Llanddwyn Island Surf Break

Lat Long: 53.13° N 4.42° W

Llanddwyn Island 48 hour detailed Surf Forecast

Issued: 6 pm 21 Aug 2026 (local time)

Forecast update in  hr  min

Today's Llanddwyn Island sea temperature is
18.7° C
3.0° 

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 (21 Aug):

  • Afternoon surf: Afternoon surf (21 Aug, local time) - 0.5ft (0.1m), 13s period with W swell.
  • Evening surf: Evening surf (21 Aug, local time) - 0.5ft (0.1m), 13s period with SW swell.

The current surf forecast for Llanddwyn Island at 11PM is: 0.1m 13s primary swell from a Southwest direction and 0.1m 6s secondary swell from a Southwest direction (forecast issued at 06:00pm August 21). An open ocean swell of 0.4m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (BST) & DateWave HeightWave Period
Morning (21 Aug)--
Afternoon (21 Aug)0.5ft (0.1m)13s
Evening (21 Aug)0.5ft (0.1m)13s

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


Short Range Forecast

Mostly dry. Warm (max 21°C on Mon morning, min 12°C on Fri night). Wind will be generally light.

Fri
21
Saturday
22
Sunday
23
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)
0.1
W
13
0.1
SW
13
0.1
W
16
0.1
W
16
0.1
W
16
0.1
SW
13
0.1
SW
15
0.4
NW
5
0.1
SW
15
0.1
SW
15
0.1
SW
15
0.1
SW
15
0.1
SW
15
0.1
SW
14
0.1
SW
14
0.1
SW
14
0.1
SW
14
0.1
SW
13
0.2
WSW
12
Wave Graph
Metric surfscale
Energy kJ
3
7
7
7
7
7
8
8
8
8
8
8
8
8
8
7
7
7
15
Wind (km/h)
20
N
20
N
15
N
10
N
10
NNW
10
NNW
10
NNW
20
NW
20
NNW
15
N
10
NNE
10
NNE
5
NNE
5
NNE
10
N
15
NNW
15
N
15
NNE
15
NE
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross-off
off
off
off
glassy
cross-off
cross-off
cross-off
cross-off
off
High Tide
4:46PM2.83m
5:38AM2.76m
6:19PM2.84m
7:04AM2.82m
7:32PM3.02m
Low Tide
11:34PM1.55m
12:20PM1.61m
1:12AM1.48m
1:41PM1.46m
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:32
8:30
8:28
 mm
Temp °C
17
15
14
13
12
12
13
14
15
15
13
13
13
12
14
16
17
16
15
Feels °C
13
11
12
11
10
10
11
10
11
12
11
11
12
11
13
13
15
13
12
  • 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 

FREE! Surf-Forecast.com widget for your website

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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