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Surf Forecasts:

Cable Bay (Porth Trecastell) surfForecast / Wales – Anglesy / UK

information circle48hr Weather and Surf, issued 11 am Tuesday 10 Mar 2026 GMT
Forecast 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
8.5° C
 (Which is 1.1°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 6PM is: 3.0m 8s primary swell from a South-southwest direction (forecast issued at 11:00am March 10). The wind direction is predicted to be cross-onshore.

Time (GMT) & DateWave HeightWave Period
Morning (10 Mar)6ft (1.9m)6s
Afternoon (10 Mar)8ft (2.5m)7s
Evening (10 Mar)10ft (3.0m)8s

Table - waves today at Cable Bay (Porth Trecastell). (Swell directed towards the surf break)

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table
Tuesday
10
Wednesday
11
Thursday
12
Friday
13
9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.9
SSW
2.4
SSW
2.5
SSW
3
SSW
3
SSW
2.3
SW
2.3
SW
2.5
WSW
2.4
WSW
2
WSW
1.7
WSW
1.7
SW
2.2
SW
3
SW
4
SW
4
SW
4.5
SW
3.5
SW
3
SW
2.5
SW
2.3
SW
2.2
SW
2.4
WSW
2.5
WSW
Period(s) (?)6778887766666889109996667
Wave
Graph
(?)Metric surfscale
Energy kJ (?)26053075293210476225145704683101911853661033206126173681199913311055455372424536
Wind
(km/h)
40
S
45
S
45
S
50
S
45
SSW
40
WSW
40
WSW
40
W
40
W
30
W
30
SW
35
SW
45
SW
55
SSW
60
SSW
60
SSW
65
SSW
60
SW
40
W
30
WSW
35
SSW
40
W
45
WSW
40
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		oncross-
on		cross-
on		cross-
on		onononononcross-
on		ononcross-
on		ononcross-
on		cross-
on		on
High Tide
/ height (m)
1:21PM
3.10
1:42AM
2.97
2:22PM
2.78
3:02AM
2.73
4:15PM
2.61
5:06AM
2.73
Low Tide
/ height (m)
7:38AM
1.13
8:00PM
1.37
8:28AM
1.43
8:59PM
1.63
9:51AM
1.64
10:39PM
1.73
Tuesday
10
Wednesday
11
Thursday
12
Friday
13
Sunrise6:45-------6:43-------6:41-------
Sunset---6:10-------6:13-------6:15----
cloud
light rain
cloud
cloud
light rain
rain showers
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
cloud
cloud
light rain
cloud
light rain
cloud
light rain
rain showers
light rain
light rain
Rain (mm)
-1--31----------1-2-2711
Temp. °C889910977789988991111988644
Feels °C (?)0-2-1-110-2-2-2011-2-4-3-3-2-1111-3-7-6
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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View detailed surf forecast for Cable Bay (Porth Trecastell) at:
surf-forecast.com

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