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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 11 pm Friday 27 Mar 2026 GMTForecast 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
8.9° C
(Which is 1.1°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 3AM is: 1.6m 6s primary swell from a West-northwest direction and 0.1m 17s secondary swell from a Northwest direction, 0.1m 18s secondary swell from a Southwest direction (forecast issued at 11:00pm March 27). The wind direction is predicted to be cross-onshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (28 Mar) | 6ft (1.9m) | 6s |
| Afternoon (28 Mar) | 6ft (1.8m) | 6s |
| Evening (28 Mar) | 0.5ft (0.1m) | 6s |
Table - waves today at Cable Bay (Porth Trecastell). (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 28 | Sunday 29 | Monday 30 | ||||||||||||||||||||||
| 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 | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 4 | 5 | 6 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 7 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 74 | 145 | 160 | 188 | 244 | 269 | 247 | 212 | 1 | 100 | 30 | 85 | 195 | 540 | 436 | 325 | 311 | 125 | 224 | 255 | 236 | 147 | 21 | 11 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- on | cross- on | cross | cross | cross | cross | cross | cross | cross- on | cross- on | on | on | on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross |
High Tide / height (m) | 5:30AM 3.24 | 6:35PM 3.14 | 6:41AM 3.52 | 7:27PM 3.38 | 7:29AM 3.81 | |||||||||||||||||||
Low Tide / height (m) | 11:39PM 1.25 | 12:25PM 0.80 | 12:50AM 0.99 | 1:26PM 0.48 | 1:43AM 0.68 | 2:14PM 0.20 | ||||||||||||||||||
Saturday 28 | Sunday 29 | Monday 30 | ||||||||||||||||||||||
| Sunrise | - | - | - | - | 6:01 | - | - | - | - | - | - | - | 6:00 | - | - | - | - | - | - | 5:56 | - | - | - | - |
| Sunset | - | - | - | - | - | - | - | 6:44 | - | - | - | - | - | - | - | 6:45 | - | - | - | - | - | - | - | 6:47 |
 | |  |  |  | |  | |  | | | | |  |  |  | | | | | | | | | |
Rain (mm) | - | - | - | 1 | 1 | 1 | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 7 | 7 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 9 | 10 | 10 | 8 | 7 | 7 | 8 | 8 | 9 | 9 |
| Feels °C (?) | -1 | -2 | -3 | -3 | -3 | -2 | -1 | 0 | 1 | 1 | 1 | -1 | -2 | -2 | 1 | 4 | 2 | 0 | -1 | 0 | 1 | 2 | 3 | 4 |
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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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