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 05 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
17.3°C
1.8° 

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 (05 Sep):

  • Morning surf: Morning surf (05 Sep, local time) - 3.5ft (1.1m), 5s period with W swell.
  • Afternoon surf: Afternoon surf (05 Sep, local time) - 1.5ft (0.5m), 6s period with SW swell.
  • Evening surf: Evening surf (05 Sep, local time) - 2.5ft (0.7m), 4s period with SW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 2PM is: 0.7m 4s primary swell from a West-southwest direction (forecast issued at 06:00am September 05). An open ocean swell of 0.4m 4s is not directed at the surf break, a second open ocean swell of 0.3m 5s is not directed at the surf break. The wind direction is predicted to be onshore.

Time (BST) & DateWave HeightWave Period
Morning (05 Sep)3.5ft (1.1m)5s
Afternoon (05 Sep)1.5ft (0.5m)6s
Evening (05 Sep)2.5ft (0.7m)4s

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


Short Range Forecast

Moderate rain (total 10mm), heaviest on Sun morning. Very mild (max 19°C on Sun afternoon, min 13°C on Mon night). Winds increasing (light winds from the WSW on Sat morning, strong winds from the SW by Mon afternoon).

Saturday
5
Sunday
6
Monday
7
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)
1.2
WNW
5
1.2
W
5
1
W
5
0.7
WSW
4
0.5
SW
6
0.7
SW
4
0.7
SW
4
1
SSW
4
1.2
SSW
5
1.3
SSW
5
1.3
SSW
5
1.4
SSW
5
1.5
SSW
6
1.7
SSW
6
1.7
SSW
6
1.4
SW
6
0.9
SSW
6
0.9
WSW
6
0.4
SW
14
1.6
SW
5
2.1
SW
6
1.6
SW
6
1.6
SW
6
Wave Graph
Metric surfscale
Energy kJ
74
74
49
18
16
13
18
35
59
86
88
107
134
223
223
147
59
55
52
140
320
196
220
Wind (km/h)
30
WNW
20
W
20
W
15
WSW
20
SSW
20
SSW
20
S
25
S
25
S
30
S
30
S
40
S
35
SSW
30
SSW
30
SSW
25
SW
20
W
20
WSW
25
SW
30
SSW
40
SW
30
WSW
30
WSW
Wind State
cross-on
cross-on
cross-on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-on
on
on
on
on
on
High Tide
4:06PM3.08m
5:04AM3.02m
5:48PM3.13m
6:46AM3.12m
7:12PM3.41m
Low Tide
10:40AM1.25m
11:26PM1.19m
12:11PM1.26m
00:57AM0.99m
1:29PM1.03m
clear
part cloud
clear
clear
part cloud
cloud
part cloud
cloud
cloud
light rain
rain showers
clear
cloud
part cloud
part cloud
light rain
part cloud
part cloud
cloud
part cloud
part cloud
light rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:33
6:35
6:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:59
7:55
7:53
 mm
2
3
1
3
1
Temp °C
14
14
14
14
14
15
15
15
15
14
15
18
19
18
17
16
15
15
14
15
16
15
15
Feels °C
9
10
11
11
11
11
11
10
10
9
10
11
13
13
14
13
12
12
9
9
10
10
10
  • 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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