News
Wind and rain marking a change in the UK weather
Warnings have been issued as the weather across the UK becomes increasingly mild but wet and windy.
Read moreFan Brycheiniog (Powys) weather
Find a forecast
Forecast days
-
Maximum daytime temperature: 7° Celsius; Minimum nighttime temperature: 6° Celsius;
Maximum daytime temperature: 7° Celsius; Minimum nighttime temperature: 6° Celsius; -
Maximum daytime temperature: 7° Celsius; Minimum nighttime temperature: 2° Celsius;
Maximum daytime temperature: 7° Celsius; Minimum nighttime temperature: 2° Celsius; -
Maximum daytime temperature: 4° Celsius; Minimum nighttime temperature: 1° Celsius;
Maximum daytime temperature: 4° Celsius; Minimum nighttime temperature: 1° Celsius; -
Maximum daytime temperature: 8° Celsius; Minimum nighttime temperature: 6° Celsius;
Maximum daytime temperature: 8° Celsius; Minimum nighttime temperature: 6° Celsius;
-
Maximum daytime temperature: 8° Celsius; Minimum nighttime temperature: 1° Celsius;
Maximum daytime temperature: 8° Celsius; Minimum nighttime temperature: 1° Celsius;
-
Maximum daytime temperature: 5° Celsius; Minimum nighttime temperature: 1° Celsius;
Maximum daytime temperature: 5° Celsius; Minimum nighttime temperature: 1° Celsius; -
Maximum daytime temperature: 5° Celsius; Minimum nighttime temperature: -1° Celsius;
Maximum daytime temperature: 5° Celsius; Minimum nighttime temperature: -1° Celsius;
Light rain changing to fog by lunchtime.
Sunrise:
Sunset:
L UV
L Pollution
No pollen data.
7 day forecast for Fan Brycheiniog
Today (14 December 2025)
| Time |
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 |
20%
|
50%
|
70%
|
70%
|
60%
|
60%
|
50%
|
40%
|
50%
|
40%
|
40%
|
40%
|
50%
|
50%
|
50%
|
60%
|
60%
|
50%
|
60%
|
60%
|
| Temperature |
4°
|
4°
|
4°
|
4°
|
4°
|
4°
|
5°
|
5°
|
5°
|
5°
|
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
| Feels like temperature (°C) |
-3°
|
-3°
|
-3°
|
-3°
|
-2°
|
-2°
|
-2°
|
-2°
|
-1°
|
-1°
|
0°
|
0°
|
0°
|
0°
|
0°
|
0°
|
0°
|
0°
|
0°
|
0°
|
| Wind direction and speed |
SSW
34
|
SSW
33
|
SSW
33
|
SSW
33
|
SSW
33
|
SSW
32
|
SSW
33
|
SSW
33
|
SSW
33
|
SSW
33
|
SSW
33
|
SSW
36
|
SSW
37
|
S
37
|
S
36
|
S
37
|
S
36
|
S
37
|
S
37
|
S
36
|
| Wind gust (mph) |
37
|
37
|
36
|
36
|
36
|
36
|
37
|
37
|
36
|
37
|
39
|
40
|
40
|
40
|
40
|
40
|
40
|
40
|
40
|
40
|
| Visibility |
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
P
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
P
|
| Humidity |
99%
|
99%
|
100%
|
100%
|
100%
|
100%
|
99%
|
99%
|
98%
|
97%
|
97%
|
96%
|
96%
|
97%
|
97%
|
98%
|
98%
|
98%
|
98%
|
97%
|
| UV | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - |
Monday (15 December 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 |  |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
80%
|
90%
|
90%
|
90%
|
90%
|
≥95%
|
≥95%
|
≥95%
|
≥95%
|
≥95%
|
≥95%
|
≥95%
|
90%
|
90%
|
90%
|
90%
|
90%
|
90%
|
80%
|
70%
|
60%
|
60%
|
50%
|
50%
|
| Temperature (°C) |
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
6°
|
5°
|
5°
|
5°
|
5°
|
5°
|
5°
|
4°
|
| Feels like temperature (°C) |
0°
|
0°
|
0°
|
0°
|
1°
|
1°
|
1°
|
1°
|
1°
|
1°
|
1°
|
2°
|
2°
|
2°
|
2°
|
2°
|
1°
|
1°
|
1°
|
1°
|
1°
|
1°
|
1°
|
1°
|
| Wind direction and speed (mph) |
S
35
|
S
33
|
S
31
|
S
28
|
S
26
|
S
24
|
S
22
|
S
21
|
S
21
|
S
21
|
S
21
|
S
20
|
S
19
|
SSW
17
|
SSW
16
|
SW
15
|
W
14
|
WSW
14
|
WSW
14
|
WNW
14
|
WNW
14
|
NNW
12
|
NNW
10
|
NNW
10
|
| Wind gust (mph) |
38
|
36
|
35
|
31
|
29
|
27
|
26
|
27
|
27
|
26
|
26
|
25
|
22
|
22
|
20
|
18
|
17
|
16
|
17
|
16
|
15
|
14
|
14
|
13
|
| 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%
|
98%
|
98%
|
99%
|
99%
|
99%
|
99%
|
99%
|
99%
|
99%
|
99%
|
99%
|
99%
|
99%
|
99%
|
99%
|
99%
|
99%
|
99%
|
99%
|
99%
|
99%
|
99%
|
99%
|
| UV | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - |
Tuesday (16 December 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 | |
 |
|
|
|
|
|
 |
 |
|
|
|
|
|
 |
|
 |
|
|
|
|
|
|
|
| Chance of precipitation |
50%
|
40%
|
40%
|
40%
|
40%
|
30%
|
30%
|
20%
|
20%
|
20%
|
10%
|
10%
|
10%
|
10%
|
10%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
4°
|
4°
|
4°
|
4°
|
3°
|
3°
|
3°
|
3°
|
3°
|
2°
|
3°
|
3°
|
3°
|
4°
|
4°
|
3°
|
3°
|
2°
|
2°
|
2°
|
2°
|
1°
|
1°
|
1°
|
| Feels like temperature (°C) |
1°
|
0°
|
0°
|
0°
|
-1°
|
-1°
|
-2°
|
-2°
|
-2°
|
-2°
|
-2°
|
-1°
|
-1°
|
-1°
|
-1°
|
-1°
|
-2°
|
-2°
|
-2°
|
-2°
|
-2°
|
-3°
|
-3°
|
-3°
|
| Wind direction and speed (mph) |
NNW
11
|
N
11
|
N
11
|
N
11
|
N
11
|
NNW
11
|
NNW
12
|
N
12
|
N
12
|
NNW
12
|
NNW
12
|
NNW
12
|
NNW
13
|
NW
13
|
NW
13
|
NW
13
|
NW
12
|
NW
11
|
NW
10
|
WNW
9
|
W
9
|
W
9
|
WSW
10
|
SW
10
|
| Wind gust (mph) |
13
|
13
|
13
|
15
|
15
|
13
|
14
|
14
|
13
|
13
|
13
|
15
|
16
|
16
|
15
|
15
|
13
|
12
|
11
|
10
|
10
|
11
|
11
|
13
|
| Visibility (description) |
P
|
VP
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
E
|
| Humidity |
98%
|
98%
|
97%
|
97%
|
97%
|
97%
|
97%
|
97%
|
96%
|
96%
|
94%
|
92%
|
92%
|
89%
|
89%
|
92%
|
94%
|
93%
|
92%
|
92%
|
91%
|
89%
|
87%
|
88%
|
| UV | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - |
Wednesday (17 December 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 | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
10%
|
20%
|
30%
|
40%
|
60%
|
70%
|
70%
|
80%
|
90%
|
90%
|
90%
|
90%
|
80%
|
80%
|
70%
|
70%
|
60%
|
60%
|
60%
|
| Temperature (°C) |
2°
|
2°
|
2°
|
2°
|
2°
|
2°
|
2°
|
3°
|
3°
|
3°
|
4°
|
4°
|
5°
|
5°
|
5°
|
6°
|
6°
|
6°
|
7°
|
7°
|
7°
|
7°
|
7°
|
7°
|
| Feels like temperature (°C) |
-3°
|
-3°
|
-4°
|
-4°
|
-4°
|
-4°
|
-4°
|
-4°
|
-4°
|
-4°
|
-3°
|
-3°
|
-2°
|
-1°
|
-1°
|
-1°
|
0°
|
1°
|
1°
|
1°
|
1°
|
2°
|
2°
|
2°
|
| Wind direction and speed (mph) |
SW
12
|
SSW
13
|
SSW
15
|
SSW
16
|
SSW
18
|
SSW
21
|
SSW
23
|
SSW
26
|
SSW
28
|
S
30
|
SSW
31
|
SSW
33
|
SSW
33
|
SSW
33
|
SSW
32
|
SSW
33
|
SSW
32
|
SSW
30
|
SSW
29
|
SSW
28
|
SSW
27
|
SSW
25
|
SSW
24
|
SSW
23
|
| Wind gust (mph) |
14
|
16
|
18
|
20
|
23
|
26
|
28
|
30
|
33
|
35
|
36
|
37
|
37
|
36
|
37
|
37
|
35
|
33
|
32
|
32
|
31
|
30
|
28
|
27
|
| Visibility (description) |
E
|
E
|
E
|
E
|
E
|
E
|
VG
|
VG
|
VG
|
VG
|
P
|
P
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
| Humidity |
88%
|
87%
|
88%
|
92%
|
93%
|
93%
|
94%
|
96%
|
96%
|
95%
|
97%
|
98%
|
99%
|
99%
|
100%
|
100%
|
100%
|
100%
|
100%
|
100%
|
100%
|
100%
|
100%
|
99%
|
| UV | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - |
Thursday (18 December 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 | |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation |
60%
|
60%
|
60%
|
60%
|
70%
|
80%
|
80%
|
80%
|
80%
|
80%
|
80%
|
90%
|
90%
|
80%
|
70%
|
60%
|
60%
|
70%
|
70%
|
50%
|
40%
|
40%
|
40%
|
50%
|
| Temperature (°C) |
7°
|
7°
|
7°
|
7°
|
7°
|
7°
|
7°
|
7°
|
7°
|
7°
|
7°
|
7°
|
7°
|
7°
|
7°
|
7°
|
6°
|
6°
|
6°
|
5°
|
5°
|
4°
|
4°
|
4°
|
| Feels like temperature (°C) |
2°
|
2°
|
2°
|
2°
|
2°
|
2°
|
2°
|
2°
|
2°
|
2°
|
2°
|
2°
|
2°
|
2°
|
2°
|
1°
|
1°
|
1°
|
1°
|
0°
|
0°
|
-1°
|
-2°
|
-2°
|
| Wind direction and speed (mph) |
SSW
22
|
SSW
22
|
SSW
23
|
S
23
|
S
23
|
S
23
|
S
23
|
S
23
|
S
24
|
S
24
|
S
25
|
S
26
|
SSW
25
|
SSW
23
|
SSW
23
|
SSW
25
|
SW
24
|
SSW
23
|
SW
22
|
SW
22
|
SW
20
|
SW
21
|
SW
21
|
WSW
20
|
| Wind gust (mph) |
27
|
29
|
29
|
27
|
28
|
29
|
31
|
29
|
36
|
36
|
37
|
36
|
34
|
26
|
27
|
29
|
29
|
34
|
34
|
32
|
29
|
25
|
25
|
27
|
| Visibility (description) |
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
VP
|
P
|
P
|
G
|
G
|
G
|
| Humidity |
100%
|
100%
|
99%
|
99%
|
100%
|
99%
|
99%
|
99%
|
99%
|
99%
|
99%
|
98%
|
98%
|
98%
|
97%
|
97%
|
97%
|
97%
|
97%
|
96%
|
96%
|
95%
|
95%
|
95%
|
| UV | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - |
Friday (19 December 2025)
| Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
40%
|
30%
|
40%
|
30%
|
20%
|
20%
|
10%
|
20%
|
| Temperature (°C) |
4°
|
3°
|
2°
|
2°
|
4°
|
4°
|
2°
|
2°
|
| Feels like temperature (°C) |
-2°
|
-3°
|
-3°
|
-3°
|
-1°
|
-1°
|
-2°
|
-3°
|
| Wind direction and speed (mph) |
WSW
20
|
WSW
17
|
WSW
16
|
WSW
14
|
WSW
16
|
WSW
16
|
SW
14
|
SSW
15
|
| Wind gust (mph) |
26
|
22
|
22
|
25
|
26
|
21
|
20
|
22
|
| Visibility (description) |
G
|
G
|
G
|
G
|
G
|
VG
|
G
|
G
|
| Humidity |
94%
|
92%
|
92%
|
92%
|
87%
|
86%
|
92%
|
93%
|
| UV | - | - | - | 1 | 1 | 1 | - | - |
Saturday (20 December 2025)
| Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
30%
|
40%
|
40%
|
40%
|
40%
|
30%
|
30%
|
30%
|
| Temperature (°C) |
2°
|
2°
|
3°
|
3°
|
4°
|
4°
|
2°
|
2°
|
| Feels like temperature (°C) |
-3°
|
-3°
|
-2°
|
-2°
|
-1°
|
-1°
|
-3°
|
-3°
|
| Wind direction and speed (mph) |
S
16
|
S
15
|
S
14
|
S
15
|
SSW
16
|
SSW
16
|
S
13
|
SSW
13
|
| Wind gust (mph) |
24
|
29
|
24
|
24
|
24
|
20
|
16
|
15
|
| Visibility (description) |
G
|
G
|
G
|
G
|
G
|
G
|
G
|
G
|
| Humidity |
93%
|
94%
|
94%
|
94%
|
91%
|
92%
|
94%
|
96%
|
| UV | - | - | - | 1 | 1 | 1 | - | - |
Tooltip header
Fan Brycheiniog weather map
View the weather with our interactive map
Loading map...
WARNING
Flood alerts in force for Wales
Flood alerts in force for Wales
Wales weather forecast
Headline:
Dry but increasingly cloudy. Becoming wet and windy.
This Evening and Tonight:
Mainly dry this evening but becoming increasingly cloudy and windy overnight with rain moving across Anglesey during the early hours. Could be heavy at times on high ground but milder than Friday night and staying frost free. Minimum temperature 4 °C.
Sunday:
A cloudier and breezier day compared to Saturday with rain moving into the west and north. Some glimmers of sunshine possible in the east. Slightly milder than Saturday. Maximum temperature 12 °C.
Outlook for Monday to Wednesday:
Heavy rain moving in on Monday with strong winds. Drier on Tuesday with winds easing. A chilly start to Wednesday, but becoming wet and windy again later.
Updated:
UK long range weather forecast
Nearest forecasts
- Llyn Y Fan Fawr 0.3 miles
- Dan Yr Ogof Ski Centre 3.2 miles
- Llanddeusant Youth Hostel 3.6 miles
- Crai Reservoir 3.6 miles
- Fan Gyhirych 3.8 miles
- Craig Y Nos Country Park 4.0 miles
- Glasfynydd (Usk Reservoir) 4.3 miles
- Glasfynydd Family Mountain Bike Route 4.4 miles
- Abercraf 5.6 miles
- Garreg Lwyd 5.8 miles