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 28 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
16.5°C
1.7° 

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 (28 Sep):

  • Morning surf: Morning surf (28 Sep, local time) - 2.5ft (0.7m), 7s period with SW swell.
  • Afternoon surf: Afternoon surf (28 Sep, local time) - 2ft (0.6m), 7s period with SSW swell.
  • Evening surf: Evening surf (28 Sep, local time) - 1.5ft (0.4m), 7s period with SSW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 5PM is: 0.6m 7s primary swell from a South-southwest direction and 0.1m 12s secondary swell from a South direction (forecast issued at 12:00pm September 28). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (28 Sep)2.5ft (0.7m)7s
Afternoon (28 Sep)2ft (0.6m)7s
Evening (28 Sep)1.5ft (0.4m)7s

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


Short Range Forecast

Moderate rain (total 17mm), heaviest on Tue night. Warm (max 21°C on Tue afternoon, min 12°C on Mon night). Winds increasing (light winds from the ENE on Mon afternoon, strong winds from the S by Wed morning).

Mon
28
Tuesday
29
Wednesday
30
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)
0.7
SW
7
0.6
SSW
7
0.6
SSW
7
0.4
SSW
7
0.4
SSW
7
0.4
SW
7
0.7
SSE
4
0.5
S
5
0.7
S
5
0.9
SSE
5
1
SSE
5
1.4
SSE
5
1.7
S
6
2
S
7
3
SSW
9
2.2
SSW
10
2.2
SSW
10
2.3
SSW
7
2.5
SSW
7
2.3
SSW
11
2.1
SSW
11
Wave Graph
Metric surfscale
Energy kJ
53
34
33
18
18
11
16
16
25
40
58
98
205
382
1115
922
1040
476
581
1148
999
Wind (km/h)
10
SSW
15
SSW
15
SSE
10
ENE
20
ESE
15
ESE
15
E
15
E
25
E
20
SE
25
SE
35
SE
35
SSE
40
SSE
35
SW
30
S
45
S
45
S
45
SSW
30
SSW
25
SSW
Wind State
cross-on
on
cross-on
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross
cross
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
10:48AM4.13m
11:02PM4.37m
11:22AM4.15m
11:39PM4.28m
11:58AM4.06m
Low Tide
5:36PM0.07m
5:59AM-0.02m
6:15PM0.12m
6:39AM0.16m
6:57PM0.27m
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
light rain
light rain
heavy rain
light rain
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:13
—
—
—
—
—
—
7:13
—
—
—
—
—
—
—
7:16
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
—
7:02
—
—
—
—
—
—
—
7:00
—
—
—
—
—
—
6:58
—
—
 mm
—
—
—
—
—
—
—
—
—
—
—
—
1
2
11
1
—
—
—
—
—
Temp °C
14
15
15
15
16
15
13
12
15
18
20
21
19
18
16
15
16
16
16
15
15
Feels °C
11
12
12
12
12
11
9
9
11
15
16
16
14
13
11
10
8
8
8
9
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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