Trearddur Bay (Holy Island) Surf Break

Lat Long: 53.28° N 4.62° W

Trearddur Bay (Holy Island) 48 hour detailed Surf Forecast

Issued: 12 pm 01 Aug 2026 (local time)

Forecast update in  hr  min

Today's Trearddur Bay (Holy Island) sea temperature is
16.4° C
1.0° 

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 (01 Aug):

  • Morning surf: Morning surf (01 Aug, local time) - 2ft (0.6m), 4s period with W swell.
  • Afternoon surf: Afternoon surf (01 Aug, local time) - 1ft (0.3m), 5s period with SW swell.
  • Evening surf: Evening surf (01 Aug, local time) - 1.5ft (0.4m), 3s period with SW swell.

The current surf forecast for Trearddur Bay (Holy Island) at 3PM is: 0.3m 5s primary swell from a Southwest direction and 0.3m 4s secondary swell from a Northwest direction (forecast issued at 12:00pm August 01). The wind direction is predicted to be onshore.

Time (BST) & DateWave HeightWave Period
Morning (01 Aug)2ft (0.6m)4s
Afternoon (01 Aug)1ft (0.3m)5s
Evening (01 Aug)1.5ft (0.4m)3s

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


Short Range Forecast

Some drizzle, heaviest during Mon night. Warm (max 21°C on Mon afternoon, min 13°C on Sat morning). Wind will be generally light.

Sat
1
Sunday
2
Monday
3
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.6
W
4
0.5
W
4
0.3
SW
5
0.4
SW
3
0.4
SW
3
0.4
SW
4
0.4
SW
4
0.3
SW
4
0.2
SSW
4
0.1
W
9
0.1
W
9
0.1
SW
8
0.1
W
10
0.1
W
10
0.1
SW
9
0.2
WSW
9
0.1
SW
9
0.1
SW
8
0.2
WSW
8
0.3
SW
8
0.3
SW
8
Wave Graph
Metric surfscale
Energy kJ
11
6
3
2
4
5
4
2
1
1
2
3
3
3
3
8
3
3
7
11
11
Wind (km/h)
20
W
15
W
15
SSW
15
SW
10
S
10
S
10
SE
10
ENE
10
E
5
WSW
15
NE
20
NE
20
NE
25
NNE
25
ENE
15
E
10
ESE
10
W
10
NNE
5
NNW
20
WNW
Wind State
cross-on
cross-on
on
on
cross-on
cross-on
cross
cross-off
cross-off
cross-on
off
off
off
off
cross-off
cross-off
cross-off
cross-on
off
cross-off
cross
High Tide
12:58PM5.13m
1:09AM5.52m
1:32PM5.12m
1:43AM5.48m
2:07PM5.09m
Low Tide
6:56PM1.12m
7:20AM0.89m
7:31PM1.14m
7:56AM0.93m
8:09PM1.21m
clear
clear
part cloud
part cloud
cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
cloud
part cloud
cloud
part cloud
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:33
5:35
5:37
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:14
9:12
9:10
 mm
Temp °C
13
14
15
15
15
15
15
14
16
16
16
16
16
16
16
16
19
19
21
21
17
Feels °C
9
11
12
12
12
12
13
11
14
14
13
13
12
12
11
13
17
18
20
20
13
  • 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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