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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 12 am Monday 01 Jun 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
13.8° C
(Which is 2.3°C warmer than normal for this time of year)How big are the waves at Cable Bay (Porth Trecastell) today (01 Jun):
- Morning surf: Morning surf (01 Jun, local time) - 5ft (1.5m), 6s period with SSW swell.
- Afternoon surf: Afternoon surf (01 Jun, local time) - 5ft (1.6m), 6s period with SSW swell.
- Evening surf: Evening surf (01 Jun, local time) - 5ft (1.5m), 6s period with SSW swell.
The current surf forecast for Cable Bay (Porth Trecastell) at 7AM is: 1.6m 6s primary swell from a South-southwest direction and 0.3m 11s secondary swell from a Southwest direction, 0.1m 14s secondary swell from a Southwest direction (forecast issued at 12:00am June 01). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (01 Jun) | 5ft (1.5m) | 6s |
| Afternoon (01 Jun) | 5ft (1.6m) | 6s |
| Evening (01 Jun) | 5ft (1.5m) | 6s |
Table - waves today at Cable Bay (Porth Trecastell). (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 20mm), heaviest during Mon afternoon. Very mild (max 15°C on Tue night, min 12°C on Sun night). Winds increasing (light winds from the SW on Mon night, strong winds from the SSW by Wed afternoon). | ||||||||||||||||||||||||
Monday 1 | Tuesday 2 | Wednesday 3 | ||||||||||||||||||||||
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 | 4 PM | 7 PM | 10 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
SSW 5 | SSW 5 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SW 6 | SSW 6 | SW 6 | SSW 6 | SW 6 | SW 9 | SW 8 | SW 7 | SSW 4 | SSW 5 | SSW 6 | SSW 6 | SW 7 | SW 7 | |
83 | 95 | 145 | 134 | 107 | 156 | 144 | 127 | 87 | 55 | 32 | 22 | 18 | 27 | 40 | 16 | 97 | 65 | 31 | 123 | 209 | 286 | 761 | 529 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross | cross-on | cross-on | on | on | cross-on | on | cross-on | cross-on | on | on | on | on | |
High Tide | 10:18PM3.78m | 10:40AM3.62m | 10:54PM3.79m | 11:17AM3.55m | 11:31PM3.75m | 11:54AM3.43m | ||||||||||||||||||
Low Tide | 5:12AM0.49m | 5:25PM0.63m | 5:48AM0.50m | 6:00PM0.69m | 6:26AM0.57m | 6:37PM0.77m | ||||||||||||||||||
 |  |  | | | | | | | |  | | |  |  |  | | | | |  | | | | |
 | — | 4:56 | — | — | — | — | — | — | — | 4:56 | — | — | — | — | — | — | — | 4:56 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 9:34 | — | — | — | — | — | — | — | 9:35 | — | — | — | — | — | — | — | 9:36 | — |
— | 2 | 2 | 1 | 3 | 4 | 2 | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 1 | 1 | 1 | 2 | |
Temp °C | 12 | 13 | 13 | 13 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 13 | 13 | 14 | 14 | 15 | 13 | 12 | 12 | 12 | 14 | 14 | 13 | 12 |
7 | 8 | 8 | 9 | 10 | 10 | 8 | 8 | 10 | 11 | 10 | 11 | 11 | 11 | 11 | 13 | 11 | 9 | 8 | 5 | 8 | 7 | 6 | 7 | |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 12 | SW 11 | SW 11 | SW 14 | SW 11 | SW 14 | SW 14 | SW 14 | SSW 6 | SW 6 | SSW 6 | SW 6 | WNW 3 | — | SSW 6 | SW 8 | WNW 4 | WNW 4 | NW 4 | SW 13 | — | — | S 16 |
 kJ | 23 | 23 | 19 | 5 | 8 | 4 | 8 | 8 | 8 | 55 | 32 | 22 | 18 | 1 | — | 16 | 97 | 6 | 1 | 1 | 6 | — | — | 5 |
Swell 2 Height (m) Direction Period (s) | — | — | SW 14 | SW 14 | SW 11 | SW 14 | SW 10 | SW 10 | W 10 | SW 13 | SW 13 | SW 13 | — | N 3 | SW 13 | SW 9 | — | — | WNW 4 | — | — | — | — | — |
| kJ | — | — | 8 | 8 | 5 | 8 | 4 | 4 | 2 | 7 | 7 | 7 | — | 1 | 7 | 12 | — | — | 1 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | SW 13 | SW 13 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 7 | 7 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSW 5 | SSW 5 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | SW 6 | — | NW 3 | NW 4 | SSW 6 | SW 6 | WSW 3 | SW 4 | SW 7 | SSW 4 | SSW 5 | SSW 6 | SSW 6 | SW 7 | SW 7 |
| kJ | 83 | 95 | 145 | 134 | 107 | 156 | 144 | 127 | 87 | 44 | — | 3 | 3 | 27 | 40 | 5 | 21 | 65 | 31 | 123 | 209 | 286 | 761 | 529 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 105 | 226 | 226 | 198 | 226 | 270 | 118 | 258 | 173 | 44 | 44 | 44 | 44 | 283 | 44 | 167 | 44 | 89 | 226 | 259 | 256 | 243 | 243 | 259 |
Best forecast wave conditions in Anglesy | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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