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 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 5PM is: 1.6m 6s primary swell from a South-southwest direction and 0.1m 13s secondary swell from a Southwest direction (forecast issued at 12:00pm 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 16mm), heaviest on Mon night. Very mild (max 19°C on Sun afternoon, min 12°C on Mon night). Winds increasing (light winds from the WSW on Sun night, strong winds from the WNW by Tue night).

Sun
6
Monday
7
Tuesday
8
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)
1.4
SSW
5
1.6
SSW
6
1.6
SSW
6
1.6
SW
6
1.5
SSW
6
1.4
SW
6
1.1
SW
6
0.8
SSW
6
0.3
SW
14
0.3
SW
13
1.3
SSW
5
1.9
SW
6
1.8
SW
7
2
SW
7
1.7
SW
7
1.7
WSW
6
1.7
W
6
1.7
W
6
1.7
W
6
1.6
W
5
1.9
WNW
6
Wave Graph
Metric surfscale
Energy kJ
111
160
162
182
164
137
75
39
33
32
80
266
290
345
248
175
177
178
178
138
238
Wind (km/h)
35
S
40
S
35
S
30
SSW
30
SSW
30
SSW
25
WNW
15
WSW
25
WSW
25
SW
30
SSW
40
SSW
40
WSW
35
SW
20
WNW
30
W
35
W
35
W
35
W
40
WNW
40
WNW
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
on
on
on
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
light rain
part cloud
clear
part cloud
part cloud
cloud
light rain
part cloud
cloud
part cloud
cloud
light rain
light rain
light rain
light rain
rain showers
clear
cloud
rain showers
clear
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
2
1
1
3
2
4
2
1
Temp °C
15
18
19
18
17
17
15
15
15
15
16
16
16
15
12
13
13
14
15
15
14
Feels °C
9
11
13
14
14
13
11
12
11
10
11
10
9
9
8
7
6
6
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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