Cable Bay (Porth Trecastell) Surf Break

Lat Long: 53.22° N 4.51° W

Cable Bay (Porth Trecastell) 48 hour detailed Surf Forecast

Issued: 6 pm 30 Jul 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
16.9° C
1.6° 

Cable Bay (Porth Trecastell) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Cable Bay (Porth Trecastell) today (31 Jul):

  • Afternoon surf: Afternoon surf (31 Jul, local time) - 2ft (0.6m), 4s period with WNW swell.
  • Evening surf: Evening surf (31 Jul, local time) - 1.5ft (0.4m), 3s period with SW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 12AM is: 0.4m 3s primary swell from a West-southwest direction (forecast issued at 06:00pm July 30). The wind direction is predicted to be onshore.

Time (BST) & DateWave HeightWave Period
Morning (31 Jul)--
Afternoon (31 Jul)2ft (0.6m)4s
Evening (31 Jul)1.5ft (0.4m)3s

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


Short Range Forecast

Mostly dry. Very mild (max 18°C on Sun morning, min 13°C on Thu night). Wind will be generally light.

Thu
30
Friday
31
Saturday
1
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
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
NW
4
0.3
WSW
3
0.4
SW
3
0.4
WSW
3
0.5
WNW
3
0.5
WNW
4
0.5
W
4
0.5
W
4
0.4
SW
3
0.6
SW
4
0.6
SSW
4
0.6
SSW
5
0.7
NW
4
0.7
WNW
4
0.6
WNW
4
0.6
W
4
0.5
W
4
0.3
SW
4
0.4
SW
3
Wave Graph
Metric surfscale
Energy kJ
3
2
2
3
7
7
7
6
3
10
13
15
16
15
10
10
7
3
2
Wind (km/h)
10
NW
10
W
10
SW
10
WSW
15
WNW
15
WNW
15
W
15
WSW
20
SW
20
SW
10
NW
15
WNW
20
WNW
15
WNW
20
W
20
W
10
SW
10
SW
15
S
Wind State
cross
cross-on
on
cross-on
cross
cross-on
cross-on
on
on
on
cross
cross-on
cross
cross-on
cross-on
cross-on
on
on
cross-on
High Tide
11:01PM4.02m
11:19AM3.63m
11:31PM4.09m
11:49AM3.65m
Low Tide
5:20PM0.43m
5:48AM0.25m
5:54PM0.38m
6:22AM0.21m
6:28PM0.40m
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:31
5:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:16
9:15
9:13
 mm
Temp °C
16
16
16
16
14
13
13
14
15
17
16
15
14
13
13
13
15
15
15
Feels °C
13
13
14
14
11
10
9
11
10
13
13
12
11
10
9
9
13
13
12
  • 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
How to use the Wavefinder 

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Cable Bay (Porth Trecastell) surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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