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 14 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 (14 Sep):

  • Morning surf: Morning surf (14 Sep, local time) - 2.5ft (0.7m), 5s period with SSW swell.
  • Afternoon surf: Afternoon surf (14 Sep, local time) - 3.5ft (1.1m), 5s period with SSW swell.
  • Evening surf: Evening surf (14 Sep, local time) - 6ft (1.9m), 6s period with SSW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 7PM is: 1.7m 6s primary swell from a South-southwest direction (forecast issued at 12:00pm September 14). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (14 Sep)2.5ft (0.7m)5s
Afternoon (14 Sep)3.5ft (1.1m)5s
Evening (14 Sep)6ft (1.9m)6s

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


Short Range Forecast

Moderate rain (total 11mm), heaviest on Mon night. Very mild (max 17°C on Mon afternoon, min 13°C on Tue night). Winds decreasing (fresh winds from the SSW on Mon night, light winds from the SSW by Wed afternoon).

Mon
14
Tuesday
15
Wednesday
16
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
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)
0.7
SSW
5
0.9
SSW
4
1.3
SSW
5
1.7
SSW
6
2
SSW
6
2
SW
6
1.5
SW
6
1.4
SW
6
1.5
WSW
5
1.3
WSW
5
1.2
WSW
5
0.9
NW
5
0.6
SW
6
1.3
NW
5
1.4
NW
5
0.3
SW
6
1.4
NW
6
1.1
NW
5
0.3
SW
5
0.5
W
4
0.6
W
4
Wave Graph
Metric surfscale
Energy kJ
22
29
83
184
309
311
172
135
112
94
78
40
30
83
106
5
119
65
4
7
9
Wind (km/h)
20
SSW
30
SSW
35
S
30
S
35
SSW
40
SSW
25
WSW
20
WSW
30
W
30
W
25
WNW
25
WNW
25
NW
30
NW
30
NW
25
NW
30
NW
20
WNW
20
W
15
SSW
25
WSW
Wind State
cross-on
on
cross-on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross
cross
cross
cross
cross-on
cross-on
on
High Tide
11:50AM4.02m
00:07AM4.16m
12:24PM3.85m
00:44AM3.84m
1:00PM3.60m
Low Tide
6:35PM0.19m
6:58AM0.30m
7:12PM0.44m
7:33AM0.66m
7:49PM0.75m
part cloud
cloud
part cloud
part cloud
light rain
light rain
rain showers
clear
part cloud
cloud
rain showers
rain showers
clear
clear
cloud
cloud
part cloud
cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:48
6:50
6:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:37
7:35
7:31
 mm
1
4
1
1
2
Temp °C
16
16
17
17
17
17
16
15
14
15
15
16
15
13
13
14
13
13
14
15
15
Feels °C
15
12
12
13
13
12
13
12
8
9
10
12
11
7
7
9
8
9
10
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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