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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 am Monday 23 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
9.1° C
(Which is 1.4°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 5PM is: 1.1m 4s primary swell from a South-southwest direction (forecast issued at 11:00am March 23). The wind direction is predicted to be cross-onshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 Mar) | 1.5ft (0.4m) | 10s |
| Afternoon (23 Mar) | 2ft (0.6m) | 9s |
| Evening (23 Mar) | 5ft (1.5m) | 5s |
Table - waves today at Cable Bay (Porth Trecastell). (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | |||||||||||||||||||||
| 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 | 3 AM | 6 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 9 | 9 | 4 | 5 | 6 | 6 | 6 | 7 | 7 | 8 | 8 | 7 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 24 | 23 | 65 | 43 | 124 | 209 | 252 | 284 | 434 | 820 | 1108 | 881 | 740 | 604 | 372 | 595 | 675 | 524 | 437 | 434 | 22 | 10 | 9 | 9 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- on | cross- on | cross- on | cross- on | on | on | on | on | on | on | on | cross- on | cross- on | cross | cross | cross | cross | cross | cross | cross- off | cross- off | cross- off | cross |
High Tide / height (m) | 11:48AM 4.11 | 12:09AM 3.85 | 12:37PM 3.74 | 1:00AM 3.55 | 1:38PM 3.33 | 2:07AM 3.26 | ||||||||||||||||||
Low Tide / height (m) | 6:23AM 0.22 | 6:49PM 0.41 | 7:12AM 0.49 | 7:41PM 0.79 | 8:12AM 0.80 | 8:46PM 1.13 | ||||||||||||||||||
Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | |||||||||||||||||||||
| Sunrise | 6:13 | - | - | - | - | - | - | - | 6:11 | - | - | - | - | - | - | - | 6:09 | - | - | - | - | - | - | - |
| Sunset | - | - | - | 6:35 | - | - | - | - | - | - | - | 6:37 | - | - | - | - | - | - | - | 6:38 | - | - | - | - |
 |  | | |  |  | | | |  | |  |  |  | | | | | | | |  | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | 2 | 5 | 4 | 1 | 1 | 3 | 2 | - | 1 | 1 | 1 | 1 | - | - | - |
| Temp. °C | 8 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 7 | 6 | 4 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Feels °C (?) | 5 | 4 | 3 | 2 | 1 | 1 | 3 | 3 | 1 | 0 | 0 | 0 | -5 | -5 | -3 | -7 | -6 | -5 | -5 | -4 | -2 | -2 | -1 | 0 |
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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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