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Surf Forecasts:

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

information circle48hr Weather and Surf, issued 11 pm Thursday 08 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
9.0° 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 1AM is: 0.5m 11s primary swell from a Southwest direction and 0.2m 7s secondary swell from a South-southwest direction (forecast issued at 11:00pm January 08). An open ocean swell of 1.2m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (GMT) & DateWave HeightWave Period
Morning (09 Jan)2ft (0.6m)10s
Afternoon (09 Jan)2ft (0.6m)10s
Evening (09 Jan)2ft (0.6m)10s

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
09
Saturday
10
Sunday
11
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 (?)
0.3
SW
0.4
SW
1
SW
0.9
SW
0.6
SW
0.6
SW
0.6
SW
0.6
SW
0.6
SW
0.6
SW
0.6
SW
0.5
SW
0.5
SW
0.4
SW
0.4
SW
0.5
SW
0.6
SSW
0.9
SSW
1.5
S
2.3
S
2.5
S
3
S
3.5
SSW
3
SSW
Period(s) (?)7121010101010101012129997994567888
Wave
Graph
(?)Metric surfscale
Energy kJ (?)103521616089846567671269340362114375025117419736118915371251
Wind
(km/h)
40
NE
30
NNE
35
NNW
30
N
30
N
30
NNW
35
NNW
25
NNW
20
NNW
15
NW
10
NW
15
NW
15
NW
15
NW
20
WNW
5
WSW
20
S
40
S
45
S
50
SSE
55
SSE
65
S
60
SSE
65
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		crosscrosscrosscrosscrosscrossoncross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on
High Tide
/ height (m)
2:10AM
4.95
2:24PM
5.22
2:55AM
4.70
3:10PM
4.91
3:46AM
4.49
4:05PM
4.63
Low Tide
/ height (m)
8:00PM
1.14
8:07AM
1.58
8:47PM
1.47
8:54AM
1.86
9:37PM
1.78
9:48AM
2.13
Friday
09
Saturday
10
Sunday
11
Sunrise----8:30-------8:29-------8:29---
Sunset------4:20-------4:22-------4:22-
light rain
light rain
cloud
cloud
light rain
light rain
light rain
rain showers
rain showers
rain showers
rain showers
light rain
light rain
light rain
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
light rain
light rain
Rain (mm)
21--1111111111--------12
Temp. °C3566567666556677766678911
Feels °C (?)-6-3-2-2-2-2-1-1011112241-3-5-6-5-5-3-1
  • 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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