Cable Bay (Porth Trecastell) Surf Break

Cable Bay (Porth Trecastell) 48 hour detailed Surf Forecast

Lat Long: 53.22° N 4.51° W

Issued: 12 pm 21 Jun 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
14.1° C

Slightly warmer than usual

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 (21 Jun):

  • Morning surf: Morning surf (21 Jun, local time) - 1.5ft (0.4m), 7s period with SW swell.
  • Afternoon surf: Afternoon surf (21 Jun, local time) - 1ft (0.3m), 7s period with SW swell.
  • Evening surf: Evening surf (21 Jun, local time) - 0.5ft (0.2m), 7s period with SSW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 4PM is: 0.3m 7s primary swell from a Southwest direction (forecast issued at 12:00pm June 21). An open ocean swell of 0.3m 3s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (BST) & DateWave HeightWave Period
Morning (21 Jun)1.5ft (0.4m)7s
Afternoon (21 Jun)1ft (0.3m)7s
Evening (21 Jun)0.5ft (0.2m)7s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 2mm), mostly falling on Mon night. Warm (max 24°C on Mon afternoon, min 16°C on Sun morning). Wind will be generally light.

Sun
21
Monday
22
Tuesday
23
Wed
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
1 AM
4 AM
7 AM
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)
0.4
SW
7
0.4
SW
7
0.3
SW
7
0.3
SW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.1
SW
6
0.1
SW
6
0.1
SW
6
0.1
SW
6
0.1
SW
6
0.1
SW
6
0.1
SW
6
0.1
SW
6
0.1
SW
6
0.1
SW
6
0.1
SW
6
0.1
SW
6
0.1
SW
6
0.1
SW
7
0.1
SW
7
0.1
SW
7
0.1
SW
7
Wave Graph
Metric surfscale
Energy kJ
12
12
7
7
4
4
4
2
2
2
2
2
2
2
2
2
2
2
1
1
2
2
2
2
Wind (km/h)
15
NE
15
NE
15
NNE
15
NNE
15
NE
15
NE
5
ENE
5
SSW
5
W
5
NNW
5
NW
10
N
10
NE
10
NNE
10
NE
10
NE
10
N
10
N
15
NNW
10
NNE
10
NE
10
NE
15
NE
15
NE
Wind State
off
off
off
off
off
off
glassy
glassy
glassy
cross-off
glassy
cross-off
off
cross-off
off
off
cross-off
cross-off
cross-off
off
off
off
off
off
High Tide
3:24PM3.23m
3:38AM3.64m
4:29PM3.13m
4:42AM3.44m
5:31PM3.11m
5:45AM3.31m
Low Tide
9:34AM0.44m
9:47PM0.93m
10:32AM0.69m
10:49PM1.12m
11:34AM0.89m
11:58PM1.21m
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
rain showers
rain showers
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:50
4:50
4:50
4:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:49
9:49
9:49
9:49
 mm
1
1
Temp °C
16
18
18
17
18
18
19
19
20
22
23
24
23
23
21
21
22
24
23
22
21
21
20
19
Feels °C
13
15
15
14
15
16
19
20
21
23
25
26
24
24
22
22
23
26
24
22
21
21
20
18
Swell 1
Height (m)
Direction
Period (s)
0.4
SW
7
0.4
SW
7
0.3
SW
7
0.3
SW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
N
3
0.2
N
3
0.1
SW
6
0.1
SW
6
0.1
SW
6
0.1
SW
6
0.1
SW
6
0.1
SW
6
0.1
SW
6
0.1
SW
6
0.1
SW
6
0.1
SW
6
0.1
SW
6
0.1
SW
7
0.1
SW
7
0.1
SW
7
0.1
SW
7
Energy kJ
12
12
7
7
4
4
4
1
1
2
2
2
2
2
2
2
2
2
1
1
2
2
2
2
Swell 2
Height (m)
Direction
Period (s)
0.2
NNW
3
0.1
SW
6
0.1
SW
6
0.1
NE
4
Energy kJ
1
2
2
1
Swell 3
Height (m)
Direction
Period (s)
0.1
NE
4
Energy kJ
1
Wind waves
Height (m)
Direction
Period (s)
0.3
NE
2
0.3
NNE
3
0.4
NNE
3
0.4
NNE
3
0.3
NNE
3
0.2
NNE
3
0.2
NNE
4
0.2
NNE
2
0.2
NNE
2
0.3
NNE
3
Energy kJ
1
1
3
3
2
1
1
1
1
1
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
158
296
297
296
259
259
259
297
297
297
298
298
297
297
313
297
317
363
597
609
352
352
558
576
Best forecast wave conditions in Anglesy
Rating
(10 max)
Best forecast wave conditions in United Kingdom
Rating
(10 max)
1
1
1
2
2
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
Header Global
Rating
(10 max)
8
8
7
7
7
6
6
5
7
6
6
5
5
5
5
5
5
5
5
5
7
8
9
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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