Cemaes (Isle of Anglesey) weather

Forecast days

Overcast changing to light rain by early evening.
Sunrise iconSunrise:
Sunset iconSunset:
M UV
L Pollution
No pollen data.
Next low tide: for
Cemlyn (Beach)

7 day forecast for Cemaes

Today (18 September 2025)
Time
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 Overcast Overcast Overcast Overcast Light rain Light rain Overcast Overcast Overcast Overcast
Chance of precipitation
60%
40%
40%
10%
20%
40%
60%
50%
40%
40%
50%
50%
Temperature
16°
17°
17°
17°
17°
17°
17°
17°
17°
17°
17°
17°
Feels like temperature (°C)
14°
14°
14°
14°
14°
13°
13°
13°
13°
13°
13°
13°
Wind direction and speed
SSW
13
SSW
17
SW
20
SW
21
SSW
22
SSW
22
SSW
23
SSW
23
SSW
23
SSW
23
SSW
23
SSW
23
Wind gust (mph)
25
29
35
38
39
40
40
41
41
41
40
40
Visibility
M
M
G
VG
VG
VG
VG
VG
VG
VG
VG
G
Humidity
94%
96%
97%
94%
93%
92%
93%
94%
94%
94%
95%
95%
UV 2 2 2 1 1 1 1 1 - - - -
Friday (19 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 rain Light rain Light rain Light rain Heavy rain Heavy rain Heavy rain Heavy rain Light rain Light rain Light rain Light rain Heavy rain Heavy rain Light rain Light rain Heavy rain Light rain Light rain Heavy rain Heavy rain Heavy rain Light rain Light rain
Chance of precipitation
60%
70%
90%
90%
90%
90%
90%
90%
80%
80%
80%
80%
90%
80%
80%
90%
80%
80%
80%
80%
80%
80%
80%
80%
Temperature (°C)
17°
17°
17°
17°
16°
16°
16°
16°
16°
16°
16°
16°
16°
16°
16°
16°
16°
15°
15°
15°
14°
14°
14°
14°
Feels like temperature (°C)
13°
13°
13°
13°
13°
13°
13°
13°
13°
14°
14°
14°
14°
14°
14°
15°
14°
15°
14°
14°
14°
14°
13°
13°
Wind direction and speed (mph)
SSW
22
SSW
22
SSW
22
SSW
21
SSW
20
SSW
19
SSW
18
SW
16
SSW
14
SSW
14
SSW
14
SW
13
SW
13
SW
12
SW
11
SW
10
WSW
9
WSW
8
WSW
8
WSW
7
WSW
6
WSW
5
SW
5
SSW
5
Wind gust (mph)
38
39
38
36
35
34
31
28
24
24
21
20
17
17
15
17
15
13
13
11
12
11
11
11
Visibility (description)
G
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
Humidity
95%
96%
96%
96%
96%
96%
96%
96%
96%
95%
95%
94%
94%
94%
95%
95%
95%
95%
95%
96%
96%
96%
96%
96%
UV - - - - - - 1 1 1 1 1 1 2 2 2 1 1 1 1 1 - - - -
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 Light rain Light rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Light rain Light rain Light rain Light rain Light rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Light rain Light rain
Chance of precipitation
70%
70%
80%
80%
80%
80%
80%
80%
80%
80%
80%
80%
70%
70%
70%
70%
70%
80%
80%
80%
80%
80%
80%
70%
Temperature (°C)
13°
13°
13°
13°
13°
13°
13°
13°
13°
13°
14°
14°
14°
15°
15°
15°
15°
15°
14°
13°
13°
12°
12°
12°
Feels like temperature (°C)
13°
13°
13°
13°
12°
12°
12°
12°
11°
11°
12°
12°
12°
12°
12°
12°
12°
11°
10°
10°
Wind direction and speed (mph)
SE
5
SE
5
ENE
6
ENE
6
ENE
6
ENE
7
NE
8
ENE
9
ENE
10
ENE
11
ENE
12
ENE
13
ENE
13
ENE
14
E
15
ENE
17
ENE
18
NNE
19
NNE
20
NNW
21
NNW
22
NNW
23
NNW
23
NW
23
Wind gust (mph)
10
10
10
11
12
12
13
15
18
19
23
25
24
24
24
24
30
30
34
33
31
34
33
35
Visibility (description)
M
M
M
M
M
M
M
M
M
M
M
M
G
G
G
VG
VG
VG
VG
VG
VG
G
VG
VG
Humidity
96%
96%
96%
96%
96%
96%
96%
96%
95%
94%
94%
92%
91%
91%
91%
89%
86%
86%
86%
88%
90%
88%
87%
87%
UV - - - - - - - 1 1 1 1 1 2 2 2 2 1 1 1 1 - - - -
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 rain Light rain Heavy rain Heavy rain Heavy rain Heavy rain Light rain Light rain Light shower day Light shower day Light shower day Light shower day Light shower day Light shower day Light shower day Light shower day Light shower day Light shower day Light shower day Light shower night Light shower night Light shower night Light shower night Partly cloudy night
Chance of precipitation
70%
70%
80%
80%
90%
80%
80%
80%
80%
70%
70%
70%
70%
70%
70%
70%
70%
70%
60%
60%
60%
60%
50%
50%
Temperature (°C)
11°
11°
11°
11°
10°
10°
10°
10°
10°
11°
11°
12°
12°
12°
12°
12°
12°
12°
12°
11°
11°
11°
11°
11°
Feels like temperature (°C)
Wind direction and speed (mph)
NW
22
NW
22
NNW
21
NNW
21
NNW
20
NNW
20
N
19
NNW
18
N
17
NNW
16
N
16
NNW
16
NNW
16
N
16
N
17
N
17
N
18
N
18
N
18
N
18
N
18
N
17
N
17
NNE
17
Wind gust (mph)
37
37
39
39
37
41
38
36
33
30
30
28
28
29
30
30
30
28
25
26
26
26
26
28
Visibility (description)
VG
VG
VG
VG
VG
VG
VG
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
Humidity
86%
85%
86%
86%
85%
86%
85%
83%
78%
77%
74%
73%
72%
73%
70%
72%
69%
73%
71%
71%
69%
71%
71%
70%
UV - - - - - - - 1 1 1 2 2 3 2 2 2 1 1 1 1 - - - -
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 Partly cloudy night Partly cloudy night Partly cloudy night Sunny intervals Sunny intervals Sunny day Sunny day Sunny day Sunny day Sunny day Sunny intervals Sunny day Sunny intervals Sunny intervals Sunny intervals Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night
Chance of precipitation
50%
40%
40%
40%
30%
30%
30%
30%
20%
20%
10%
10%
10%
10%
10%
10%
10%
10%
10%
20%
20%
20%
30%
30%
Temperature (°C)
11°
11°
10°
10°
10°
10°
10°
10°
10°
11°
12°
12°
13°
13°
13°
13°
13°
12°
12°
11°
10°
10°
10°
10°
Feels like temperature (°C)
10°
10°
10°
10°
10°
10°
10°
Wind direction and speed (mph)
NNE
16
NNE
16
NNE
15
NNE
15
NNE
14
NNE
14
NNE
14
NNE
13
NNE
13
NNE
14
NNE
14
NNE
14
NNE
14
N
13
N
13
N
13
N
12
N
12
N
11
N
10
N
9
N
8
N
8
NNE
8
Wind gust (mph)
27
26
25
24
24
24
24
24
21
21
20
21
21
21
21
21
19
19
18
18
18
16
16
16
Visibility (description)
E
E
E
E
E
E
VG
VG
VG
VG
E
E
E
E
E
E
E
E
VG
VG
VG
VG
VG
VG
Humidity
70%
69%
70%
70%
71%
71%
69%
70%
67%
64%
59%
56%
55%
55%
54%
54%
55%
55%
58%
67%
72%
74%
75%
78%
UV - - - - - - - 1 1 1 2 3 3 3 3 2 1 1 1 1 - - - -
Tuesday (23 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 Cloudy Cloudy Sunny intervals Partly cloudy night Partly cloudy night
Chance of precipitation
20%
20%
10%
10%
10%
10%
10%
10%
<5%
Temperature (°C)
10°
12°
13°
13°
11°
10°
Feels like temperature (°C)
10°
11°
11°
Wind direction and speed (mph)
NNE
7
NNE
6
N
6
NNW
7
NW
9
NNE
11
NNE
11
NNE
9
NE
7
Wind gust (mph)
14
8
7
7
13
14
13
10
7
Visibility (description)
VG
VG
VG
G
VG
VG
VG
VG
VG
Humidity
79%
80%
83%
85%
71%
59%
61%
77%
86%
UV - - - 1 2 3 1 1 -
Wednesday (24 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
<5%
<5%
<5%
<5%
<5%
<5%
<5%
<5%
Temperature (°C)
13°
14°
14°
11°
Feels like temperature (°C)
11°
13°
13°
10°
Wind direction and speed (mph)
E
6
ESE
5
ESE
5
ESE
8
E
10
NE
10
NE
8
ESE
6
Wind gust (mph)
6
6
7
13
14
13
9
7
Visibility (description)
G
G
G
VG
VG
VG
VG
VG
Humidity
88%
90%
90%
74%
64%
62%
82%
90%
UV - - 1 2 3 1 1 -

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Cemaes weather map

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Flood alerts in force for Wales

Wales weather forecast

Headline:

Often cloudy with patchy rain at times.

Today:

A cloudy, damp and mild start to Thursday. Cloud breaking in the east with some brighter spells, but drizzle persisting over the hills in the west. Staying windy and humid. Maximum temperature 20 °C.

Tonight:

Remaining cloudy in the west overnight with drizzle persisting over hills. Drier in the east with a few clear spells. Windy in the northwest, but winds easing elsewhere by dawn. Minimum temperature 12 °C.

Friday:

Cloudy in the west with rain and drizzle, turning heavy at times over hills and mountains. Some brighter and drier intervals in the east. Winds continue to ease. Feeling humid. Maximum temperature 20 °C.

Outlook for Saturday to Monday:

Remaining changeable with showers or longer spells of rain on Saturday. Turning colder through Sunday as showery rain clears southeast, leaving sunny spells and showers on Monday.

Updated:

UK long range weather forecast

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