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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 am Wednesday 27 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
12.6° C
(Which is 1.3°C warmer than normal for this time of year)| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (27 May) | 0.5ft (0.1m) | 13s |
| Afternoon (27 May) | - | - |
| Evening (27 May) | 0.5ft (0.1m) | 18s |
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 10mm), heaviest on Wed afternoon. Warm (max 23°C on Wed night, min 12°C on Thu night). Winds increasing (calm on Wed afternoon, fresh winds from the SSW by Thu night). | ||||||||||||||||||||||||
Wednesday 27 | Thursday 28 | Friday 29 | Sat 30 | |||||||||||||||||||||
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 | 1 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
S 13 | S 13 | S 13 | NE 5 | NE 5 | NE 5 | S 18 | SE 4 | SE 4 | SSE 4 | S 4 | S 4 | SSW 4 | SSW 4 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SW 5 | SW 5 | SW 5 | SSW 5 | SSW 5 | SSW 6 | |
3 | 3 | 3 | 0 | 0 | 0 | 6 | 4 | 12 | 6 | 6 | 10 | 10 | 16 | 54 | 86 | 80 | 67 | 76 | 64 | 57 | 51 | 37 | 39 | |
Wind (km/h) | ||||||||||||||||||||||||
off | cross-off | cross-off | cross-on | cross-on | glassy | cross-off | cross-off | cross-off | cross-off | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | cross-on | cross-on | cross-on | |
High Tide | 7:22AM3.51m | 7:56PM3.41m | 8:06AM3.55m | 8:33PM3.55m | 8:47AM3.60m | 9:08PM3.66m | ||||||||||||||||||
Low Tide | 2:14PM0.65m | 2:35AM0.83m | 2:58PM0.62m | 3:19AM0.69m | 3:37PM0.59m | |||||||||||||||||||
 |  | |  | |  |  | |  |  | | | | |  |  | | | | | | | | | |
 | 5:03 | — | — | — | — | — | — | — | 5:01 | — | — | — | — | — | — | — | 5:00 | — | — | — | — | — | — | 4:58 |
 | — | — | — | — | — | 9:28 | — | — | — | — | — | — | — | 9:29 | — | — | — | — | — | — | — | 9:30 | — | 9:31 |
— | — | — | — | — | 4 | 1 | — | 4 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 20 | 20 | 19 | 21 | 21 | 22 | 23 | 21 | 18 | 16 | 17 | 18 | 16 | 16 | 13 | 13 | 13 | 12 | 13 | 14 | 14 | 15 | 13 | 13 |
19 | 20 | 20 | 22 | 22 | 24 | 24 | 21 | 18 | 16 | 15 | 15 | 14 | 12 | 8 | 8 | 8 | 7 | 9 | 10 | 11 | 12 | 10 | 10 | |
Swell 1 Height (m) Direction Period (s) | N 5 | N 5 | NE 5 | NE 5 | NE 5 | NE 5 | NE 5 | NE 5 | SSE 4 | NE 5 | NE 5 | NE 4 | NE 4 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | — | SW 15 |
 kJ | 16 | 11 | 10 | 10 | 10 | 7 | 6 | 10 | 6 | 4 | 4 | 1 | 1 | 10 | 10 | 10 | 10 | 9 | 9 | 8 | 8 | 9 | — | 9 |
Swell 2 Height (m) Direction Period (s) | S 13 | S 13 | NNW 5 | N 4 | N 4 | N 4 | N 4 | N 4 | NE 5 | — | — | SW 16 | SW 16 | — | S 12 | — | — | — | — | — | — | SW 12 | SW 15 | — |
| kJ | 3 | 3 | 4 | 1 | 1 | 1 | 1 | 1 | 10 | — | — | 10 | 10 | — | 3 | — | — | — | — | — | — | 6 | 9 | — |
Swell 3 Height (m) Direction Period (s) | S 6 | — | S 13 | — | — | — | S 18 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 11 | SW 11 |
| kJ | 1 | — | 3 | — | — | — | 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 | 5 |
Wind waves Height (m) Direction Period (s) | — | NE 4 | — | — | — | — | — | SE 4 | SE 4 | SSE 4 | S 4 | S 4 | SSW 4 | SSW 4 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SW 5 | SW 5 | SW 5 | SSW 5 | SSW 5 | SSW 6 |
| kJ | — | 4 | — | — | — | — | — | 4 | 12 | 6 | 6 | 9 | 8 | 16 | 54 | 86 | 80 | 67 | 76 | 64 | 57 | 51 | 37 | 39 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 158 | 158 | 181 | 254 | 181 | 228 | 181 | 233 | 233 | 260 | 326 | 341 | 342 | 541 | 332 | 283 | 316 | 302 | 390 | 363 | 299 | 181 | 118 | 118 |
Best forecast wave conditions in Anglesy | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Ocean Swells (m)- Wind Speed (km/h)
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