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 28 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
17.8°C
2.2° 

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 (28 Aug):

  • Morning surf: Morning surf (28 Aug, local time) - 1.5ft (0.4m), 6s period with SSW swell.
  • Afternoon surf: Afternoon surf (28 Aug, local time) - 1.5ft (0.4m), 6s period with SSW swell.
  • Evening surf: Evening surf (28 Aug, local time) - 1.5ft (0.5m), 6s period with SSW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 4PM is: 0.4m 6s primary swell from a South-southwest direction (forecast issued at 12:00pm August 28). An open ocean swell of 0.3m 3s is not directed at the surf break. The wind direction is predicted to be onshore.

Time (BST) & DateWave HeightWave Period
Morning (28 Aug)1.5ft (0.4m)6s
Afternoon (28 Aug)1.5ft (0.4m)6s
Evening (28 Aug)1.5ft (0.5m)6s

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


Short Range Forecast

Moderate rain (total 12mm), heaviest on Sat morning. Very mild (max 18°C on Sun morning, min 15°C on Sat afternoon). Wind will be generally light.

Fri
28
Saturday
29
Sunday
30
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
1
0
0
0
0
1
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)
0.4
SSW
6
0.4
SSW
6
0.4
SSW
6
0.7
SSW
6
0.5
SSW
6
0.8
SSW
6
0.9
SSW
6
0.9
SSW
6
0.9
SSW
6
0.7
SSW
6
0.5
SSW
6
0.5
SSW
6
0.8
SSW
8
1
SSW
9
0.9
SW
9
0.7
SW
9
0.6
SSW
8
0.9
SSW
8
1.1
SSW
5
1.2
SSW
5
1.2
SW
7
Wave Graph
Metric surfscale
Energy kJ
16
16
16
34
22
41
53
58
60
33
20
20
88
157
115
79
48
119
48
80
139
Wind (km/h)
10
W
15
W
15
WSW
20
SSW
20
S
20
SSW
25
SSW
15
S
10
ESE
15
NE
10
NE
15
N
10
NW
10
W
15
SSW
20
SSW
25
S
25
S
25
SSE
25
SSW
20
S
Wind State
cross-on
cross-on
on
on
cross-on
cross-on
cross-on
cross-on
cross-off
off
off
cross-off
cross
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
10:23AM3.73m
10:32PM4.18m
10:51AM3.84m
11:00PM4.28m
11:19AM3.92m
Low Tide
4:53PM0.30m
5:18AM0.06m
5:26PM0.21m
5:52AM0.00m
6:01PM0.20m
rain showers
light rain
clear
clear
clear
part cloud
cloud
cloud
light rain
light rain
cloud
cloud
light rain
part cloud
part cloud
clear
cloud
light rain
light rain
rain showers
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:18
6:20
6:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:16
8:15
8:13
 mm
1
1
1
3
1
1
3
1
Temp °C
16
17
17
17
16
16
16
16
16
16
16
15
15
15
15
15
16
18
15
16
15
Feels °C
15
16
15
15
14
14
13
15
16
14
15
14
14
14
13
12
13
14
11
12
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
How to use the Wavefinder 

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