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 01 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
17.0°C
1.4° 

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 (01 Sep):

  • Morning surf: Morning surf (01 Sep, local time) - 2.5ft (0.8m), 4s period with SW swell.
  • Afternoon surf: Afternoon surf (01 Sep, local time) - 3.5ft (1.1m), 5s period with SW swell.
  • Evening surf: Evening surf (01 Sep, local time) - 4.5ft (1.3m), 6s period with SSW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 10AM is: 0.8m 4s primary swell from a Southwest direction (forecast issued at 06:00am September 01). The wind direction is predicted to be onshore.

Time (BST) & DateWave HeightWave Period
Morning (01 Sep)2.5ft (0.8m)4s
Afternoon (01 Sep)3.5ft (1.1m)5s
Evening (01 Sep)4.5ft (1.3m)6s

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


Short Range Forecast

Moderate rain (total 15mm), heaviest on Wed morning. Very mild (max 18°C on Tue afternoon, min 15°C on Tue morning). Winds increasing (light winds from the SW on Tue night, fresh winds from the SSW by Thu afternoon).

Tuesday
1
Wednesday
2
Thursday
3
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)
0.6
WSW
7
0.6
SW
7
0.8
SW
4
1
SW
4
1.2
SSW
5
1.3
SSW
6
1.1
SW
6
0.8
SSW
5
0.7
SSW
5
0.9
SSW
5
1.4
SSW
5
1.9
SSW
6
1.9
SSW
6
1.7
SSW
6
1.7
SSW
7
1.8
SW
7
1.5
SW
7
1.3
SW
7
1.2
SW
7
1.3
SW
6
1.2
SW
6
1.2
SSW
6
1.7
SW
7
Wave Graph
Metric surfscale
Energy kJ
35
37
20
36
67
101
69
34
23
40
99
272
266
231
244
287
198
140
124
116
105
106
263
Wind (km/h)
15
SW
20
SSW
25
SW
30
SW
30
SW
25
SW
10
WSW
10
SW
15
SSW
25
SSW
25
SSE
35
S
30
SSW
30
SSW
30
SSW
30
SW
25
SW
25
SW
25
SW
30
SW
30
SSW
35
SSW
35
SSW
Wind State
on
on
on
on
on
on
cross-on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
on
on
on
on
on
on
High Tide
12:23PM3.87m
00:40AM4.07m
1:01PM3.73m
1:22AM3.82m
1:47PM3.51m
Low Tide
7:03AM0.19m
7:16PM0.42m
7:43AM0.43m
7:59PM0.63m
8:28AM0.72m
8:50PM0.88m
clear
clear
clear
part cloud
cloud
light rain
light rain
cloud
cloud
cloud
light rain
light rain
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:26
6:28
6:30
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:07
8:06
8:02
 mm
1
1
5
4
1
Temp °C
16
15
15
16
16
18
17
17
16
15
15
16
17
17
16
17
17
17
17
17
17
17
17
Feels °C
13
12
11
12
11
14
15
17
14
12
12
11
13
14
12
13
14
14
13
13
12
12
12
  • 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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