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 pm 26 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
16.7°C
1.9° 

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 (26 Sep):

  • Afternoon surf: Afternoon surf (26 Sep, local time) - 4.5ft (1.4m), 5s period with SW swell.
  • Evening surf: Evening surf (26 Sep, local time) - 4.5ft (1.4m), 6s period with SW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 11PM is: 1.3m 6s primary swell from a South-southwest direction and 0.1m 14s secondary swell from a South direction (forecast issued at 06:00pm September 26). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (26 Sep)--
Afternoon (26 Sep)4.5ft (1.4m)5s
Evening (26 Sep)4.5ft (1.4m)6s

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


Short Range Forecast

Light rain (total 8mm), mostly falling on Sun morning. Very mild (max 16°C on Sun morning, min 12°C on Mon night). Winds decreasing (near gales from the S on Sun morning, light winds from the SSW by Sun night).

Sat
26
Sunday
27
Monday
28
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
1
0
0
1
1
1
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.4
SW
5
1.4
SW
6
1.4
SW
6
1.3
SSW
5
1.3
SSW
5
1.2
SSW
5
1.4
S
5
2.5
S
7
2
SW
7
1.3
SSW
7
1
SSW
7
0.8
SSW
7
0.8
SSW
7
0.7
SW
7
0.7
SSW
7
0.6
SSW
7
0.5
SW
7
0.4
SSW
7
0.4
SW
7
Wave Graph
Metric surfscale
Energy kJ
102
128
114
86
82
87
112
589
423
160
105
64
66
50
42
32
23
18
11
Wind (km/h)
30
SSW
30
SSW
25
S
25
S
25
SSE
20
SSE
30
SSE
55
S
35
W
15
WNW
20
W
15
WNW
10
W
5
SSW
10
SSE
10
S
10
SE
10
ENE
15
ESE
Wind State
on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-off
cross-off
High Tide
9:58PM4.25m
10:18AM4.03m
10:29PM4.36m
10:48AM4.13m
Low Tide
4:23PM0.24m
4:46AM-0.05m
4:58PM0.11m
5:22AM-0.09m
5:36PM0.07m
clear
clear
clear
cloud
cloud
light rain
light rain
light rain
rain showers
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
—
—
—
7:11
—
—
—
—
—
—
—
7:13
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
7:07
—
—
—
—
—
—
—
7:05
—
—
—
—
—
—
—
7:02
—
 mm
—
—
—
—
—
1
2
4
1
—
—
—
—
—
—
—
—
—
—
Temp °C
15
15
15
14
14
13
13
16
15
14
15
13
13
13
13
14
15
15
14
Feels °C
10
11
11
9
10
9
7
6
8
11
11
9
11
11
11
12
13
12
11
  • 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
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