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Cable Bay (Porth Trecastell) Surf Forecast
/ Wales – Anglesy (10 surf breaks) /
Surf Forecasts:
Cable Bay (Porth Trecastell) surfForecast / Wales – Anglesy / UK
48hr Weather and Surf, issued 6 pm Saturday 09 May 2026 BSTForecast update in hr min s Forecast update imminent
Cable Bay (Porth Trecastell) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Cable Bay (Porth Trecastell) sea temperature is
11.2° C
(Which is 1.0°C warmer than normal for this time of year)How big are the waves at Cable Bay (Porth Trecastell) today?
The current surf forecast for Cable Bay (Porth Trecastell) at 12AM is: 0.5m 6s primary swell from a Northwest direction (forecast issued at 06:00pm May 09). An open ocean swell of 1.1m 5s is not directed at the surf break. The wind direction is predicted to be offshore.
Updates in hr min s Forecast update imminent
Short Range ForecastSome drizzle, heaviest during Tue morning. Very mild (max 11°C on Tue morning, min 7°C on Sat night). Mainly fresh winds. | ||||||||||||||||||||||||
Sat 9 | Sunday 10 | Monday 11 | Tue 12 | |||||||||||||||||||||
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 | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
NNW 6 | N 6 | N 6 | NW 6 | N 5 | NNE 5 | NNE 4 | N 4 | N 4 | N 4 | N 4 | N 4 | S 10 | SW 9 | SW 9 | SW 9 | WNW 4 | SW 8 | SW 8 | SW 8 | SW 8 | W 4 | WNW 4 | WNW 5 | |
0 | 0 | 0 | 16 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 12 | 31 | 39 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | off | off | off | off | off | off | off | cross-off | cross-off | cross-off | cross | cross | cross | cross-off | off | cross-off | cross-off | glassy | on | on | cross-on | cross-on | cross | |
High Tide | 3:35PM2.70m | 4:03AM3.02m | 5:07PM2.74m | 5:18AM3.10m | 6:13PM2.91m | 6:16AM3.28m | ||||||||||||||||||
Low Tide | 10:04PM1.47m | 10:56AM1.29m | 11:13PM1.47m | 12:04PM1.15m | 00:22AM1.35m | |||||||||||||||||||
 | |  |  | |  | | | | |  | | | | |  | | | | | | |  | | |
 | — | — | — | — | 5:28 | — | — | — | — | — | — | — | 5:26 | — | — | — | — | — | — | — | 5:24 | — | — | — |
 | — | 8:59 | — | — | — | — | — | — | — | 9:00 | — | — | — | — | — | — | — | 9:02 | — | — | — | — | — | 9:05 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | |
Temp °C | 10 | 10 | 9 | 8 | 8 | 7 | 8 | 9 | 9 | 9 | 9 | 8 | 9 | 9 | 8 | 8 | 9 | 8 | 8 | 8 | 9 | 9 | 10 | 11 |
4 | 5 | 3 | 2 | 2 | 1 | 2 | 3 | 3 | 4 | 5 | 4 | 4 | 4 | 2 | 3 | 4 | 3 | 5 | 4 | 4 | 3 | 3 | 5 | |
Swell 1 Height (m) Direction Period (s) | — | — | — | NW 6 | NW 6 | NW 5 | NNW 5 | — | — | — | — | — | S 10 | SW 9 | SW 9 | SW 9 | WNW 4 | N 5 | NNW 4 | NNW 4 | N 4 | SW 9 | SSW 9 | SSW 8 |
 kJ | — | — | — | 16 | 8 | 7 | 2 | — | — | — | — | — | 2 | 3 | 3 | 3 | 3 | 10 | 4 | 1 | 1 | 3 | 7 | 7 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 9 | WNW 3 | NE 4 | SW 8 | SW 8 | — | — | SSW 8 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 1 | 1 | 3 | 3 | — | — | 7 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 8 | SW 8 | NE 4 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 3 | 1 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 6 | N 6 | N 6 | N 5 | N 5 | NNE 5 | NNE 4 | N 4 | N 4 | N 4 | N 4 | N 4 | NNW 4 | NNW 5 | NNW 6 | N 6 | N 5 | — | — | — | SW 2 | W 4 | WNW 4 | WNW 5 |
| kJ | 131 | 106 | 101 | 55 | 42 | 31 | 20 | 12 | 9 | 6 | 6 | 9 | 20 | 62 | 109 | 62 | 25 | — | — | — | 1 | 12 | 31 | 39 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 542 | 87 | 579 | 596 | 313 | 296 | 393 | 631 | 277 | 296 | 298 | 333 | 284 | 284 | 258 | 284 | 284 | 261 | 256 | 221 | 221 | 277 | 290 | 1088 |
Best forecast wave conditions in Anglesy | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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