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 am 04 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
16.9° C
1.4° 

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 (04 Aug):

  • Morning surf: Morning surf (04 Aug, local time) - 3.5ft (1.1m), 5s period with SSW swell.
  • Afternoon surf: Afternoon surf (04 Aug, local time) - 4ft (1.2m), 5s period with SSW swell.
  • Evening surf: Evening surf (04 Aug, local time) - 5ft (1.5m), 6s period with SSW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 7AM is: 0.9m 4s primary swell from a South-southwest direction and 0.3m 8s secondary swell from a Southwest direction (forecast issued at 12:00am August 04). An open ocean swell of 0.1m 4s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (BST) & DateWave HeightWave Period
Morning (04 Aug)3.5ft (1.1m)5s
Afternoon (04 Aug)4ft (1.2m)5s
Evening (04 Aug)5ft (1.5m)6s

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


Short Range Forecast

Light rain (total 5mm), mostly falling on Mon night. Very mild (max 19°C on Tue morning, min 13°C on Wed night). Winds increasing (calm on Mon night, fresh winds from the W by Wed morning).

Tuesday
4
Wednesday
5
Thursday
6
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
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
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)
0.3
SW
8
0.3
SW
8
0.9
SSW
4
1.2
SSW
5
1.1
SSW
6
1.2
SSW
5
1.5
SSW
5
1.5
SSW
6
1.1
SW
6
1.4
WSW
5
1.5
W
5
1.6
W
6
1.5
W
6
1.3
W
5
1.2
W
5
1.4
W
5
1.7
WNW
6
1.6
NW
6
1.6
NW
6
1.4
NW
6
0.5
SW
6
0.4
SW
6
0.5
SW
6
0.4
SSW
6
Wave Graph
Metric surfscale
Energy kJ
10
10
29
70
74
74
125
154
75
80
117
152
141
92
70
100
173
165
161
124
17
11
16
12
Wind (km/h)
10
ESE
15
S
25
SSE
20
SSE
25
S
30
SSW
30
SSW
30
SSW
20
W
30
W
30
W
35
W
30
W
30
W
25
W
35
W
35
W
30
WNW
30
WNW
25
WNW
20
WNW
15
WSW
20
SW
15
S
Wind State
cross-off
cross-on
cross
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
on
on
cross-on
High Tide
1:07AM3.94m
1:32PM3.51m
1:48AM3.77m
2:18PM3.37m
2:39AM3.55m
3:15PM3.22m
Low Tide
8:12AM0.50m
8:22PM0.79m
8:55AM0.70m
9:10PM0.99m
9:47AM0.92m
cloud
cloud
light rain
light rain
cloud
part cloud
clear
clear
rain showers
part cloud
cloud
cloud
part cloud
part cloud
clear
clear
cloud
cloud
cloud
part cloud
part cloud
clear
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:37
5:39
5:41
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:07
9:06
9:04
 mm
1
1
1
Temp °C
18
17
17
17
19
18
18
17
16
14
14
14
15
16
17
15
14
13
13
13
14
15
15
15
Feels °C
18
16
14
15
16
15
14
13
14
9
8
7
9
10
11
8
8
7
8
8
10
12
11
12
  • 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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