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 15 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
16.9°C
1.6° 

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 (15 Sep):

  • Morning surf: Morning surf (15 Sep, local time) - 4.5ft (1.4m), 5s period with WSW swell.
  • Afternoon surf: Afternoon surf (15 Sep, local time) - 4.5ft (1.3m), 5s period with W swell.
  • Evening surf: Evening surf (15 Sep, local time) - 3ft (0.9m), 5s period with NW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 8AM is: 1.4m 6s primary swell from a Southwest direction (forecast issued at 12:00am September 15). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (15 Sep)4.5ft (1.4m)5s
Afternoon (15 Sep)4.5ft (1.3m)5s
Evening (15 Sep)3ft (0.9m)5s

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


Short Range Forecast

Moderate rain (total 14mm), heaviest on Mon night. Very mild (max 17°C on Mon night, min 13°C on Tue night). Mainly strong winds.

Tuesday
15
Wednesday
16
Thursday
17
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)
2
SSW
6
1.7
SW
6
1.4
SW
6
1.4
WSW
5
1.4
WSW
5
1.2
W
5
0.9
WNW
5
0.8
NW
5
0.5
SW
6
0.4
SW
6
1.4
NW
5
1.3
NW
5
1.2
NW
5
0.7
W
4
0.6
WSW
4
0.9
SW
4
1.4
SW
5
1.5
SW
6
1.5
SW
6
1.6
WSW
5
1.5
W
5
1.5
W
5
1.5
W
5
1.5
W
5
Wave Graph
Metric surfscale
Energy kJ
309
231
157
111
105
75
39
30
17
9
110
100
74
19
11
23
102
141
170
128
121
120
124
124
Wind (km/h)
40
SSW
25
W
20
W
25
W
30
W
25
WNW
25
WNW
25
NW
30
NW
30
NW
30
WNW
30
WNW
25
WNW
25
W
30
SW
30
SW
35
SW
35
WSW
30
W
30
W
30
W
30
W
30
W
35
WNW
Wind State
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross
cross
cross
cross
cross-on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
00:07AM4.16m
12:24PM3.85m
00:44AM3.84m
1:00PM3.60m
1:24AM3.48m
1:40PM3.31m
Low Tide
6:58AM0.30m
7:12PM0.44m
7:33AM0.66m
7:49PM0.75m
8:09AM1.03m
8:30PM1.08m
light rain
rain showers
clear
clear
part cloud
rain showers
rain showers
rain showers
clear
cloud
cloud
cloud
part cloud
clear
cloud
cloud
light rain
light rain
clear
part cloud
cloud
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:50
6:52
6:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:35
7:31
7:30
 mm
3
4
1
1
1
3
1
Temp °C
17
17
15
14
15
15
16
15
14
13
14
14
14
15
15
15
14
15
14
14
14
15
15
14
Feels °C
12
14
12
9
10
10
12
11
9
7
8
9
9
10
9
9
8
10
8
8
7
9
9
7
  • 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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