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 06 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
17.2°C
1.7° 

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 (06 Sep):

  • Morning surf: Morning surf (06 Sep, local time) - 4.5ft (1.4m), 5s period with SSW swell.
  • Afternoon surf: Afternoon surf (06 Sep, local time) - 5ft (1.6m), 6s period with SSW swell.
  • Evening surf: Evening surf (06 Sep, local time) - 5ft (1.5m), 6s period with SSW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 11AM is: 1.4m 6s primary swell from a South-southwest direction and 0.1m 13s secondary swell from a Southwest direction (forecast issued at 06:00am September 06). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (06 Sep)4.5ft (1.4m)5s
Afternoon (06 Sep)5ft (1.6m)6s
Evening (06 Sep)5ft (1.5m)6s

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


Short Range Forecast

Moderate rain (total 12mm), heaviest on Mon night. Warm (max 20°C on Sun afternoon, min 12°C on Mon night). Winds increasing (light winds from the WSW on Sun night, strong winds from the SW by Mon night).

Sunday
6
Monday
7
Tuesday
8
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)
1.2
SSW
5
1.4
SSW
5
1.3
SSW
5
1.5
SSW
6
1.6
SSW
6
1.6
SW
6
1.5
SSW
6
1.4
SSW
6
1
SSW
6
0.7
SW
6
0.3
SW
14
0.3
SW
13
1.1
SW
5
1.8
SW
6
2.4
SW
6
2.2
SW
7
2.1
WSW
6
2.1
WSW
6
2
WSW
6
2.1
WSW
6
1.8
W
6
1.7
W
6
2
WNW
6
Wave Graph
Metric surfscale
Energy kJ
59
109
97
138
156
182
164
123
65
31
33
28
49
200
461
434
382
344
309
310
232
178
255
Wind (km/h)
30
S
30
S
30
SSE
40
S
35
S
30
SSW
25
SSW
30
SW
25
WNW
15
WSW
20
WSW
25
SW
30
SSW
35
SSW
45
SW
45
SW
35
W
35
WSW
40
W
35
W
35
W
40
W
40
W
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-on
on
on
cross-on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
5:48PM3.13m
6:46AM3.12m
7:12PM3.41m
7:58AM3.37m
8:11PM3.77m
Low Tide
12:11PM1.26m
00:57AM0.99m
1:29PM1.03m
2:07AM0.62m
2:30PM0.70m
cloud
light rain
light rain
clear
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
part cloud
cloud
cloud
light rain
light rain
light rain
cloud
clear
part cloud
part cloud
rain showers
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:35
6:35
6:37
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:55
7:53
7:52
 mm
1
1
2
3
5
1
Temp °C
15
14
15
18
20
18
17
17
15
15
15
15
16
16
15
14
12
13
13
14
15
14
14
Feels °C
9
10
10
11
14
14
14
14
11
12
11
10
11
10
7
6
4
5
5
7
8
7
6
  • 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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