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 10 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
17.0°C
1.6° 

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 (10 Sep):

  • Morning surf: Morning surf (10 Sep, local time) - 5ft (1.5m), 5s period with SSW swell.
  • Afternoon surf: Afternoon surf (10 Sep, local time) - 7ft (2.2m), 7s period with SSW swell.
  • Evening surf: Evening surf (10 Sep, local time) - 4.5ft (1.4m), 7s period with SW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 7PM is: 1.7m 7s primary swell from a South-southwest direction (forecast issued at 12:00pm September 10). The wind direction is predicted to be onshore.

Time (BST) & DateWave HeightWave Period
Morning (10 Sep)5ft (1.5m)5s
Afternoon (10 Sep)7ft (2.2m)7s
Evening (10 Sep)4.5ft (1.4m)7s

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


Short Range Forecast

Moderate rain (total 11mm), heaviest on Sat morning. Very mild (max 18°C on Sat night, min 14°C on Thu night). Winds decreasing (strong winds from the SSW on Thu morning, light winds from the W by Fri afternoon).

Thu
10
Friday
11
Saturday
12
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)
1.6
SSW
5
2.2
SSW
6
2.2
SSW
7
1.7
SSW
7
1.4
SW
7
1.1
SW
7
0.9
SW
7
0.7
SW
6
0.6
SW
6
0.6
SSW
6
0.5
SW
6
0.4
SSW
6
0.5
SSW
6
1
SSW
4
1.6
SW
6
1.9
SW
6
1.9
SW
6
2.1
SW
7
2.2
SW
7
1.9
SW
7
1.5
SW
7
Wave Graph
Metric surfscale
Energy kJ
143
389
437
251
168
103
63
42
33
26
19
15
20
40
145
252
284
381
447
305
192
Wind (km/h)
40
S
45
SSW
35
SSW
25
SW
20
WSW
20
W
15
WNW
20
WNW
20
WNW
15
WNW
10
W
10
S
20
S
30
SSW
35
SSW
40
SSW
40
SW
35
SW
30
SW
30
SW
20
SW
Wind State
cross-on
cross-on
on
on
cross-on
cross-on
cross-on
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
on
on
on
on
High Tide
9:29AM3.86m
9:39PM4.37m
10:06AM4.03m
10:17PM4.51m
10:42AM4.11m
Low Tide
4:02PM0.12m
4:31AM-0.30m
4:43PM-0.03m
5:10AM-0.34m
5:22PM-0.06m
cloud
cloud
light rain
light rain
part cloud
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
light rain
light rain
light rain
part cloud
cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:41
6:43
6:45
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:46
7:44
7:42
 mm
2
1
2
3
2
1
Temp °C
15
16
16
17
17
16
15
14
14
14
14
14
14
14
15
16
16
16
17
17
18
Feels °C
8
9
10
14
14
13
13
11
11
11
12
12
11
9
9
10
10
11
14
14
16
  • 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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