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 30 Jul 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
16.9° 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 (30 Jul):

  • Morning surf: Morning surf (30 Jul, local time) - 2ft (0.6m), 4s period with WNW swell.
  • Afternoon surf: Afternoon surf (30 Jul, local time) - 2ft (0.6m), 4s period with WNW swell.
  • Evening surf: Evening surf (30 Jul, local time) - 1.5ft (0.4m), 3s period with SW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 5PM is: 0.4m 4s primary swell from a Northwest direction and 0.2m 5s secondary swell from a South-southwest direction (forecast issued at 12:00pm July 30). The wind direction is predicted to be cross-shore.

Time (BST) & DateWave HeightWave Period
Morning (30 Jul)2ft (0.6m)4s
Afternoon (30 Jul)2ft (0.6m)4s
Evening (30 Jul)1.5ft (0.4m)3s

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


Short Range Forecast

Mostly dry. Very mild (max 17°C on Fri afternoon, min 13°C on Thu night). Wind will be generally light.

Thu
30
Friday
31
Saturday
1
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
WNW
4
0.6
WNW
4
0.4
NW
4
0.3
WSW
3
0.4
SW
3
0.4
WSW
3
0.5
W
3
0.5
WNW
4
0.5
W
4
0.5
W
4
0.5
SW
3
0.6
SW
4
0.8
SW
5
0.6
SW
5
0.5
SW
5
0.5
SW
5
0.4
SW
5
0.4
WNW
4
0.3
SW
5
0.4
SW
2
0.4
SW
3
Wave Graph
Metric surfscale
Energy kJ
9
9
3
2
2
3
5
7
6
6
5
12
26
19
11
12
7
5
3
1
4
Wind (km/h)
20
NW
20
WNW
10
NW
15
W
10
SW
10
W
15
WNW
15
WNW
20
W
20
WSW
25
SW
20
SW
10
W
15
WNW
20
NW
15
WNW
20
WNW
15
W
10
SSW
15
SSW
10
SSW
Wind State
cross
cross
cross
cross-on
on
cross-on
cross
cross-on
cross-on
on
on
on
cross-on
cross-on
cross
cross-on
cross-on
cross-on
on
on
cross-on
High Tide
10:49AM3.58m
11:01PM4.02m
11:19AM3.63m
11:31PM4.09m
11:49AM3.65m
Low Tide
5:20PM0.43m
5:48AM0.25m
5:54PM0.38m
6:22AM0.21m
6:28PM0.40m
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:30
5:31
5:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:16
9:15
9:13
 mm
Temp °C
14
15
16
16
16
16
14
13
14
14
15
17
17
15
14
13
13
14
15
15
15
Feels °C
10
12
13
13
14
14
11
10
10
10
10
13
14
12
11
10
10
11
13
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
How to use the Wavefinder 

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