Y Garn (Gwynedd) weather

Forecast days

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

7 day forecast for Y Garn

Today (16 September 2025)
Time
21:00
22:00
23:00
Weather symbols Cloudy Light rain Heavy rain
Chance of precipitation
10%
70%
≥95%
Temperature
Feels like temperature (°C)
Wind direction and speed
SW
18
SSW
18
SSW
20
Wind gust (mph)
20
22
24
Visibility
VG
VG
P
Humidity
92%
93%
94%
UV - - -
Wednesday (17 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 Heavy rain Heavy rain Heavy rain Heavy rain Light rain Light shower day Fog Fog Fog Fog Fog Fog Fog Fog Fog Fog Fog Fog Fog Fog
Chance of precipitation
≥95%
≥95%
≥95%
≥95%
≥95%
≥95%
≥95%
≥95%
90%
60%
40%
20%
10%
10%
10%
20%
20%
20%
10%
10%
10%
20%
30%
40%
Temperature (°C)
10°
11°
11°
11°
11°
11°
11°
11°
11°
10°
10°
10°
Feels like temperature (°C)
Wind direction and speed (mph)
S
21
S
25
S
30
S
35
S
42
S
48
S
46
SSW
43
SW
40
SW
36
SW
35
SW
34
SW
33
SW
33
SW
34
SW
35
SW
35
SW
35
SW
34
SW
33
SSW
34
SSW
32
SSW
31
SSW
31
Wind gust (mph)
28
33
39
46
52
52
51
47
44
39
38
37
38
37
39
39
39
38
37
37
37
36
34
34
Visibility (description)
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
Humidity
97%
99%
99%
99%
99%
99%
99%
100%
100%
100%
99%
97%
95%
93%
92%
91%
92%
92%
94%
96%
97%
97%
97%
98%
UV - - - - - - 1 1 1 1 2 2 3 3 2 2 1 1 1 1 - - - -
Thursday (18 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 Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain
Chance of precipitation
50%
60%
70%
80%
80%
80%
80%
90%
80%
80%
70%
70%
80%
80%
80%
90%
80%
80%
80%
80%
90%
90%
90%
80%
Temperature (°C)
10°
10°
10°
10°
11°
11°
11°
11°
11°
11°
11°
11°
12°
12°
11°
12°
11°
12°
11°
11°
11°
12°
11°
Feels like temperature (°C)
Wind direction and speed (mph)
SSW
30
SSW
31
SSW
31
SSW
32
SSW
35
SSW
38
SW
40
SSW
41
SSW
40
SW
41
SW
42
SSW
43
SSW
44
SSW
45
SW
44
SW
44
SSW
43
SSW
42
SSW
41
SSW
41
SSW
43
SSW
43
SSW
43
SSW
44
Wind gust (mph)
34
34
36
39
41
44
46
46
45
46
47
48
49
49
49
48
47
46
46
48
48
48
48
48
Visibility (description)
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
Humidity
98%
99%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
UV - - - - - - 1 1 1 1 1 1 2 2 1 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 Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain
Chance of precipitation
80%
80%
70%
80%
80%
70%
80%
70%
60%
60%
60%
60%
70%
70%
60%
70%
70%
70%
60%
60%
60%
60%
50%
50%
Temperature (°C)
11°
11°
11°
11°
11°
10°
10°
10°
10°
10°
11°
11°
11°
11°
11°
10°
10°
10°
10°
Feels like temperature (°C)
Wind direction and speed (mph)
SSW
43
SSW
43
SSW
42
SSW
42
SSW
41
SSW
40
SSW
38
SSW
36
SSW
31
SSW
29
SSW
27
SW
27
SW
27
SW
26
SW
24
SW
22
SW
21
SW
19
SW
19
SW
18
SW
15
SW
14
SW
13
SSW
14
Wind gust (mph)
48
47
46
46
45
44
42
39
35
32
30
29
29
28
26
24
23
21
20
19
17
16
17
17
Visibility (description)
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
P
P
P
G
P
VP
P
G
Humidity
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
99%
99%
98%
97%
97%
96%
97%
96%
97%
96%
96%
97%
97%
96%
UV - - - - - - 1 1 1 1 1 2 2 1 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 Light rain Cloudy Cloudy Light shower night Light shower night 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 day Light shower night Light shower night Light shower night Cloudy Partly cloudy night
Chance of precipitation
60%
60%
50%
50%
50%
60%
50%
50%
50%
60%
50%
60%
60%
50%
50%
60%
60%
60%
60%
50%
50%
60%
50%
50%
Temperature (°C)
Feels like temperature (°C)
Wind direction and speed (mph)
SSW
14
SW
16
SW
16
SW
16
SW
17
SW
18
SW
18
SW
17
SW
16
W
17
WNW
18
NW
19
NW
20
NW
22
NW
22
NW
22
NNW
22
NW
23
NNW
23
N
24
N
27
N
27
N
27
N
28
Wind gust (mph)
17
18
18
19
20
20
19
19
20
22
22
25
28
28
27
27
28
28
29
29
30
31
34
34
Visibility (description)
G
P
P
G
G
G
G
G
G
VG
VG
P
P
E
E
E
E
E
VG
VG
VG
VG
VG
VG
Humidity
96%
97%
96%
96%
94%
94%
95%
95%
94%
94%
93%
93%
91%
89%
84%
83%
84%
85%
87%
90%
91%
92%
92%
91%
UV - - - - - - 1 1 1 1 2 2 2 2 2 2 2 1 1 1 - - - -
Sunday (21 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 Light shower night Light shower night Sunny intervals Sunny intervals Cloudy Cloudy Cloudy Overcast
Chance of precipitation
50%
60%
50%
40%
30%
30%
20%
20%
10%
Temperature (°C)
Feels like temperature (°C)
-1°
-1°
-1°
-2°
-2°
Wind direction and speed (mph)
N
27
N
26
NNE
26
NNE
25
NNE
25
NNE
26
NNE
28
NNE
20
N
21
Wind gust (mph)
31
32
33
36
35
34
31
29
23
Visibility (description)
VG
VG
VG
VG
VG
VG
VG
VG
VG
Humidity
90%
91%
88%
84%
73%
64%
60%
69%
72%
UV - - - 1 2 3 1 1 -
Monday (22 September 2025)
Time
01:00
04:00
07:00
10:00
13:00
16:00
19:00
22:00
Weather symbols Overcast Overcast Sunny intervals Cloudy Cloudy Sunny intervals Partly cloudy night Partly cloudy night
Chance of precipitation
10%
<5%
<5%
<5%
<5%
<5%
<5%
10%
Temperature (°C)
Feels like temperature (°C)
-2°
-2°
-2°
-2°
Wind direction and speed (mph)
NNE
16
NE
11
NE
10
NE
16
NE
20
NE
25
NE
17
NE
12
Wind gust (mph)
17
14
18
22
27
27
18
13
Visibility (description)
VG
VG
VG
VG
VG
VG
VG
G
Humidity
75%
78%
81%
66%
59%
59%
75%
84%
UV - - 1 2 4 2 1 -

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WARNING
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Flood alerts in force for Wales
Flood alerts in force for Wales

Wales weather forecast

Headline:

Remaining changeable with rain tonight.

This Evening and Tonight:

Cloudy this evening then turning increasingly wet and windy overnight with a band of heavy and persistent rain pushing eastwards. Rain most persistent over the mountains, with flooding possible. Mild overnight. Minimum temperature 11 °C.

Wednesday:

Heavy, persistent rain clearing eastwards through the morning, though remaining cloudy with outbreaks of patchy rain and drizzle throughout the day, turning heavy at times over the hills. Breezy. Maximum temperature 18 °C.

Outlook for Thursday to Saturday:

Remaining changeable with showers or longer spells of rain at times, though brighter interludes are possible. Often breezy. A little milder and more humid by the end of the week.

Updated:

UK long range weather forecast

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