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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 Wednesday 06 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
11.0° C
(Which is 1.1°C warmer than normal for this time of year)| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (07 May) | 1.5ft (0.5m) | 3s |
| Afternoon (07 May) | 2.5ft (0.7m) | 4s |
| Evening (07 May) | 1.5ft (0.5m) | 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 ForecastSome drizzle, heaviest during Fri night. Very mild (max 12°C on Fri afternoon, min 8°C on Fri night). Winds increasing (calm on Wed afternoon, fresh winds from the NE by Sat morning). | ||||||||||||||||||||||||
Wed 6 | Thursday 7 | Friday 8 | Sat 9 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
NE 4 | — | — | — | — | — | S 3 | S 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | SW 4 | SSW 4 | SW 4 | SW 4 | SSW 3 | N 3 | N 4 | N 4 | N 5 | N 5 | NNW 5 | NNW 5 | |
0 | 0 | 0 | 0 | 0 | 0 | 8 | 22 | 12 | 8 | 8 | 10 | 14 | 10 | 3 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | glassy | glassy | cross | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross | off | off | off | off | off | cross-off | off | off | |
High Tide | 1:00AM3.41m | 1:26PM3.05m | 1:45AM3.22m | 2:18PM2.83m | 2:44AM3.07m | |||||||||||||||||||
Low Tide | 7:31PM1.03m | 8:01AM0.98m | 8:13PM1.21m | 8:51AM1.17m | 9:03PM1.37m | 9:50AM1.29m | ||||||||||||||||||
 |  |  | |  |  | | | | | | | | | | | | |  | |  | | | | |
 | — | — | — | — | 5:33 | — | — | — | — | — | — | — | 5:31 | — | — | — | — | — | — | — | 5:30 | — | — | — |
 | — | 8:53 | — | — | — | — | — | — | — | 8:55 | — | — | — | — | — | — | — | 8:58 | — | — | — | — | — | 8:59 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | |
Temp °C | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 10 | 10 | 9 | 9 | 11 | 11 | 12 | 11 | 10 | 10 | 9 | 8 | 10 | 10 |
7 | 8 | 8 | 7 | 7 | 6 | 5 | 5 | 6 | 7 | 6 | 6 | 5 | 6 | 9 | 8 | 8 | 6 | 5 | 6 | 4 | 3 | 6 | 4 | |
Swell 1 Height (m) Direction Period (s) | NE 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 4 | SW 4 | SSW 3 | — | — | — | — | — | — | — |
 kJ | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 3 | 1 | — | — | — | — | — | — | — |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | S 3 | S 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | SW 4 | SSW 4 | — | — | — | N 3 | N 4 | N 4 | N 5 | N 5 | NNW 5 | NNW 5 |
| kJ | — | — | — | — | — | — | 8 | 22 | 12 | 8 | 8 | 10 | 14 | 10 | — | — | — | 5 | 13 | 32 | 62 | 52 | 42 | 38 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 259 | 259 | 279 | 277 | 277 | 277 | 286 | 286 | 261 | 256 | 261 | 256 | 256 | 261 | 244 | 285 | 286 | 244 | 244 | 244 | 260 | 263 | 260 | 246 |
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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