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 03 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
17.1°C
1.5° 

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 (1.3m), 6s period with SW swell.
  • Evening surf: Evening surf (03 Sep, local time) - 5.5ft (1.7m), 6s period with SW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 4AM is: 1.5m 7s primary swell from a Southwest direction and 0.1m 15s secondary swell from a Southwest direction (forecast issued at 12:00am 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 (1.3m)6s
Evening (03 Sep)5.5ft (1.7m)6s

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


Short Range Forecast

Moderate rain (total 17mm), heaviest on Thu night. Very mild (max 18°C on Wed night, min 14°C on Thu night). Winds decreasing (fresh winds from the WSW on Fri morning, light winds from the WSW by Sat morning).

Thursday
3
Friday
4
Saturday
5
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
1
1
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)
1.8
SW
7
1.5
SW
7
1.4
SW
7
1.3
SW
7
1.1
SW
7
1.4
SW
5
1.6
SW
6
1.7
SW
7
1.4
SW
7
1.2
SW
6
1.3
WSW
4
1.6
WSW
5
1.5
WSW
5
1.4
SW
5
1.3
WSW
5
1.2
WSW
5
1
WNW
5
1
NW
5
0.6
SW
6
0.7
NW
5
0.5
SW
6
0.6
SSW
3
0.6
SSW
4
0.7
SSW
4
Wave Graph
Metric surfscale
Energy kJ
279
195
181
147
118
106
190
255
178
109
67
123
133
102
80
69
46
47
31
21
17
7
9
13
Wind (km/h)
30
SW
30
WSW
25
SW
25
SW
30
SW
30
SSW
15
WSW
15
W
15
SW
25
W
30
W
35
WSW
35
WSW
30
WSW
30
W
30
W
30
WNW
20
WNW
15
W
10
WSW
15
SW
20
SSW
20
S
15
SSE
Wind State
on
on
on
on
on
on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
cross-on
cross-on
High Tide
1:22AM3.82m
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
cloud
part cloud
part cloud
part cloud
light rain
light rain
mod rain
light rain
cloud
cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
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
1
2
9
5
Temp °C
18
16
16
17
17
17
16
14
15
16
15
14
15
17
17
16
14
14
14
14
14
14
14
14
Feels °C
14
12
12
14
13
13
15
13
14
12
9
7
8
11
11
11
9
11
12
12
12
10
10
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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