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 30 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
17.8°C
2.1° 

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 (30 Aug):

  • Morning surf: Morning surf (30 Aug, local time) - 2.5ft (0.7m), 9s period with SW swell.
  • Afternoon surf: Afternoon surf (30 Aug, local time) - 3.5ft (1.1m), 4s period with SSW swell.
  • Evening surf: Evening surf (30 Aug, local time) - 3.5ft (1.1m), 6s period with SW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 9AM is: 0.7m 9s primary swell from a Southwest direction (forecast issued at 12:00am August 30). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (30 Aug)2.5ft (0.7m)9s
Afternoon (30 Aug)3.5ft (1.1m)4s
Evening (30 Aug)3.5ft (1.1m)6s

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


Short Range Forecast

Light rain (total 3mm), mostly falling on Sat night. Very mild (max 17°C on Sun morning, min 14°C on Sun night). Winds increasing (calm on Sat night, fresh winds from the S by Sun afternoon).

Sunday
30
Monday
31
Tuesday
1
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)
1
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)
0.9
SSW
8
0.9
SSW
9
0.7
SW
9
0.8
SSW
8
1.1
SSW
4
1.1
SSW
4
1.3
SSW
6
0.9
SSW
6
1
SW
7
0.9
SW
7
1.4
WNW
5
1.6
NW
6
1.2
NW
5
0.6
SW
8
0.6
SSW
8
0.5
SW
7
0.4
SSW
7
0.7
WSW
4
0.8
WSW
4
0.9
SW
4
0.9
SW
4
1.2
SW
5
1.4
SW
6
1.4
SW
6
Wave Graph
Metric surfscale
Energy kJ
126
135
77
92
42
46
97
53
104
79
102
148
77
50
40
27
21
11
19
22
29
67
123
128
Wind (km/h)
10
WSW
15
SSW
20
S
25
S
25
SSW
30
S
25
SSW
15
SSW
15
WSW
25
WNW
25
WNW
30
WNW
30
WNW
20
W
10
W
15
SW
10
WSW
15
SW
20
SW
25
SW
25
SW
30
SSW
30
SSW
30
SSW
Wind State
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross
cross
cross
cross
cross-on
cross-on
on
cross-on
on
on
on
on
on
on
cross-on
High Tide
11:00PM4.28m
11:19AM3.92m
11:30PM4.30m
11:49AM3.93m
00:03AM4.23m
12:23PM3.87m
Low Tide
5:52AM0.00m
6:01PM0.20m
6:27AM0.05m
6:37PM0.27m
7:03AM0.19m
7:16PM0.42m
rain showers
clear
clear
cloud
thunderstorm
thunderstorm
part cloud
cloud
part cloud
clear
part cloud
part cloud
part cloud
cloud
part cloud
clear
clear
part cloud
clear
clear
part cloud
part cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:22
6:24
6:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:13
8:09
8:07
 mm
1
1
1
Temp °C
15
15
15
16
17
16
16
16
15
15
14
15
15
16
16
16
16
15
15
15
15
16
16
16
Feels °C
15
13
13
12
13
11
12
14
13
11
10
10
9
12
13
13
14
12
12
11
11
11
11
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.


Nearest locationNearest