Merthyr Tydfil (Merthyr Tydfil) weather

Forecast days

Light rain changing to overcast by lunchtime.
Sunrise iconSunrise:
Sunset iconSunset:
H UV
L Pollution

    7 day forecast for Merthyr Tydfil

    Today (25 June 2025)
    Time
    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 Mist Drizzle Light rain Light rain Light rain Overcast Overcast Overcast Overcast Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Cloudy Overcast Overcast Overcast
    Chance of precipitation
    30%
    50%
    80%
    70%
    60%
    50%
    30%
    10%
    10%
    <5%
    <5%
    10%
    10%
    10%
    10%
    20%
    30%
    30%
    Temperature
    15°
    15°
    16°
    16°
    17°
    17°
    17°
    18°
    18°
    19°
    19°
    20°
    19°
    19°
    18°
    17°
    16°
    16°
    Feels like temperature (°C)
    15°
    15°
    16°
    16°
    16°
    17°
    17°
    18°
    18°
    19°
    19°
    19°
    19°
    19°
    18°
    17°
    17°
    16°
    Wind direction and speed
    WSW
    5
    WSW
    5
    WSW
    6
    WSW
    6
    WSW
    7
    WSW
    7
    WSW
    7
    SW
    6
    SW
    6
    WSW
    7
    WSW
    7
    WSW
    7
    WSW
    7
    WSW
    6
    WSW
    6
    WSW
    5
    WSW
    4
    WSW
    4
    Wind gust (mph)
    14
    16
    17
    18
    18
    18
    17
    17
    18
    18
    19
    18
    17
    16
    14
    12
    9
    8
    Visibility
    P
    P
    M
    M
    G
    G
    G
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    G
    Humidity
    99%
    99%
    98%
    96%
    96%
    94%
    93%
    91%
    89%
    85%
    81%
    78%
    80%
    84%
    86%
    88%
    93%
    96%
    UV 1 1 1 2 3 4 4 4 4 4 3 2 1 1 1 1 - -
    Thursday (26 June 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 Overcast Overcast Overcast Overcast Overcast Light rain Light rain Light rain Light rain Light rain Light shower day Sunny intervals Sunny intervals Sunny day Sunny day Sunny day Sunny day Sunny intervals Sunny intervals Sunny intervals Sunny intervals Partly cloudy night Partly cloudy night Partly cloudy night
    Chance of precipitation
    40%
    50%
    40%
    40%
    50%
    60%
    70%
    80%
    80%
    70%
    50%
    20%
    10%
    10%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    10%
    20%
    20%
    10%
    Temperature (°C)
    16°
    16°
    16°
    16°
    15°
    15°
    15°
    16°
    16°
    16°
    17°
    17°
    17°
    18°
    18°
    18°
    18°
    17°
    17°
    16°
    15°
    15°
    14°
    14°
    Feels like temperature (°C)
    16°
    16°
    16°
    15°
    15°
    15°
    15°
    15°
    15°
    15°
    15°
    15°
    15°
    15°
    15°
    15°
    15°
    15°
    14°
    14°
    14°
    13°
    13°
    13°
    Wind direction and speed (mph)
    WSW
    4
    SW
    4
    SW
    5
    SW
    5
    SW
    6
    SW
    6
    SW
    7
    SW
    7
    SW
    9
    SW
    10
    WSW
    11
    WSW
    12
    WSW
    13
    WSW
    13
    WSW
    13
    WSW
    13
    WSW
    13
    WSW
    12
    WSW
    11
    WSW
    10
    WSW
    9
    WSW
    8
    WSW
    6
    WSW
    6
    Wind gust (mph)
    9
    11
    13
    14
    15
    18
    21
    25
    26
    28
    31
    32
    33
    36
    36
    34
    33
    32
    30
    27
    23
    20
    17
    15
    Visibility (description)
    G
    G
    G
    VG
    VG
    G
    G
    M
    M
    M
    G
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    Humidity
    97%
    97%
    97%
    96%
    96%
    96%
    96%
    96%
    96%
    96%
    94%
    90%
    76%
    63%
    56%
    56%
    55%
    58%
    63%
    66%
    71%
    76%
    78%
    81%
    UV - - - - 1 1 1 1 1 2 2 4 6 7 6 5 4 2 1 1 1 1 - -
    Friday (27 June 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 Cloudy Cloudy Overcast Overcast Overcast Overcast Light rain Light rain
    Chance of precipitation
    10%
    10%
    20%
    20%
    20%
    20%
    30%
    70%
    80%
    Temperature (°C)
    14°
    14°
    14°
    15°
    17°
    19°
    19°
    18°
    17°
    Feels like temperature (°C)
    13°
    13°
    13°
    14°
    15°
    16°
    17°
    17°
    16°
    Wind direction and speed (mph)
    WSW
    6
    SW
    6
    SW
    7
    SW
    8
    SW
    11
    SW
    14
    SW
    14
    SW
    12
    SW
    10
    Wind gust (mph)
    15
    18
    22
    29
    34
    37
    36
    31
    27
    Visibility (description)
    E
    E
    VG
    VG
    VG
    VG
    VG
    G
    M
    Humidity
    85%
    85%
    88%
    89%
    85%
    82%
    82%
    91%
    99%
    UV - - 1 1 4 6 3 1 -
    Saturday (28 June 2025)
    Time
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Light rain Light rain Light rain Overcast Sunny intervals Sunny intervals Sunny intervals Overcast
    Chance of precipitation
    80%
    80%
    60%
    30%
    10%
    10%
    10%
    20%
    Temperature (°C)
    17°
    16°
    17°
    18°
    19°
    20°
    19°
    16°
    Feels like temperature (°C)
    16°
    16°
    16°
    17°
    18°
    19°
    18°
    17°
    Wind direction and speed (mph)
    SW
    9
    WSW
    8
    WSW
    8
    WSW
    9
    WSW
    9
    WSW
    9
    WSW
    7
    WSW
    4
    Wind gust (mph)
    25
    23
    25
    26
    26
    25
    19
    9
    Visibility (description)
    P
    P
    M
    G
    VG
    VG
    VG
    VG
    Humidity
    100%
    100%
    99%
    99%
    94%
    85%
    85%
    93%
    UV - 1 1 2 4 4 1 -
    Sunday (29 June 2025)
    Time
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Overcast Overcast Overcast Sunny intervals Sunny intervals Sunny intervals Sunny intervals Cloudy
    Chance of precipitation
    20%
    20%
    20%
    20%
    10%
    10%
    10%
    10%
    Temperature (°C)
    16°
    15°
    16°
    18°
    20°
    21°
    20°
    17°
    Feels like temperature (°C)
    16°
    15°
    16°
    18°
    20°
    20°
    20°
    18°
    Wind direction and speed (mph)
    WSW
    4
    WSW
    4
    SW
    5
    SW
    7
    WSW
    8
    WSW
    8
    W
    6
    WNW
    4
    Wind gust (mph)
    9
    9
    13
    17
    19
    17
    12
    6
    Visibility (description)
    G
    G
    G
    VG
    VG
    VG
    VG
    G
    Humidity
    96%
    97%
    96%
    91%
    81%
    77%
    80%
    92%
    UV - 1 1 3 6 3 1 -
    Monday (30 June 2025)
    Time
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Overcast Overcast Cloudy Sunny intervals Sunny intervals Sunny intervals Sunny intervals Partly cloudy night
    Chance of precipitation
    10%
    10%
    20%
    20%
    20%
    20%
    10%
    20%
    Temperature (°C)
    16°
    15°
    16°
    19°
    21°
    22°
    21°
    17°
    Feels like temperature (°C)
    16°
    15°
    17°
    19°
    21°
    22°
    20°
    17°
    Wind direction and speed (mph)
    WNW
    3
    WNW
    3
    NNW
    3
    SSW
    5
    SW
    7
    WSW
    7
    W
    7
    W
    4
    Wind gust (mph)
    4
    4
    10
    13
    15
    15
    13
    8
    Visibility (description)
    G
    M
    M
    G
    VG
    VG
    VG
    VG
    Humidity
    96%
    97%
    95%
    86%
    75%
    68%
    72%
    86%
    UV - 1 1 3 7 4 1 -
    Tuesday (1 July 2025)
    Time
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Cloudy Cloudy Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Partly cloudy night
    Chance of precipitation
    20%
    20%
    20%
    10%
    20%
    20%
    20%
    20%
    Temperature (°C)
    15°
    14°
    14°
    16°
    19°
    19°
    18°
    14°
    Feels like temperature (°C)
    15°
    13°
    14°
    15°
    17°
    17°
    17°
    14°
    Wind direction and speed (mph)
    WNW
    4
    WNW
    5
    NW
    5
    NW
    7
    WNW
    8
    WNW
    8
    NW
    7
    WNW
    5
    Wind gust (mph)
    7
    7
    11
    16
    17
    16
    15
    9
    Visibility (description)
    G
    G
    G
    VG
    VG
    VG
    VG
    VG
    Humidity
    90%
    92%
    89%
    75%
    60%
    56%
    60%
    82%
    UV - - 1 4 7 4 1 -

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    Wales weather forecast

    Headline:

    Mainly cloudy but dry for many.

    Today:

    Rather gloomy at first with widespread cloud bringing spells of rain and drizzle across the hills. Becoming drier though remaining rather cloudy through the afternoon, with the best of the brightness in the south. Feeling warm and rather humid. Maximum temperature 23 °C.

    Tonight:

    Scattered showers arrive from the south through this evening, some heavy spells at times bringing the occasional rumble of thunder overnight. A mild night, and rather humid with light winds. Minimum temperature 16 °C.

    Thursday:

    Cloudy at first with a few showers, namely along the south coast. Drier by the afternoon with plenty of sunny spells. Feeling warm in the sunshine. Breezy around the coasts. Maximum temperature 20 °C.

    Outlook for Friday to Sunday:

    Mainly cloudy with occasional spells of rain, but some drier interludes too, especially by Sunday. Breezy on Friday with winds easing over the weekend. Increasingly warm and feeling rather humid.

    Updated:

    UK long range weather forecast

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