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Surf Forecasts:

Llanddwyn Island surfForecast / Wales – Anglesy / UK

information circle48hr Weather and Surf, issued 5 pm Friday 21 Nov 2025 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
12.1° C
 (Which is slightly warmer than usual)

How big are the waves at Llanddwyn Island today?

The current surf forecast for Llanddwyn Island at 1AM is: 1.9m 6s primary swell from a Southwest direction (forecast issued at 05:00pm November 21). The wind direction is predicted to be cross-onshore.

Time (GMT) & DateWave HeightWave Period
Morning (22 Nov)4.5ft (1.4m)7s
Afternoon (22 Nov)3ft (0.9m)7s
Evening (22 Nov)2.5ft (0.8m)7s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Friday
21
Saturday
22
Sunday
23
Monday
24
3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM
Rating
(10 max)
0
0
0
0
0
0
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.1
W
0.9
SW
1.3
SW
1.7
SW
2.2
SW
1.6
SW
1.4
SW
0.9
SW
0.9
SW
0.9
SW
0.8
SW
1.2
SW
2.1
SW
2
WSW
2.2
WSW
2.4
WSW
3
W
3
W
2.5
W
2.4
W
1.3
WSW
0.9
WSW
0.7
SW
0.5
SW
Period(s) (?)1545677777775777788878888
Wave
Graph
(?)Metric surfscale
Energy kJ (?)42170189427277188897569556336035042357411611163827603187986532
Wind
(km/h)
25
SW
30
SW
35
SSW
45
SSW
45
SSW
15
WNW
10
NW
15
WNW
10
SW
20
SW
20
SW
25
SSW
35
SW
35
W
35
W
40
WSW
45
WSW
55
W
50
W
35
WNW
30
NW
40
N
35
NNE
30
NNE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
onononcross-
on		cross-
on		crosscross-
off		cross-
on		onononononcross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		crosscross-
off		cross-
off		cross-
off
High Tide
/ height (m)
9:49PM
3.71
10:02AM
3.82
10:23PM
3.59
10:36AM
3.74
10:56PM
3.44
11:10AM
3.63
Low Tide
/ height (m)
4:19PM
0.43
4:33AM
0.59
4:55PM
0.49
5:08AM
0.69
5:33PM
0.61
5:45AM
0.82
Friday
21
Saturday
22
Sunday
23
Monday
24
Sunrise------7:52-------7:54-------7:56-
Sunset4:14-------4:13-------4:12-------
cloud
cloud
cloud
light rain
mod rain
light rain
part cloud
part cloud
part cloud
cloud
light rain
rain showers
light rain
rain showers
light rain
cloud
cloud
light rain
light rain
light rain
light rain
light rain
light rain
part cloud
Rain (mm)
---374----14341--112111-
Temp. °C77879109101099101198998888889
Feels °C (?)1-10-20667754541-1-1-2-3-301-102
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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View detailed surf forecast for Llanddwyn Island at:
surf-forecast.com

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