Llanddwyn Island Surf Break

Lat Long: 53.13° N 4.42° W

Llanddwyn Island 48 hour detailed Surf Forecast

Issued: 6 pm 10 Sep 2026 (local time)

Forecast update in  hr  min

Today's Llanddwyn Island sea temperature is
17.3°C
1.9° 

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 (11 Sep):

  • Afternoon surf: Afternoon surf (11 Sep, local time) - 6ft (1.9m), 7s period with SW swell.
  • Evening surf: Evening surf (11 Sep, local time) - 4.5ft (1.4m), 7s period with SW swell.

The current surf forecast for Llanddwyn Island at 12AM is: 1.2m 7s primary swell from a Southwest direction and 0.4m 8s secondary swell from a Southwest direction (forecast issued at 06:00pm September 10). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (11 Sep)--
Afternoon (11 Sep)6ft (1.9m)7s
Evening (11 Sep)4.5ft (1.4m)7s

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


Short Range Forecast

Moderate rain (total 10mm), heaviest on Sat morning. Very mild (max 17°C on Thu afternoon, min 13°C on Fri night). Winds decreasing (fresh winds from the SSW on Thu afternoon, light winds from the SSW by Fri afternoon).

Thu
10
Friday
11
Saturday
12
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.9
SW
7
1.6
SW
7
1.3
SW
7
1.2
WSW
6
0.9
SW
6
0.8
SW
6
0.6
SW
6
0.6
SW
6
0.5
SW
6
0.4
SW
6
0.4
SW
6
0.6
SW
3
1.1
SW
5
1.5
SW
6
1.7
SW
6
1.8
SW
7
1.9
SW
7
1.7
SW
7
1.4
SW
7
Wave Graph
Metric surfscale
Energy kJ
321
247
149
113
68
47
33
27
20
14
14
9
56
141
217
289
321
255
178
Wind (km/h)
35
SSW
25
SW
20
WSW
20
W
10
W
15
WNW
15
NW
15
WNW
10
WNW
5
SSW
15
S
20
SSW
30
SSW
30
SSW
30
SSW
30
SSW
30
SW
25
SW
20
SW
Wind State
on
on
cross-on
cross-on
cross-on
cross
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
on
on
on
High Tide
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
rain showers
light rain
light rain
clear
clear
cloud
cloud
part cloud
clear
clear
clear
part cloud
cloud
light rain
light rain
light rain
cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:43
6:45
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:45
7:44
7:40
 mm
2
1
1
1
2
3
Temp °C
16
17
17
15
15
14
14
14
14
14
13
13
14
15
16
16
16
17
17
Feels °C
11
14
14
12
14
12
12
12
12
13
10
9
8
10
11
12
13
15
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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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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