Llanddwyn Island surfForecast / Wales – Anglesy / UK

information circle48hr Weather and Surf, issued 12 pm Sunday 31 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
14.4° C
(Which is 2.8°C warmer than normal for this time of year)

How big are the waves at Llanddwyn Island today (31 May):

  • Morning surf: Morning surf (31 May, local time) - 1.5ft (0.4m), 12s period with SW swell.
  • Afternoon surf: Afternoon surf (31 May, local time) - 2ft (0.6m), 12s period with WSW swell.
  • Evening surf: Evening surf (31 May, local time) - 1.5ft (0.4m), 11s period with SW swell.

The current surf forecast for Llanddwyn Island at 5PM is: 0.4m 12s primary swell from a Southwest direction and 0.6m 5s secondary swell from a Southwest direction (forecast issued at 12:00pm May 31). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (31 May)1.5ft (0.4m)12s
Afternoon (31 May)2ft (0.6m)12s
Evening (31 May)1.5ft (0.4m)11s

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 17mm), heaviest on Mon afternoon. Very mild (max 15°C on Sun afternoon, min 12°C on Tue night). Winds increasing (light winds from the SW on Mon night, fresh winds from the S by Tue night).

Sun
31
Monday
1
Tuesday
2
Wed
3
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
1 AM
4 AM
7 AM
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 MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.4
SW
12
0.6
WSW
12
0.4
SW
12
0.4
SW
11
0.4
SW
11
1.1
SW
5
1.1
SW
5
1.1
SSW
5
1.2
SSW
5
1.2
SSW
5
1.3
SW
6
1.2
SW
6
1.1
SW
6
0.9
SW
6
0.8
SW
6
0.7
SW
6
0.6
SW
6
0.6
SW
6
0.6
SW
6
0.7
SW
6
0.6
SW
9
0.9
SW
9
0.9
SW
8
1.3
SW
5
Wave Graph
Metric surfscale
Energy kJ
36
90
35
33
33
58
69
61
72
75
97
92
72
56
44
32
29
23
23
38
65
115
118
71
Wind (km/h)
15
W
15
SW
20
SSW
20
S
20
S
25
S
25
S
25
S
20
S
20
S
25
S
20
S
20
S
15
SSW
5
SW
10
W
10
WNW
15
WNW
15
WSW
15
SSW
10
WSW
15
WSW
20
SSW
35
S
cross-on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross
cross-on
on
cross-on
cross-on
on
cross-on
cross-on
High Tide
10:03AM3.65m
10:18PM3.78m
10:40AM3.62m
10:54PM3.79m
11:17AM3.55m
11:31PM3.75m
Low Tide
4:50PM0.60m
5:12AM0.49m
5:25PM0.63m
5:48AM0.50m
6:00PM0.69m
6:26AM0.57m
cloud
cloud
part cloud
part cloud
cloud
part cloud
light rain
light rain
light rain
light rain
mod rain
light rain
light rain
cloud
light rain
part cloud
cloud
clear
clear
clear
clear
part cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:58
4:58
4:56
4:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:31
9:32
9:34
9:35
1
1
3
3
6
1
1
1
Temp °C
14
14
15
14
13
13
13
13
13
14
14
14
13
13
13
13
13
14
15
15
14
13
12
12
11
11
12
11
10
9
9
9
10
11
10
11
10
11
13
12
11
12
13
13
12
11
9
6
Swell 1
Height (m)
Direction
Period (s)
0.6
SW
5
0.4
SW
12
0.4
SW
12
0.4
SW
11
0.4
SW
11
0.3
WSW
11
0.3
WSW
11
0.2
WSW
11
0.2
WSW
11
0.2
WSW
11
0.2
WSW
10
0.1
SW
10
0.1
SW
10
0.1
SW
10
0.8
SW
6
0.7
SW
6
0.6
SW
6
0.6
SW
6
0.2
WNW
3
0.6
SW
9
0.1
W
16
0.2
WNW
4
0.1
NW
4
Energy kJ
19
35
35
33
33
25
24
12
12
11
11
4
4
4
44
32
29
23
1
65
5
1
1
Swell 2
Height (m)
Direction
Period (s)
0.4
SW
12
0.6
WSW
12
0.1
SW
14
0.1
SW
14
0.1
SW
14
0.1
SW
14
0.1
SW
14
0.1
SW
14
0.1
SW
14
0.1
SW
13
0.1
W
13
0.1
W
13
0.1
W
13
0.1
SW
13
Energy kJ
36
90
8
8
8
8
8
8
8
7
3
3
3
7
Swell 3
Height (m)
Direction
Period (s)
0.1
W
14
0.1
W
14
0.1
W
10
0.1
SW
13
0.1
SW
13
0.1
SW
13
0.1
W
13
Energy kJ
4
4
2
7
7
7
3
Wind waves
Height (m)
Direction
Period (s)
0.6
SW
6
0.6
SW
6
0.6
SW
4
0.8
SW
5
1.1
SW
5
1.1
SW
5
1.1
SSW
5
1.2
SSW
5
1.2
SSW
5
1.3
SW
6
1.2
SW
6
1.1
SW
6
0.9
SW
6
0.2
WNW
3
0.6
SW
6
0.7
SW
6
0.9
SW
9
0.9
SW
8
1.3
SW
5
Energy kJ
24
20
12
31
58
69
61
72
75
97
92
72
56
1
23
38
115
118
71
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
2
1
1
1
2
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
2
Distance (km)
35
310
310
269
95
95
95
187
216
216
308
313
164
144
35
35
35
284
284
284
35
35
270
311
Best forecast wave conditions in Anglesy
Rating
(10 max)
Best forecast wave conditions in United Kingdom
Rating
(10 max)
2
2
2
3
2
2
2
2
2
2
2
2
2
2
2
2
2
2
1
1
2
1
2
2
Header Global
Rating
(10 max)
6
6
6
5
5
5
5
5
5
4
5
5
5
5
5
5
5
4
4
4
5
4
4
4
  • 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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