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 03 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 (03 Aug):

  • Morning surf: Morning surf (03 Aug, local time) - 1ft (0.3m), 4s period with SSE swell.
  • Afternoon surf: Afternoon surf (03 Aug, local time) - 1ft (0.3m), 8s period with SW swell.
  • Evening surf: Evening surf (03 Aug, local time) - 1ft (0.3m), 8s period with SW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 3PM is: 0.3m 8s primary swell from a Southwest direction and 0.2m 4s secondary swell from a South direction, 0.2m 3s secondary swell from a South-southeast direction (forecast issued at 12:00pm August 03). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (03 Aug)1ft (0.3m)4s
Afternoon (03 Aug)1ft (0.3m)8s
Evening (03 Aug)1ft (0.3m)8s

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. Warm (max 22°C on Mon morning, min 13°C on Wed night). Winds increasing (calm on Mon morning, strong winds from the WSW by Wed morning).

Mon
3
Tuesday
4
Wednesday
5
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)
0.5
SE
4
0.2
WSW
8
0.3
SW
8
0.3
SW
8
0.3
SW
8
0.3
SW
8
0.3
SW
8
0.7
SSW
4
1.1
SSW
5
1.1
SSW
6
1.3
SSW
5
1.5
SSW
6
1.6
SSW
6
1.4
SW
6
1.3
SW
6
1.3
WSW
5
1.8
WSW
6
1.9
WSW
6
1.6
WSW
6
1.4
WSW
6
1.7
W
6
Wave Graph
Metric surfscale
Energy kJ
6
7
11
11
11
10
10
17
57
74
80
134
171
135
116
78
209
275
179
122
178
Wind (km/h)
5
SSW
5
W
15
WNW
15
NW
10
ENE
10
ESE
15
S
20
SSE
20
SSE
25
S
30
SSW
30
SSW
30
S
20
SW
25
WSW
30
WSW
40
W
40
WSW
35
W
35
W
35
W
Wind State
glassy
cross-on
cross-on
cross
off
cross-off
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
12:54PM3.59m
1:07AM3.94m
1:32PM3.51m
1:48AM3.77m
2:18PM3.37m
Low Tide
7:33AM0.34m
7:41PM0.62m
8:12AM0.50m
8:22PM0.79m
8:55AM0.70m
9:10PM0.99m
cloud
part cloud
cloud
cloud
light rain
cloud
light rain
cloud
light rain
light rain
clear
clear
clear
rain showers
part cloud
cloud
cloud
clear
clear
clear
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:37
5:37
5:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:09
9:07
9:06
 mm
1
1
1
1
1
Temp °C
21
22
21
15
15
17
17
17
17
19
18
18
17
16
15
14
14
15
17
17
15
Feels °C
20
20
18
13
14
16
16
14
15
16
13
13
13
14
11
8
7
7
10
11
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
How to use the Wavefinder 

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