Llanddwyn Island Surf Break

Lat Long: 53.13° N 4.42° W

Llanddwyn Island 48 hour detailed Surf Forecast

Issued: 6 am 31 Aug 2026 (local time)

Forecast update in  hr  min

Today's Llanddwyn Island sea temperature is
18.0°C
2.4° 

Llanddwyn Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


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

  • Morning surf: Morning surf (31 Aug, local time) - 2.5ft (0.8m), 8s period with SW swell.
  • Afternoon surf: Afternoon surf (31 Aug, local time) - 2.5ft (0.7m), 8s period with SW swell.
  • Evening surf: Evening surf (31 Aug, local time) - 2ft (0.6m), 8s period with SW swell.

The current surf forecast for Llanddwyn Island at 11AM is: 0.8m 8s primary swell from a Southwest direction and 1.2m 5s secondary swell from a West-northwest direction (forecast issued at 06:00am August 31). The wind direction is predicted to be cross-shore.

Time (BST) & DateWave HeightWave Period
Morning (31 Aug)2.5ft (0.8m)8s
Afternoon (31 Aug)2.5ft (0.7m)8s
Evening (31 Aug)2ft (0.6m)8s

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


Short Range Forecast

Moderate rain (total 10mm), heaviest on Wed morning. Very mild (max 18°C on Wed afternoon, min 14°C on Mon morning). Mainly fresh winds.

Monday
31
Tuesday
1
Wednesday
2
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
SW
8
0.9
SW
8
0.8
SW
8
0.7
SW
8
0.7
SW
8
0.6
SW
8
0.5
SW
8
0.5
SW
8
0.6
WSW
7
0.6
SW
7
0.7
SW
4
0.9
SW
4
1.1
SW
5
1.1
SW
5
1
SW
5
0.8
SW
5
0.6
SW
5
0.8
SW
5
1.2
SSW
5
1.5
SSW
6
1.4
SW
6
1.5
SW
6
1.4
SW
6
Wave Graph
Metric surfscale
Energy kJ
88
95
80
69
72
57
31
28
36
30
13
29
49
65
53
31
18
25
64
148
147
161
161
Wind (km/h)
20
W
25
NW
30
NW
25
WNW
20
W
15
W
15
WSW
15
WSW
15
SW
15
SSW
25
SW
25
SW
25
SW
25
SW
10
WSW
15
SSW
10
SSW
20
SSW
20
SSE
30
SSW
30
SSW
25
SSW
25
SSW
Wind State
cross-on
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
on
on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
on
High Tide
11:49AM3.93m
00:03AM4.23m
12:23PM3.87m
00:40AM4.07m
1:01PM3.73m
Low Tide
6:27AM0.05m
6:37PM0.27m
7:03AM0.19m
7:16PM0.42m
7:43AM0.43m
7:59PM0.63m
rain showers
rain showers
part cloud
part cloud
cloud
cloud
clear
clear
clear
part cloud
clear
part cloud
cloud
light rain
light rain
light rain
cloud
cloud
light rain
light rain
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:24
6:26
6:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:09
8:07
8:05
 mm
1
1
1
2
1
3
3
Temp °C
14
15
14
15
16
16
16
15
15
15
16
16
17
17
16
16
16
16
15
17
18
17
17
Feels °C
11
11
9
10
12
13
13
13
12
12
12
12
13
14
15
15
15
14
12
13
14
14
14
  • 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
How to use the Wavefinder 

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