Surf Break

Lat Long: 53.28° N 4.62° W

Trearddur Bay (Holy Island) 48 hour detailed Surf Forecast

Issued: 5 pm 11 Nov 2026 (local time)

Forecast update in  hr  min

Today's Trearddur Bay (Holy Island) sea temperature is
13.3°C
1.2° 

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 (11 Nov):

  • Afternoon surf: Afternoon surf (11 Nov, local time) - 3ft (0.9m), 12s period with SW swell.
  • Evening surf: Evening surf (11 Nov, local time) - 2.5ft (0.7m), 11s period with SW swell.

The current surf forecast for Trearddur Bay (Holy Island) at 8PM is: 0.8m 12s primary swell from a Southwest direction (forecast issued at 05:00pm November 11). An open ocean swell of 0.5m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (GMT) & DateWave HeightWave Period
Morning (11 Nov)--
Afternoon (11 Nov)3ft (0.9m)12s
Evening (11 Nov)2.5ft (0.7m)11s

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


Short Range Forecast

Mostly dry. Very mild (max 10°C on Fri night, min 7°C on Thu morning). Winds decreasing (fresh winds from the NNE on Wed night, light winds from the NNW by Fri morning).

Wed
11
Thursday
12
Friday
13
Sat
14
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
Rating
(10 max)
1
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)
0.9
SW
12
0.8
SW
12
0.7
SW
11
0.6
SW
11
0.6
SW
11
0.6
SSW
11
0.6
SSW
10
0.5
SW
10
0.5
SW
10
0.5
SW
10
0.5
SW
10
0.4
SSW
10
0.4
SW
10
0.4
SW
9
0.4
SW
9
0.4
SW
9
0.4
SW
9
0.4
SW
9
0.3
SW
9
0.3
SW
8
0.2
SSW
12
0.3
SW
11
Wave Graph
Metric surfscale
Energy kJ
244
169
130
96
94
76
71
49
49
48
48
38
24
23
21
21
21
20
12
11
14
20
Wind (km/h)
20
NE
20
NNE
20
N
30
N
30
NNE
35
NNE
35
NNE
30
NNE
30
NNE
25
NNE
20
NNE
25
N
20
NNE
15
N
10
NNW
10
NW
15
WNW
10
W
10
SW
20
SW
20
SW
30
SSW
Wind State
off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross-on
on
on
on
on
High Tide
11:25PM5.26m
11:40AM5.42m
00:01AM5.09m
12:16PM5.30m
00:38AM4.90m
Low Tide
5:15PM1.27m
5:30AM1.40m
5:51PM1.41m
6:05AM1.61m
6:29PM1.59m
clear
clear
part cloud
clear
clear
cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
cloud
part cloud
cloud
part cloud
part cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
—
—
—
7:35
—
—
—
—
—
—
—
7:37
—
—
—
—
—
—
—
7:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
4:29
—
—
—
—
—
—
—
4:27
—
—
—
—
—
—
—
4:25
—
—
—
—
4:23
 mm
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Temp °C
9
9
9
9
9
8
7
8
8
8
8
8
8
8
8
9
9
8
8
9
10
9
Feels °C
4
4
4
1
1
-1
-2
0
0
1
2
1
2
3
4
5
5
4
4
3
4
2
  • 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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