Trearddur Bay (Holy Island) Surf Break

Lat Long: 53.28° N 4.62° W

Trearddur Bay (Holy Island) 48 hour detailed Surf Forecast

Issued: 6 am 15 Jul 2026 (local time)

Forecast update in  hr  min

Today's Trearddur Bay (Holy Island) sea temperature is
16.4° C
1.6° 

Trearddur Bay (Holy Island) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Trearddur Bay (Holy Island) today (15 Jul):

  • Morning surf: Morning surf (15 Jul, local time) - 0.5ft (0.1m), 16s period with SW swell.
  • Afternoon surf: Afternoon surf (15 Jul, local time) - 0.5ft (0.1m), 16s period with SW swell.
  • Evening surf: Evening surf (15 Jul, local time) - 0.5ft (0.1m), 16s period with SW swell.

The current surf forecast for Trearddur Bay (Holy Island) at 10AM is: 0.1m 16s primary swell from a Southwest direction and 0.1m 6s secondary swell from a South direction (forecast issued at 06:00am July 15). An open ocean swell of 0.3m 4s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (BST) & DateWave HeightWave Period
Morning (15 Jul)0.5ft (0.1m)16s
Afternoon (15 Jul)0.5ft (0.1m)16s
Evening (15 Jul)0.5ft (0.1m)16s

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


Short Range Forecast

Mostly dry. Warm (max 23°C on Wed morning, min 13°C on Fri night). Wind will be generally light.

Wednesday
15
Thursday
16
Friday
17
Sat
18
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
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
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.1
SW
14
0.1
S
13
0.1
SW
16
0.1
SW
16
0.1
SW
16
0.1
SW
16
0.1
SW
16
0.1
S
16
0.1
SW
13
0.2
SSW
6
0.1
SW
6
0.1
SW
14
0.1
SW
14
0.1
SW
14
0.1
SW
15
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
6
0.2
SSW
6
0.2
SSW
6
0.1
SW
12
0.1
SW
12
0.1
SW
12
Wave Graph
Metric surfscale
Energy kJ
7
3
10
10
10
10
10
7
7
4
1
8
8
8
8
8
8
4
4
6
6
6
6
6
Wind (km/h)
15
ENE
15
E
15
ENE
15
NE
20
NE
20
NE
20
NE
15
ENE
10
ENE
10
E
10
ENE
15
NE
20
NNE
20
NNE
15
NE
15
NNE
10
NNE
10
N
15
NNW
20
N
20
N
20
N
15
N
15
N
Wind State
cross-off
cross-off
off
off
off
off
off
off
off
cross-off
off
off
off
cross-off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
11:48AM5.52m
00:06AM5.82m
12:36PM5.53m
00:52AM5.87m
1:23PM5.44m
Low Tide
5:31AM0.52m
5:47PM0.80m
6:20AM0.38m
6:34PM0.77m
7:08AM0.38m
7:20PM0.84m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:07
5:09
5:11
5:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:38
9:37
9:36
9:35
 mm
Temp °C
20
19
20
23
23
22
22
23
22
19
20
22
23
21
21
20
20
19
19
20
21
20
18
15
Feels °C
18
17
19
22
20
19
19
20
19
17
19
19
19
17
18
17
19
18
16
15
16
17
16
13
  • 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
How to use the Wavefinder 

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