Trearddur Bay (Beach) (Isle of Anglesey) weather

Here are our top tips to keep you, your friends and family safe at the beach with links to Royal National Lifeboat Institution (RNLI) and Met Office advice.

Forecast days

Light rain.
Beach safety today
Large, powerful waves and strong wind
  • • only experts should take part in water activities

Tide: Next high tide (4.7m) at

Sunrise iconSunrise:
Sunset iconSunset:
L UV
L Pollution
No pollen data.

7 day forecast for Trearddur Bay (Beach)

Today (19 September 2025)
Time
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00
Weather symbols Light rain Overcast Light rain Light rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Light rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain
Chance of precipitation
30%
30%
60%
80%
90%
≥95%
≥95%
≥95%
≥95%
90%
90%
90%
90%
90%
90%
Temperature
16°
17°
17°
17°
17°
17°
17°
17°
17°
16°
16°
16°
15°
15°
14°
Feels like temperature (°C)
13°
13°
13°
13°
13°
13°
13°
14°
14°
14°
15°
15°
14°
14°
14°
Wind direction and speed
SSW
22
SSW
22
SSW
22
SSW
21
SSW
20
SSW
20
SSW
19
SSW
18
SSW
17
SW
14
SW
12
WSW
9
WNW
7
WNW
7
NW
7
Wind gust (mph)
37
37
35
33
33
32
30
30
24
19
15
15
14
14
14
Visibility
M
G
G
G
M
M
M
M
M
M
M
M
M
M
M
Humidity
93%
93%
93%
93%
93%
94%
95%
95%
95%
96%
96%
96%
95%
95%
95%
UV 1 1 1 1 2 1 1 1 1 1 1 - - - -
Wind direction and speed
22
22
22
21
20
20
19
18
17
14
12
9
7
7
7
Height of waves offshore (m)
1.8
1.6
1.5
1.5
1.4
1.4
1.5
1.4
1.4
1.3
1.3
1.3
1.2
1.0
0.9
Period of waves offshore (s)
8
8
8
6
6
6
6
7
7
7
7
7
8
9
9
Direction of waves offshore
Saturday (20 September 2025)
Time
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00
Weather symbols Heavy rain Heavy rain Heavy rain Heavy rain Light rain Light rain Light rain Cloudy Cloudy Cloudy Cloudy Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Light shower day Light shower night Heavy shower night Light shower night Heavy shower night Light shower night
Chance of precipitation
90%
≥95%
≥95%
90%
90%
80%
60%
40%
40%
40%
40%
40%
30%
40%
40%
30%
40%
40%
60%
70%
70%
70%
70%
70%
Temperature (°C)
14°
14°
14°
13°
13°
13°
13°
12°
13°
13°
14°
14°
14°
15°
15°
15°
15°
14°
14°
14°
13°
13°
13°
12°
Feels like temperature (°C)
13°
13°
12°
12°
12°
12°
12°
12°
12°
12°
12°
13°
13°
13°
13°
13°
13°
12°
12°
11°
10°
10°
10°
9°
Wind direction and speed (mph)
NW
7
NW
8
NW
8
NW
8
NW
7
NNW
7
NNW
6
ENE
6
N
6
NW
7
WNW
8
WNW
9
NW
9
NW
10
NW
10
NW
11
NW
12
NW
13
NW
14
NW
14
NNW
15
NNW
15
NNW
16
NNW
17
Wind gust (mph)
13
14
16
15
12
11
11
11
11
11
13
13
14
13
15
16
16
19
20
24
26
28
32
31
Visibility (description)
M
M
M
M
M
M
G
VG
VG
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
Humidity
95%
94%
93%
93%
92%
92%
92%
92%
91%
85%
82%
78%
75%
68%
69%
70%
69%
69%
75%
78%
82%
82%
82%
83%
UV - - - - - - - 1 1 1 1 2 2 2 2 2 1 1 1 1 - - - -
Wind direction and speed (mph)
7
8
8
8
7
7
6
6
6
7
8
9
9
10
10
11
12
13
15
15
16
17
17
18
Height of waves offshore (m)
0.8
0.7
0.6
0.5
0.5
0.5
0.5
0.6
0.6
0.6
0.6
0.6
0.5
0.4
0.4
0.3
0.3
0.3
0.4
0.4
0.4
0.5
0.5
0.4
Period of waves offshore (s)
8
8
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
Direction of waves offshore
Sunday (21 September 2025)
Time
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00
Weather symbols Light shower night Heavy shower night Heavy rain Heavy rain Light rain Light rain Light shower night Light shower day Light shower day Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Light shower day Sunny intervals Light shower day Light shower day Light shower night Light shower night Light shower night Light shower night Partly cloudy night
Chance of precipitation
80%
80%
80%
80%
80%
80%
70%
60%
50%
40%
40%
40%
50%
50%
50%
50%
50%
50%
60%
50%
50%
60%
50%
40%
Temperature (°C)
12°
12°
12°
11°
11°
11°
11°
10°
10°
11°
12°
12°
12°
12°
13°
13°
12°
13°
12°
12°
11°
11°
11°
10°
Feels like temperature (°C)
9°
9°
8°
8°
8°
7°
7°
7°
7°
8°
8°
9°
9°
9°
9°
9°
9°
9°
9°
9°
9°
9°
9°
8°
Wind direction and speed (mph)
NNW
17
NNW
18
N
18
N
18
N
19
N
20
N
20
N
20
N
19
N
19
N
20
N
19
N
19
N
18
N
17
N
17
N
17
N
17
NNE
16
N
14
NNE
13
NNE
12
NNE
11
NE
11
Wind gust (mph)
32
33
34
37
40
39
37
37
36
36
35
35
33
32
33
33
32
34
31
32
31
29
27
25
Visibility (description)
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
Humidity
84%
84%
85%
83%
82%
79%
78%
76%
69%
64%
58%
57%
55%
56%
55%
56%
58%
58%
63%
67%
72%
71%
70%
72%
UV - - - - - - - 1 1 1 2 3 4 4 3 2 2 1 1 1 - - - -
Wind direction and speed (mph)
19
19
19
19
19
19
20
21
20
20
20
19
19
18
18
18
18
17
15
14
13
13
12
11
Height of waves offshore (m)
0.4
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.4
0.4
0.4
0.4
0.3
0.5
0.7
0.9
0.8
0.8
0.8
0.8
0.7
0.7
0.7
Period of waves offshore (s)
9
9
8
8
7
7
8
9
9
9
9
9
9
9
8
7
6
6
6
6
6
6
6
6
Direction of waves offshore
Monday (22 September 2025)
Time
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00
Weather symbols Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Clear night Clear night Clear night Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night
Chance of precipitation
40%
40%
30%
20%
20%
20%
20%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
20%
20%
20%
30%
30%
30%
Temperature (°C)
10°
10°
10°
10°
10°
10°
9°
9°
10°
11°
12°
12°
13°
13°
13°
13°
13°
13°
13°
12°
11°
11°
11°
11°
Feels like temperature (°C)
8°
8°
8°
8°
8°
8°
7°
7°
8°
9°
10°
10°
10°
10°
11°
11°
11°
11°
11°
10°
9°
10°
9°
10°
Wind direction and speed (mph)
NE
10
NE
9
NE
9
NE
9
NE
9
NE
9
NNE
9
NNE
9
NNE
10
NNE
11
NNE
12
NNE
13
NNE
13
NNE
13
N
13
N
13
NNE
12
NNE
12
NNE
11
NNE
9
NNE
8
NNE
7
NNE
7
NNE
6
Wind gust (mph)
21
20
20
20
20
20
21
23
24
24
24
24
22
22
22
21
20
19
18
18
17
15
14
13
Visibility (description)
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
VG
VG
Humidity
72%
73%
73%
75%
74%
74%
74%
73%
72%
65%
56%
55%
53%
51%
51%
52%
53%
55%
58%
69%
74%
74%
76%
75%
UV - - - - - - - 1 1 1 2 3 3 3 3 2 2 1 1 1 - - - -
Wind direction and speed (mph)
10
9
9
9
9
9
9
10
10
11
12
12
13
13
13
12
12
11
10
9
8
7
7
6
Height of waves offshore (m)
0.6
0.6
0.6
0.5
0.5
0.5
0.5
0.5
0.4
0.4
0.4
0.4
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.2
0.2
0.2
0.2
Period of waves offshore (s)
6
6
6
5
5
5
5
5
5
5
5
5
5
5
7
8
10
11
12
13
13
13
13
13
Direction of waves offshore
Tuesday (23 September 2025)
Time
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00
Weather symbols Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night
Chance of precipitation
30%
30%
30%
20%
20%
20%
20%
30%
20%
20%
20%
20%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
Temperature (°C)
11°
11°
11°
11°
11°
11°
11°
10°
11°
12°
13°
14°
14°
14°
14°
14°
14°
14°
13°
12°
11°
11°
10°
10°
Feels like temperature (°C)
10°
10°
10°
10°
10°
10°
10°
9°
10°
11°
11°
12°
12°
12°
12°
12°
12°
12°
12°
10°
10°
9°
9°
9°
Wind direction and speed (mph)
NNE
6
NE
6
NE
5
NE
5
NE
5
NNE
5
NNE
5
NE
5
NE
5
ENE
6
NE
8
NE
9
NNE
9
NNE
10
NNE
10
NNE
10
NNE
10
NNE
10
NNE
9
NE
8
NE
6
NE
6
ENE
5
ENE
5
Wind gust (mph)
12
11
9
9
9
9
9
9
12
12
13
14
14
14
14
14
14
13
12
11
11
11
10
10
Visibility (description)
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
VG
Humidity
79%
81%
83%
83%
83%
83%
82%
83%
83%
75%
69%
64%
59%
58%
57%
57%
58%
59%
66%
76%
83%
85%
85%
86%
UV - - - - - - - 1 1 1 2 3 3 3 3 2 1 1 1 1 - - - -
Wind direction and speed (mph)
6
6
6
6
6
6
6
6
7
7
8
9
9
10
10
10
10
9
9
8
7
6
5
5
Height of waves offshore (m)
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
Period of waves offshore (s)
13
13
13
13
13
13
13
13
13
13
13
13
13
13
12
12
12
12
12
12
12
12
12
12
Direction of waves offshore
Wednesday (24 September 2025)
Time
00:00
01:00
04:00
07:00
10:00
13:00
16:00
19:00
22:00
Weather symbols Partly cloudy night Cloudy Cloudy Cloudy Sunny intervals Sunny intervals Sunny intervals Partly cloudy night Partly cloudy night
Chance of precipitation
10%
10%
10%
<5%
10%
<5%
<5%
<5%
<5%
Temperature (°C)
10°
10°
9°
8°
13°
15°
15°
12°
10°
Feels like temperature (°C)
9°
9°
8°
7°
12°
13°
13°
11°
9°
Wind direction and speed (mph)
ENE
5
E
5
E
5
E
5
E
7
E
9
NE
9
NE
7
ENE
5
Wind gust (mph)
9
5
5
6
11
12
11
7
6
Visibility (description)
VG
G
G
G
VG
VG
VG
VG
G
Humidity
88%
90%
91%
93%
75%
65%
63%
82%
91%
UV - - - 1 2 4 1 1 -
Wind direction and speed (mph)
5
5
5
5
7
9
9
7
5
Height of waves offshore (m)
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
Period of waves offshore (s)
12
12
12
12
12
12
11
11
11
Direction of waves offshore
Thursday (25 September 2025)
Time
01:00
04:00
07:00
10:00
13:00
16:00
19:00
22:00
Weather symbols Partly cloudy night Partly cloudy night Sunny intervals Sunny intervals Sunny intervals Sunny intervals Partly cloudy night Partly cloudy night
Chance of precipitation
10%
10%
10%
10%
10%
<5%
<5%
10%
Temperature (°C)
10°
9°
8°
14°
15°
15°
13°
11°
Feels like temperature (°C)
9°
8°
7°
12°
14°
14°
12°
10°
Wind direction and speed (mph)
E
6
ESE
6
E
5
ESE
8
SE
10
ESE
10
E
8
ESE
7
Wind gust (mph)
6
6
7
13
13
11
9
7
Visibility (description)
G
G
G
VG
VG
VG
VG
G
Humidity
91%
93%
95%
78%
65%
65%
84%
90%
UV - - 1 2 4 1 1 -
Wind direction and speed (mph)
6
 – – – – – – –
Height of waves offshore (m)
0.1
 – – – – – – –
Period of waves offshore (s)
10
 – – – – – – –
Direction of waves offshore
–
–
–
–
–
–
–

Tide times

Friday 19 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Friday 19 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Friday 19 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Friday 19 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Saturday 20 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Saturday 20 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Saturday 20 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Saturday 20 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Sunday 21 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Sunday 21 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Sunday 21 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Sunday 21 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Monday 22 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Monday 22 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Monday 22 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Monday 22 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Tuesday 23 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Tuesday 23 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Tuesday 23 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Tuesday 23 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Wednesday 24 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Wednesday 24 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Wednesday 24 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Wednesday 24 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Thursday 25 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Thursday 25 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Thursday 25 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times

Thursday 25 September

Tide times and heights are from Trearddur Bay tidal station which is 0.8 miles away. So times may be different at this beach. What does this mean?

Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

Tide times explained
News

Unsettled Weather Ahead

Heavy rain, strong winds, and marked temperature contrasts are expected across the UK over the coming days.

Read more

UK video forecast

Trearddur Bay (Beach) weather map

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Forecast for 09:00, Fri
Updated 06:00 (UTC+1) on Fri 19 Sep 2025

Wales weather forecast

Headline:

Increasingly wet and windy on Saturday.

Today:

A drier, brighter and warmer day for most with sunny spells, these most prevalent in the east. Rain at times across Anglesey and rain edging into other western regions later, heavy at times. Winds gradually easing. Maximum temperature 21 °C.

Tonight:

Remaining cloudy, with outbreaks of rain and drizzle turning more widespread overnight, perhaps heavy at times. Breezy at times along coasts. Feeling humid. Minimum temperature 15 °C.

Saturday:

Becoming increasingly windy, with strong winds and coastal gales possible, especially later. Cloudy with outbreaks of rain, perhaps heavy at times, giving localised flooding and travel disruption. Maximum temperature 18 °C.

Outlook for Sunday to Tuesday:

Sunny intervals with scattered showers on Sunday. Strong winds gradually easing, but feeling considerably cooler. Much drier from Monday, with plenty of sunny spells, though the odd shower still possible.

Updated:

UK long range weather forecast

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