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Surf Forecasts:

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

information circle48hr Weather and Surf, issued 11 pm Thursday 15 Jan 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
8.5° C
 (Which is 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 4AM is: 0.6m 8s primary swell from a South-southwest direction and 0.2m 17s secondary swell from a West-southwest direction, 0.8m 4s secondary swell from a South direction (forecast issued at 11:00pm January 15). The wind direction is predicted to be cross-onshore.

Time (GMT) & DateWave HeightWave Period
Morning (16 Jan)4.5ft (1.3m)5s
Afternoon (16 Jan)5ft (1.6m)6s
Evening (16 Jan)5ft (1.5m)7s

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
Friday
16
Saturday
17
Sunday
18
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
1
1
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.8
SSW
0.4
SW
0.6
SSW
1.3
SSW
1.3
SSW
1.4
SSW
1.6
SSW
1.6
SSW
1.5
SSW
1.5
SSW
1
SSW
1.3
SSW
1.2
SSW
1.2
SSW
1
SSW
0.9
SSW
0.9
SSW
0.8
SSW
0.8
SSW
0.8
SSW
0.8
SSW
0.7
SSW
0.5
SSW
0.5
SSW
Period(s) (?)8178555677767776677777666
Wave
Graph
(?)Metric surfscale
Energy kJ (?)86764472751091862352362109015413212182756250535150352220
Wind
(km/h)
15
S
20
SSE
30
SSE
30
S
30
S
35
SSE
35
SSE
25
SSE
25
SE
15
ESE
15
ESE
15
ESE
15
SE
15
SE
15
ESE
15
ESE
15
ESE
15
ESE
15
ESE
10
ESE
10
SE
10
SE
10
SE
10
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		crosscrosscross-
off		cross-
off		cross-
off		cross-
off		crosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		crosscrosscross
High Tide
/ height (m)
8:37PM
4.65
8:55AM
4.95
9:19PM
4.83
9:33AM
5.19
9:56PM
4.99
10:08AM
5.39
Low Tide
/ height (m)
2:39AM
1.89
3:04PM
1.78
3:18AM
1.69
3:42PM
1.54
3:54AM
1.50
4:17PM
1.32
Friday
16
Saturday
17
Sunday
18
Sunrise----8:23-------8:22-------8:22---
Sunset------4:30-------4:32-------4:35-
part cloud
part cloud
cloud
cloud
rain showers
cloud
part cloud
rain showers
cloud
cloud
cloud
cloud
clear
clear
clear
clear
clear
clear
cloud
cloud
cloud
cloud
cloud
light rain
Rain (mm)
----1--1---------------1
Temp. °C777888987777789988999888
Feels °C (?)320110121232345544555555
  • 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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FREE! Surf-Forecast.com widget for your website

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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