Surf Break

Lat Long: 53.28° N 4.62° W

Trearddur Bay (Holy Island) 48 hour detailed Surf Forecast

Issued: 12 am 26 Sep 2026 (local time)

Forecast update in  hr  min

Today's Trearddur Bay (Holy Island) sea temperature is
16.5°C
1.6° 

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 (26 Sep):

  • Morning surf: Morning surf (26 Sep, local time) - 3.5ft (1.1m), 5s period with SW swell.
  • Afternoon surf: Afternoon surf (26 Sep, local time) - 4.5ft (1.3m), 5s period with SW swell.
  • Evening surf: Evening surf (26 Sep, local time) - 4.5ft (1.4m), 6s period with SW swell.

The current surf forecast for Trearddur Bay (Holy Island) at 9AM is: 1.1m 5s primary swell from a Southwest direction (forecast issued at 12:00am September 26). The wind direction is predicted to be onshore.

Time (BST) & DateWave HeightWave Period
Morning (26 Sep)3.5ft (1.1m)5s
Afternoon (26 Sep)4.5ft (1.3m)5s
Evening (26 Sep)4.5ft (1.4m)6s

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


Short Range Forecast

Light rain (total 9mm), mostly falling on Sun morning. Very mild (max 16°C on Sun afternoon, min 12°C on Sun morning). Winds decreasing (strong winds from the SSE on Sun morning, light winds from the SSE by Mon morning).

Saturday
26
Sunday
27
Monday
28
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
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
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)
0.9
SW
4
1
SW
5
1.1
SW
5
1.1
SW
5
1.2
SW
5
1.2
SW
5
1.4
SW
6
1.4
SW
6
1.4
SSW
6
1.4
SSW
5
1.4
SSW
6
1.5
S
6
1.9
S
6
2.1
SSW
7
1.4
SSW
7
1
SSW
7
0.9
SSW
7
0.8
SSW
7
0.7
SSW
7
0.6
SSW
7
0.5
SW
7
0.4
SSW
6
0.4
SSW
6
0.4
SW
6
Wave Graph
Metric surfscale
Energy kJ
34
45
60
65
74
76
110
128
114
111
114
144
261
437
208
111
81
64
41
30
21
16
16
10
Wind (km/h)
25
SW
25
SW
25
SW
30
SW
30
SSW
35
SSW
35
SSW
35
SSW
30
S
30
S
30
S
30
SSE
45
SSE
35
WSW
30
WNW
20
WNW
20
WNW
15
WNW
5
W
5
SSE
15
S
10
S
10
E
20
E
Wind State
on
on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-off
cross-off
High Tide
10:31PM5.59m
10:54AM5.39m
11:03PM5.76m
11:25AM5.54m
11:36PM5.87m
11:57AM5.63m
Low Tide
4:40AM0.87m
4:52PM0.99m
5:12AM0.69m
5:26PM0.82m
5:46AM0.60m
6:01PM0.74m
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
cloud
cloud
light rain
light rain
rain showers
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
7:09
—
—
—
—
—
—
—
7:11
—
—
—
—
—
—
—
7:13
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
—
—
—
—
7:07
—
—
—
—
—
—
—
7:06
—
—
—
—
—
—
—
7:02
—
 mm
—
—
—
—
—
—
—
—
—
—
—
1
5
3
—
—
—
—
—
—
—
—
—
—
Temp °C
15
14
14
14
15
15
15
15
14
14
14
12
14
16
14
14
13
13
13
13
13
14
14
14
Feels °C
10
9
9
9
10
9
9
10
9
9
8
5
6
11
8
9
9
10
11
12
10
11
11
9
  • 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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