Cable Bay (Porth Trecastell) Surf Break

Lat Long: 53.22° N 4.51° W

Cable Bay (Porth Trecastell) 48 hour detailed Surf Forecast

Issued: 6 am 03 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
17.2°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 (03 Sep):

  • Morning surf: Morning surf (03 Sep, local time) - 4.5ft (1.3m), 7s period with SW swell.
  • Afternoon surf: Afternoon surf (03 Sep, local time) - 4.5ft (1.4m), 6s period with SW swell.
  • Evening surf: Evening surf (03 Sep, local time) - 4.5ft (1.3m), 6s period with SSW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 12PM is: 1.2m 7s primary swell from a Southwest direction and 0.1m 14s secondary swell from a Southwest direction (forecast issued at 06:00am September 03). The wind direction is predicted to be onshore.

Time (BST) & DateWave HeightWave Period
Morning (03 Sep)4.5ft (1.3m)7s
Afternoon (03 Sep)4.5ft (1.4m)6s
Evening (03 Sep)4.5ft (1.3m)6s

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


Short Range Forecast

Moderate rain (total 15mm), heaviest on Thu night. Very mild (max 18°C on Thu morning, min 14°C on Thu night). Mainly fresh winds.

Thursday
3
Friday
4
Saturday
5
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
1
1
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)
1.5
SW
7
1.4
SW
7
1.3
SW
7
1.2
SW
7
1.4
SW
6
1.7
SW
6
1.3
SSW
6
1.3
SSW
7
1.2
SW
6
1.3
WSW
4
1.7
WSW
5
1.6
WSW
6
1.4
SW
5
1.3
WSW
5
1.2
WSW
5
1.1
WNW
5
0.9
WNW
5
0.7
SW
6
0.6
SW
6
0.6
SW
6
0.6
SW
3
0.7
SW
4
0.9
SSW
4
Wave Graph
Metric surfscale
Energy kJ
195
181
147
128
123
226
141
145
113
67
149
155
110
83
72
54
36
36
23
27
9
16
28
Wind (km/h)
25
WSW
25
SW
25
SW
30
SW
30
SSW
20
W
5
SW
10
SSW
25
WSW
30
W
35
WSW
35
WSW
35
WSW
30
WSW
30
W
30
WNW
25
WNW
15
WNW
15
WSW
20
SW
25
SSW
20
SSW
20
S
Wind State
on
on
on
on
on
cross-on
on
cross-on
on
cross-on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
on
cross-on
cross-on
High Tide
1:47PM3.51m
2:14AM3.50m
2:44PM3.26m
3:24AM3.18m
4:06PM3.08m
Low Tide
8:28AM0.72m
8:50PM0.88m
9:25AM1.02m
9:57PM1.11m
10:40AM1.25m
cloud
part cloud
part cloud
part cloud
cloud
light rain
mod rain
light rain
light rain
light rain
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:30
6:31
6:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:02
8:00
7:59
 mm
2
6
5
1
1
Temp °C
17
16
18
17
17
16
14
14
16
15
14
15
16
17
16
14
14
14
14
14
14
14
14
Feels °C
14
12
14
13
13
14
14
13
13
10
7
9
9
11
10
8
10
11
12
11
10
10
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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