Llanddwyn Island Surf Break

Lat Long: 53.13° N 4.42° W

Llanddwyn Island 48 hour detailed Surf Forecast

Issued: 12 am 17 Sep 2026 (local time)

Forecast update in  hr  min

Today's Llanddwyn Island sea temperature is
16.6°C
1.3° 

Llanddwyn Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Llanddwyn Island today (17 Sep):

  • Morning surf: Morning surf (17 Sep, local time) - 5ft (1.5m), 6s period with W swell.
  • Afternoon surf: Afternoon surf (17 Sep, local time) - 5ft (1.5m), 6s period with W swell.
  • Evening surf: Evening surf (17 Sep, local time) - 4.5ft (1.4m), 6s period with W swell.

The current surf forecast for Llanddwyn Island at 5AM is: 1.7m 6s primary swell from a West-southwest direction (forecast issued at 12:00am September 17). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (17 Sep)5ft (1.5m)6s
Afternoon (17 Sep)5ft (1.5m)6s
Evening (17 Sep)4.5ft (1.4m)6s

Table - waves today at Llanddwyn Island. (Swell directed towards the surf break)


Short Range Forecast

Moderate rain (total 15mm), heaviest on Fri afternoon. Very mild (max 17°C on Fri afternoon, min 13°C on Wed night). Winds decreasing (strong winds from the SW on Fri afternoon, moderate winds from the W by Sat afternoon).

Thursday
17
Friday
18
Saturday
19
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
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
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)
1.6
SW
6
1.7
WSW
6
1.6
WSW
7
1.4
W
6
1.5
W
6
1.5
W
6
1.4
W
6
1.5
W
6
1.4
W
6
1.2
W
5
1.1
WSW
5
1.2
WSW
5
1.7
SW
6
2.3
SW
7
2.2
SW
7
2.1
SW
7
2.1
SW
7
2.1
SW
7
2.2
SW
7
2.2
SW
7
1.5
WSW
7
1.3
WSW
7
1.2
WSW
7
1.1
WSW
7
Wave Graph
Metric surfscale
Energy kJ
171
232
206
123
136
136
117
134
121
82
66
67
185
527
529
452
452
492
529
503
243
164
142
121
Wind (km/h)
35
SW
35
WSW
25
WNW
30
W
30
W
30
W
25
W
30
W
30
W
25
W
20
WSW
30
SW
40
SSW
40
SW
35
SW
30
SW
35
SW
35
SW
30
SW
30
WSW
30
WSW
25
W
20
W
25
W
Wind State
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
on
on
on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
1:24AM3.48m
1:40PM3.31m
2:09AM3.11m
2:30PM3.01m
3:16AM2.79m
3:54PM2.78m
Low Tide
8:09AM1.03m
8:30PM1.08m
8:52AM1.36m
9:24PM1.38m
9:52AM1.62m
light rain
rain showers
clear
clear
cloud
part cloud
clear
clear
clear
part cloud
part cloud
cloud
light rain
mod rain
light rain
cloud
part cloud
cloud
cloud
clear
cloud
part cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:52
6:54
6:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:29
7:27
7:23
 mm
2
2
1
9
1
Temp °C
14
15
13
14
15
15
15
14
13
14
13
14
14
15
17
16
16
16
17
17
16
17
16
15
Feels °C
8
10
8
8
8
9
10
8
7
9
9
9
7
8
13
11
11
11
13
13
11
12
12
11
  • 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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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Llanddwyn Island surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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