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 22 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
16.6°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 (22 Sep):

  • Morning surf: Morning surf (22 Sep, local time) - 2ft (0.6m), 4s period with SSW swell.
  • Afternoon surf: Afternoon surf (22 Sep, local time) - 1.5ft (0.4m), 4s period with SSW swell.
  • Evening surf: Evening surf (22 Sep, local time) - 0.5ft (0.1m), 12s period with SW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 8PM is: 0.1m 12s primary swell from a South direction and 0.1m 5s secondary swell from a West direction, 0.4m 3s secondary swell from a Southwest direction (forecast issued at 12:00pm September 22). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (22 Sep)2ft (0.6m)4s
Afternoon (22 Sep)1.5ft (0.4m)4s
Evening (22 Sep)0.5ft (0.1m)12s

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


Short Range Forecast

Light rain (total 2mm), mostly falling on Tue night. Very mild (max 18°C on Tue night, min 12°C on Wed night). Winds increasing (light winds from the NE on Wed afternoon, fresh winds from the S by Thu morning).

Tue
22
Wednesday
23
Thursday
24
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)
0.6
SSW
4
0.4
SSW
4
0.1
S
12
0.1
S
12
0.1
SW
12
0.6
SW
4
0.6
WSW
4
0.6
W
4
0.1
SW
15
0.1
W
14
0.1
SW
12
0.1
SW
12
0.1
SW
4
0.1
SW
4
0.2
N
4
0.4
SSE
3
0.9
S
4
1.2
SSW
5
1.2
SSW
5
1.2
SSW
5
0.9
SSW
5
Wave Graph
Metric surfscale
Energy kJ
10
5
5
3
6
12
10
9
8
4
6
6
1
1
0
3
26
69
70
69
44
Wind (km/h)
20
S
20
S
15
SSW
15
S
15
S
20
S
15
SW
25
NW
20
NNW
25
NNW
20
N
5
NE
10
ENE
10
E
10
SE
15
SSE
25
S
30
S
30
SSW
30
SSW
25
SSW
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross
cross-off
cross-off
cross-off
off
off
cross-off
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
7:45AM2.94m
7:57PM3.28m
8:24AM3.18m
8:32PM3.56m
8:55AM3.43m
9:01PM3.83m
Low Tide
1:57PM1.28m
2:29AM0.97m
2:38PM0.99m
3:05AM0.65m
3:14PM0.70m
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
light rain
rain showers
clear
clear
part cloud
clear
part cloud
cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:01
7:03
7:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:17
7:15
7:13
 mm
1
1
Temp °C
16
16
17
17
17
17
18
15
13
13
14
13
13
13
12
12
13
14
16
16
16
Feels °C
14
14
16
16
16
15
15
12
9
8
10
12
12
11
9
8
8
8
11
12
13
  • 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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