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 18 Jul 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
17.1° C
2.2° 

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 (18 Jul):

  • Morning surf: Morning surf (18 Jul, local time) - 0.5ft (0.1m), 11s period with S swell.
  • Afternoon surf: Afternoon surf (18 Jul, local time) - 0.5ft (0.1m), 11s period with SW swell.
  • Evening surf: Evening surf (18 Jul, local time) - 0.5ft (0.1m), 11s period with S swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 6AM is: 0.1m 12s primary swell from a Southwest direction and 0.1m 6s secondary swell from a Southwest direction (forecast issued at 12:00am July 18). An open ocean swell of 0.6m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (BST) & DateWave HeightWave Period
Morning (18 Jul)0.5ft (0.1m)11s
Afternoon (18 Jul)0.5ft (0.1m)11s
Evening (18 Jul)0.5ft (0.1m)11s

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 Fri night, min 12°C on Sun night). Wind will be generally light.

Saturday
18
Sunday
19
Monday
20
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)
0.1
SW
12
0.1
SW
13
0.1
S
11
0.1
S
11
0.1
S
11
0.1
SW
11
0.1
S
11
0.1
S
11
0.1
S
11
0.1
S
11
0.1
S
11
0.1
S
11
0.1
S
11
0.1
S
10
0.3
NNW
4
0.1
S
10
0.1
S
10
0.8
N
5
0.9
N
5
0.9
NNW
5
0.9
NNW
5
0.8
NNW
5
0.7
NNW
5
0.7
N
5
Wave Graph
Metric surfscale
Energy kJ
6
6
2
2
2
5
2
2
2
2
2
2
2
2
0
2
2
0
0
0
0
0
0
0
Wind (km/h)
10
N
10
N
15
N
20
NNW
25
NNW
20
N
20
NNE
15
NE
10
NNE
10
NNE
5
N
15
NW
15
WNW
15
NNW
15
NNW
15
N
15
NNE
15
N
15
N
20
NNW
25
NNW
20
NNW
20
N
15
NNE
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
cross-off
off
cross-off
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
00:25AM4.44m
12:58PM3.76m
1:12AM4.25m
1:45PM3.57m
2:00AM3.97m
2:34PM3.37m
Low Tide
7:25AM-0.16m
7:35PM0.30m
8:10AM0.10m
8:19PM0.55m
8:56AM0.43m
9:06PM0.83m
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
part cloud
clear
part cloud
cloud
clear
clear
part cloud
cloud
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:11
5:13
5:15
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:34
9:32
9:31
 mm
Temp °C
16
13
13
13
14
17
17
16
17
16
15
15
15
16
16
16
14
13
12
13
14
16
17
16
Feels °C
14
11
11
9
9
13
14
13
15
14
14
13
12
13
13
13
12
11
10
10
10
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.


Nearest locationNearest