Llanddwyn Island surfForecast / Wales – Anglesy / UK

information circle48hr Weather and Surf, issued 12 am Wednesday 13 May 2026 BST
Forecast update in hr  min  s Forecast update imminent
Llanddwyn Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Llanddwyn Island sea temperature is
11.6° C
(Which is 1.4°C warmer than normal for this time of year)

How big are the waves at Llanddwyn Island today?

The current surf forecast for Llanddwyn Island at 7AM is: 1.9m 6s primary swell from a West-northwest direction (forecast issued at 12:00am May 13). The wind direction is predicted to be cross-shore.

Time (BST) & DateWave HeightWave Period
Morning (13 May)6ft (1.9m)6s
Afternoon (13 May)4.5ft (1.3m)6s
Evening (13 May)1.5ft (0.4m)7s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 11mm), heaviest on Tue night. Very mild (max 11°C on Tue night, min 8°C on Tue night). Winds decreasing (strong winds from the WNW on Tue night, light winds from the N by Thu night).

Wednesday
13
Thursday
14
Friday
15
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
1
0
0
0
0
0
0
0
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1.3
W
5
1.8
WNW
6
1.9
WNW
6
1.9
WNW
7
1.6
NW
6
1.3
NW
6
1.3
NW
5
0.1
W
16
1.8
NW
6
1.8
NW
7
1.6
NW
7
1.3
NW
6
1.3
NW
6
0.1
SW
14
0.1
SW
14
0.9
NW
6
0.6
NW
6
0.1
W
14
0.1
W
14
0.1
W
14
0.1
W
14
0.1
W
14
0.1
W
13
0.1
W
13
Wave Graph
Metric surfscale
Energy kJ
78
200
300
304
216
103
86
5
259
275
207
132
100
8
8
54
30
8
4
4
4
4
4
3
Wind (km/h)
35
W
40
WNW
40
WNW
40
NW
35
NW
30
NNW
25
NNW
35
NNW
40
NW
35
NNW
30
NNW
30
NNW
30
NNW
30
NNW
20
N
15
NNE
5
N
20
N
25
NNW
25
NNW
25
NNW
20
NNW
20
NNW
10
N
cross-on
cross-on
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
7:03AM3.52m
7:41PM3.46m
7:48AM3.79m
8:21PM3.75m
8:32AM4.03m
9:00PM4.00m
Low Tide
1:22AM1.11m
1:55PM0.61m
2:15AM0.82m
2:43PM0.34m
3:03AM0.52m
3:29PM0.12m
rain showers
light rain
light rain
light rain
rain showers
clear
rain showers
part cloud
part cloud
part cloud
light rain
light rain
light rain
light rain
rain showers
cloud
cloud
part cloud
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:22
5:20
5:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:05
9:07
9:08
1
1
1
1
1
1
1
1
1
1
1
Temp °C
9
8
8
8
10
11
10
9
8
8
8
9
9
10
10
8
8
8
8
9
10
10
10
8
1
-1
-1
-1
2
4
4
1
-1
0
1
2
2
3
5
4
5
3
2
3
4
4
5
4
Swell 1
Height (m)
Direction
Period (s)
0.1
SW
8
0.6
WSW
7
0.6
WSW
7
0.7
WSW
7
0.4
SW
7
0.2
WSW
6
0.1
SW
6
0.1
W
16
0.1
W
16
0.1
SW
15
0.1
SW
15
0.1
SW
6
0.1
SW
14
0.1
SW
5
0.6
NW
6
0.1
W
14
0.1
W
14
0.1
W
14
0.1
W
14
0.1
W
14
0.1
W
13
0.1
W
13
Energy kJ
3
29
32
43
12
4
2
5
5
9
8
1
8
1
30
4
4
4
4
4
4
3
Swell 2
Height (m)
Direction
Period (s)
0.1
W
17
0.1
W
16
0.1
W
16
0.1
W
16
0.1
W
16
0.1
W
16
0.1
SW
14
0.1
W
6
0.1
SW
14
0.1
SW
14
0.1
W
6
0.1
W
14
0.1
W
6
0.1
W
6
0.1
W
6
Energy kJ
5
5
5
5
5
5
8
1
8
8
1
4
1
1
1
Swell 3
Height (m)
Direction
Period (s)
0.1
SW
6
0.1
SW
14
0.1
W
14
Energy kJ
1
8
4
Wind waves
Height (m)
Direction
Period (s)
1.3
W
5
1.8
WNW
6
1.9
WNW
6
1.9
WNW
7
1.6
NW
6
1.3
NW
6
1.3
NW
5
1.3
NW
6
1.8
NW
6
1.8
NW
7
1.6
NW
7
1.3
NW
6
1.3
NW
6
1.1
NW
5
1
NW
5
0.9
NW
6
0.6
NNW
6
1
NW
6
1
NNW
6
0.9
NW
6
0.9
NW
5
0.7
NNW
5
0.4
NNW
5
Energy kJ
78
200
300
304
216
103
86
115
259
275
207
132
100
55
45
54
20
64
65
44
38
21
10
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
2
1
1
2
1
3
2
1
1
1
1
1
1
1
1
1
4
4
1
Distance (km)
278
287
294
600
924
887
736
608
608
328
597
1060
341
395
286
6
203
170
330
330
330
286
286
49
Best forecast wave conditions in Anglesy
Rating
(10 max)
1
Best forecast wave conditions in United Kingdom
Rating
(10 max)
4
1
2
2
4
1
1
3
1
1
1
1
1
1
4
4
4
Header Global
Rating
(10 max)
9
9
9
9
8
7
9
9
9
9
5
5
5
5
5
4
5
5
5
5
5
5
5
5
  • 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

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