Llanddwyn Island surfForecast / Wales – Anglesy / UK

information circle48hr Weather and Surf, issued 12 am 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
13.5° C
(Which is 1.9°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) - 1.5ft (0.4m), 12s period with SW 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 4AM is: 0.3m 12s primary swell from a West-southwest direction and 0.8m 5s secondary swell from a Southwest direction (forecast issued at 12:00am May 31). The wind direction is predicted to be onshore.

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

Heavy rain (total 30mm), heaviest during Mon afternoon. Very mild (max 15°C on Sun afternoon, min 13°C on Sat night). Wind will be generally light.

Sunday
31
Monday
1
Tuesday
2
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
0
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)
0.8
SW
4
0.8
SW
5
0.4
SW
12
0.4
SW
12
0.4
SW
12
0.4
SW
12
0.4
SW
11
0.4
SW
11
0.9
SW
5
1.1
SW
5
1.1
SSW
5
1.2
SSW
5
1.2
SSW
5
1
SSW
5
1.3
SSW
5
1.1
SW
6
1.1
SW
6
1
SW
5
1
SW
6
0.7
SW
6
0.8
SW
6
0.7
SW
7
0.7
SW
7
0.8
SW
7
Wave Graph
Metric surfscale
Energy kJ
24
29
37
36
35
35
33
33
42
60
59
69
72
54
97
72
69
54
67
33
51
45
49
59
Wind (km/h)
20
SSW
15
SW
10
WSW
15
W
15
SW
20
SSW
20
S
20
S
20
S
20
S
25
S
20
S
20
S
25
S
20
S
20
SSW
20
SSW
10
SW
10
WSW
10
WSW
15
W
15
SW
15
SW
15
W
cross-on
on
cross-on
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
on
cross-on
cross-on
on
on
cross-on
High Tide
10:03AM3.65m
10:18PM3.78m
10:40AM3.62m
10:54PM3.79m
11:17AM3.55m
Low Tide
4:35AM0.52m
4:50PM0.60m
5:12AM0.49m
5:25PM0.63m
5:48AM0.50m
6:00PM0.69m
light rain
rain showers
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
light rain
light rain
light rain
light rain
mod rain
light rain
light rain
light rain
part cloud
cloud
rain showers
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:58
4:58
4:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:31
9:32
9:34
1
1
2
4
4
4
7
4
1
1
1
Temp °C
13
14
13
13
14
15
14
13
13
13
13
13
13
14
14
14
13
13
13
13
14
15
15
14
10
12
12
11
11
12
11
10
9
9
9
10
10
11
11
12
10
12
12
11
12
12
12
11
Swell 1
Height (m)
Direction
Period (s)
0.2
WSW
12
0.3
WSW
12
0.6
SW
5
0.6
SW
5
0.6
SW
6
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
11
0.2
WSW
10
0.1
SW
10
0.1
W
10
0.1
SW
13
0.6
SW
5
0.7
SW
6
0.8
SW
6
0.2
WNW
4
0.7
SW
7
0.8
SW
7
Energy kJ
15
29
18
20
20
35
33
33
25
24
12
12
11
11
10
4
2
7
18
33
51
1
49
59
Swell 2
Height (m)
Direction
Period (s)
0.1
SW
7
0.4
SW
12
0.4
SW
12
0.4
SW
12
0.1
SW
7
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
W
10
0.5
SW
6
0.1
SW
13
0.1
W
13
0.1
W
13
0.2
WNW
4
Energy kJ
2
37
36
35
2
23
8
8
8
8
8
8
8
2
19
7
3
3
1
Swell 3
Height (m)
Direction
Period (s)
0.1
W
14
0.1
W
13
Energy kJ
4
3
Wind waves
Height (m)
Direction
Period (s)
0.8
SW
4
0.8
SW
5
0.6
SW
6
0.5
SW
5
0.8
SW
5
0.9
SW
5
1.1
SW
5
1.1
SSW
5
1.2
SSW
5
1.2
SSW
5
1
SSW
5
1.3
SSW
5
1.1
SW
6
1.1
SW
6
1
SW
5
1
SW
6
0.7
SW
7
0.2
NNW
4
Energy kJ
24
25
20
14
26
42
60
59
69
72
54
97
72
69
54
67
45
1
Nearest Offshore or Glassy
Rating
(10 max)
1
2
2
1
1
1
2
1
1
1
1
2
1
1
1
1
1
1
2
1
1
1
1
1
Distance (km)
95
159
167
35
35
310
269
95
95
62
216
187
216
216
239
281
164
108
222
35
35
284
284
35
Best forecast wave conditions in Anglesy
Rating
(10 max)
Best forecast wave conditions in United Kingdom
Rating
(10 max)
3
3
2
3
2
2
3
2
3
2
2
2
2
2
2
2
2
2
2
2
1
1
1
2
Header Global
Rating
(10 max)
7
7
7
7
6
5
5
5
5
5
5
5
4
5
9
5
5
5
8
5
6
4
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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