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 12 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
17.7° C
2.0° 

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 (12 Aug):

  • Morning surf: Morning surf (12 Aug, local time) - 0.5ft (0.1m), 12s period with SW swell.
  • Afternoon surf: Afternoon surf (12 Aug, local time) - 0.5ft (0.1m), 12s period with SW swell.
  • Evening surf: Evening surf (12 Aug, local time) - 0.5ft (0.1m), 12s period with SW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 1PM is: 0.1m 10s primary swell from a Southwest direction and 0.1m 6s secondary swell from a South direction, 0.4m 3s secondary swell from a South-southwest direction (forecast issued at 06:00am August 12). The wind direction is predicted to be onshore.

Time (BST) & DateWave HeightWave Period
Morning (12 Aug)0.5ft (0.1m)12s
Afternoon (12 Aug)0.5ft (0.1m)12s
Evening (12 Aug)0.5ft (0.1m)12s

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


Short Range Forecast

Mostly dry. Warm (max 27°C on Wed afternoon, min 13°C on Fri night). Wind will be generally light.

Wednesday
12
Thursday
13
Friday
14
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)
0.1
SW
11
0.1
SW
12
0.1
SW
12
0.4
SSW
3
0.1
SW
12
0.1
SW
12
0.1
SW
12
0.1
SW
11
0.4
SW
3
0.4
SW
3
0.1
SW
11
0.1
SW
10
0.1
SW
11
0.4
SW
3
0.6
SW
4
0.7
SW
4
0.6
SW
5
0.5
SW
4
0.4
SW
4
0.4
SW
4
0.3
WNW
4
0.2
SSW
4
0.1
SW
7
Wave Graph
Metric surfscale
Energy kJ
5
5
6
4
6
6
5
5
5
4
5
4
4
4
9
20
17
9
5
5
3
2
2
Wind (km/h)
15
SSE
10
S
15
S
15
SSW
10
W
5
N
5
SSE
10
S
10
S
10
S
15
SSW
15
SW
15
SW
15
SSW
20
S
20
S
15
SSW
10
SW
20
WNW
15
NNW
10
NNW
15
NNW
10
N
Wind State
cross-on
cross-on
cross-on
on
cross-on
glassy
cross-on
cross-on
cross-on
cross-on
on
on
on
on
cross-on
cross-on
cross-on
on
cross
cross-off
cross-off
cross-off
cross-off
High Tide
9:40AM3.86m
9:54PM4.35m
10:25AM4.00m
10:38PM4.54m
11:07AM4.05m
Low Tide
4:20PM0.13m
4:50AM-0.29m
5:04PM-0.02m
5:34AM-0.40m
5:45PM-0.06m
cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
part cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:52
5:52
5:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:52
8:50
8:47
 mm
Temp °C
21
20
21
23
27
26
24
23
21
21
21
22
22
21
19
18
17
17
16
16
18
18
16
Feels °C
19
17
18
20
25
25
23
21
19
19
20
21
21
21
18
16
16
17
14
14
17
16
14
  • 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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