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 25 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 (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), 3s period with SW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 6PM is: 0.1m 16s primary swell from a Southwest direction and 0.2m 3s secondary swell from a West-northwest direction, 0.4m 3s secondary swell from a Southwest direction (forecast issued at 12:00pm September 25). The wind direction is predicted to be cross-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)3s

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


Short Range Forecast

Moderate rain (total 10mm), heaviest on Sun afternoon. Very mild (max 15°C on Fri night, min 12°C on Sun night). Winds increasing (calm on Fri morning, fresh winds from the SSE by Sun morning).

Fri
25
Saturday
26
Sunday
27
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
1
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)
0.5
SW
5
0.4
SW
4
0.4
NW
4
0.1
SW
15
0.6
SW
4
0.9
SW
4
0.9
SW
4
0.9
SW
5
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
5
1.5
SSW
6
1.5
SSW
6
1.7
SSW
6
1.9
SSW
6
1.8
SW
7
1.3
SSW
7
Wave Graph
Metric surfscale
Energy kJ
10
10
10
9
11
27
29
32
44
84
115
128
114
101
117
143
130
185
263
295
142
Wind (km/h)
5
W
10
WSW
10
SSW
15
SSW
20
SSW
20
SW
20
SW
20
SW
30
SW
30
SW
30
SSW
30
SSW
25
S
25
S
30
S
30
S
35
SSE
35
SSE
30
SSE
20
W
20
NNW
Wind State
glassy
cross-on
cross-on
cross-on
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-off
High Tide
9:23AM3.66m
9:29PM4.06m
9:50AM3.87m
9:58PM4.25m
10:18AM4.03m
Low Tide
3:48PM0.45m
4:12AM0.11m
4:23PM0.24m
4:46AM-0.05m
4:58PM0.11m
cloud
cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
cloud
light rain
light rain
light rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:07
—
—
—
—
—
—
7:09
—
—
—
—
—
—
—
7:11
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
—
7:09
—
—
—
—
—
—
—
7:07
—
—
—
—
—
—
—
7:05
—
 mm
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1
3
3
3
Temp °C
13
14
14
14
15
15
14
14
14
15
15
15
15
14
14
13
14
13
13
14
13
Feels °C
12
12
12
11
11
12
10
10
9
10
10
11
11
10
9
7
7
7
7
11
9
  • 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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