Trearddur Bay (Holy Island) Surf Break

Trearddur Bay (Holy Island) 48 hour detailed Surf Forecast

Lat Long: 53.28° N 4.62° W

Issued: 12 pm 29 Jun 2026 (local time)

Forecast update in  hr  min

Today's Trearddur Bay (Holy Island) sea temperature is
15.2° C

1.4°C warmer than normal for this time of year

Trearddur Bay (Holy 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 Trearddur Bay (Holy Island) today (29 Jun):

  • Morning surf: Morning surf (29 Jun, local time) - 3.5ft (1.0m), 7s period with SW swell.
  • Afternoon surf: Afternoon surf (29 Jun, local time) - 2.5ft (0.8m), 7s period with SSW swell.
  • Evening surf: Evening surf (29 Jun, local time) - 3ft (0.9m), 5s period with SSW swell.

The current surf forecast for Trearddur Bay (Holy Island) at 4PM is: 0.9m 7s primary swell from a South-southwest direction and 0.1m 13s secondary swell from a Southwest direction (forecast issued at 12:00pm June 29). The wind direction is predicted to be cross-onshore.

Time (BST) & DateWave HeightWave Period
Morning (29 Jun)3.5ft (1.0m)7s
Afternoon (29 Jun)2.5ft (0.8m)7s
Evening (29 Jun)3ft (0.9m)5s

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

Light rain (total 2mm), mostly falling on Tue morning. Very mild (max 17°C on Tue night, min 13°C on Mon morning). Winds increasing (light winds from the SW on Tue night, strong winds from the SSW by Wed night).

Mon
29
Tuesday
30
Wednesday
1
Thu
2
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
4 AM
7 AM
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
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)
1
SW
7
0.8
SSW
7
0.9
SSW
7
1
SSW
5
0.9
SSW
5
0.9
SSW
5
1
SSW
4
1
SSW
5
1.4
SSW
5
1.4
SSW
6
1.3
SSW
6
1.2
SSW
6
1
SW
6
0.8
SSW
6
0.6
SSW
6
0.5
SW
6
0.5
SW
6
0.4
SW
6
0.4
SW
6
0.8
SSW
4
1.3
SSW
5
1.7
SW
6
1.9
SW
6
1.4
SW
6
Wave Graph
Metric surfscale
Energy kJ
89
59
70
44
44
39
39
49
98
119
112
87
64
43
23
17
16
9
9
17
88
195
252
152
Wind (km/h)
20
SW
20
SSW
30
SSW
30
SSW
25
S
20
S
25
SSE
30
S
35
S
35
S
30
SSW
20
SSW
10
SW
15
NNW
20
NNW
15
NNW
15
NW
15
W
20
SSW
30
SSW
40
SSW
45
SSW
30
WSW
30
WNW
Wind State
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
cross-off
cross-off
cross-off
cross
cross-on
on
cross-on
cross-on
on
on
cross
High Tide
11:00AM4.84m
11:14PM5.21m
11:37AM4.91m
11:49PM5.30m
12:12PM4.93m
00:24AM5.34m
Low Tide
5:00PM1.45m
5:24AM1.33m
5:35PM1.39m
6:00AM1.23m
6:10PM1.36m
6:35AM1.18m
part cloud
clear
cloud
cloud
cloud
cloud
cloud
cloud
light rain
rain showers
part cloud
clear
clear
clear
cloud
part cloud
part cloud
part cloud
cloud
clear
clear
cloud
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:52
4:54
4:54
4:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:49
9:49
9:49
9:47
 mm
1
1
Temp °C
13
14
15
15
14
14
14
14
14
15
15
16
17
15
13
13
14
14
14
14
13
14
16
13
Feels °C
9
10
10
10
10
10
10
9
8
10
10
13
16
14
10
11
12
12
11
8
5
7
12
8
Swell 1
Height (m)
Direction
Period (s)
0.1
SW
14
0.2
WNW
4
0.1
SW
13
0.1
SW
13
0.1
SW
13
0.1
SW
13
0.1
SW
13
0.1
SW
13
0.1
SW
13
0.1
SW
13
0.1
SW
12
0.1
SW
12
1
SW
6
0.8
SSW
6
0.6
SSW
6
0.5
SW
6
0.5
SW
6
0.4
SW
6
0.3
WNW
4
0.2
N
4
Energy kJ
7
1
7
7
7
7
7
7
7
7
6
6
64
43
23
17
16
9
3
1
Swell 2
Height (m)
Direction
Period (s)
0.1
SW
13
0.1
SW
13
0.1
SW
13
0.1
SW
13
0.1
SW
13
0.1
SW
13
0.1
SW
12
0.1
SW
12
0.1
SW
12
0.1
SW
12
0.1
SW
12
0.3
N
4
0.3
N
4
Energy kJ
7
7
7
7
7
7
6
6
6
6
6
3
3
Swell 3
Height (m)
Direction
Period (s)
0.1
SW
12
0.1
SW
12
0.1
SW
12
Energy kJ
5
5
6
Wind waves
Height (m)
Direction
Period (s)
1
SW
7
0.8
SSW
7
0.9
SSW
7
1
SSW
5
0.9
SSW
5
0.9
SSW
5
1
SSW
4
1
SSW
5
1.4
SSW
5
1.4
SSW
6
1.3
SSW
6
1.2
SSW
6
0.6
WNW
3
0.7
NW
4
0.6
NW
4
0.6
NW
4
0.5
W
4
0.4
SW
6
0.8
SSW
4
1.3
SSW
5
1.7
SW
6
1.9
SW
6
1.4
SW
6
Energy kJ
89
59
70
44
44
39
39
49
98
119
112
87
8
16
13
12
8
9
17
88
195
252
152
Nearest Offshore or Glassy
Rating
(10 max)
1
1
2
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
2
1
Distance (km)
183
174
195
195
171
186
234
246
249
246
101
249
51
8
174
55
174
51
51
346
255
305
376
51
Best forecast wave conditions in Anglesy
Rating
(10 max)
1
Best forecast wave conditions in United Kingdom
Rating
(10 max)
4
3
3
3
3
3
2
2
3
3
2
2
2
2
2
2
2
2
2
1
2
2
1
Header Global
Rating
(10 max)
7
7
5
6
8
5
5
5
5
5
5
5
4
5
5
5
5
5
5
4
4
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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