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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 5 am Monday 17 Nov 2025 GMT
How big are the waves at Cable Bay (Porth Trecastell) today?
The current surf forecast for Cable Bay (Porth Trecastell) at 12PM is: 0.4m 9s primary swell from a Southwest direction and 0.1m 14s secondary swell from a Southwest direction (forecast issued at 05:00am November 17). An open ocean swell of 0.8m 5s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Nov) | 1.5ft (0.4m) | 9s |
| Afternoon (17 Nov) | 1.5ft (0.4m) | 9s |
| Evening (17 Nov) | 1.5ft (0.4m) | 9s |
Table - waves today at Cable Bay (Porth Trecastell). (Swell directed towards the surf break)
Monday 17 | Tuesday 18 | Wednesday 19 | Thu 20 | |||||||||||||||||||||
| 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 4 | 4 | 5 | 5 | 6 | 6 | 12 | 12 | 12 | 8 | 8 | 12 | 12 | 6 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 36 | 34 | 21 | 20 | 20 | 20 | 20 | 7 | 7 | 16 | 38 | 69 | 135 | 145 | 224 | 6 | 3 | 3 | 1 | 1 | 3 | 3 | 0 | 0 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | off | cross- off | glass | cross- on | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 7:24AM 3.50 | 7:31PM 3.66 | 7:55AM 3.66 | 8:07PM 3.73 | 8:26AM 3.77 | 8:41PM 3.77 | ||||||||||||||||||
Low Tide / height (m) | 1:58PM 0.73 | 2:18AM 0.50 | 2:36PM 0.59 | 2:52AM 0.47 | 3:11PM 0.49 | |||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thu 20 | |||||||||||||||||||||
| Sunrise | - | - | 7:45 | - | - | - | - | - | - | - | 7:47 | - | - | - | - | - | - | - | 7:48 | - | - | - | - | - |
| Sunset | - | - | - | - | 4:20 | - | - | - | - | - | - | - | 4:17 | - | - | - | - | - | - | - | 4:16 | - | - | - |
 | |  | | | |  | |  | |  |  | |  | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 1 | 1 | 1 | - | - | - | - | - | - | - |
| Temp. °C | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 7 | 8 | 9 | 9 | 9 | 9 | 6 | 4 | 5 | 5 | 6 | 6 | 5 | 5 | 5 |
| Feels °C (?) | 2 | 0 | 1 | 2 | 3 | 4 | 3 | 2 | 2 | 1 | 1 | 2 | 1 | 1 | 0 | -5 | -8 | -5 | -5 | -4 | -3 | -4 | -4 | -3 |
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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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