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 pm 04 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
17.3°C
1.8° 

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 (04 Sep):

  • Morning surf: Morning surf (04 Sep, local time) - 6ft (1.8m), 5s period with WSW swell.
  • Afternoon surf: Afternoon surf (04 Sep, local time) - 5ft (1.5m), 6s period with WSW swell.
  • Evening surf: Evening surf (04 Sep, local time) - 4.5ft (1.4m), 5s period with WSW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 4PM is: 1.4m 6s primary swell from a West-southwest direction and 0.1m 14s secondary swell from a Southwest direction (forecast issued at 12:00pm September 04). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (04 Sep)6ft (1.8m)5s
Afternoon (04 Sep)5ft (1.5m)6s
Evening (04 Sep)4.5ft (1.4m)5s

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


Short Range Forecast

Light rain (total 5mm), mostly falling on Sat night. Very mild (max 19°C on Sun afternoon, min 13°C on Fri night). Mainly fresh winds.

Fri
4
Saturday
5
Sunday
6
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.8
WSW
5
1.7
WSW
6
1.4
WSW
6
1.3
WSW
5
1.4
WSW
5
1.5
W
5
1.4
W
5
1.2
W
5
1
W
5
0.6
SW
5
0.6
SW
6
0.8
SSW
4
0.8
SSW
4
1.1
SSW
4
1.4
SSW
5
1.4
SSW
6
1.4
SSW
6
1.5
SSW
6
1.6
SSW
6
1.7
SSW
6
1.6
SSW
6
Wave Graph
Metric surfscale
Energy kJ
176
194
119
80
91
117
104
77
47
15
26
19
24
44
105
122
122
143
156
202
190
Wind (km/h)
35
WSW
30
WSW
30
WSW
30
W
35
W
30
W
30
WNW
20
W
20
WSW
15
SW
20
SW
25
SSW
20
S
30
S
30
S
30
S
30
S
35
S
35
SSW
35
SSW
30
SSW
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
2:44PM3.26m
3:24AM3.18m
4:06PM3.08m
5:04AM3.02m
5:48PM3.13m
Low Tide
9:25AM1.02m
9:57PM1.11m
10:40AM1.25m
11:26PM1.19m
12:11PM1.26m
part cloud
cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
cloud
light rain
light rain
part cloud
part cloud
cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:31
6:33
6:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:00
7:59
7:55
 mm
1
4
Temp °C
15
16
17
17
16
14
13
13
14
14
14
15
15
15
14
14
16
18
19
18
17
Feels °C
9
10
12
11
10
8
7
9
11
11
10
11
11
10
9
9
11
11
13
14
13
  • 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.


Nearest locationNearest