Cable Bay (Porth Trecastell) Surf Break

Lat Long: 53.22° N 4.51° W

Cable Bay (Porth Trecastell) 48 hour detailed Surf Forecast

Issued: 12 am 19 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
16.7°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 (19 Sep):

  • Morning surf: Morning surf (19 Sep, local time) - 7ft (2.1m), 7s period with SW swell.
  • Afternoon surf: Afternoon surf (19 Sep, local time) - 5ft (1.5m), 7s period with SW swell.
  • Evening surf: Evening surf (19 Sep, local time) - 4ft (1.2m), 4s period with WSW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 6AM is: 2.5m 7s primary swell from a Southwest direction (forecast issued at 12:00am September 19). The wind direction is predicted to be onshore.

Time (BST) & DateWave HeightWave Period
Morning (19 Sep)7ft (2.1m)7s
Afternoon (19 Sep)5ft (1.5m)7s
Evening (19 Sep)4ft (1.2m)4s

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


Short Range Forecast

Mostly dry. Very mild (max 17°C on Sat afternoon, min 12°C on Sat night). Winds decreasing (strong winds from the SW on Fri night, light winds from the SSW by Sun afternoon).

Saturday
19
Sunday
20
Monday
21
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
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
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.5
SW
7
2.5
SW
7
2.3
SW
7
1.9
SW
7
1.6
SW
7
1.5
SW
7
1.3
SW
7
1.2
WSW
4
1.4
W
5
1.3
WNW
5
1.3
WNW
5
1.2
NW
5
1
NW
5
0.7
WNW
5
0.5
SW
6
0.5
SW
6
0.7
SW
4
0.9
SW
4
1.1
SW
5
1
SW
5
0.9
SW
5
0.8
SSW
4
0.8
SSW
4
0.7
SW
4
Wave Graph
Metric surfscale
Energy kJ
662
698
589
381
262
212
153
53
94
86
90
79
51
19
18
16
15
26
49
43
31
24
22
20
Wind (km/h)
40
SW
40
SW
40
SW
35
WSW
30
WSW
25
WSW
25
W
30
W
30
W
30
WNW
30
WNW
25
WNW
20
W
15
WSW
15
SSW
20
S
20
SSW
30
S
30
S
30
SSW
25
SSW
25
S
20
S
20
S
Wind State
on
on
on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
3:16AM2.79m
3:54PM2.78m
5:10AM2.63m
5:52PM2.79m
6:48AM2.73m
7:09PM3.00m
Low Tide
9:52AM1.62m
10:46PM1.58m
11:27AM1.71m
00:33AM1.54m
1:01PM1.56m
part cloud
cloud
cloud
part cloud
part cloud
cloud
cloud
clear
clear
clear
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:56
6:58
7:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:24
7:22
7:20
 mm
Temp °C
16
16
16
16
16
17
16
15
14
13
12
12
13
14
13
13
13
14
14
15
16
16
16
16
Feels °C
10
10
10
10
10
12
12
9
8
7
6
7
9
11
10
9
9
9
9
11
13
13
14
14
  • 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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