Grib Nantlle (Nantlle Ridge) Y Garn (Gwynedd) weather
Find a forecast
Forecast days
-
Maximum daytime temperature: 12° Celsius; Minimum nighttime temperature: 8° Celsius;
Maximum daytime temperature: 12 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius; -
Maximum daytime temperature: 13° Celsius; Minimum nighttime temperature: 11° Celsius;
Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius; -
Maximum daytime temperature: 15° Celsius; Minimum nighttime temperature: 9° Celsius;
Maximum daytime temperature: 15 degrees Celsius; Minimum nighttime temperature: 9 degrees Celsius; -
Maximum daytime temperature: 10° Celsius; Minimum nighttime temperature: 6° Celsius;
Maximum daytime temperature: 10 degrees Celsius; Minimum nighttime temperature: 6 degrees Celsius; -
Maximum daytime temperature: 13° Celsius; Minimum nighttime temperature: 9° Celsius;
Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 9 degrees Celsius;
-
Maximum daytime temperature: 13° Celsius; Minimum nighttime temperature: 8° Celsius;
Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius;
-
Maximum daytime temperature: 13° Celsius; Minimum nighttime temperature: 8° Celsius;
Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius;
7 day forecast for Grib Nantlle (Nantlle Ridge) Y Garn
Today (20 September 2026)
| Time |
13:00
|
14:00
|
15:00
|
16:00
|
17:00
|
18:00
|
19:00
|
20:00
|
21:00
|
22:00
|
23:00
|
|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols |  |
|
|
|
|
|
 |
|
|
|
 |
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature |
10°
|
11°
|
10°
|
10°
|
10°
|
9°
|
8°
|
7°
|
8°
|
8°
|
8°
|
| Feels like temperature (°C) |
8°
|
8°
|
8°
|
8°
|
8°
|
7°
|
6°
|
5°
|
5°
|
5°
|
5°
|
| Wind direction and speed |
WNW
11
|
WNW
11
|
WNW
11
|
W
11
|
W
9
|
W
9
|
WSW
7
|
S
7
|
SSE
8
|
SSE
9
|
SSE
9
|
| Wind gust (mph) |
19
|
18
|
17
|
15
|
13
|
11
|
10
|
10
|
12
|
12
|
13
|
| Visibility |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
66%
|
64%
|
64%
|
64%
|
65%
|
69%
|
84%
|
82%
|
80%
|
78%
|
78%
|
| UV | 4 | 3 | 3 | 2 | 1 | 1 | 1 | - | - | - | - |
Monday (21 September 2026)
| 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 | |
|
|
|
|
|
|
 |
|
 |
|
 |
|
|
|
|
 |
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
10%
|
10%
|
10%
|
<5%
|
10%
|
10%
|
10%
|
10%
|
10%
|
| Temperature (°C) |
8°
|
8°
|
8°
|
8°
|
8°
|
8°
|
8°
|
8°
|
8°
|
10°
|
10°
|
11°
|
11°
|
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
11°
|
11°
|
11°
|
11°
|
11°
|
| Feels like temperature (°C) |
5°
|
5°
|
5°
|
5°
|
5°
|
5°
|
6°
|
6°
|
6°
|
7°
|
8°
|
8°
|
9°
|
9°
|
10°
|
10°
|
10°
|
10°
|
10°
|
9°
|
10°
|
9°
|
9°
|
9°
|
| Wind direction and speed (mph) |
SE
9
|
SE
9
|
SE
10
|
SE
10
|
SE
11
|
SE
11
|
SSE
11
|
SE
11
|
SSE
11
|
SSE
11
|
S
11
|
S
11
|
S
11
|
S
11
|
S
11
|
S
11
|
S
11
|
S
11
|
S
10
|
SSE
10
|
SSE
9
|
SSE
9
|
SSE
9
|
SSE
9
|
| Wind gust (mph) |
12
|
14
|
14
|
14
|
15
|
15
|
15
|
15
|
16
|
16
|
17
|
17
|
17
|
17
|
17
|
16
|
15
|
14
|
13
|
13
|
13
|
13
|
13
|
13
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
M
|
M
|
M
|
M
|
M
|
P
|
P
|
P
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
| Humidity |
78%
|
79%
|
79%
|
80%
|
82%
|
82%
|
82%
|
83%
|
82%
|
81%
|
81%
|
82%
|
83%
|
85%
|
85%
|
86%
|
88%
|
90%
|
92%
|
95%
|
96%
|
97%
|
97%
|
97%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 3 | 3 | 3 | 3 | 2 | 1 | 1 | 1 | 1 | - | - | - | - |
Tuesday (22 September 2026)
| 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 | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
10%
|
10%
|
10%
|
20%
|
20%
|
20%
|
20%
|
20%
|
30%
|
20%
|
20%
|
20%
|
30%
|
30%
|
20%
|
10%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
11°
|
11°
|
11°
|
11°
|
11°
|
11°
|
11°
|
11°
|
11°
|
11°
|
12°
|
12°
|
13°
|
13°
|
13°
|
14°
|
13°
|
13°
|
13°
|
12°
|
11°
|
11°
|
11°
|
11°
|
| Feels like temperature (°C) |
10°
|
9°
|
9°
|
9°
|
9°
|
10°
|
9°
|
9°
|
10°
|
10°
|
10°
|
11°
|
12°
|
11°
|
12°
|
12°
|
12°
|
12°
|
12°
|
10°
|
10°
|
9°
|
9°
|
9°
|
| Wind direction and speed (mph) |
SSE
9
|
SSE
9
|
SSE
9
|
S
9
|
S
9
|
S
8
|
S
8
|
S
8
|
S
7
|
SSW
8
|
SSW
9
|
SSW
9
|
SSW
9
|
SSW
10
|
SSW
9
|
SW
9
|
SW
9
|
SW
8
|
SSW
8
|
SSE
9
|
SSE
9
|
SSE
9
|
SSE
9
|
SSE
9
|
| Wind gust (mph) |
13
|
13
|
13
|
13
|
12
|
12
|
12
|
12
|
12
|
12
|
13
|
13
|
14
|
14
|
14
|
13
|
12
|
11
|
10
|
10
|
10
|
10
|
11
|
13
|
| Visibility (description) |
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
P
|
P
|
P
|
M
|
M
|
M
|
M
|
P
|
P
|
P
|
P
|
| Humidity |
97%
|
97%
|
98%
|
98%
|
98%
|
98%
|
98%
|
97%
|
96%
|
93%
|
93%
|
90%
|
89%
|
87%
|
85%
|
84%
|
84%
|
85%
|
87%
|
92%
|
91%
|
91%
|
91%
|
92%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 2 | 3 | 3 | 2 | 2 | 1 | 1 | 1 | 1 | - | - | - | - |
Wednesday (23 September 2026)
| 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 | |
|
|
|
|
|
 |
|
 |
 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
10%
|
10%
|
20%
|
30%
|
40%
|
70%
|
70%
|
70%
|
70%
|
50%
|
40%
|
30%
|
10%
|
10%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
11°
|
11°
|
11°
|
10°
|
11°
|
11°
|
10°
|
10°
|
10°
|
9°
|
9°
|
9°
|
9°
|
9°
|
9°
|
9°
|
9°
|
9°
|
9°
|
8°
|
7°
|
7°
|
7°
|
7°
|
| Feels like temperature (°C) |
9°
|
9°
|
8°
|
8°
|
8°
|
8°
|
8°
|
8°
|
7°
|
6°
|
7°
|
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
5°
|
5°
|
5°
|
4°
|
4°
|
| Wind direction and speed (mph) |
SSE
9
|
S
9
|
S
10
|
SSW
11
|
SSW
10
|
SSW
10
|
SW
11
|
SW
11
|
WSW
13
|
WNW
13
|
NW
13
|
NW
14
|
NW
14
|
NNW
14
|
NNW
16
|
NNW
16
|
NNW
15
|
NNW
13
|
NNW
11
|
NNW
9
|
N
9
|
NE
8
|
NNE
8
|
SE
8
|
| Wind gust (mph) |
13
|
13
|
15
|
15
|
16
|
17
|
19
|
22
|
23
|
25
|
23
|
24
|
25
|
23
|
23
|
23
|
21
|
20
|
16
|
13
|
13
|
11
|
10
|
9
|
| Visibility (description) |
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
P
|
P
|
M
|
M
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
G
|
| Humidity |
94%
|
96%
|
96%
|
96%
|
96%
|
97%
|
96%
|
96%
|
97%
|
96%
|
95%
|
92%
|
87%
|
81%
|
74%
|
71%
|
69%
|
71%
|
74%
|
82%
|
84%
|
84%
|
84%
|
83%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 3 | 3 | 3 | 3 | 2 | 1 | 1 | 1 | 1 | - | - | - | - |
Thursday (24 September 2026)
| 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 | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
<5%
|
<5%
|
<5%
|
10%
|
10%
|
20%
|
| Temperature (°C) |
7°
|
7°
|
7°
|
6°
|
7°
|
7°
|
7°
|
7°
|
7°
|
9°
|
10°
|
11°
|
11°
|
12°
|
12°
|
12°
|
12°
|
12°
|
12°
|
11°
|
11°
|
11°
|
11°
|
10°
|
| Feels like temperature (°C) |
4°
|
4°
|
4°
|
3°
|
3°
|
3°
|
4°
|
3°
|
4°
|
6°
|
7°
|
8°
|
8°
|
9°
|
9°
|
9°
|
9°
|
9°
|
9°
|
8°
|
8°
|
8°
|
7°
|
7°
|
| Wind direction and speed (mph) |
SE
9
|
SE
9
|
SE
9
|
SE
10
|
SE
10
|
SE
11
|
SE
11
|
SE
13
|
SE
13
|
SE
11
|
SSE
13
|
S
16
|
S
17
|
S
18
|
S
19
|
S
19
|
S
18
|
S
18
|
S
17
|
S
17
|
S
16
|
S
16
|
S
16
|
S
17
|
| Wind gust (mph) |
9
|
10
|
10
|
11
|
12
|
13
|
14
|
16
|
17
|
20
|
23
|
25
|
26
|
26
|
27
|
26
|
25
|
23
|
21
|
21
|
20
|
20
|
21
|
22
|
| Visibility (description) |
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
G
|
G
|
M
|
M
|
M
|
M
|
M
|
P
|
P
|
| Humidity |
84%
|
84%
|
83%
|
83%
|
82%
|
81%
|
79%
|
78%
|
77%
|
74%
|
72%
|
69%
|
68%
|
70%
|
69%
|
73%
|
74%
|
75%
|
80%
|
85%
|
87%
|
88%
|
88%
|
90%
|
| UV | - | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 3 | 3 | 3 | 3 | 2 | 1 | 1 | 1 | 1 | - | - | - | - |
Friday (25 September 2026)
| Time |
00:00
|
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
 |
|
|
|
|
| Chance of precipitation |
20%
|
30%
|
30%
|
30%
|
30%
|
20%
|
20%
|
10%
|
10%
|
| Temperature (°C) |
10°
|
10°
|
10°
|
9°
|
10°
|
12°
|
12°
|
9°
|
8°
|
| Feels like temperature (°C) |
7°
|
7°
|
7°
|
6°
|
8°
|
9°
|
10°
|
7°
|
6°
|
| Wind direction and speed (mph) |
S
17
|
S
16
|
SSW
14
|
SSW
13
|
SW
13
|
SW
13
|
WSW
11
|
SSW
11
|
S
10
|
| Wind gust (mph) |
22
|
22
|
19
|
17
|
18
|
17
|
14
|
12
|
11
|
| Visibility (description) |
P
|
VP
|
VP
|
VP
|
P
|
M
|
M
|
P
|
P
|
| Humidity |
91%
|
92%
|
93%
|
94%
|
89%
|
78%
|
75%
|
89%
|
95%
|
| UV | - | - | - | 1 | 1 | 3 | 1 | 1 | - |
Saturday (26 September 2026)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
10%
|
20%
|
20%
|
20%
|
20%
|
30%
|
30%
|
20%
|
| Temperature (°C) |
8°
|
8°
|
8°
|
10°
|
12°
|
11°
|
10°
|
8°
|
| Feels like temperature (°C) |
5°
|
5°
|
4°
|
7°
|
9°
|
9°
|
7°
|
5°
|
| Wind direction and speed (mph) |
SSE
11
|
SSE
11
|
SSE
11
|
SSE
13
|
SSW
13
|
SW
13
|
SSW
13
|
S
13
|
| Wind gust (mph) |
13
|
12
|
13
|
15
|
17
|
16
|
14
|
15
|
| Visibility (description) |
P
|
VP
|
P
|
P
|
M
|
M
|
P
|
P
|
| Humidity |
95%
|
96%
|
96%
|
87%
|
75%
|
78%
|
89%
|
93%
|
| UV | - | - | 1 | 2 | 3 | 1 | 1 | - |
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Wales weather forecast
Headline:
A fine end to the weekend.
Today:
A fine day today with lighter winds and plenty of sunny spells. The sunshine may turn hazy at times, but staying bright and feeling warm in the sunshine. Maximum temperature 19 °C.
Tonight:
Staying dry with clear spells at first tonight. Cloud will thicken in the early hours, particularly in the north and west. Minimum temperature 6 °C.
Monday:
A partly cloudy day but remaining dry across Wales. Some bright spells are likely at times, particularly in the south, and feeling warm. Maximum temperature 21 °C.
Outlook for Tuesday to Thursday:
Warm sunny spells and light winds on Tuesday. Heavy rain moves through on Wednesday, and feeling fresher. Dry with sunny spells on Thursday.
Updated: