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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 am Tuesday 28 Apr 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
10.8° C
(Which is 1.5°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 10AM is: 0.1m 7s primary swell from a Southwest direction (forecast issued at 06:00am April 28). An open ocean swell of 0.3m 4s is not directed at the surf break, a second open ocean swell of 0.5m 3s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (28 Apr) | 0.5ft (0.1m) | 7s |
| Afternoon (28 Apr) | 0.5ft (0.1m) | 15s |
| Evening (28 Apr) | 0.5ft (0.1m) | 14s |
Table - waves today at Cable Bay (Porth Trecastell). (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 18°C on Thu afternoon, min 6°C on Tue night). Winds decreasing (fresh winds from the E on Wed afternoon, light winds from the E by Thu night). | ||||||||||||||||||||||||
Tuesday 28 | Wednesday 29 | Thursday 30 | Fri 1 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
SW 7 | SW 7 | SW 7 | W 15 | W 15 | SW 7 | W 14 | W 13 | W 13 | W 13 | W 13 | W 13 | W 13 | W 12 | ENE 4 | W 12 | W 12 | W 12 | SSE 5 | SSE 5 | SE 4 | SSE 4 | SSE 4 | SSE 4 | |
2 | 2 | 2 | 4 | 4 | 2 | 4 | 4 | 4 | 4 | 7 | 3 | 3 | 6 | 0 | 6 | 6 | 5 | 5 | 8 | 14 | 6 | 10 | 6 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | off | off | off | off | off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | |
High Tide | 7:59AM3.72m | 8:34PM3.54m | 8:38AM3.84m | 9:06PM3.71m | 9:14AM3.92m | 9:36PM3.84m | ||||||||||||||||||
Low Tide | 2:46PM0.36m | 3:03AM0.59m | 3:27PM0.26m | 3:43AM0.44m | 4:04PM0.23m | |||||||||||||||||||
 |  | |  | | | | | | | | | | | | | | | |  | | |  | | |
 | 5:50 | — | — | — | — | — | — | — | 5:48 | — | — | — | — | — | — | — | 5:47 | — | — | — | — | — | — | 5:45 |
 | — | — | — | — | — | 8:39 | — | — | — | — | — | — | — | 8:42 | — | — | — | — | — | — | — | 8:44 | — | 8:45 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 11 | 8 | 9 | 10 | 11 | 11 | 10 | 8 | 7 | 6 | 9 | 13 | 15 | 13 | 10 | 10 | 10 | 10 | 13 | 16 | 18 | 18 | 16 | 14 |
7 | 2 | 3 | 4 | 5 | 7 | 4 | 2 | 0 | -2 | 2 | 5 | 8 | 5 | 2 | 3 | 4 | 4 | 8 | 12 | 15 | 15 | 14 | 11 | |
Swell 1 Height (m) Direction Period (s) | N 4 | N 4 | NNW 4 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | SW 7 | W 13 | W 13 | W 12 | — | W 12 | W 12 | W 12 | NE 6 | NE 6 | SSE 5 | NE 5 | NE 4 | NE 4 |
 kJ | 15 | 10 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | — | 3 | 3 | 3 | 20 | 11 | 7 | 4 | 3 | 1 |
Swell 2 Height (m) Direction Period (s) | SW 7 | SW 7 | SW 7 | W 15 | — | — | W 14 | W 13 | W 13 | W 13 | W 13 | — | — | SW 12 | — | SW 12 | SW 12 | NE 6 | SSE 5 | SSE 5 | NE 5 | S 7 | S 6 | S 6 |
| kJ | 2 | 2 | 2 | 4 | — | — | 4 | 4 | 4 | 4 | 3 | — | — | 6 | — | 6 | 6 | 2 | 5 | 8 | 7 | 1 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | W 15 | W 15 | — | — | W 13 | — | — | SW 13 | — | SW 7 | — | — | — | — | SW 12 | — | — | W 11 | — | — | — |
| kJ | — | — | — | 4 | 4 | — | — | 3 | — | — | 7 | — | 2 | — | — | — | — | 5 | — | — | 2 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | ENE 3 | NE 3 | NE 4 | NE 4 | NNE 4 | NE 4 | NE 4 | NE 4 | ENE 4 | ENE 5 | NE 5 | NE 5 | ENE 5 | ENE 4 | ENE 6 | ENE 6 | ENE 6 | E 3 | SSE 4 | SE 4 | SSE 4 | SSE 4 | SSE 4 |
| kJ | — | 3 | 5 | 12 | 14 | 17 | 16 | 17 | 18 | 34 | 47 | 57 | 42 | 36 | 27 | 58 | 49 | 45 | 2 | 8 | 14 | 6 | 10 | 6 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 158 | 178 | 158 | 173 | 158 | 158 | 172 | 172 | 256 | 256 | 258 | 258 | 256 | 244 | 256 | 258 | 258 | 261 | 258 | 258 | 258 | 231 | 158 | 158 |
Best forecast wave conditions in Anglesy | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Ocean Swells (m)- Wind Speed (km/h)
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