Llantwit Major (Vale of Glamorgan) weather

Forecast days

Overcast changing to light rain in the afternoon.
Sunrise iconSunrise:
Sunset iconSunset:
M UV
L Pollution

    7 day forecast for Llantwit Major

    Today (10 September 2026)
    Time
    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 Cloudy Overcast Overcast Overcast Overcast Cloudy Cloudy Cloudy Overcast Overcast Overcast Light rain Light rain Light rain Light shower day Light shower night Light shower night Partly cloudy night Partly cloudy night
    Chance of precipitation
    <5%
    <5%
    <5%
    20%
    20%
    10%
    10%
    20%
    30%
    30%
    40%
    50%
    50%
    50%
    60%
    60%
    60%
    50%
    20%
    Temperature
    12°
    12°
    13°
    14°
    15°
    16°
    17°
    18°
    18°
    18°
    18°
    18°
    18°
    17°
    17°
    17°
    17°
    17°
    17°
    Feels like temperature (°C)
    11°
    12°
    12°
    13°
    13°
    14°
    15°
    16°
    16°
    16°
    16°
    16°
    15°
    15°
    15°
    15°
    15°
    15°
    15°
    Wind direction and speed
    SE
    5
    S
    5
    S
    6
    S
    7
    S
    8
    S
    9
    SSW
    11
    SSW
    11
    SW
    11
    SW
    11
    SSW
    11
    SSW
    13
    SW
    14
    SW
    14
    SW
    15
    SW
    15
    WSW
    15
    WSW
    14
    W
    14
    Wind gust (mph)
    17
    17
    19
    19
    20
    21
    23
    23
    24
    24
    25
    25
    25
    26
    25
    25
    23
    21
    20
    Visibility
    G
    G
    G
    G
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    G
    G
    G
    M
    M
    M
    M
    G
    Humidity
    81%
    80%
    77%
    77%
    76%
    75%
    75%
    73%
    73%
    73%
    74%
    76%
    78%
    84%
    85%
    87%
    91%
    90%
    88%
    UV - 1 1 1 1 3 3 4 4 2 1 1 1 1 1 - - - -
    Friday (11 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 Partly cloudy night Partly cloudy night Partly cloudy night Cloudy Light shower night Light shower night Partly cloudy night Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny day Sunny day Sunny day Sunny day Sunny day Clear night Clear night Clear night Clear night
    Chance of precipitation
    30%
    30%
    30%
    50%
    60%
    50%
    50%
    30%
    20%
    10%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    Temperature (°C)
    17°
    17°
    17°
    17°
    17°
    16°
    15°
    15°
    16°
    16°
    17°
    18°
    19°
    19°
    20°
    20°
    19°
    19°
    18°
    17°
    15°
    14°
    13°
    12°
    Feels like temperature (°C)
    15°
    15°
    16°
    16°
    16°
    15°
    15°
    14°
    15°
    15°
    16°
    17°
    17°
    17°
    17°
    17°
    17°
    17°
    16°
    15°
    14°
    13°
    12°
    11°
    Wind direction and speed (mph)
    W
    13
    W
    13
    W
    11
    W
    10
    W
    9
    WNW
    8
    NW
    7
    WNW
    7
    NW
    7
    WNW
    8
    WNW
    9
    WNW
    9
    W
    10
    W
    11
    W
    11
    W
    11
    W
    11
    W
    11
    W
    11
    W
    10
    WNW
    9
    WNW
    7
    WNW
    7
    NW
    6
    Wind gust (mph)
    21
    20
    19
    18
    18
    17
    16
    15
    15
    15
    15
    16
    17
    18
    18
    19
    19
    19
    18
    17
    15
    14
    12
    12
    Visibility (description)
    G
    G
    G
    G
    G
    M
    M
    M
    G
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    86%
    86%
    87%
    88%
    91%
    92%
    93%
    94%
    92%
    86%
    79%
    75%
    68%
    66%
    67%
    66%
    65%
    65%
    68%
    74%
    80%
    82%
    84%
    86%
    UV - - - - - - 1 1 1 2 3 4 5 5 4 3 2 1 1 1 - - - -
    Saturday (12 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 Clear night Clear night Clear night Clear night Partly cloudy night Partly cloudy night Partly cloudy night Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Cloudy Cloudy Cloudy Cloudy Overcast Overcast Overcast Light rain Light rain Light rain Light rain Overcast
    Chance of precipitation
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    10%
    10%
    10%
    20%
    20%
    30%
    30%
    40%
    40%
    50%
    50%
    50%
    50%
    50%
    50%
    Temperature (°C)
    11°
    11°
    11°
    12°
    12°
    13°
    14°
    14°
    16°
    17°
    18°
    19°
    19°
    20°
    20°
    20°
    19°
    19°
    19°
    19°
    18°
    18°
    18°
    18°
    Feels like temperature (°C)
    11°
    10°
    11°
    11°
    11°
    12°
    12°
    13°
    14°
    15°
    15°
    16°
    17°
    17°
    17°
    16°
    16°
    16°
    15°
    15°
    15°
    15°
    15°
    15°
    Wind direction and speed (mph)
    NNW
    5
    NNW
    4
    NNW
    5
    WNW
    5
    W
    6
    WSW
    7
    SW
    8
    SW
    9
    SW
    11
    SW
    14
    WSW
    15
    WSW
    15
    WSW
    15
    WSW
    16
    WSW
    16
    WSW
    18
    WSW
    18
    WSW
    18
    WSW
    18
    WSW
    18
    WSW
    18
    WSW
    18
    WSW
    18
    WSW
    18
    Wind gust (mph)
    10
    11
    12
    14
    16
    17
    18
    19
    22
    24
    26
    27
    28
    28
    29
    30
    30
    30
    30
    28
    28
    28
    27
    27
    Visibility (description)
    G
    G
    G
    G
    G
    G
    G
    G
    VG
    VG
    VG
    G
    G
    G
    G
    G
    G
    G
    G
    M
    M
    M
    M
    M
    Humidity
    88%
    87%
    87%
    86%
    86%
    86%
    86%
    86%
    84%
    80%
    76%
    75%
    75%
    74%
    75%
    76%
    77%
    81%
    84%
    88%
    89%
    92%
    92%
    93%
    UV - - - - - - 1 1 1 2 3 3 4 4 3 2 2 1 1 1 - - - -
    Sunday (13 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 Mist Light rain Light rain Light rain Light rain Light rain Overcast Overcast Overcast Cloudy Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night
    Chance of precipitation
    50%
    50%
    60%
    50%
    60%
    60%
    50%
    50%
    50%
    40%
    30%
    20%
    20%
    10%
    10%
    10%
    <5%
    <5%
    <5%
    10%
    10%
    10%
    20%
    20%
    Temperature (°C)
    18°
    18°
    18°
    18°
    18°
    17°
    17°
    17°
    17°
    18°
    18°
    19°
    19°
    20°
    20°
    20°
    20°
    19°
    19°
    18°
    17°
    17°
    17°
    17°
    Feels like temperature (°C)
    16°
    16°
    15°
    15°
    15°
    15°
    16°
    16°
    16°
    16°
    17°
    18°
    18°
    18°
    18°
    18°
    18°
    18°
    18°
    17°
    17°
    17°
    17°
    17°
    Wind direction and speed (mph)
    WSW
    17
    WSW
    16
    WSW
    16
    W
    16
    W
    15
    W
    15
    W
    13
    W
    13
    WNW
    11
    WNW
    11
    W
    10
    W
    10
    W
    10
    W
    10
    W
    11
    W
    11
    W
    11
    W
    10
    W
    10
    W
    9
    W
    7
    W
    7
    W
    7
    W
    6
    Wind gust (mph)
    27
    26
    25
    26
    25
    23
    22
    20
    19
    19
    18
    18
    17
    18
    19
    19
    19
    17
    17
    15
    15
    13
    12
    12
    Visibility (description)
    M
    M
    M
    M
    M
    M
    M
    M
    M
    M
    G
    G
    G
    VG
    VG
    G
    VG
    G
    G
    G
    G
    M
    M
    M
    Humidity
    92%
    92%
    93%
    94%
    94%
    94%
    94%
    93%
    94%
    91%
    87%
    87%
    84%
    79%
    78%
    78%
    78%
    79%
    83%
    85%
    89%
    90%
    92%
    92%
    UV - - - - - - 1 1 1 1 2 3 4 4 4 3 2 1 1 1 - - - -
    Monday (14 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 Partly cloudy night Partly cloudy night Partly cloudy night Cloudy Mist Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast
    Chance of precipitation
    20%
    20%
    20%
    20%
    20%
    30%
    30%
    40%
    40%
    40%
    40%
    40%
    40%
    30%
    20%
    20%
    30%
    30%
    30%
    30%
    30%
    30%
    30%
    30%
    Temperature (°C)
    17°
    17°
    17°
    17°
    17°
    17°
    17°
    17°
    17°
    18°
    19°
    19°
    19°
    20°
    20°
    20°
    20°
    20°
    20°
    19°
    19°
    19°
    19°
    19°
    Feels like temperature (°C)
    17°
    17°
    17°
    17°
    17°
    17°
    17°
    17°
    17°
    18°
    19°
    19°
    19°
    19°
    20°
    19°
    19°
    19°
    19°
    18°
    18°
    18°
    18°
    17°
    Wind direction and speed (mph)
    W
    6
    WNW
    6
    W
    6
    W
    7
    W
    7
    W
    7
    WSW
    7
    WSW
    7
    WSW
    7
    SW
    7
    SW
    7
    SW
    8
    WSW
    9
    WSW
    10
    WSW
    10
    WSW
    11
    WSW
    11
    WSW
    11
    WSW
    11
    WSW
    11
    WSW
    11
    WSW
    11
    WSW
    10
    WSW
    11
    Wind gust (mph)
    12
    13
    14
    13
    13
    13
    13
    13
    14
    16
    17
    20
    20
    21
    21
    21
    21
    22
    21
    20
    20
    20
    21
    21
    Visibility (description)
    M
    M
    M
    M
    M
    P
    M
    M
    M
    M
    G
    G
    G
    G
    G
    G
    G
    G
    G
    G
    G
    G
    M
    M
    Humidity
    93%
    93%
    93%
    94%
    94%
    94%
    94%
    95%
    94%
    93%
    92%
    91%
    91%
    89%
    88%
    85%
    85%
    86%
    87%
    90%
    92%
    92%
    92%
    92%
    UV - - - - - - 1 1 1 1 2 3 4 4 4 3 1 1 1 1 - - - -
    Tuesday (15 September 2026)
    Time
    00:00
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Overcast Drizzle Overcast Cloudy Sunny intervals Sunny intervals Sunny intervals Partly cloudy night Partly cloudy night
    Chance of precipitation
    40%
    40%
    40%
    30%
    20%
    10%
    10%
    10%
    <5%
    Temperature (°C)
    18°
    18°
    18°
    18°
    18°
    20°
    20°
    18°
    15°
    Feels like temperature (°C)
    17°
    17°
    17°
    16°
    16°
    17°
    17°
    15°
    14°
    Wind direction and speed (mph)
    WSW
    11
    WSW
    13
    W
    11
    W
    11
    WNW
    12
    WNW
    14
    WNW
    15
    NW
    13
    NW
    10
    Wind gust (mph)
    22
    22
    21
    22
    23
    24
    24
    20
    17
    Visibility (description)
    M
    M
    M
    M
    G
    VG
    VG
    VG
    VG
    Humidity
    93%
    93%
    93%
    92%
    86%
    71%
    65%
    69%
    79%
    UV - - - 1 2 4 2 1 -
    Wednesday (16 September 2026)
    Time
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Partly cloudy night Partly cloudy night Sunny intervals Cloudy Cloudy Cloudy Cloudy Cloudy
    Chance of precipitation
    <5%
    <5%
    <5%
    10%
    10%
    10%
    10%
    10%
    Temperature (°C)
    15°
    14°
    13°
    16°
    17°
    18°
    17°
    15°
    Feels like temperature (°C)
    13°
    12°
    12°
    14°
    16°
    16°
    15°
    14°
    Wind direction and speed (mph)
    NW
    9
    NNW
    9
    NNW
    9
    NNW
    8
    WNW
    8
    W
    10
    WNW
    9
    WNW
    10
    Wind gust (mph)
    16
    15
    15
    17
    17
    16
    16
    16
    Visibility (description)
    VG
    G
    G
    VG
    VG
    VG
    VG
    VG
    Humidity
    84%
    84%
    85%
    73%
    66%
    65%
    72%
    79%
    UV - - 1 3 4 2 1 -

    UK video forecast

    Llantwit Major weather map

    View the weather with our interactive map

    Loading map...

    Wales weather forecast

    Headline:

    Changeable next few days, with sunshine and some showery rain.

    Today:

    Early bright spells will give way to increasing cloud and some rain from the west on Thursday morning, and this will lead into a rather wet and breezy afternoon. The strongest winds will be around coasts and over high ground. Maximum temperature 19 °C.

    Tonight:

    The heaviest of the rain will clear eastwards this evening, leaving showers for a time, these easing by dawn with some clearer spells. A milder night than the previous night. Minimum temperature 10 °C.

    Friday:

    Isolated showers first thing Friday morning, but dissipating under a ridge of high pressure. This leaves brighter spells in the afternoon, especially in the west. Temperatures will be near average. Maximum temperature 20 °C.

    Outlook for Saturday to Monday:

    More wet and windy weather returns on Saturday, followed by another ridge of high pressure and drier weather on Sunday. Staying autumnal into next week with further spells of rain.

    Updated:

    UK long range weather forecast