Llanddwyn Island Surf Break

Lat Long: 53.13° N 4.42° W

Llanddwyn Island 48 hour detailed Surf Forecast

Issued: 6 am 13 Sep 2026 (local time)

Forecast update in  hr  min

Today's Llanddwyn Island sea temperature is
17.1°C
1.8° 

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 (13 Sep):

  • Morning surf: Morning surf (13 Sep, local time) - 2ft (0.6m), 6s period with SW swell.
  • Afternoon surf: Afternoon surf (13 Sep, local time) - 1.5ft (0.5m), 6s period with SW swell.
  • Evening surf: Evening surf (13 Sep, local time) - 1.5ft (0.4m), 6s period with SW swell.

The current surf forecast for Llanddwyn Island at 12PM is: 0.6m 6s primary swell from a Southwest direction (forecast issued at 06:00am September 13). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (13 Sep)2ft (0.6m)6s
Afternoon (13 Sep)1.5ft (0.5m)6s
Evening (13 Sep)1.5ft (0.4m)6s

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


Short Range Forecast

Light rain (total 8mm), mostly falling on Mon night. Very mild (max 17°C on Sun morning, min 13°C on Tue night). Winds increasing (light winds from the WNW on Sun morning, fresh winds from the SSW by Mon night).

Sunday
13
Monday
14
Tuesday
15
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
7
0.7
SW
6
0.6
SW
6
0.6
SW
6
0.5
SW
6
0.4
SW
6
0.4
SW
6
0.6
SW
6
0.7
SW
4
0.7
SW
5
0.7
SW
5
0.8
SW
4
1
SW
5
1.3
SW
5
1.6
SW
6
1.7
SW
6
1.6
SW
6
1.2
SW
6
1.1
WSW
6
1.2
WSW
5
1
W
5
0.8
WSW
5
0.9
NW
4
Wave Graph
Metric surfscale
Energy kJ
52
39
24
23
18
13
13
28
17
22
23
22
41
94
161
210
184
112
88
75
52
31
24
Wind (km/h)
5
WSW
5
SW
10
WNW
10
W
10
SW
10
S
15
SSE
15
SSW
20
SSW
20
SSW
15
SSW
25
SSW
30
SSW
30
S
30
SSW
30
SW
25
SW
15
W
25
W
25
W
20
W
20
WNW
20
NW
Wind State
on
glassy
cross
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross
cross
High Tide
11:16AM4.11m
11:30PM4.39m
11:50AM4.02m
00:07AM4.16m
12:24PM3.85m
Low Tide
5:59PM0.01m
6:23AM-0.01m
6:35PM0.19m
6:58AM0.30m
7:12PM0.44m
part cloud
cloud
clear
part cloud
part cloud
part cloud
part cloud
cloud
cloud
part cloud
cloud
clear
clear
part cloud
light rain
light rain
rain showers
rain showers
part cloud
cloud
rain showers
rain showers
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:46
6:48
6:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:38
7:37
7:34
 mm
1
3
1
1
1
1
Temp °C
17
17
17
17
17
17
16
16
15
16
17
16
17
17
17
17
16
15
14
14
15
16
14
Feels °C
18
18
17
17
17
17
15
15
13
15
16
12
13
14
13
13
13
13
9
9
11
12
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
How to use the Wavefinder 

Eyeball surf reportRecent Eyeball Surf Reports for Wales - Anglesy

  1. West Coast Surf: ‘Porth Neigwl: Choppy waves hadn't tidied much (from what I could see in the dark.’

    Hells Mouth (Porth Neigwl), 37 km away
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