Surf Forecasts:
How big are the waves at Cable Bay (Porth Trecastell) today (20 Aug):
- Afternoon surf: Afternoon surf (20 Aug, local time) - 2.5ft (0.8m), 4s period with SW swell.
- Evening surf: Evening surf (20 Aug, local time) - 3.5ft (1.0m), 5s period with SW swell.
The current surf forecast for Cable Bay (Porth Trecastell) at 12AM is: 0.9m 6s primary swell from a Southwest direction and 0.1m 16s secondary swell from a Southwest direction, 0.6m 4s secondary swell from a West-northwest direction (forecast issued at 06:00pm August 19). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Aug) | - | - |
| Afternoon (20 Aug) | 2.5ft (0.8m) | 4s |
| Evening (20 Aug) | 3.5ft (1.0m) | 5s |
Table - waves today at Cable Bay (Porth Trecastell). (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 14mm), heaviest on Thu morning. Very mild (max 17°C on Wed afternoon, min 12°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Wed 19 | Thursday 20 | Friday 21 | |||||||||||||||||
4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | SW 4 | SW 5 | SW 5 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 |
Wave Graph  | |||||||||||||||||||
 kJ | 26 | 43 | 45 | 44 | 46 | 26 | 16 | 15 | 10 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | cross | cross-off | cross-off | 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 | 2:29PM3.25m | 2:56AM3.21m | 3:26PM3.00m | 4:05AM2.90m | 4:46PM2.83m | ||||||||||||||
Low Tide | 9:10PM1.10m | 9:40AM1.27m | 10:08PM1.38m | 10:45AM1.54m | |||||||||||||||
 |  |  | | | |  | | |  |  | |  | | | | |  | | |
 | — | — | — | — | 6:05 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — |
 | — | 8:37 | — | — | — | — | — | — | — | 8:36 | — | — | — | — | — | — | — | 8:32 | — |
mm | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 17 | 16 | 15 | 14 | 14 | 16 | 14 | 15 | 15 | 14 | 13 | 12 | 12 | 14 | 16 | 17 | 15 | 14 |
Feels °C | 12 | 13 | 15 | 12 | 11 | 12 | 13 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 11 | 13 | 13 | 11 | 11 |
Swell 1 Height (m) Direction Period (s) | WNW 4 | SW 15 | SW 16 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SSW 6 | SSW 6 | SW 6 | SW 6 | W 4 | WNW 4 | W 3 | SW 13 | SW 13 |
| kJ | 1 | 9 | 10 | 44 | 46 | 26 | 16 | 15 | 10 | 6 | 4 | 4 | 1 | 1 | 3 | 3 | 1 | 7 | 7 |
Swell 2 Height (m) Direction Period (s) | S 15 | — | — | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 6 | SW 6 | SW 6 | SW 6 | S 6 |
| kJ | 5 | — | — | 10 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 1 | 1 | 1 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 14 | SW 13 | SW 13 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 7 | 7 | 7 | — | — |
Wind waves Height (m) Direction Period (s) | SW 4 | SW 5 | SW 5 | WNW 4 | WNW 4 | NW 4 | NNW 5 | N 5 | N 5 | N 5 | N 5 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | N 4 | N 4 | N 4 | NNW 4 |
| kJ | 26 | 43 | 45 | 11 | 14 | 16 | 57 | 86 | 79 | 60 | 39 | 53 | 58 | 49 | 24 | 10 | 11 | 14 | 34 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 244 | 168 | 244 | 506 | 44 | 0 | 167 | 49 | 541 | 185 | 185 | 185 | 185 | 185 | 185 | 284 | 284 | 180 | 272 |
Best forecast wave conditions in Anglesy | |||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||
Header Global | |||||||||||||||||||
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