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 20 Oct 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
15.1°C
1.5° 

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 (20 Oct):

  • Morning surf: Morning surf (20 Oct, local time) - 2ft (0.6m), 6s period with S swell.
  • Afternoon surf: Afternoon surf (20 Oct, local time) - 1.5ft (0.4m), 5s period with SSW swell.
  • Evening surf: Evening surf (20 Oct, local time) - 1.5ft (0.5m), 4s period with S swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 2PM is: 0.5m 5s primary swell from a South direction (forecast issued at 06:00am October 20). The wind direction is predicted to be glassy.

Time (BST) & DateWave HeightWave Period
Morning (20 Oct)2ft (0.6m)6s
Afternoon (20 Oct)1.5ft (0.4m)5s
Evening (20 Oct)1.5ft (0.5m)4s

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


Short Range Forecast

Heavy rain (total 30mm), heaviest during Wed morning. Very mild (max 12°C on Thu morning, min 8°C on Tue morning). Winds increasing (calm on Tue morning, near gales from the NW by Wed morning).

Tuesday
20
Wednesday
21
Thursday
22
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
1
1
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)
0.7
S
5
0.7
S
5
0.6
S
6
0.5
S
6
0.4
SSW
5
0.4
SSW
5
0.6
S
4
0.9
S
4
1
S
5
0.9
SSW
6
1
SSW
7
1.1
SW
9
2.5
NW
7
1.9
NW
6
1.1
W
5
1
WSW
5
1.2
WSW
4
1
WSW
5
1
WSW
5
0.9
SW
8
1
SW
8
0.9
SSW
8
0.8
SSW
8
Wave Graph
Metric surfscale
Energy kJ
20
25
26
17
8
7
12
31
54
66
91
168
561
284
62
45
52
47
42
109
129
114
84
Wind (km/h)
10
SE
5
ESE
10
SE
5
SE
10
SSE
10
SE
15
SSE
20
SE
15
ESE
15
ENE
5
ENE
60
NW
60
NW
40
WNW
25
WNW
20
W
20
W
20
W
20
WSW
15
SW
20
SSE
20
E
25
ESE
Wind State
cross-off
cross-off
cross-off
glassy
cross
cross
cross
cross
cross-off
cross-off
off
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-off
cross-off
High Tide
6:20PM3.01m
7:05AM2.89m
7:09PM3.23m
7:44AM3.14m
7:46PM3.49m
Low Tide
11:56AM1.59m
00:49AM1.28m
1:04PM1.38m
1:41AM0.99m
1:53PM1.11m
cloud
cloud
cloud
light rain
light rain
light rain
part cloud
clear
part cloud
light rain
light rain
light rain
light rain
rain showers
clear
part cloud
light rain
clear
clear
clear
cloud
cloud
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
7:52
—
—
—
—
—
—
—
7:54
—
—
—
—
—
—
—
7:56
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
—
—
6:12
—
—
—
—
—
—
—
6:09
—
—
—
—
—
—
—
6:07
—
—
 mm
—
—
—
2
3
1
—
—
—
3
3
5
4
2
—
—
1
—
—
—
—
—
1
Temp °C
10
10
10
8
9
9
10
10
10
9
10
10
9
10
10
10
10
10
11
12
12
11
11
Feels °C
7
8
7
6
7
6
6
6
6
6
9
-2
-3
1
4
5
5
5
6
8
7
7
6
  • 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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