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 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):

  • Afternoon surf: Afternoon surf (19 Sep, local time) - 5ft (1.5m), 7s period with SW swell.
  • Evening surf: Evening surf (19 Sep, local time) - 4.5ft (1.4m), 5s period with WSW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 10PM is: 1.4m 5s primary swell from a West-southwest direction (forecast issued at 06:00pm September 19). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (19 Sep)--
Afternoon (19 Sep)5ft (1.5m)7s
Evening (19 Sep)4.5ft (1.4m)5s

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 Sun morning). Mainly fresh winds.

Sat
19
Sunday
20
Monday
21
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)
1.3
SW
7
1.2
SW
7
1.4
WSW
5
1.5
W
5
0.9
SW
7
1.3
WNW
5
1.2
NW
5
0.9
NW
5
0.7
NW
5
0.4
SW
6
0.5
SW
6
0.7
SW
4
0.8
SSW
4
0.9
SSW
4
0.9
SSW
4
0.8
SSW
4
0.7
SSW
4
0.7
SSW
4
0.8
SSW
4
Wave Graph
Metric surfscale
Energy kJ
169
139
80
119
74
90
79
43
23
11
16
14
21
32
35
25
16
15
20
Wind (km/h)
25
WSW
30
W
30
W
30
W
30
W
30
WNW
25
WNW
20
WNW
10
W
15
SSW
15
S
20
S
20
S
25
S
25
S
25
S
20
S
20
S
20
S
Wind State
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
3:54PM2.78m
5:10AM2.63m
5:52PM2.79m
6:48AM2.73m
7:09PM3.00m
Low Tide
10:46PM1.58m
11:27AM1.71m
00:33AM1.54m
1:01PM1.56m
cloud
part cloud
clear
clear
clear
part cloud
clear
part cloud
clear
clear
part cloud
clear
cloud
cloud
part cloud
part cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
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
17
17
15
14
13
13
12
13
13
13
13
13
13
14
14
16
16
16
16
Feels °C
13
11
9
7
6
7
7
9
10
10
10
9
8
9
10
13
14
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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