Pentwyn (Cardiff) weather

Forecast days

Cloudy changing to sunny intervals in the afternoon.
Sunrise iconSunrise:
Sunset iconSunset:
M UV
L Pollution
No pollen data.

    7 day forecast for Pentwyn

    Today (11 September 2026)
    Time
    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 Cloudy Sunny intervals Sunny intervals Sunny intervals Sunny day Sunny day Clear night Clear night Clear night Clear night
    Chance of precipitation
    10%
    30%
    30%
    10%
    10%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    Temperature
    20°
    20°
    20°
    20°
    19°
    19°
    17°
    16°
    15°
    14°
    13°
    Feels like temperature (°C)
    19°
    20°
    19°
    19°
    19°
    18°
    17°
    15°
    14°
    14°
    13°
    Wind direction and speed
    WNW
    6
    W
    6
    W
    6
    W
    7
    W
    7
    W
    7
    W
    7
    W
    7
    W
    5
    W
    5
    WNW
    4
    Wind gust (mph)
    17
    17
    17
    18
    18
    17
    17
    15
    15
    14
    13
    Visibility
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    64%
    64%
    66%
    67%
    67%
    72%
    76%
    83%
    85%
    87%
    87%
    UV 4 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 Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Sunny intervals Sunny intervals Cloudy Cloudy Cloudy Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Light rain Light rain Light rain Light rain
    Chance of precipitation
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    10%
    10%
    10%
    20%
    30%
    30%
    30%
    40%
    40%
    50%
    50%
    50%
    60%
    60%
    Temperature (°C)
    12°
    12°
    11°
    11°
    12°
    13°
    14°
    15°
    16°
    17°
    18°
    19°
    19°
    20°
    20°
    20°
    20°
    19°
    19°
    19°
    18°
    18°
    18°
    18°
    Feels like temperature (°C)
    12°
    11°
    11°
    11°
    12°
    13°
    14°
    14°
    15°
    16°
    16°
    17°
    17°
    17°
    17°
    17°
    17°
    17°
    17°
    17°
    17°
    17°
    17°
    17°
    Wind direction and speed (mph)
    WNW
    3
    WNW
    3
    WNW
    3
    W
    2
    WSW
    3
    SW
    4
    SW
    6
    SW
    7
    SW
    8
    SW
    10
    WSW
    13
    WSW
    14
    WSW
    15
    WSW
    15
    WSW
    16
    WSW
    16
    WSW
    16
    WSW
    15
    WSW
    14
    WSW
    14
    WSW
    13
    WSW
    11
    WSW
    11
    WSW
    11
    Wind gust (mph)
    12
    13
    13
    9
    13
    18
    19
    21
    23
    25
    26
    28
    30
    31
    31
    30
    30
    29
    27
    27
    25
    25
    25
    25
    Visibility (description)
    G
    G
    VG
    G
    G
    G
    G
    G
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    G
    G
    G
    G
    M
    G
    M
    M
    M
    Humidity
    88%
    87%
    86%
    86%
    86%
    86%
    87%
    88%
    85%
    85%
    78%
    76%
    75%
    74%
    75%
    76%
    79%
    83%
    86%
    89%
    91%
    92%
    93%
    94%
    UV - - - - - - 1 1 1 1 2 3 4 4 3 2 1 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 Light rain Light rain Light rain Light rain Heavy rain Light rain Light rain Light rain Light rain Light rain Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Mist Mist Mist Mist Mist
    Chance of precipitation
    60%
    70%
    80%
    80%
    80%
    90%
    80%
    80%
    70%
    50%
    50%
    40%
    40%
    30%
    30%
    30%
    30%
    20%
    30%
    30%
    30%
    30%
    30%
    20%
    Temperature (°C)
    18°
    18°
    18°
    18°
    18°
    18°
    18°
    18°
    18°
    18°
    19°
    19°
    20°
    20°
    20°
    20°
    20°
    20°
    20°
    19°
    19°
    18°
    18°
    18°
    Feels like temperature (°C)
    17°
    17°
    17°
    17°
    17°
    17°
    18°
    18°
    17°
    18°
    19°
    19°
    20°
    20°
    20°
    20°
    20°
    20°
    19°
    19°
    19°
    19°
    19°
    19°
    Wind direction and speed (mph)
    WSW
    11
    WSW
    10
    WSW
    10
    WSW
    10
    WSW
    10
    WSW
    10
    WSW
    9
    WSW
    9
    WSW
    9
    WSW
    8
    WSW
    8
    WSW
    8
    WSW
    9
    WSW
    9
    WSW
    9
    WSW
    9
    WSW
    9
    WSW
    8
    WSW
    8
    WSW
    7
    WSW
    6
    WSW
    6
    WSW
    6
    WSW
    6
    Wind gust (mph)
    25
    24
    24
    24
    24
    24
    22
    21
    21
    21
    21
    21
    21
    21
    21
    20
    20
    18
    17
    16
    15
    15
    16
    15
    Visibility (description)
    M
    M
    M
    M
    M
    M
    M
    M
    M
    M
    M
    M
    G
    G
    M
    M
    M
    M
    M
    M
    M
    P
    P
    M
    Humidity
    95%
    96%
    96%
    96%
    96%
    96%
    97%
    97%
    97%
    96%
    94%
    94%
    93%
    92%
    91%
    92%
    92%
    91%
    92%
    93%
    94%
    95%
    96%
    95%
    UV - - - - - - 1 1 1 1 2 3 4 4 3 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 Mist Mist Mist Mist Mist Mist Mist Mist Overcast Overcast Overcast Overcast Overcast Overcast Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Overcast Overcast Overcast Overcast
    Chance of precipitation
    20%
    30%
    30%
    40%
    40%
    50%
    50%
    50%
    40%
    40%
    40%
    30%
    30%
    30%
    30%
    30%
    30%
    30%
    40%
    40%
    40%
    40%
    50%
    50%
    Temperature (°C)
    18°
    18°
    18°
    18°
    18°
    18°
    18°
    18°
    18°
    18°
    19°
    20°
    20°
    21°
    21°
    21°
    21°
    21°
    20°
    19°
    19°
    19°
    18°
    18°
    Feels like temperature (°C)
    19°
    18°
    18°
    18°
    18°
    19°
    19°
    19°
    19°
    19°
    19°
    20°
    20°
    20°
    20°
    20°
    20°
    19°
    19°
    18°
    18°
    18°
    18°
    18°
    Wind direction and speed (mph)
    WSW
    6
    WSW
    6
    WSW
    6
    WSW
    6
    WSW
    5
    WSW
    5
    WSW
    5
    WSW
    5
    WSW
    6
    WSW
    6
    WSW
    7
    WSW
    8
    WSW
    10
    WSW
    10
    WSW
    10
    WSW
    10
    WSW
    11
    WSW
    11
    WSW
    10
    WSW
    10
    WSW
    9
    WSW
    10
    WSW
    10
    WSW
    9
    Wind gust (mph)
    16
    15
    14
    15
    15
    15
    16
    16
    17
    18
    20
    22
    23
    24
    23
    23
    23
    23
    23
    22
    22
    23
    22
    22
    Visibility (description)
    P
    P
    P
    M
    M
    P
    P
    P
    P
    M
    M
    M
    M
    G
    G
    G
    G
    G
    G
    G
    G
    G
    G
    M
    Humidity
    94%
    95%
    96%
    96%
    97%
    97%
    97%
    97%
    97%
    96%
    94%
    91%
    91%
    85%
    82%
    82%
    81%
    84%
    85%
    87%
    89%
    92%
    92%
    94%
    UV - - - - - - 1 1 1 1 2 2 3 3 2 2 1 1 1 1 - - - -
    Tuesday (15 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 Light rain Light rain Light shower night Cloudy Partly cloudy night Partly cloudy night Partly cloudy night Sunny intervals Sunny intervals Sunny intervals 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%
    60%
    50%
    40%
    30%
    20%
    20%
    20%
    10%
    10%
    <5%
    <5%
    10%
    10%
    <5%
    <5%
    <5%
    10%
    20%
    20%
    20%
    20%
    10%
    10%
    Temperature (°C)
    18°
    18°
    18°
    17°
    17°
    16°
    15°
    14°
    15°
    16°
    17°
    17°
    18°
    18°
    19°
    19°
    18°
    18°
    17°
    16°
    15°
    14°
    14°
    14°
    Feels like temperature (°C)
    18°
    18°
    18°
    17°
    16°
    16°
    14°
    13°
    14°
    15°
    15°
    16°
    16°
    16°
    16°
    16°
    16°
    15°
    15°
    15°
    14°
    13°
    13°
    13°
    Wind direction and speed (mph)
    WSW
    9
    WSW
    9
    WSW
    9
    W
    9
    W
    8
    W
    7
    W
    7
    W
    7
    W
    6
    WNW
    7
    WNW
    9
    WNW
    9
    WNW
    10
    WNW
    10
    WNW
    11
    WNW
    11
    WNW
    11
    WNW
    11
    WNW
    9
    WNW
    8
    WNW
    8
    WNW
    7
    WNW
    7
    WNW
    7
    Wind gust (mph)
    22
    23
    24
    23
    23
    22
    22
    23
    22
    22
    23
    24
    24
    26
    26
    26
    25
    24
    22
    22
    22
    21
    21
    22
    Visibility (description)
    M
    M
    M
    M
    G
    G
    G
    G
    G
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    94%
    94%
    95%
    94%
    92%
    90%
    90%
    89%
    85%
    78%
    70%
    65%
    60%
    57%
    55%
    54%
    55%
    57%
    59%
    66%
    71%
    74%
    77%
    79%
    UV - - - - - - 1 1 1 2 3 4 4 4 4 3 2 1 1 1 - - - -
    Wednesday (16 September 2026)
    Time
    00:00
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Partly cloudy night Partly cloudy night Partly cloudy night Sunny intervals Overcast Overcast Overcast Overcast Overcast
    Chance of precipitation
    10%
    <5%
    <5%
    10%
    10%
    10%
    10%
    20%
    30%
    Temperature (°C)
    13°
    13°
    13°
    13°
    16°
    17°
    18°
    16°
    16°
    Feels like temperature (°C)
    12°
    12°
    12°
    12°
    14°
    15°
    16°
    14°
    14°
    Wind direction and speed (mph)
    WNW
    7
    WNW
    7
    WNW
    7
    WNW
    8
    WNW
    10
    WNW
    11
    W
    11
    W
    11
    W
    11
    Wind gust (mph)
    22
    19
    18
    20
    23
    24
    25
    24
    25
    Visibility (description)
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    G
    Humidity
    81%
    81%
    83%
    85%
    75%
    69%
    69%
    76%
    84%
    UV - - - 1 2 4 2 1 -
    Thursday (17 September 2026)
    Time
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Overcast Light rain Drizzle Drizzle Cloudy Sunny intervals Partly cloudy night Partly cloudy night
    Chance of precipitation
    40%
    50%
    50%
    40%
    30%
    20%
    20%
    10%
    Temperature (°C)
    16°
    16°
    15°
    17°
    18°
    18°
    17°
    15°
    Feels like temperature (°C)
    14°
    14°
    14°
    14°
    15°
    15°
    14°
    14°
    Wind direction and speed (mph)
    W
    11
    W
    11
    W
    11
    W
    15
    W
    15
    W
    15
    W
    13
    W
    9
    Wind gust (mph)
    27
    26
    28
    31
    32
    30
    24
    20
    Visibility (description)
    G
    M
    G
    M
    G
    G
    G
    G
    Humidity
    87%
    88%
    89%
    83%
    75%
    69%
    74%
    79%
    UV - - 1 2 4 2 1 -

    UK video forecast

    Pentwyn weather map

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    Wales weather forecast

    Headline:

    Dry and bright Friday. Rain arriving Saturday.

    Today:

    Isolated showers first thing on Friday morning, but these will soon fade as a ridge of high pressure builds in. This leaves brighter spells in the afternoon, especially in the west. Light winds and temperatures near average. Maximum temperature 20 °C.

    Tonight:

    Dry with clear spells initially. However, it will cloud over from the north after midnight. Strengthening southwesterly winds, with a risk coastal gales across Gwynedd and Anglesey later. Minimum temperature 8 °C.

    Saturday:

    A band of cloud and rain already across north Wales will gradually sink south across the country during the day. Some heavier bursts possible. Rather windy, with temperatures near normal. Maximum temperature 20 °C.

    Outlook for Sunday to Tuesday:

    Dry with variable amounts of cloud around on Sunday, before another area of rain arrives from the west for Monday. Turning rather showers on Tuesday, with a risk of thunder.

    Updated:

    UK long range weather forecast