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 26 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
16.6°C
1.7° 

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 (26 Sep):

  • Morning surf: Morning surf (26 Sep, local time) - 3.5ft (1.1m), 5s period with SW swell.
  • Afternoon surf: Afternoon surf (26 Sep, local time) - 4.5ft (1.3m), 5s period with SW swell.
  • Evening surf: Evening surf (26 Sep, local time) - 4.5ft (1.4m), 6s period with SW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 9AM is: 1.1m 5s primary swell from a Southwest direction (forecast issued at 12:00am September 26). The wind direction is predicted to be onshore.

Time (BST) & DateWave HeightWave Period
Morning (26 Sep)3.5ft (1.1m)5s
Afternoon (26 Sep)4.5ft (1.3m)5s
Evening (26 Sep)4.5ft (1.4m)6s

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


Short Range Forecast

Light rain (total 9mm), mostly falling on Sun morning. Very mild (max 16°C on Sun afternoon, min 12°C on Sun morning). Winds decreasing (fresh winds from the SSE on Sun morning, calm by Sun night).

Saturday
26
Sunday
27
Monday
28
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)
0.9
SW
4
1
SW
5
1.1
SW
5
1.1
SW
5
1.2
SW
5
1.2
SW
5
1.4
SW
6
1.4
SW
6
1.4
SSW
6
1.4
SSW
5
1.4
SSW
6
1.5
S
6
1.9
S
6
2.1
SSW
7
1.4
SSW
7
1
SSW
7
0.9
SSW
7
0.8
SSW
7
0.7
SSW
7
0.6
SSW
7
0.5
SW
7
0.4
SSW
6
0.4
SSW
6
0.4
SW
6
Wave Graph
Metric surfscale
Energy kJ
34
45
60
65
74
76
110
128
114
111
114
144
261
437
208
111
81
64
41
30
21
16
16
10
Wind (km/h)
25
SW
25
SW
25
SW
30
SW
30
SSW
30
SSW
30
SSW
30
S
25
S
25
SSE
25
SSE
25
SSE
40
SSE
30
SW
30
WNW
20
WNW
15
WNW
15
WNW
5
W
5
SSE
15
SSW
10
S
10
E
15
E
Wind State
on
on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
on
cross
cross
cross
cross-on
glassy
cross-on
cross-on
cross-on
cross-off
cross-off
High Tide
9:50AM3.87m
9:58PM4.25m
10:18AM4.03m
10:29PM4.36m
10:48AM4.13m
Low Tide
4:12AM0.11m
4:23PM0.24m
4:46AM-0.05m
4:58PM0.11m
5:22AM-0.09m
5:36PM0.07m
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
cloud
cloud
light rain
light rain
rain showers
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
7:09
—
—
—
—
—
—
—
7:11
—
—
—
—
—
—
—
7:13
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
—
—
—
—
7:07
—
—
—
—
—
—
—
7:05
—
—
—
—
—
—
—
7:02
—
 mm
—
—
—
—
—
—
—
—
—
—
—
1
4
4
—
—
—
—
—
—
—
—
—
—
Temp °C
15
14
14
14
15
15
15
15
14
14
14
12
13
16
14
14
13
13
12
13
13
14
14
14
Feels °C
11
10
10
9
10
10
10
11
10
10
10
7
6
12
9
10
9
10
10
12
10
11
11
10
  • 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 

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