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Surf Forecasts:

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

information circle48hr Weather and Surf, issued 11 pm Monday 09 Mar 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
8.6° C
 (Which is 1.2°C warmer than normal for this time of year)

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

The current surf forecast for Trearddur Bay (Holy Island) at 7AM is: 1.6m 6s primary swell from a Southwest direction (forecast issued at 11:00pm March 09). The wind direction is predicted to be cross-onshore.

Time (GMT) & DateWave HeightWave Period
Morning (10 Mar)6.5ft (2.0m)6s
Afternoon (10 Mar)10ft (3.0m)7s
Evening (10 Mar)10ft (3.0m)8s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table
Tuesday
10
Wednesday
11
Thursday
12
9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 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 (?)
0.9
SSW
0.9
SSW
1.2
SW
1.4
SW
2
SSW
2.4
SSW
3
SSW
3
SSW
3
SSW
2.5
SW
2.3
SW
2.3
WSW
2.2
WSW
1.9
WSW
1.5
SW
1.6
SW
2.2
SW
3
SW
4
SW
4.5
SW
4
SW
3.5
SW
2.5
SW
2.2
SW
Period(s) (?)445567788877666668899999
Wave
Graph
(?)Metric surfscale
Energy kJ (?)2832741192935308049881020843552491363238146165366116120243087294516561185783
Wind
(km/h)
30
S
30
SSW
35
SW
35
SSW
40
SSW
50
S
50
S
50
SSW
55
SSW
45
WSW
40
WSW
40
W
40
W
35
WSW
35
WSW
40
SW
50
SW
60
SSW
65
SSW
65
SSW
65
SW
60
SW
60
SW
30
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		onononcross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		onononononononononon
High Tide
/ height (m)
1:57AM
4.73
2:18PM
4.56
2:44AM
4.46
3:14PM
4.22
3:49AM
4.22
4:40PM
3.97
Low Tide
/ height (m)
7:51PM
1.67
8:07AM
1.80
8:33PM
2.05
8:59AM
2.15
9:33PM
2.39
10:15AM
2.42
Tuesday
10
Wednesday
11
Thursday
12
Sunrise----6:46-------6:43-------6:41---
Sunset-------6:12-------6:14-------6:15
part cloud
cloud
cloud
part cloud
cloud
light rain
cloud
cloud
mod rain
rain showers
part cloud
part cloud
clear
clear
cloud
clear
cloud
cloud
cloud
cloud
light rain
light rain
light rain
light rain
Rain (mm)
-----1--61----------1115
Temp. °C8988889991097789989991111109
Feels °C (?)2300-1-2-2-2-210-2-3010-3-3-4-4-2-1-23
  • 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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