- Forecast
- Maps
- Live
- Weather State
- Spot Information
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 am Wednesday 13 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
11.5° C
(Which is 1.2°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 11AM is: 2.3m 6s primary swell from a Northwest direction and 0.5m 7s secondary swell from a Southwest direction, 0.1m 16s secondary swell from a Southwest direction (forecast issued at 06:00am May 13). The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 May) | 7ft (2.2m) | 6s |
| Afternoon (13 May) | 1.5ft (0.4m) | 7s |
| Evening (13 May) | 1ft (0.3m) | 7s |
Table - waves today at Cable Bay (Porth Trecastell). (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 5mm), mostly falling on Wed morning. Very mild (max 11°C on Wed afternoon, min 8°C on Wed night). Winds decreasing (strong winds from the NW on Wed morning, light winds from the W by Fri night). | ||||||||||||||||||||||||
Wednesday 13 | Thursday 14 | Friday 15 | Sat 16 | |||||||||||||||||||||
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 | 4 PM | 7 PM | 10 PM | 1 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
WNW 6 | NW 6 | NW 6 | NW 7 | SW 7 | SW 7 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | |
280 | 364 | 426 | 342 | 19 | 14 | 10 | 10 | 10 | 10 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross | cross | 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 | cross-off | cross-off | cross-off | cross-off | cross-on | |
High Tide | 7:03AM3.52m | 7:41PM3.46m | 7:48AM3.79m | 8:21PM3.75m | 8:32AM4.03m | 9:00PM4.00m | ||||||||||||||||||
Low Tide | 1:55PM0.61m | 2:15AM0.82m | 2:43PM0.34m | 3:03AM0.52m | 3:29PM0.12m | |||||||||||||||||||
 |  |  |  | | |  | | | | | | | | |  | |  | | | | | |  | |
 | 5:22 | — | — | — | — | — | — | — | 5:20 | — | — | — | — | — | — | — | 5:18 | — | — | — | — | — | — | 5:18 |
 | — | — | — | — | — | 9:06 | — | — | — | — | — | — | — | 9:07 | — | — | — | — | — | — | — | 9:09 | — | 9:10 |
1 | 1 | 1 | — | — | 1 | — | — | — | — | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 8 | 8 | 9 | 10 | 11 | 10 | 9 | 8 | 8 | 8 | 9 | 9 | 10 | 10 | 9 | 9 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 |
-1 | -1 | 0 | 1 | 4 | 3 | 1 | -1 | -1 | 0 | 1 | 1 | 2 | 4 | 4 | 3 | 2 | 2 | 2 | 3 | 3 | 4 | 6 | 6 | |
Swell 1 Height (m) Direction Period (s) | SSW 8 | SW 6 | SW 6 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | NNW 5 | N 5 |
 kJ | 6 | 31 | 20 | 25 | 19 | 14 | 2 | 2 | 2 | 2 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 39 | 27 |
Swell 2 Height (m) Direction Period (s) | SW 18 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 8 | SW 16 | SW 16 | SW 16 | SW 7 | S 7 | — | SW 14 | — | SW 14 | — | — | — | — | — | — | SW 13 | SW 13 |
| kJ | 12 | 12 | 11 | 10 | 10 | 10 | 3 | 10 | 10 | 10 | 2 | 1 | — | 8 | — | 8 | — | — | — | — | — | — | 7 | 7 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | SW 16 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 6 | NW 6 | NW 6 | NW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 5 | NNW 5 | — | — |
| kJ | 280 | 364 | 426 | 342 | 282 | 261 | 408 | 622 | 639 | 436 | 331 | 263 | 167 | 198 | 188 | 139 | 190 | 119 | 104 | 81 | 62 | 45 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 277 | 295 | 592 | 605 | 886 | 1072 | 618 | 605 | 338 | 339 | 1069 | 1321 | 284 | 284 | 75 | 186 | 329 | 40 | 325 | 329 | 284 | 272 | 53 | 272 |
Best forecast wave conditions in Anglesy | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Cable Bay (Porth Trecastell) surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest