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Surf Forecasts:

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

information circle48hr Weather and Surf, issued 5 pm Sunday 23 Nov 2025 GMT
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
12.3° C
 (Which is slightly warmer than usual)

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

The current surf forecast for Trearddur Bay (Holy Island) at 1AM is: 2.5m 7s primary swell from a Southwest direction (forecast issued at 05:00pm November 23). The wind direction is predicted to be cross-onshore.

Time (GMT) & DateWave HeightWave Period
Morning (24 Nov)2.5ft (0.8m)8s
Afternoon (24 Nov)1.5ft (0.4m)8s
Evening (24 Nov)0.5ft (0.1m)11s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 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
See all maps
Wave Height (m) & direction (?)
2.4
W
2.4
WSW
2.5
WSW
2.5
SW
1.8
SW
1.2
SW
0.8
SW
0.6
SW
0.4
SW
0.3
SW
0.1
W
0.2
WSW
0.1
W
0.1
SW
0.1
SW
0.1
SW
0.1
SW
0.1
SW
0.1
SW
0.1
SW
0.4
SW
0.8
SSW
1.4
SSW
2
SSW
Period(s) (?)677788898811812121312129882456
Wave
Graph
(?)Metric surfscale
Energy kJ (?)490483553666345187102461710363666633321788299
Wind
(km/h)
45
W
45
WSW
50
WSW
40
WSW
25
N
40
N
50
NNE
40
NNE
40
N
40
N
30
NNE
20
NNE
30
N
20
N
20
NNE
15
N
15
N
5
NNE
5
S
10
SSW
20
SSW
25
SSW
40
S
45
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		oncross-
on		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		glassglasscross-
on		cross-
on		cross-
on		cross-
on		cross-
on
High Tide
/ height (m)
12:05AM
5.00
12:21PM
5.26
12:44AM
4.84
1:01PM
5.13
1:29AM
4.68
Low Tide
/ height (m)
5:55PM
1.53
6:08AM
1.71
6:34PM
1.65
6:46AM
1.88
7:17PM
1.77
7:30AM
2.06
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Sunrise------7:58-------7:58-------8:00-
Sunset4:12-------4:10-------4:09-------
thunderstorm
part cloud
cloud
light rain
rain showers
cloud
light rain
part cloud
rain showers
rain showers
light rain
rain showers
rain showers
clear
clear
clear
clear
clear
cloud
cloud
part cloud
cloud
cloud
light rain
Rain (mm)
1--12-1-11121----------1
Temp. °C9988989910998888888888998
Feels °C (?)-2-1-3-13-1-20102212333554220-2
  • 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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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Trearddur Bay (Holy Island) surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

View detailed surf forecast for Trearddur Bay (Holy Island) at:
surf-forecast.com

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