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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 pm Thursday 30 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
10.7° 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 1AM is: 0.4m 4s primary swell from a South-southeast direction (forecast issued at 06:00pm April 30). An open ocean swell of 0.1m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (01 May) | 1.5ft (0.5m) | 4s |
| Afternoon (01 May) | 1.5ft (0.5m) | 4s |
| 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 ForecastModerate rain (total 13mm), heaviest on Sat night. Warm (max 20°C on Thu afternoon, min 10°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Thu 30 | Friday 1 | Saturday 2 | Sun 3 | |||||||||||||||||||||
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 | 4 AM | 7 AM | 10 AM | 1 PM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SSE 4 | SSE 4 | SSE 4 | SSE 4 | SSE 4 | S 4 | S 4 | S 4 | S 3 | SSW 4 | SSW 4 | SW 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | SSW 5 | SSW 5 | SSW 5 | SW 5 | SSW 5 | SW 5 | SW 5 | SW 5 | |
8 | 8 | 11 | 6 | 3 | 5 | 6 | 6 | 6 | 11 | 14 | 18 | 19 | 22 | 24 | 34 | 32 | 21 | 17 | 13 | 11 | 7 | 7 | 7 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | cross-off | cross-off | cross | cross-on | cross | |
High Tide | 9:36PM3.84m | 9:49AM3.96m | 10:07PM3.92m | 10:23AM3.94m | 10:39PM3.94m | 10:58AM3.86m | ||||||||||||||||||
Low Tide | 4:04PM0.23m | 4:20AM0.34m | 4:38PM0.27m | 4:55AM0.31m | 5:12PM0.35m | 5:29AM0.34m | ||||||||||||||||||
 |  |  |  | |  | | | | | | |  | | | |  | | |  | | | | | |
 | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:43 | — | — | — | — | — | — | — | 5:41 | — | — | — |
 | — | 8:44 | — | — | — | — | — | — | — | 8:45 | — | — | — | — | — | — | — | 8:46 | — | — | — | — | — | 8:49 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | — | 3 | 3 | 3 | 1 | — | |
Temp °C | 20 | 19 | 17 | 15 | 15 | 14 | 12 | 12 | 13 | 12 | 11 | 11 | 10 | 10 | 11 | 13 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 |
16 | 16 | 15 | 12 | 13 | 11 | 9 | 9 | 9 | 8 | 8 | 8 | 7 | 7 | 7 | 9 | 8 | 10 | 11 | 8 | 8 | 8 | 8 | 8 | |
Swell 1 Height (m) Direction Period (s) | NE 5 | NE 5 | NNE 4 | NE 4 | NE 5 | NE 4 | NE 4 | NE 4 | — | — | — | W 11 | W 11 | — | — | — | SW 5 | SSW 5 | SSW 5 | SW 5 | SSW 5 | SW 5 | SW 5 | SW 5 |
 kJ | 10 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | — | — | — | 2 | 2 | — | — | — | 17 | 21 | 17 | 13 | 11 | 7 | 7 | 7 |
Swell 2 Height (m) Direction Period (s) | NE 6 | N 5 | — | — | S 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 1 | 1 | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | W 11 | SW 11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 2 | 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 4 | SSE 4 | SSE 4 | SSE 4 | SSE 4 | S 4 | S 4 | S 4 | S 3 | SSW 4 | SSW 4 | SW 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | SSW 5 | — | — | — | — | — | — | — |
| kJ | 8 | 8 | 11 | 6 | 3 | 5 | 6 | 6 | 6 | 11 | 14 | 18 | 19 | 22 | 24 | 34 | 32 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 258 | 229 | 228 | 232 | 232 | 181 | 198 | 256 | 256 | 256 | 231 | 231 | 181 | 181 | 233 | 256 | 181 | 180 | 258 | 258 | 258 | 256 | 258 | 264 |
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)
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Ocean Swells (m)- Wind Speed (km/h)
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