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 29 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 (29 Sep):

  • Morning surf: Morning surf (29 Sep, local time) - 3ft (0.9m), 5s period with SSE swell.
  • Afternoon surf: Afternoon surf (29 Sep, local time) - 4ft (1.2m), 5s period with SSE swell.
  • Evening surf: Evening surf (29 Sep, local time) - 6ft (1.8m), 7s period with S swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 6PM is: 1.5m 6s primary swell from a South direction (forecast issued at 12:00pm September 29). An open ocean swell of 0.2m 5s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (BST) & DateWave HeightWave Period
Morning (29 Sep)3ft (0.9m)5s
Afternoon (29 Sep)4ft (1.2m)5s
Evening (29 Sep)6ft (1.8m)7s

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


Short Range Forecast

Heavy rain (total 26mm), heaviest during Tue night. Warm (max 22°C on Tue afternoon, min 14°C on Wed night). Winds decreasing (strong winds from the S on Wed morning, moderate winds from the SW by Wed night).

Tue
29
Wednesday
30
Thursday
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
1
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)
0.9
SSE
5
0.9
SSE
5
1.3
SSE
5
1.7
S
6
1.8
S
7
2.1
SSW
8
2.5
SSW
9
2.1
SSW
10
2.3
SSW
11
2.5
SSW
7
2.5
SSW
7
2.5
SSW
7
2.2
SSW
11
1.9
SSW
11
1.7
SW
11
1.6
SW
10
1.6
SW
10
1.4
SW
10
1.4
SW
10
1.6
SSW
6
1.8
SSW
6
Wave Graph
Metric surfscale
Energy kJ
36
46
91
207
295
520
877
868
1214
689
773
701
1155
799
652
582
517
412
408
160
226
Wind (km/h)
25
ESE
30
SE
40
SE
35
SSE
35
SSE
35
SSE
40
SW
30
S
45
S
45
S
45
S
35
S
30
SSW
25
SSW
20
SW
20
SW
25
SW
25
SSW
30
SSW
35
SSW
35
S
Wind State
cross-off
cross
cross
cross
cross-on
cross
on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
on
on
on
on
cross-on
cross-on
cross-on
High Tide
11:22AM4.15m
11:39PM4.28m
11:58AM4.06m
00:19AM4.07m
12:39PM3.87m
Low Tide
6:15PM0.12m
6:39AM0.16m
6:57PM0.27m
7:22AM0.44m
7:45PM0.50m
part cloud
part cloud
cloud
cloud
cloud
mod rain
mod rain
rain showers
clear
clear
clear
clear
thunderstorm
part cloud
rain showers
light rain
rain showers
clear
cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:13
—
—
—
—
—
—
7:16
—
—
—
—
—
—
—
7:18
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
—
7:00
—
—
—
—
—
—
6:58
—
—
—
—
—
—
—
6:55
—
—
 mm
—
—
—
—
—
6
7
2
—
—
—
—
1
—
1
2
1
—
—
—
—
Temp °C
16
19
22
21
20
17
15
15
16
16
16
15
14
14
14
14
14
14
15
15
14
Feels °C
12
14
16
16
15
12
9
10
8
8
8
8
9
9
10
10
9
9
9
9
8
  • 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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