Ystrad Mynach (Caerphilly) weather
Find a forecast
Forecast days
-
Maximum daytime temperature: 22° Celsius; Minimum nighttime temperature: 7° Celsius;
Maximum daytime temperature: 22° Celsius; Minimum nighttime temperature: 7° Celsius; -
Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 8° Celsius;
Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 8° Celsius;
-
Maximum daytime temperature: 21° Celsius; Minimum nighttime temperature: 8° Celsius;
Maximum daytime temperature: 21° Celsius; Minimum nighttime temperature: 8° Celsius;
-
Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 7° Celsius;
Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 7° Celsius; -
Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 8° Celsius;
Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 8° Celsius;
-
Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 9° Celsius;
Maximum daytime temperature: 20° Celsius; Minimum nighttime temperature: 9° Celsius;
-
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 9° Celsius;
Maximum daytime temperature: 19° Celsius; Minimum nighttime temperature: 9° Celsius;
-
Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 8° Celsius;
Maximum daytime temperature: 18° Celsius; Minimum nighttime temperature: 8° Celsius;
8 day forecast for Ystrad Mynach
Today (16 May 2025)
| Time |
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%
|
| Temperature |
21°
|
21°
|
20°
|
19°
|
17°
|
15°
|
14°
|
13°
|
| Feels like temperature (°C) |
19°
|
19°
|
18°
|
17°
|
16°
|
14°
|
13°
|
12°
|
| Wind direction and speed |
NE
6
|
NE
7
|
NE
7
|
NE
7
|
NNE
6
|
NE
6
|
NE
6
|
NE
6
|
| Wind gust (mph) |
19
|
20
|
20
|
18
|
16
|
15
|
16
|
16
|
| Visibility |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
40%
|
41%
|
41%
|
43%
|
57%
|
55%
|
57%
|
63%
|
| UV | 3 | 2 | 1 | 1 | 1 | - | - | - |
Saturday (17 May 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%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
11°
|
10°
|
9°
|
8°
|
8°
|
8°
|
8°
|
8°
|
10°
|
11°
|
13°
|
14°
|
15°
|
17°
|
18°
|
18°
|
19°
|
19°
|
19°
|
19°
|
17°
|
14°
|
13°
|
12°
|
| Feels like temperature (°C) |
10°
|
9°
|
8°
|
7°
|
7°
|
6°
|
6°
|
7°
|
8°
|
10°
|
11°
|
13°
|
14°
|
15°
|
16°
|
17°
|
18°
|
18°
|
18°
|
18°
|
17°
|
13°
|
12°
|
11°
|
| Wind direction and speed (mph) |
NNE
5
|
NNE
5
|
NE
5
|
NE
4
|
ENE
4
|
ENE
4
|
ENE
5
|
ENE
6
|
ENE
7
|
ENE
7
|
ENE
7
|
ENE
7
|
ENE
7
|
ENE
6
|
E
5
|
E
5
|
E
4
|
E
4
|
ESE
4
|
SE
4
|
SE
4
|
NNE
4
|
NE
4
|
NE
4
|
| Wind gust (mph) |
14
|
12
|
12
|
10
|
10
|
13
|
16
|
19
|
19
|
18
|
18
|
18
|
17
|
16
|
14
|
11
|
9
|
11
|
11
|
11
|
8
|
9
|
9
|
10
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
G
|
G
|
G
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
67%
|
72%
|
76%
|
82%
|
85%
|
85%
|
85%
|
83%
|
75%
|
74%
|
66%
|
63%
|
57%
|
54%
|
48%
|
42%
|
40%
|
40%
|
40%
|
46%
|
67%
|
68%
|
65%
|
64%
|
| UV | - | - | - | - | - | 1 | 1 | 1 | 2 | 3 | 4 | 6 | 6 | 6 | 6 | 5 | 3 | 2 | 1 | 1 | 1 | 1 | - | - |
Sunday (18 May 2025)
| Time |
00:00
|
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
<5%
|
| Temperature (°C) |
12°
|
11°
|
9°
|
10°
|
16°
|
19°
|
21°
|
19°
|
14°
|
| Feels like temperature (°C) |
11°
|
10°
|
8°
|
10°
|
15°
|
18°
|
19°
|
18°
|
13°
|
| Wind direction and speed (mph) |
NNE
4
|
NNE
4
|
NNE
5
|
NE
3
|
ENE
5
|
ENE
5
|
NE
5
|
SSE
6
|
NE
5
|
| Wind gust (mph) |
10
|
12
|
12
|
13
|
13
|
13
|
14
|
14
|
12
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
E
|
VG
|
VG
|
| Humidity |
66%
|
67%
|
76%
|
76%
|
57%
|
40%
|
40%
|
47%
|
59%
|
| UV | - | - | - | 1 | 4 | 7 | 3 | 1 | - |
Monday (19 May 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
10%
|
10%
|
10%
|
30%
|
20%
|
10%
|
<5%
|
| Temperature (°C) |
11°
|
9°
|
10°
|
14°
|
18°
|
19°
|
18°
|
14°
|
| Feels like temperature (°C) |
10°
|
8°
|
8°
|
12°
|
16°
|
17°
|
16°
|
12°
|
| Wind direction and speed (mph) |
ENE
5
|
ENE
5
|
ENE
6
|
E
8
|
ESE
8
|
ENE
7
|
NE
7
|
NE
6
|
| Wind gust (mph) |
11
|
15
|
20
|
22
|
20
|
18
|
16
|
15
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
E
|
E
|
E
|
| Humidity |
64%
|
76%
|
76%
|
63%
|
44%
|
43%
|
46%
|
56%
|
| UV | - | - | 1 | 4 | 6 | 3 | 1 | - |
Tuesday (20 May 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
<5%
|
<5%
|
<5%
|
20%
|
20%
|
10%
|
<5%
|
<5%
|
| Temperature (°C) |
11°
|
9°
|
10°
|
15°
|
18°
|
19°
|
18°
|
13°
|
| Feels like temperature (°C) |
10°
|
8°
|
9°
|
14°
|
17°
|
18°
|
17°
|
13°
|
| Wind direction and speed (mph) |
NE
6
|
NE
4
|
NE
4
|
ENE
6
|
ENE
6
|
WSW
6
|
WNW
7
|
NW
4
|
| Wind gust (mph) |
13
|
10
|
14
|
15
|
14
|
15
|
13
|
8
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
E
|
E
|
E
|
VG
|
| Humidity |
69%
|
77%
|
75%
|
55%
|
44%
|
40%
|
45%
|
65%
|
| UV | - | - | 1 | 4 | 6 | 3 | 1 | - |
Wednesday (21 May 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
|
|
|
| Chance of precipitation |
10%
|
10%
|
10%
|
20%
|
20%
|
10%
|
10%
|
10%
|
| Temperature (°C) |
11°
|
10°
|
11°
|
16°
|
18°
|
19°
|
18°
|
14°
|
| Feels like temperature (°C) |
11°
|
9°
|
11°
|
15°
|
16°
|
17°
|
16°
|
13°
|
| Wind direction and speed (mph) |
NNW
3
|
NW
3
|
NNW
2
|
WSW
5
|
SW
8
|
WNW
8
|
WNW
8
|
NW
5
|
| Wind gust (mph) |
5
|
4
|
10
|
17
|
18
|
18
|
16
|
11
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
VG
|
| Humidity |
73%
|
77%
|
68%
|
53%
|
44%
|
43%
|
45%
|
61%
|
| UV | - | - | 1 | 4 | 6 | 3 | 1 | - |
Thursday (22 May 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
|
|
|
|
 |
|
|
| Chance of precipitation |
20%
|
20%
|
20%
|
20%
|
20%
|
30%
|
30%
|
30%
|
| Temperature (°C) |
12°
|
10°
|
11°
|
15°
|
17°
|
17°
|
16°
|
14°
|
| Feels like temperature (°C) |
11°
|
9°
|
10°
|
13°
|
15°
|
16°
|
14°
|
13°
|
| Wind direction and speed (mph) |
NW
5
|
WNW
5
|
WNW
6
|
WSW
8
|
W
10
|
W
9
|
WNW
9
|
WNW
6
|
| Wind gust (mph) |
8
|
6
|
13
|
20
|
21
|
20
|
18
|
12
|
| Visibility (description) |
VG
|
VG
|
VG
|
VG
|
VG
|
G
|
VG
|
VG
|
| Humidity |
75%
|
83%
|
78%
|
69%
|
54%
|
56%
|
59%
|
77%
|
| UV | - | - | 1 | 4 | 6 | 2 | 1 | - |
Friday (23 May 2025)
| Time |
01:00
|
04:00
|
07:00
|
10:00
|
13:00
|
16:00
|
19:00
|
22:00
|
|---|---|---|---|---|---|---|---|---|
| Weather symbols | |
 |
 |
|
|
|
|
|
| Chance of precipitation |
40%
|
40%
|
50%
|
40%
|
30%
|
20%
|
20%
|
20%
|
| Temperature (°C) |
11°
|
11°
|
11°
|
14°
|
16°
|
16°
|
15°
|
13°
|
| Feels like temperature (°C) |
10°
|
9°
|
10°
|
13°
|
14°
|
14°
|
13°
|
12°
|
| Wind direction and speed (mph) |
W
6
|
W
6
|
WSW
6
|
WSW
9
|
W
10
|
W
10
|
W
9
|
W
6
|
| Wind gust (mph) |
8
|
8
|
13
|
19
|
20
|
19
|
17
|
13
|
| Visibility (description) |
G
|
G
|
G
|
G
|
G
|
G
|
VG
|
VG
|
| Humidity |
88%
|
91%
|
90%
|
85%
|
62%
|
57%
|
64%
|
78%
|
| UV | - | - | 1 | 3 | 5 | 2 | 1 | - |
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Wales weather forecast
Headline:
Staying dry and often sunny. Warm days and cool nights.
This Evening and Tonight:
Staying sunny and warm into this evening, then clear skies at first overnight. Probably turning cloudier in the east later. Turning chilly where skies stay clear, with a frost possible in very prone inland and rural spots in the north. Minimum temperature 2 °C.
Saturday:
A cloudy and cool start for some but sunshine for western areas. Brightening up in the east with plenty of strong sunshine by the afternoon. Feeling warm with light winds. Maximum temperature 21 °C.
Outlook for Sunday to Tuesday:
Most places remaining dry through this period. Whilst some cloud is likely at times, there'll also be plenty of warm sunshine. Small chance of isolated showers on Monday and Tuesday.
Updated: