Llanddwyn Island surfForecast / Wales – Anglesy / UK

information circle48hr Weather and Surf, issued 11 am Wednesday 07 Jan 2026 GMT
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
8.3° C
(Which is slightly cooler than normal)


How big are the waves at Llanddwyn Island today?

The current surf forecast for Llanddwyn Island at 2PM is: 1.2m 6s primary swell from a West-northwest direction and 0.4m 6s secondary swell from a Southwest direction (forecast issued at 11:00am January 07). The wind direction is predicted to be cross-shore.

Time (GMT) & DateWave HeightWave Period
Morning (07 Jan)6ft (1.9m)7s
Afternoon (07 Jan)3.5ft (1.0m)5s
Evening (07 Jan)1ft (0.3m)6s

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

Updates in  hr  min  s Forecast update imminent
Wednesday
07
Thursday
08
Friday
09
Saturday
10
9AM12PM3PM6PM9PM0AM3AM6AM9AM12PM3PM6PM9PM0AM3AM6AM9AM12PM3PM6PM9PM0AM3AM6AM
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
1
Swell
Height Map
Wave Height (m) & direction (?)
1.9
NW
1.4
NW
1
WNW
0.4
SW
0.3
SW
0.8
WNW
1.4
WNW
1.3
W
0.7
SW
0.6
WSW
0.5
SW
0.4
SW
0.3
SW
0.4
SW
0.8
SW
0.9
SW
0.6
WSW
1.3
NW
1.4
NW
0.7
WSW
0.7
SW
0.7
WSW
0.6
WSW
0.6
WSW
Period(s) (?)765764566577711101111661212121212
Wave
Graph
(?)Metric surfscale
Energy kJ (?)35515758146181091063619221673012916983971281281491299190
Wind
(km/h)
35
NW
30
NW
20
WNW
10
WSW
10
SSW
35
WNW
30
WNW
20
NW
10
W
5
ESE
10
ENE
30
NE
35
NNE
30
N
35
NNW
25
N
20
N
25
NNW
30
NW
30
NW
25
NW
25
NW
20
NW
15
NNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscrosscross-
on
cross-
on
cross-
on
cross-
on
crosscrosscross-
on
glasscross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
crosscrosscross-
off
crosscrosscross-
off
High Tide
/ height (m)
11:46AM
4.28
12:19AM
3.58
12:32PM
4.06
1:07AM
3.38
1:21PM
3.78
1:58AM
3.18
Low Tide
/ height (m)
6:46PM
0.06
6:54AM
0.52
7:31PM
0.34
7:38AM
0.79
8:16PM
0.66
Wednesday
07
Thursday
08
Friday
09
Saturday
10
Sunrise8:29-------8:29-------8:27-------
Sunset--4:16-------4:19-------4:20-----
part cloud
part cloud
cloud
cloud
light rain
light rain
cloud
cloud
cloud
cloud
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
rain showers
clear
clear
clear
clear
Rain (mm)
----11----1243211111----
Temp. °C666547766653334446666555
Feels °C (?)-3-2021-101332-4-5-5-4-2-2-1-2-2-1-2-10
  • 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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