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 05 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
17.3°C
1.8° 

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 (05 Sep):

  • Morning surf: Morning surf (05 Sep, local time) - 3.5ft (1.0m), 5s period with W swell.
  • Afternoon surf: Afternoon surf (05 Sep, local time) - 2ft (0.6m), 6s period with SW swell.
  • Evening surf: Evening surf (05 Sep, local time) - 2.5ft (0.8m), 4s period with SW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 5AM is: 1.2m 5s primary swell from a West-northwest direction and 0.8m 6s secondary swell from a Southwest direction, 0.1m 14s secondary swell from a Southwest direction (forecast issued at 12:00am September 05). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (05 Sep)3.5ft (1.0m)5s
Afternoon (05 Sep)2ft (0.6m)6s
Evening (05 Sep)2.5ft (0.8m)4s

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


Short Range Forecast

Light rain (total 5mm), mostly falling on Mon afternoon. Very mild (max 19°C on Sun morning, min 14°C on Fri night). Winds increasing (light winds from the WSW on Sat morning, strong winds from the SW by Mon afternoon).

Saturday
5
Sunday
6
Monday
7
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)
1.5
W
5
1.2
WNW
5
1.2
W
5
1
W
5
0.7
SW
4
0.6
SW
6
0.8
SW
4
0.7
SW
4
1
SSW
4
1.2
SSW
5
1.3
SSW
5
1.3
SSW
5
1.4
SSW
5
1.4
SSW
6
1.6
SW
6
1.5
SSW
6
1.4
SW
6
0.9
SSW
6
0.9
WSW
6
0.4
SW
14
1.6
SW
5
1.5
SW
6
1.4
SW
6
1.6
SW
7
Wave Graph
Metric surfscale
Energy kJ
120
74
74
48
18
26
17
18
37
69
86
85
98
122
176
164
142
57
53
52
138
141
147
240
Wind (km/h)
30
W
25
WNW
20
W
15
WSW
15
SW
20
SSW
20
SSW
20
S
30
S
30
S
30
S
30
S
35
S
35
SSW
30
SSW
30
SSW
20
W
20
W
20
WSW
25
SW
30
SW
40
SW
30
WSW
30
WSW
Wind State
cross-on
cross-on
cross-on
cross-on
on
on
cross-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
on
on
on
cross-on
High Tide
3:24AM3.18m
4:06PM3.08m
5:04AM3.02m
5:48PM3.13m
6:46AM3.12m
7:12PM3.41m
Low Tide
10:40AM1.25m
11:26PM1.19m
12:11PM1.26m
00:57AM0.99m
1:29PM1.03m
clear
part cloud
part cloud
clear
clear
part cloud
cloud
part cloud
cloud
cloud
light rain
cloud
cloud
part cloud
part cloud
part cloud
light rain
cloud
cloud
cloud
cloud
light rain
light rain
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:33
6:35
6:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:59
7:55
7:53
 mm
1
1
1
2
Temp °C
14
14
14
14
14
14
15
15
15
15
14
15
19
19
18
17
16
15
15
14
15
16
16
15
Feels °C
8
9
10
11
11
10
11
11
10
10
9
10
12
13
14
14
14
11
12
9
9
9
10
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
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