Yr Wyddfa / Snowdon Summit (Gwynedd) weather

Forecast days

Heavy rain.
Sunrise iconSunrise:
Sunset iconSunset:
L UV
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7 day forecast for Yr Wyddfa / Snowdon Summit

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 Heavy 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
≥95%
80%
90%
80%
60%
60%
70%
70%
70%
70%
80%
80%
Temperature
10°
11°
11°
10°
10°
11°
11°
10°
10°
10°
11°
11°
Feels like temperature (°C)
Wind direction and speed
SW
39
SW
42
SW
44
SW
45
SW
49
SSW
50
SSW
51
SSW
54
SSW
54
SSW
54
SSW
57
SSW
57
Wind gust (mph)
47
48
49
54
55
56
59
59
59
63
63
62
Visibility
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
Humidity
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
UV 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 Heavy rain Light rain Heavy rain Heavy rain Heavy rain Light rain Light rain Light rain Heavy rain Heavy rain Heavy rain Heavy rain Light rain Light rain Light rain Light rain Light rain Heavy rain Light rain Light rain Light rain
Chance of precipitation
80%
80%
80%
90%
90%
80%
90%
90%
90%
90%
90%
90%
90%
90%
90%
90%
80%
80%
80%
80%
80%
80%
80%
80%
Temperature (°C)
11°
10°
10°
10°
10°
10°
10°
10°
10°
10°
10°
10°
10°
10°
10°
Feels like temperature (°C)
Wind direction and speed (mph)
SSW
56
SSW
55
SSW
55
SSW
55
SSW
50
SSW
49
SSW
47
SSW
42
SSW
39
SSW
37
SSW
37
SSW
36
SSW
36
SSW
35
SSW
33
SSW
31
SW
28
SW
26
SW
23
SW
20
SW
16
SSW
14
SSW
12
S
12
Wind gust (mph)
62
61
61
61
55
54
51
47
43
40
40
40
39
38
36
34
31
28
25
22
18
15
14
14
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
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
99%
100%
99%
99%
99%
99%
99%
99%
99%
99%
UV - - - - - - 1 1 1 1 1 1 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 Heavy rain Light rain Light rain Heavy rain Heavy rain Heavy rain Light 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 Heavy rain
Chance of precipitation
70%
60%
70%
70%
70%
70%
70%
80%
80%
90%
90%
90%
80%
80%
70%
70%
80%
80%
80%
90%
90%
90%
90%
80%
Temperature (°C)
Feels like temperature (°C)
-1°
-1°
-2°
-3°
-3°
Wind direction and speed (mph)
SE
13
ESE
14
SE
14
ESE
15
E
17
E
19
ESE
20
ESE
21
ESE
21
E
22
E
24
ESE
28
ESE
29
ESE
32
ESE
35
SE
38
SE
40
S
41
SW
42
SSW
44
SSW
47
W
50
WNW
50
WNW
49
Wind gust (mph)
15
16
17
18
21
23
23
23
24
27
30
32
35
38
42
44
45
46
48
52
55
55
55
54
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
99%
98%
98%
98%
98%
98%
98%
98%
98%
97%
97%
96%
96%
96%
97%
93%
93%
95%
96%
96%
97%
97%
97%
97%
UV - - - - - - 1 1 1 1 1 1 1 1 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 Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Light rain Heavy shower day Light shower day Light shower day Light shower day Light shower day Light shower day Heavy shower day Light shower day Light shower day Light shower day Light shower night Light shower night Light shower night Light shower night Light shower night
Chance of precipitation
80%
80%
80%
80%
90%
90%
80%
80%
80%
80%
70%
80%
80%
80%
80%
80%
80%
70%
70%
60%
70%
60%
60%
50%
Temperature (°C)
Feels like temperature (°C)
-4°
-4°
-4°
-4°
-5°
-5°
-5°
-5°
-5°
-4°
-3°
-3°
-3°
-2°
-2°
-2°
-2°
-2°
-3°
-3°
-4°
-4°
-3°
-4°
Wind direction and speed (mph)
NW
47
NW
46
NW
44
NW
42
NW
41
NNW
40
NNW
40
NNW
38
NNW
35
NNW
32
NNW
32
NNW
33
NNW
33
NNW
33
NNW
32
NNW
32
N
32
N
32
N
33
N
33
N
33
NNE
31
N
29
N
30
Wind gust (mph)
52
51
49
47
45
44
44
42
38
35
36
36
36
36
35
35
35
36
36
36
36
35
33
33
Visibility (description)
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
VP
P
VP
P
VG
E
E
VG
E
E
VG
VG
E
E
Humidity
97%
96%
96%
96%
96%
97%
97%
97%
96%
94%
92%
90%
88%
87%
86%
85%
85%
87%
87%
86%
86%
87%
87%
88%
UV - - - - - - - 1 1 1 2 2 2 2 3 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 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
50%
40%
40%
30%
30%
30%
30%
30%
20%
20%
20%
10%
10%
10%
10%
20%
10%
10%
10%
10%
10%
20%
20%
20%
Temperature (°C)
Feels like temperature (°C)
-4°
-4°
-4°
-4°
-4°
-4°
-4°
-4°
-4°
-3°
-2°
-2°
-1°
-1°
-1°
-1°
-2°
-3°
-3°
-3°
-3°
Wind direction and speed (mph)
NNE
29
NNE
28
NNE
27
NNE
26
NNE
25
NNE
25
NNE
25
NNE
24
NNE
24
NNE
25
NNE
26
NNE
27
N
27
N
27
N
27
N
26
N
30
N
29
N
25
N
20
N
17
NNE
15
NNE
17
NNE
16
Wind gust (mph)
32
31
30
29
28
28
28
27
28
28
30
30
30
30
29
33
33
32
28
22
18
19
19
18
Visibility (description)
E
E
E
E
E
E
E
E
VG
E
E
E
E
E
E
E
E
E
E
E
VG
VG
VG
VG
Humidity
87%
85%
85%
85%
86%
85%
85%
86%
86%
82%
76%
71%
66%
62%
59%
59%
60%
63%
66%
75%
78%
79%
81%
84%
UV - - - - - - - 1 1 1 2 3 3 3 3 2 2 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 Partly cloudy night Partly cloudy night Cloudy Cloudy Cloudy Sunny intervals Partly cloudy night Partly cloudy night
Chance of precipitation
20%
10%
10%
10%
10%
10%
10%
10%
<5%
Temperature (°C)
Feels like temperature (°C)
-3°
-3°
-4°
-4°
-1°
-4°
Wind direction and speed (mph)
NNE
15
NNE
14
NNE
12
NNE
12
N
20
NNE
23
N
23
N
16
NE
11
Wind gust (mph)
16
15
13
22
25
25
25
17
13
Visibility (description)
VG
VG
G
G
VG
VG
VG
VG
G
Humidity
85%
87%
90%
92%
75%
62%
62%
83%
93%
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)
Feels like temperature (°C)
-4°
-5°
-6°
-4°
Wind direction and speed (mph)
ESE
11
ESE
11
E
11
E
14
ENE
20
NNE
21
NE
15
E
13
Wind gust (mph)
13
13
15
22
23
23
16
14
Visibility (description)
G
G
G
VG
VG
VG
VG
G
Humidity
95%
96%
96%
79%
64%
63%
84%
92%
UV - - 1 2 3 1 1 -

UK video forecast

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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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