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 07 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
17.1°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 (07 Sep):

  • Morning surf: Morning surf (07 Sep, local time) - 1ft (0.3m), 14s period with SW swell.
  • Afternoon surf: Afternoon surf (07 Sep, local time) - 4ft (1.2m), 5s period with SW swell.
  • Evening surf: Evening surf (07 Sep, local time) - 5ft (1.6m), 7s period with SW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 7PM is: 1.8m 6s primary swell from a Southwest direction (forecast issued at 12:00pm September 07). The wind direction is predicted to be onshore.

Time (BST) & DateWave HeightWave Period
Morning (07 Sep)1ft (0.3m)14s
Afternoon (07 Sep)4ft (1.2m)5s
Evening (07 Sep)5ft (1.6m)7s

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


Short Range Forecast

Light rain (total 6mm), mostly falling on Mon afternoon. Very mild (max 16°C on Mon morning, min 13°C on Mon night). Winds decreasing (strong winds from the SW on Mon afternoon, light winds from the WSW by Wed afternoon).

Mon
7
Tuesday
8
Wednesday
9
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)
0.3
SW
14
1
SW
4
1.4
SW
5
1.8
SW
6
1.6
SW
7
1.6
SW
7
1.4
SW
7
1.4
WSW
5
1.5
W
5
1.4
W
5
1.4
WNW
5
1.2
WNW
5
0.4
SW
6
0.4
SW
6
0.4
SW
6
0.3
SW
6
0.4
SW
8
0.4
SW
8
0.4
SW
7
0.4
SW
7
0.7
SW
4
Wave Graph
Metric surfscale
Energy kJ
33
40
91
256
237
219
183
93
115
110
109
67
11
8
9
7
15
14
14
19
12
Wind (km/h)
20
SW
30
SW
35
SSW
40
SW
15
W
15
WSW
20
W
25
W
30
WNW
35
W
30
WNW
30
NW
30
NW
25
NW
25
NNW
15
NW
25
WNW
20
WNW
15
WSW
20
SSW
20
SSW
Wind State
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross-off
cross
cross
cross-on
on
on
on
High Tide
7:12PM3.41m
7:58AM3.37m
8:11PM3.77m
8:48AM3.63m
8:58PM4.11m
Low Tide
1:29PM1.03m
2:07AM0.62m
2:30PM0.70m
3:02AM0.22m
3:19PM0.38m
cloud
part cloud
part cloud
light rain
light rain
cloud
cloud
part cloud
clear
part cloud
rain showers
clear
clear
part cloud
clear
part cloud
rain showers
clear
clear
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:35
6:37
6:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:53
7:52
7:49
 mm
2
2
1
1
Temp °C
15
16
16
16
13
13
13
13
13
14
16
16
15
13
13
13
13
13
14
14
15
Feels °C
11
11
11
9
9
10
8
8
6
7
10
9
9
7
8
9
9
9
11
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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