Trearddur Bay (Holy Island) surfForecast / Wales – Anglesy / UK

information circle48hr Weather and Surf, issued 6 am Wednesday 22 Apr 2026 BST
Forecast update in hr  min  s Forecast update imminent
Trearddur Bay (Holy Island) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Trearddur Bay (Holy Island) sea temperature is
10.0° C
(Which is 1.1°C warmer than normal for this time of year)

How big are the waves at Trearddur Bay (Holy Island) today?

The current surf forecast for Trearddur Bay (Holy Island) at 2PM is: 0.1m 16s primary swell from a South direction and 0.2m 4s secondary swell from a South-southeast direction (forecast issued at 06:00am April 22). An open ocean swell of 0.8m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (BST) & DateWave HeightWave Period
Morning (22 Apr)0.5ft (0.2m)4s
Afternoon (22 Apr)0.5ft (0.1m)16s
Evening (22 Apr)0.5ft (0.1m)12s

Table - waves today at Trearddur Bay (Holy Island). (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Very mild (max 16°C on Thu afternoon, min 8°C on Wed morning). Winds decreasing (fresh winds from the E on Wed morning, calm by Fri night).

Wednesday
22
Thursday
23
Friday
24
Sat
25
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
1 AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
0
1
1
1
Swell
Height Map
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
Wave
Height (m)
Direction
Period (s)
0.1
W
9
0.9
ENE
4
0.2
SSE
4
0.1
S
16
0.1
S
16
0.1
S
12
0.1
S
12
0.1
S
10
0.1
S
9
0.3
SSE
4
0.3
SSE
5
0.2
S
6
0.3
SW
11
0.5
SW
10
0.5
SW
10
0.6
SW
10
0.6
SW
10
0.7
SW
9
0.8
SW
12
0.8
SW
11
0.8
SW
11
0.8
SW
11
0.7
SW
11
0.6
SW
11
Wave Graph
Metric surfscale
Energy kJ
2
0
2
5
5
3
3
2
2
4
4
4
18
50
47
76
73
90
161
147
142
142
119
94
Wind (km/h)
35
ENE
30
E
30
E
30
E
25
E
25
E
20
E
20
E
20
E
20
E
15
ENE
10
E
5
NW
5
NE
10
ESE
10
E
10
ESE
5
ESE
5
SE
5
NNW
10
NW
10
NNW
5
NNE
5
ENE
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
glassy
off
cross-off
cross-off
cross-off
cross-off
glassy
cross-off
cross
cross-off
off
glassy
High Tide
2:12AM5.29m
2:50PM5.09m
3:10AM5.02m
3:58PM4.74m
4:22AM4.78m
5:21PM4.51m
Low Tide
8:32AM0.99m
8:55PM1.50m
9:36AM1.31m
10:01PM1.87m
10:52AM1.54m
11:22PM2.07m
clear
clear
clear
part cloud
part cloud
cloud
cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:03
6:01
6:00
5:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:30
8:31
8:34
8:35
Temp °C
6
6
8
12
14
13
11
10
10
11
11
14
15
16
15
14
13
12
12
14
14
14
14
14
-3
-2
1
5
8
7
6
5
5
6
7
11
13
14
12
12
11
10
11
12
11
11
11
12
Swell 1
Height (m)
Direction
Period (s)
0.2
SSE
4
0.2
SSE
4
0.1
S
16
0.1
S
12
0.1
S
12
0.2
SSE
4
0.2
SSE
4
0.3
SSE
4
0.3
SSE
5
0.4
NE
5
0.3
NE
5
0.5
SW
10
0.5
SW
10
0.6
SW
10
0.6
SW
10
0.7
SW
9
0.8
SW
12
0.8
SW
11
0.8
SW
11
0.8
SW
11
0.7
SW
11
0.6
SW
11
Energy kJ
2
2
5
3
3
2
2
4
4
6
3
50
47
76
73
90
161
147
142
142
119
94
Swell 2
Height (m)
Direction
Period (s)
0.1
S
12
0.1
S
10
0.1
S
9
0.1
S
6
0.3
NE
5
0.3
SSE
4
0.3
SW
11
0.3
NE
5
0.3
NE
4
0.2
NNE
4
0.2
S
4
0.1
NE
4
0.1
NE
4
0.2
SSE
3
Energy kJ
3
2
2
1
4
4
18
3
3
1
1
1
1
1
Swell 3
Height (m)
Direction
Period (s)
0.1
W
9
0.1
S
16
0.1
S
16
0.1
S
12
0.1
S
10
0.1
S
6
0.1
S
9
0.2
S
6
0.2
S
6
0.2
S
4
0.2
S
4
0.1
NE
4
Energy kJ
2
5
5
3
2
1
2
3
3
1
1
1
Wind waves
Height (m)
Direction
Period (s)
1
ENE
4
0.9
ENE
4
0.8
ENE
6
0.8
ENE
6
0.7
NE
5
0.6
ENE
5
0.6
E
4
0.4
ENE
5
0.4
ENE
5
0.4
ENE
5
0.2
SSE
4
0.4
SE
4
0.3
SE
4
0.3
SE
4
0.3
SE
3
0.3
SE
3
Energy kJ
29
21
36
39
30
20
14
9
9
9
1
3
2
2
2
2
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
276
287
386
386
527
527
565
589
383
382
841
536
51
8
8
0
0
0
0
0
51
0
0
0
Best forecast wave conditions in Anglesy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
Best forecast wave conditions in United Kingdom
Rating
(10 max)
2
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
2
2
2
2
Header Global
Rating
(10 max)
9
7
8
7
9
9
8
9
7
6
5
5
5
5
5
5
5
5
5
5
5
5
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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