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 30 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
17.7°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 (30 Aug):

  • Morning surf: Morning surf (30 Aug, local time) - 2.5ft (0.7m), 9s period with SW swell.
  • Afternoon surf: Afternoon surf (30 Aug, local time) - 4.5ft (1.3m), 5s period with SSW swell.
  • Evening surf: Evening surf (30 Aug, local time) - 4.5ft (1.4m), 6s period with SSW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 3PM is: 1.3m 5s primary swell from a South-southwest direction and 0.5m 8s secondary swell from a Southwest direction (forecast issued at 06:00am August 30). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (30 Aug)2.5ft (0.7m)9s
Afternoon (30 Aug)4.5ft (1.3m)5s
Evening (30 Aug)4.5ft (1.4m)6s

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


Short Range Forecast

Light rain (total 9mm), mostly falling on Sun morning. Very mild (max 18°C on Tue night, min 14°C on Sun night). Winds increasing (light winds from the W on Sun night, strong winds from the SSW by Tue night).

Sunday
30
Monday
31
Tuesday
1
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
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)
0.9
SSW
9
0.7
SW
9
0.9
SSW
8
1.1
SSW
4
1.4
SSW
5
1.5
SSW
6
1.3
SSW
6
1.1
SW
7
0.9
SW
7
1.6
NW
5
1.7
WNW
6
1.4
NW
6
1.1
NW
5
0.5
SW
8
0.5
SW
7
0.4
SSW
7
0.7
SW
4
0.9
SW
4
1.1
SW
4
1
SW
5
1.3
SSW
5
1.6
SW
6
1.4
SW
6
Wave Graph
Metric surfscale
Energy kJ
135
77
113
42
103
149
128
116
79
143
176
110
57
30
27
21
12
21
41
47
90
159
118
Wind (km/h)
15
SSW
20
SSW
25
S
25
S
30
S
25
SSW
20
SSW
15
W
25
WNW
35
NW
30
NW
25
WNW
20
W
15
WSW
15
SSW
15
WSW
20
SW
20
SW
25
SW
30
SW
30
SW
30
SW
20
SSW
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross
cross-on
on
on
on
on
on
on
on
on
on
on
High Tide
11:19AM3.92m
11:30PM4.30m
11:49AM3.93m
00:03AM4.23m
12:23PM3.87m
Low Tide
6:01PM0.20m
6:27AM0.05m
6:37PM0.27m
7:03AM0.19m
7:16PM0.42m
clear
part cloud
cloud
thunderstorm
thunderstorm
thunderstorm
light rain
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
clear
clear
clear
part cloud
clear
part cloud
cloud
rain showers
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:22
6:24
6:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:13
8:09
8:07
 mm
2
1
1
1
1
1
Temp °C
16
15
17
17
17
16
15
15
14
14
14
15
16
16
16
16
15
15
15
16
16
16
18
Feels °C
14
12
14
13
12
12
12
13
10
7
8
9
12
13
13
13
11
12
11
12
11
12
15
  • 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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