News
Over half of public making low-carbon decisions
Polling by the Met Office shows that over half the British public are consciously making low-carbon choices, with nearly two thirds wanting to do more.
Read moreYstrad Mynach (Caerphilly) weather
Find a forecast
Forecast days
-
Today. Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 7 degrees Celsius. Sunny intervals changing to heavy showers by late morning. Sunrise: 06:10; Sunset: 18:30. UV: Moderate; Pollution: Low; Pollen: Moderate.Today. Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 7 degrees Celsius. Sunny intervals changing to heavy showers by late morning. Sunrise: 06:10; Sunset: 18:30. UV: Moderate; Pollution: Low; Pollen: Moderate.
-
Friday 24 March. Maximum daytime temperature: 11 degrees Celsius; Minimum nighttime temperature: 7 degrees Celsius. Partly cloudy changing to light showers by late morning. Sunrise: 06:08; Sunset: 18:32. UV: Moderate; Pollution: Low; Pollen: Moderate.Friday 24 March. Maximum daytime temperature: 11 degrees Celsius; Minimum nighttime temperature: 7 degrees Celsius. Partly cloudy changing to light showers by late morning. Sunrise: 06:08; Sunset: 18:32. UV: Moderate; Pollution: Low; Pollen: Moderate.
-
Saturday 25 March. Maximum daytime temperature: 11 degrees Celsius; Minimum nighttime temperature: 5 degrees Celsius. Cloudy changing to light showers by late morning. Sunrise: 06:05; Sunset: 18:34. UV: Moderate; Pollution: Low; Pollen: Moderate.Saturday 25 March. Maximum daytime temperature: 11 degrees Celsius; Minimum nighttime temperature: 5 degrees Celsius. Cloudy changing to light showers by late morning. Sunrise: 06:05; Sunset: 18:34. UV: Moderate; Pollution: Low; Pollen: Moderate.
-
Sunday 26 March. Maximum daytime temperature: 10 degrees Celsius; Minimum nighttime temperature: 0 degrees Celsius. Light rain changing to cloudy by late morning. Sunrise: 07:03; Sunset: 19:35. UV: Moderate; Pollution: Low; Pollen: Moderate.Sunday 26 March. Maximum daytime temperature: 10 degrees Celsius; Minimum nighttime temperature: 0 degrees Celsius. Light rain changing to cloudy by late morning. Sunrise: 07:03; Sunset: 19:35. UV: Moderate; Pollution: Low; Pollen: Moderate.
-
Monday 27 March. Maximum daytime temperature: 9 degrees Celsius; Minimum nighttime temperature: 0 degrees Celsius. Clear changing to cloudy by lunchtime. Sunrise: 07:01; Sunset: 19:37. UV: Moderate; No pollen data.Monday 27 March. Maximum daytime temperature: 9 degrees Celsius; Minimum nighttime temperature: 0 degrees Celsius. Clear changing to cloudy by lunchtime. Sunrise: 07:01; Sunset: 19:37. UV: Moderate; No pollen data.
-
Tuesday 28 March. Maximum daytime temperature: 8 degrees Celsius; Minimum nighttime temperature: 5 degrees Celsius. Cloudy. Sunrise: 06:58; Sunset: 19:39. UV: Low;Tuesday 28 March. Maximum daytime temperature: 8 degrees Celsius; Minimum nighttime temperature: 5 degrees Celsius. Cloudy. Sunrise: 06:58; Sunset: 19:39. UV: Low;
Six day forecast for Ystrad Mynach
| 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 symbol |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Chance of precipitation
|
<5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | 10% | 60% | 50% | 10% | 10% | 50% | 50% | 50% | 80% | 60% | 10% | 30% | 40% | 40% | 60% |
|
|
8°
|
8°
|
7°
|
7°
|
7°
|
7°
|
7°
|
7°
|
9°
|
10°
|
10°
|
11°
|
12°
|
12°
|
11°
|
11°
|
10°
|
10°
|
9°
|
9°
|
9°
|
9°
|
8°
|
8°
|
|
|
5° | 5° | 5° | 4° | 4° | 4° | 4° | 4° | 6° | 7° | 7° | 8° | 9° | 9° | 8° | 8° | 8° | 7° | 7° | 6° | 6° | 6° | 6° | 5° |
|
|
WSW
12
|
WSW
11
|
SW
8
|
SW
9
|
SSW
10
|
SSW
10
|
SSW
10
|
SSW
11
|
SSW
13
|
SW
15
|
SW
16
|
SW
16
|
SW
14
|
SW
15
|
SW
14
|
SSW
12
|
SSW
11
|
SSW
10
|
SSW
9
|
SW
9
|
SW
10
|
SW
12
|
SW
11
|
SW
12
|
|
|
29 | 27 | 23 | 25 | 26 | 27 | 28 | 29 | 29 | 31 | 32 | 33 | 30 | 30 | 29 | 24 | 23 | 22 | 20 | 22 | 24 | 26 | 25 | 27 |
|
|
VG | VG | VG | VG | G | G | G | G | G | VG | VG | VG | VG | VG | VG | G | G | G | G | G | G | VG | VG | VG |
|
Humidity
|
86% | 88% | 87% | 88% | 89% | 88% | 86% | 85% | 85% | 82% | 79% | 73% | 71% | 67% | 74% | 78% | 80% | 84% | 86% | 88% | 88% | 86% | 87% | 88% |
|
UV
|
- | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 2 | 3 | 2 | 2 | 1 | 1 | 1 | 1 | - | - | - | - | - |
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
|
Chance of precipitation
|
10% | 10% | 10% | 60% | 70% | 60% | 60% | 30% |
|
|
8°
|
7°
|
7°
|
9°
|
10°
|
10°
|
9°
|
8°
|
|
|
5° | 4° | 4° | 6° | 7° | 6° | 5° | 4° |
|
|
SW
13
|
WSW
11
|
SW
12
|
SW
13
|
SW
18
|
WSW
19
|
WSW
19
|
WSW
18
|
|
|
29 | 26 | 26 | 27 | 36 | 39 | 37 | 36 |
|
|
VG | VG | VG | VG | VG | VG | VG | VG |
|
Humidity
|
88% | 87% | 88% | 81% | 77% | 78% | 84% | 85% |
|
UV
|
- | - | - | 1 | 3 | 2 | 1 | - |
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
|
Chance of precipitation
|
40% | 40% | 20% | 30% | 30% | 10% | 10% | 10% |
|
|
8°
|
7°
|
7°
|
9°
|
11°
|
11°
|
9°
|
7°
|
|
|
4° | 3° | 3° | 5° | 7° | 7° | 6° | 6° |
|
|
WSW
18
|
WSW
18
|
W
17
|
W
19
|
W
20
|
W
18
|
WSW
10
|
SW
5
|
|
|
36 | 35 | 33 | 37 | 40 | 35 | 20 | 9 |
|
|
VG | G | VG | VG | VG | VG | VG | G |
|
Humidity
|
84% | 84% | 84% | 78% | 69% | 68% | 81% | 93% |
|
UV
|
- | - | - | 2 | 3 | 2 | 1 | - |
| Time | 00:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
|
Chance of precipitation
|
20% | 50% | 40% | 10% | 30% | 10% | 10% | <5% |
|
|
6°
|
6°
|
6°
|
7°
|
9°
|
9°
|
7°
|
4°
|
|
|
4° | 4° | 4° | 5° | 6° | 6° | 3° | 1° |
|
|
N
5
|
N
6
|
N
8
|
N
11
|
N
13
|
NNW
14
|
N
13
|
NNW
7
|
|
|
10 | 11 | 15 | 21 | 27 | 29 | 26 | 15 |
|
|
G | M | G | G | VG | VG | VG | VG |
|
Humidity
|
95% | 92% | 89% | 78% | 66% | 58% | 62% | 72% |
|
UV
|
- | - | - | 1 | 3 | 2 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
|
Chance of precipitation
|
<5% | <5% | <5% | <5% | 10% | 10% | <5% | <5% |
|
|
2°
|
1°
|
0°
|
5°
|
8°
|
8°
|
6°
|
3°
|
|
|
-1° | -2° | -2° | 3° | 6° | 7° | 4° | 1° |
|
|
NW
8
|
NW
6
|
NW
6
|
NW
7
|
NW
7
|
NW
7
|
WSW
8
|
WNW
5
|
|
|
15 | 12 | 10 | 16 | 18 | 17 | 16 | 9 |
|
|
VG | VG | VG | VG | VG | VG | VG | VG |
|
Humidity
|
72% | 75% | 80% | 61% | 46% | 44% | 59% | 72% |
|
UV
|
- | - | - | 2 | 3 | 2 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
|
Chance of precipitation
|
<5% | <5% | 10% | 10% | 10% | 20% | 10% | 10% |
|
|
2°
|
2°
|
2°
|
6°
|
8°
|
8°
|
7°
|
6°
|
|
|
0° | 0° | 0° | 3° | 5° | 5° | 4° | 4° |
|
|
ENE
4
|
E
4
|
ESE
4
|
SSE
6
|
SSW
10
|
S
9
|
S
9
|
SSE
8
|
|
|
7 | 7 | 8 | 14 | 22 | 20 | 17 | 16 |
|
|
VG | VG | VG | VG | G | G | G | G |
|
Humidity
|
79% | 77% | 84% | 71% | 63% | 67% | 75% | 80% |
|
UV
|
- | - | - | 1 | 2 | 1 | 1 | - |
Chance of precipitation represents how likely it is that rain (or other types of precipitation, such as sleet, snow, hail and drizzle) will fall from the sky at a certain time.
This number shows the air temperature for the time period. You can see the temperature in Celsius or Fahrenheit by using the dropdown menu.
Feels like temperature considers other factors, such as wind speed and humidity. This gives you a better idea of how the temperature will actually feel at the time.
Wind gust shows the highest wind speed that you should encounter at that time, as winds peak and lull.
Strong winds are shown in bold for speeds of 29 mph or more.
The arrow shows the direction the wind is blowing. The letters show the direction the wind is blowing from (on a standard 16-point compass).
The number represents the average wind speed expected at that time.
The arrow shows the direction of the wind (up is north). The blue behind the arrow represents the sea, and green is the land. If the arrow points from green to blue, the wind will be blowing from land to sea (‘offshore’). The number is the average wind speed.
Beware of offshore winds if you are using inflatables, paddle boards or kayaks, because these winds can blow you out to sea. Read more about how wind will affect you at the beach.
Visibility measures the distance at which an object can be clearly seen.
| VP (Very Poor) | Less than 1 km |
| P (Poor) | 1.1 km to 4 km |
| M (Moderate) | 4.1 km to 10 km |
| G (Good) | 10.1 km to 20 km |
| VG (Very Good) | 20.1 km to 40 km |
| E (Excellent) | Greater than 40 km |
Humidity is the amount of water vapor in the air. If there is a lot of water vapour, the humidity will be high. The higher the percentage of humidity, the wetter it will feel outside.
UV exposure index and the protection required to help keep you safe:
No risk of UV - It’s safe to stay outside. Low - You can safely stay outside. Consider sunscreen in direct sunlight. Moderate - Take care during midday hours and do not spend too much time in the sun unprotected. Sunscreen advised. High - Seek shade during midday hours, cover up and wear sunscreen. Very high - Spend time in the shade between 11am and 3pm. Shirt, sunscreen and hat are essential. Extreme - Avoid being outside during midday hours. Shirt, sunscreen and hat essential.
This is the average height of the waves, 1-2 miles out to sea. The height of the waves can vary. The individual waves out to sea or at the beach can be higher than this number. If you are close to the water, keep an eye on the waves to stop you or your belongings being swept away.
Read more about calculating the expected height of the waves at the beach.
This is the average number of seconds between one wave and the next, 1-2 miles out to sea. A long wave period (more than 10 seconds) means the waves at the beach may be more powerful. Lifeguards can give you advice on waves if you’re planning to go into the water.
Read more about the period of waves.
The arrow shows the average direction that the waves are going 1-2 miles out to sea. It indicates how sheltered the beach will be from these waves. If the arrow points towards land, most of the waves’ power will reach the beach. If the arrow is parallel or pointing away from land, the height of the waves on the beach is likely to be lower than the height of waves offshore.
Lifeguards can give you advice on waves if you’re planning to go into the water.
Ystrad Mynach weather map
View the weather with our interactive map
Loading map…
WARNING
Flood warnings in force
for Wales
Flood warnings in force
for Wales
Wales weather forecast
Headline:
Often windy with sunny spells and showers.
This Evening and Tonight:
Showers continuing into the evening, becoming more persistent and heavier at times, accompanied by strong winds. Turning drier for a time overnight with clear spells and staying frost free. Minimum temperature 4 °C.
Thursday:
Remaining windy on Thursday with sunny intervals and scattered showers, these turning heavy and perhaps thundery at times. A mild day but the breeze taking the edge off the temperatures. Maximum temperature 14 °C.
Outlook for Friday to Sunday:
A mixture of sunny spells and blustery showers into the weekend, again potentially heavy and thundery. Often windy though easing on Sunday and turning chillier.
Updated:
UK long range weather forecast
On Monday, largely dry with sunny spells and light winds after a frosty start. Coastal showers, wintry in places, across the northeast accompanied by stronger winds. Temperatures generally below average, but with lighter winds and sunshine feeling quite pleasant for most. Moving through the period, some spells of rain are likely to push across most areas, with the southeast seeing the driest conditions towards the end of the month. Into early April, likely remaining changeable but perhaps more in the way of drier interludes, especially across the south. Some strong winds are likely, with a low risk of gales, mainly for western areas. Temperatures are generally above average, with colder conditions possible in the north.
Updated:
A general trend to less unsettled conditions is likely into April. Still some wetter weather at times, with occasional showers, which could be heavy or thundery. However, most areas are likely to see some spells of dry weather, with potentially frost and some fog overnight. The chances of strong winds are probably lower than normal, and whilst temperatures are likely to generally be near to slightly above normal, cooler spells remain possible.
Updated:
