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 13 Sep 2026 (local time)

Forecast update in  hr  min

Today's Cable Bay (Porth Trecastell) sea temperature is
16.8°C
1.5° 

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 (13 Sep):

  • Morning surf: Morning surf (13 Sep, local time) - 2ft (0.6m), 6s period with SSW swell.
  • Afternoon surf: Afternoon surf (13 Sep, local time) - 1.5ft (0.5m), 6s period with SW swell.
  • Evening surf: Evening surf (13 Sep, local time) - 1.5ft (0.4m), 6s period with SSW swell.

The current surf forecast for Cable Bay (Porth Trecastell) at 7PM is: 0.4m 6s primary swell from a South-southwest direction (forecast issued at 12:00pm September 13). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (13 Sep)2ft (0.6m)6s
Afternoon (13 Sep)1.5ft (0.5m)6s
Evening (13 Sep)1.5ft (0.4m)6s

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


Short Range Forecast

Light rain (total 4mm), mostly falling on Mon night. Very mild (max 17°C on Sun morning, min 13°C on Tue night). Winds increasing (light winds from the NW on Sun morning, strong winds from the SSW by Mon night).

Sun
13
Monday
14
Tuesday
15
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)
0.6
SSW
6
0.6
SSW
6
0.5
SW
6
0.4
SSW
6
0.4
SW
6
0.5
SSW
6
0.7
SSW
4
0.7
SSW
5
0.7
SSW
5
0.9
SSW
4
1.3
SSW
5
1.7
SSW
6
1.8
SSW
6
1.9
SW
6
1.7
SW
6
1.4
SW
6
1.6
WSW
5
1.4
W
5
1.2
W
5
0.8
SW
6
1
NW
4
Wave Graph
Metric surfscale
Energy kJ
25
24
18
14
9
18
13
19
21
29
86
184
246
293
233
152
138
110
75
45
38
Wind (km/h)
5
NW
10
W
5
W
10
S
15
SSE
20
S
20
SSW
20
S
20
S
30
SSW
35
SSW
35
S
40
SSW
30
SW
30
SW
20
W
30
W
30
W
20
W
20
WNW
25
WNW
Wind State
cross-off
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross
cross
High Tide
11:16AM4.11m
11:30PM4.39m
11:50AM4.02m
00:07AM4.16m
12:24PM3.85m
Low Tide
5:59PM0.01m
6:23AM-0.01m
6:35PM0.19m
6:58AM0.30m
7:12PM0.44m
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
cloud
cloud
clear
part cloud
light rain
part cloud
rain showers
rain showers
cloud
clear
cloud
rain showers
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:47
6:48
6:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:38
7:37
7:35
 mm
1
1
1
1
Temp °C
16
17
17
17
17
17
15
16
17
15
16
17
17
17
16
15
14
14
15
15
15
Feels °C
16
17
17
17
16
16
13
14
16
11
10
12
12
13
12
12
8
8
11
11
10
  • 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 

Eyeball surf reportRecent Eyeball Surf Reports for Wales - Anglesy

  1. West Coast Surf: ‘Porth Neigwl: Choppy waves hadn't tidied much (from what I could see in the dark.’

    Hells Mouth (Porth Neigwl), 45 km away
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