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 25 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
16.8°C
1.9° 

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 (25 Sep):

  • Morning surf: Morning surf (25 Sep, local time) - 2ft (0.6m), 5s period with SSW swell.
  • Afternoon surf: Afternoon surf (25 Sep, local time) - 0.5ft (0.1m), 16s period with SW swell.
  • Evening surf: Evening surf (25 Sep, local time) - 2ft (0.6m), 4s period with SW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 3AM is: 1.1m 5s primary swell from a Southwest direction and 0.1m 19s secondary swell from a Southwest direction (forecast issued at 12:00am September 25). The wind direction is predicted to be onshore.

Time (BST) & DateWave HeightWave Period
Morning (25 Sep)2ft (0.6m)5s
Afternoon (25 Sep)0.5ft (0.1m)16s
Evening (25 Sep)2ft (0.6m)4s

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


Short Range Forecast

Moderate rain (total 13mm), heaviest on Sun afternoon. Very mild (max 17°C on Sun afternoon, min 13°C on Sat night). Winds increasing (calm on Fri afternoon, fresh winds from the S by Sun morning).

Friday
25
Saturday
26
Sunday
27
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
1
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)
1.2
SSW
5
1
SW
5
0.6
SW
5
0.5
SW
5
0.4
SW
4
0.4
NW
4
0.4
SW
5
0.7
SW
4
0.7
SW
4
0.8
SW
4
0.9
SW
4
1.1
SW
5
1.3
SW
5
1.4
SW
5
1.4
SW
6
1.4
SW
6
1.3
SSW
6
1.4
SSW
6
1.6
SSW
6
1.6
SSW
6
1.6
SSW
6
1.7
SSW
6
1.3
SSW
6
1
SSW
6
Wave Graph
Metric surfscale
Energy kJ
67
48
18
10
10
10
9
13
18
21
31
58
84
98
128
128
101
122
156
178
165
192
132
82
Wind (km/h)
25
SSW
20
SW
15
NW
10
NW
10
WNW
5
SW
15
SSW
20
SSW
20
SSW
20
SW
25
SW
30
SW
30
SSW
30
SSW
30
SSW
25
SSW
25
S
30
S
35
S
35
S
35
S
25
S
10
W
10
NNW
Wind State
cross-on
on
cross
cross-off
cross
glassy
cross-on
on
on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-off
High Tide
9:23AM3.66m
9:29PM4.06m
9:50AM3.87m
9:58PM4.25m
10:18AM4.03m
Low Tide
3:39AM0.35m
3:48PM0.45m
4:12AM0.11m
4:23PM0.24m
4:46AM-0.05m
4:58PM0.11m
cloud
cloud
light rain
cloud
cloud
cloud
cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
cloud
heavy rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
7:07
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—
—
—
—
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7:09
—
—
—
—
—
—
—
7:11
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
—
—
—
—
7:09
—
—
—
—
—
—
—
7:07
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—
—
—
—
—
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7:05
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 mm
—
—
1
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
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12
2
Temp °C
16
15
14
14
14
14
14
14
14
14
14
14
15
15
15
14
14
13
13
14
15
17
14
13
Feels °C
12
12
11
12
12
12
11
10
10
10
9
9
10
10
11
10
10
8
7
7
8
13
13
11
  • 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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