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 29 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
17.8°C
2.1° 

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 Aug):

  • Morning surf: Morning surf (29 Aug, local time) - 2.5ft (0.8m), 6s period with SSW swell.
  • Afternoon surf: Afternoon surf (29 Aug, local time) - 2.5ft (0.7m), 6s period with SSW swell.
  • Evening surf: Evening surf (29 Aug, local time) - 2.5ft (0.7m), 7s period with SSW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 12PM is: 0.7m 6s primary swell from a South-southwest direction (forecast issued at 06:00am August 29). The wind direction is predicted to be offshore.

Time (BST) & DateWave HeightWave Period
Morning (29 Aug)2.5ft (0.8m)6s
Afternoon (29 Aug)2.5ft (0.7m)6s
Evening (29 Aug)2.5ft (0.7m)7s

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


Short Range Forecast

Moderate rain (total 10mm), heaviest on Sat morning. Very mild (max 17°C on Sat afternoon, min 14°C on Sun night). Winds increasing (light winds from the NNW on Sat afternoon, fresh winds from the WNW by Sun night).

Saturday
29
Sunday
30
Monday
31
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
1
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)
0.8
SSW
6
0.8
SSW
6
0.8
SSW
6
0.7
SSW
6
0.5
SSW
6
0.5
SSW
6
0.8
SSW
8
0.9
SSW
9
0.9
SSW
9
0.8
SW
9
0.7
SW
8
0.5
SW
8
1.2
SSW
5
1.2
SSW
6
1.4
SW
6
1.3
SW
7
1.6
WNW
5
1.8
NW
6
1.5
NW
6
1.2
NW
5
0.5
SW
8
0.5
SW
7
0.6
SW
7
Wave Graph
Metric surfscale
Energy kJ
44
47
44
34
21
22
67
129
135
91
72
33
59
87
122
160
138
222
143
83
30
27
43
Wind (km/h)
20
SSW
15
SSE
10
S
10
NNE
15
N
10
NNW
10
NW
10
WSW
15
SSW
15
S
25
S
30
S
30
S
25
SSW
15
SSW
20
W
40
WNW
35
WNW
30
WNW
25
WNW
15
WSW
15
SSW
15
SSW
Wind State
cross-on
cross
cross-on
cross-off
cross-off
cross-off
cross
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross-on
cross-on
on
cross-on
High Tide
10:51AM3.84m
11:00PM4.28m
11:19AM3.92m
11:30PM4.30m
11:49AM3.93m
Low Tide
5:26PM0.21m
5:52AM0.00m
6:01PM0.20m
6:27AM0.05m
6:37PM0.27m
cloud
cloud
light rain
light rain
light rain
part cloud
cloud
cloud
clear
clear
thunderstorm
light rain
thunderstorm
thunderstorm
clear
clear
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:20
6:22
6:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:15
8:13
8:09
 mm
1
4
1
1
1
1
1
Temp °C
16
16
16
16
16
17
15
15
15
15
17
17
17
16
15
15
14
14
14
15
15
16
16
Feels °C
14
15
15
16
15
17
14
15
13
13
14
13
12
12
13
12
7
8
8
9
11
13
13
  • 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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