Llanddwyn Island surfForecast / Wales – Anglesy / UK

information circle48hr Weather and Surf, issued 6 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):

  • 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 11PM is: 1.0m 5s primary swell from a Southwest direction and 0.4m 11s secondary swell from a Southwest direction (forecast issued at 06:00pm May 31). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (31 May)--
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 18mm), heaviest on Mon morning. Very mild (max 15°C on Sun afternoon, min 12°C on Sun night). Winds increasing (light winds from the WSW on Mon night, fresh winds from the SW by Wed morning).

Sun
31
Monday
1
Tuesday
2
Wed
3
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
10 AM
1 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 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
0.4
SW
11
0.9
SW
5
1.1
SW
5
1.1
SW
5
1.3
SSW
5
1.2
SW
6
1.1
SW
5
1.3
SSW
5
1.3
SW
6
1.1
SW
6
1.1
SW
6
0.8
SW
6
0.7
SW
6
0.6
SW
6
0.6
SW
6
0.6
SW
6
0.6
SW
6
0.7
SW
9
0.8
WSW
9
0.9
WSW
8
1.1
SW
4
1.7
SSW
6
1.8
SW
7
Wave Graph
Metric surfscale
Energy kJ
35
33
40
58
60
83
88
72
94
104
86
72
44
35
30
24
24
26
84
101
112
37
170
267
Wind (km/h)
20
SSW
20
SSW
20
S
25
S
25
S
25
S
25
S
20
S
25
S
20
S
20
SSW
20
S
10
SSW
5
WSW
10
WNW
15
WNW
20
W
10
SSW
10
SSW
15
WSW
15
SSW
25
SSW
35
S
35
SW
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-on
cross-on
cross-on
on
on
cross-on
on
cross-on
cross-on
on
High Tide
10:18PM3.78m
10:40AM3.62m
10:54PM3.79m
11:17AM3.55m
11:31PM3.75m
11:54AM3.43m
Low Tide
4:50PM0.60m
5:12AM0.49m
5:25PM0.63m
5:48AM0.50m
6:00PM0.69m
6:26AM0.57m
cloud
part cloud
part cloud
cloud
cloud
light rain
light rain
light rain
light rain
light rain
light rain
cloud
light rain
light rain
cloud
cloud
clear
clear
clear
clear
cloud
light rain
light rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
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
2
2
4
3
1
1
1
1
1
1
1
Temp °C
15
14
13
12
13
13
13
14
14
14
14
13
13
13
13
14
15
15
14
13
12
12
12
14
12
11
10
8
9
9
9
11
11
11
12
10
12
12
11
12
12
13
12
11
9
7
6
8
Swell 1
Height (m)
Direction
Period (s)
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
0.1
SW
13
0.7
SW
6
0.6
SW
6
0.6
SW
6
0.2
WSW
10
0.7
SW
9
0.8
WSW
9
0.3
NW
4
0.3
NW
4
Energy kJ
35
33
33
25
24
12
12
11
11
4
4
4
7
35
30
24
10
84
101
2
2
Swell 2
Height (m)
Direction
Period (s)
0.3
WSW
11
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
14
0.1
SW
13
0.1
W
13
0.1
W
13
0.1
W
13
0.1
W
16
Energy kJ
23
8
8
8
8
8
8
8
7
7
3
3
3
5
Swell 3
Height (m)
Direction
Period (s)
0.1
W
10
Energy kJ
2
Wind waves
Height (m)
Direction
Period (s)
0.6
SW
6
0.7
SW
4
0.9
SW
5
1.1
SW
5
1.1
SW
5
1.3
SSW
5
1.2
SW
6
1.1
SW
5
1.3
SSW
5
1.3
SW
6
1.1
SW
6
1.1
SW
6
0.8
SW
6
0.6
SW
6
0.6
SW
6
0.7
WSW
4
0.5
WSW
4
0.9
WSW
8
1.1
SW
4
1.7
SSW
6
1.8
SW
7
Energy kJ
25
15
40
58
60
83
88
72
94
104
86
72
44
24
26
16
10
112
37
170
267
Nearest Offshore or Glassy
Rating
(10 max)
1
2
1
1
1
1
1
1
1
1
1
2
1
1
1
1
3
1
1
1
1
1
2
1
Distance (km)
310
269
95
95
216
216
216
216
239
275
216
164
106
35
35
35
284
35
35
35
95
279
295
267
Best forecast wave conditions in Anglesy
Rating
(10 max)
Best forecast wave conditions in United Kingdom
Rating
(10 max)
2
3
2
2
2
2
2
2
2
2
2
2
2
2
2
2
1
1
2
2
2
2
3
3
Header Global
Rating
(10 max)
6
5
5
5
5
5
5
4
5
5
5
8
5
4
6
4
5
4
5
5
5
4
4
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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