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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 12 am Friday 01 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
10.7° C
(Which is 1.3°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 6AM is: 0.4m 4s primary swell from a South direction (forecast issued at 12:00am May 01). An open ocean swell of 0.1m 4s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (01 May) | 1.5ft (0.4m) | 4s |
| Afternoon (01 May) | 1.5ft (0.5m) | 3s |
| Evening (01 May) | 2.5ft (0.7m) | 4s |
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 7mm), mostly falling on Sun morning. Very mild (max 18°C on Thu night, min 9°C on Sun afternoon). Wind will be generally light. | ||||||||||||||||||||||||
Friday 1 | Saturday 2 | Sunday 3 | ||||||||||||||||||||||
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 | 4 PM | 7 PM | 10 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
SSE 4 | SSE 4 | S 4 | S 3 | S 3 | S 3 | SSW 4 | SSW 4 | SW 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | SSW 5 | SSW 5 | SW 5 | SW 5 | SW 5 | SW 5 | SSW 5 | SSW 5 | SSW 5 | |
7 | 6 | 5 | 5 | 6 | 5 | 11 | 14 | 17 | 14 | 17 | 17 | 17 | 13 | 18 | 19 | 14 | 11 | 7 | 7 | 4 | 3 | 2 | 2 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | off | cross-off | cross-off | cross-off | cross-off | off | off | |
High Tide | 9:49AM3.96m | 10:07PM3.92m | 10:23AM3.94m | 10:39PM3.94m | 10:58AM3.86m | |||||||||||||||||||
Low Tide | 4:20AM0.34m | 4:38PM0.27m | 4:55AM0.31m | 5:12PM0.35m | 5:29AM0.34m | 5:44PM0.49m | ||||||||||||||||||
 | |  | |  | | | | |  | | | | | | |  | |  | | | | | | |
 | — | 5:45 | — | — | — | — | — | — | — | 5:43 | — | — | — | — | — | — | — | 5:41 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 8:45 | — | — | — | — | — | — | — | 8:46 | — | — | — | — | — | — | — | 8:49 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 | 2 | 1 | 1 | 1 | 1 | |
Temp °C | 17 | 16 | 15 | 12 | 12 | 13 | 12 | 11 | 11 | 10 | 10 | 11 | 12 | 12 | 12 | 11 | 11 | 10 | 10 | 10 | 10 | 9 | 9 | 10 |
15 | 14 | 13 | 9 | 9 | 9 | 8 | 7 | 7 | 6 | 6 | 7 | 7 | 8 | 9 | 9 | 11 | 9 | 8 | 7 | 7 | 5 | 6 | 6 | |
Swell 1 Height (m) Direction Period (s) | NE 4 | — | NE 4 | NE 4 | NE 4 | — | — | — | W 11 | — | — | — | — | — | — | SW 5 | SSW 5 | SW 5 | SW 5 | SW 5 | SW 5 | SSW 5 | SSW 5 | SSW 5 |
 kJ | 1 | — | 1 | 1 | 1 | — | — | — | 2 | — | — | — | — | — | — | 10 | 14 | 11 | 7 | 7 | 4 | 3 | 2 | 2 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 4 | SSE 4 | S 4 | S 3 | S 3 | S 3 | SSW 4 | SSW 4 | SW 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | SSW 5 | — | — | — | — | — | N 3 | NNE 4 | NNE 4 |
| kJ | 7 | 6 | 5 | 5 | 6 | 5 | 11 | 14 | 17 | 14 | 17 | 17 | 17 | 13 | 18 | 19 | — | — | — | — | — | 1 | 2 | 3 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 232 | 259 | 181 | 259 | 256 | 256 | 256 | 256 | 231 | 256 | 233 | 261 | 313 | 308 | 258 | 258 | 258 | 258 | 258 | 259 | 261 | 352 | 333 | 313 |
Best forecast wave conditions in Anglesy | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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