross-off | cross-off |
High Tide | 8:20AM1.30m | 8:49PM1.42m | 9:27AM1.22m | 9:56PM1.35m | 10:55AM1.20m | ||||||||||||||||
Low Tide | 2:19PM0.71m | 3:28AM0.73m | 3:26PM0.79m | 4:45AM0.76m | 4:51PM0.84m | ||||||||||||||||
 |  | |  |  | | | | | | | | | | | |  | | | | | |
 | — | — | — | — | — | — | 7:46 | — | — | — | — | — | — | — | 7:45 | — | — | — | — | — | — |
 | — | — | 5:59 | — | — | — | — | — | — | — | 5:59 | — | — | — | — | — | — | — | 6:00 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | — | — |
Temp °C | 13 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 13 | 14 | 14 | 13 | 13 | 11 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |
Feels °C | 12 | 13 | 13 | 11 | 12 | 12 | 11 | 10 | 12 | 11 | 11 | 11 | 10 | 7 | 6 | 6 | 7 | 9 | 11 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | WSW 12 | WSW 12 | WSW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 18 | SW 17 |
| kJ | 2290 | 2603 | 2570 | 2305 | 2114 | 1697 | 1550 | 1404 | 1381 | 1313 | 1209 | 1031 | 843 | 821 | 905 | 915 | 928 | 1053 | 1325 | 4484 | 9015 |
Swell 2 Height (m) Direction Period (s) | W 9 | W 9 | W 9 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 12 | SSW 12 | WSW 12 | WSW 12 | SW 12 | SW 19 | SW 11 | — |
| kJ | 25 | 25 | 14 | 31 | 30 | 30 | 18 | 18 | 43 | 72 | 158 | 145 | 418 | 318 | 250 | 184 | 233 | 37 | 959 | 1152 | — |
Swell 3 Height (m) Direction Period (s) | SE 11 | W 9 | W 9 | — | — | — | — | — | ESE 11 | ESE 11 | ESE 11 | ESE 11 | ESE 14 | ESE 13 | ESE 13 | ESE 13 | W 6 | SW 21 | WSW 13 | WSW 12 | — |
| kJ | 43 | 14 | 14 | — | — | — | — | — | 12 | 12 | 12 | 12 | 18 | 18 | 17 | 17 | 21 | 115 | 154 | 175 | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | NNW 3 | NW 3 | NNW 4 | NNW 4 | N 5 | NNW 5 | NW 5 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 7 | 5 | 12 | 27 | 52 | 56 | 57 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 17 | 17 | 17 | 17 | 11 | 11 | 31 | 31 | 31 | 31 | 6 | 0 | 0 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
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