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 06 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 (06 Sep):

  • Morning surf: Morning surf (06 Sep, local time) - 4.5ft (1.4m), 5s period with SSW swell.
  • Afternoon surf: Afternoon surf (06 Sep, local time) - 5ft (1.6m), 6s period with SSW swell.
  • Evening surf: Evening surf (06 Sep, local time) - 5ft (1.6m), 6s period with SSW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 5AM is: 1.3m 5s primary swell from a South-southwest direction and 0.1m 13s secondary swell from a Southwest direction (forecast issued at 12:00am September 06). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (06 Sep)4.5ft (1.4m)5s
Afternoon (06 Sep)5ft (1.6m)6s
Evening (06 Sep)5ft (1.6m)6s

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


Short Range Forecast

Light rain (total 7mm), mostly falling on Mon night. Very mild (max 19°C on Sun afternoon, min 13°C on Mon night). Winds increasing (light winds from the W on Sun night, strong winds from the WSW by Mon night).

Sunday
6
Monday
7
Tuesday
8
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)
0.9
SSW
4
1.2
SSW
5
1.4
SSW
5
1.4
SSW
6
1.5
SSW
6
1.7
SSW
6
1.7
SSW
6
1.6
SSW
6
1.4
SW
6
1.1
SW
6
0.8
SSW
6
0.3
SW
14
0.3
SW
13
1.2
SW
5
1.8
SW
6
1.6
SW
6
1.3
SW
6
1.1
SW
6
0.9
SSW
6
1.4
W
5
1.5
W
5
1.4
W
5
1.6
W
5
1.8
WNW
6
Wave Graph
Metric surfscale
Energy kJ
28
59
113
115
143
197
202
184
142
83
40
33
28
67
209
184
136
91
67
90
120
106
152
193
Wind (km/h)
25
S
30
S
30
S
30
S
40
S
35
S
30
SSW
30
SSW
25
SSW
25
WNW
15
W
20
WSW
25
SW
30
SSW
40
SSW
45
WSW
20
W
20
W
25
WSW
30
W
30
W
30
W
35
W
35
WNW
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-on
on
on
cross-on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
5:04AM3.02m
5:48PM3.13m
6:46AM3.12m
7:12PM3.41m
7:58AM3.37m
8:11PM3.77m
Low Tide
11:26PM1.19m
12:11PM1.26m
00:57AM0.99m
1:29PM1.03m
2:07AM0.62m
2:30PM0.70m
cloud
part cloud
light rain
rain showers
clear
cloud
part cloud
part cloud
cloud
cloud
part cloud
cloud
part cloud
cloud
cloud
light rain
light rain
light rain
clear
clear
clear
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:35
6:35
6:37
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:55
7:53
7:52
 mm
1
1
2
2
1
Temp °C
15
15
14
15
18
19
18
17
17
15
15
15
15
16
16
16
14
13
13
13
14
15
15
14
Feels °C
10
10
10
10
11
13
14
14
14
11
12
12
11
11
10
8
10
9
8
7
7
8
8
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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