Cable Bay (Porth Trecastell) Surf Break

Lat Long: 53.22° N 4.51° W

Cable Bay (Porth Trecastell) 48 hour detailed Surf Forecast

Issued: 6 am 22 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
18.1°C
2.4° 

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 Aug):

  • Morning surf: Morning surf (22 Aug, local time) - 0.5ft (0.1m), 16s period with SW swell.
  • Afternoon surf: Afternoon surf (22 Aug, local time) - 0.5ft (0.1m), 15s period with SW swell.
  • Evening surf: Evening surf (22 Aug, local time) - 0.5ft (0.1m), 15s period with SW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 2PM is: 0.1m 15s primary swell from a Southwest direction and 0.1m 12s secondary swell from a South direction (forecast issued at 06:00am August 22). An open ocean swell of 0.6m 5s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (BST) & DateWave HeightWave Period
Morning (22 Aug)0.5ft (0.1m)16s
Afternoon (22 Aug)0.5ft (0.1m)15s
Evening (22 Aug)0.5ft (0.1m)15s

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


Short Range Forecast

Mostly dry. Warm (max 20°C on Mon afternoon, min 13°C on Sat morning). Wind will be generally light.

Saturday
22
Sunday
23
Monday
24
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
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)
0.1
SW
16
0.1
SW
16
0.1
SW
15
0.1
SW
15
0.1
SW
15
0.1
SW
15
0.1
SW
15
0.1
SW
15
0.1
SW
15
0.1
SW
14
0.1
SW
14
0.1
SW
14
0.1
SW
14
0.1
SW
13
0.1
SW
13
0.1
SW
14
0.1
SW
14
0.1
SW
14
0.1
SW
14
0.1
SW
14
0.1
SW
13
0.1
SW
13
0.1
SW
13
Wave Graph
Metric surfscale
Energy kJ
10
10
8
8
8
8
8
8
8
8
8
8
7
7
7
8
8
8
8
8
7
7
7
Wind (km/h)
15
NNW
15
NNW
10
NNW
15
NW
20
NNW
15
N
15
N
10
NNE
10
NNE
5
NNE
10
N
15
NNW
15
NNW
15
NNE
15
ENE
10
ENE
10
E
10
E
0
S
5
WNW
5
N
15
ENE
20
E
Wind State
cross-off
cross-off
cross-off
cross
cross-off
cross-off
cross-off
off
cross-off
off
cross-off
cross-off
cross-off
off
off
cross-off
cross-off
cross-off
glassy
cross
glassy
off
cross-off
High Tide
6:19PM2.84m
7:04AM2.82m
7:32PM3.02m
8:05AM2.99m
8:24PM3.28m
Low Tide
12:20PM1.61m
1:12AM1.48m
1:41PM1.46m
2:17AM1.25m
2:33PM1.20m
part cloud
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:11
6:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:30
8:29
8:27
 mm
Temp °C
13
13
13
14
14
14
14
14
13
13
14
16
17
16
15
17
17
17
18
19
20
20
19
Feels °C
11
11
11
11
10
10
11
12
11
12
13
14
15
13
12
14
14
14
17
17
18
16
14
  • 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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