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Surf Forecasts:

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

information circle48hr Weather and Surf, issued 11 am Thursday 12 Feb 2026 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
8.3° 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 3PM is: 1.0m 16s primary swell from a Southwest direction and 1.0m 10s secondary swell from a Southwest direction (forecast issued at 11:00am February 12). The wind direction is predicted to be cross-offshore and the swell rating is 3.

Time (GMT) & DateWave HeightWave Period
Morning (12 Feb)2ft (0.6m)17s
Afternoon (12 Feb)3.5ft (1.0m)16s
Evening (12 Feb)4.5ft (1.4m)15s

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
Thursday
12
Friday
13
Saturday
14
Sunday
15
9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM
Rating
(10 max)
1
2
3
2
1
1
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 (?)
0.6
SW
0.7
SW
1
SW
1.5
SW
1.4
SW
1.4
SW
0.9
SW
0.8
SW
0.7
SW
0.9
SW
0.8
SW
0.6
SW
0.5
SW
0.4
SSW
0.4
SW
0.4
SW
0.4
SW
0.2
WSW
0.2
WSW
0.2
WSW
1.4
SSW
2.5
SSW
3
SSW
2.2
SSW
Period(s) (?)171716151514141313121010999991313145677
Wave
Graph
(?)Metric surfscale
Energy kJ (?)183293498100184479930424216324011373433422222117171884514813516
Wind
(km/h)
25
ENE
20
ENE
15
E
15
ENE
25
ENE
30
E
40
ENE
45
ENE
50
ENE
50
NE
40
NE
35
NE
25
NNE
25
NNE
20
N
20
NNW
15
NNW
10
WNW
15
SW
35
SSW
50
S
55
S
60
S
35
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffcross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		offoffoffoffoffcross-
off		cross-
off		cross-
off		cross-
off		crossoncross-
on		cross-
on		cross-
on		cross-
on		cross-
on
High Tide
/ height (m)
6:24AM
4.22
7:17PM
4.19
7:42AM
4.47
8:19PM
4.44
8:33AM
4.79
9:02PM
4.71
Low Tide
/ height (m)
12:50PM
2.42
1:24AM
2.32
1:59PM
2.13
2:18AM
2.05
2:45PM
1.78
2:59AM
1.74
Thursday
12
Friday
13
Saturday
14
Sunday
15
Sunrise7:43-------7:41-------7:39-------
Sunset--5:22-------5:23-------5:25-----
cloud
light rain
cloud
cloud
cloud
cloud
light rain
light rain
light rain
light rain
light rain
cloud
part cloud
clear
clear
clear
clear
cloud
cloud
cloud
light rain
mod rain
mod rain
rain showers
Rain (mm)
-1----32221---------1761
Temp. °C666665433345445556554349
Feels °C (?)01220-3-5-7-8-8-6-4-3-3-1-1020-4-7-9-92
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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