Cadair Idris (Gwynedd) weather

Forecast days

Sunny intervals changing to fog by nighttime.
Sunrise iconSunrise:
Sunset iconSunset:
M UV
L Pollution

    7 day forecast for Cadair Idris

    Today (15 April 2026)
    Time
    18:00
    19:00
    20:00
    21:00
    22:00
    23:00
    Weather symbols Sunny intervals Sunny intervals Partly cloudy night Fog Fog Light rain
    Chance of precipitation
    40%
    <5%
    <5%
    <5%
    30%
    70%
    Temperature
    Feels like temperature (°C)
    -2°
    -3°
    -3°
    -3°
    -3°
    -3°
    Wind direction and speed
    SW
    36
    SW
    36
    SW
    36
    SSW
    37
    SSW
    41
    SSW
    45
    Wind gust (mph)
    40
    39
    39
    41
    45
    49
    Visibility
    P
    M
    M
    M
    P
    P
    Humidity
    83%
    82%
    85%
    86%
    86%
    86%
    UV 1 1 1 - - -
    Thursday (16 April 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 shower night Light shower night Fog Fog Fog Fog Fog Fog Fog Fog Sunny intervals Sunny intervals Cloudy Cloudy Cloudy Cloudy Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain
    Chance of precipitation
    80%
    60%
    30%
    10%
    <5%
    10%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    10%
    30%
    40%
    60%
    70%
    80%
    90%
    90%
    90%
    90%
    80%
    Temperature (°C)
    Feels like temperature (°C)
    -3°
    -3°
    -3°
    -4°
    -4°
    -4°
    -4°
    -3°
    -3°
    -2°
    -2°
    -1°
    -1°
    -1°
    -1°
    -1°
    -1°
    -1°
    Wind direction and speed (mph)
    SSW
    47
    SW
    48
    SW
    48
    SW
    48
    SW
    47
    SW
    40
    SW
    37
    SW
    34
    SW
    32
    SW
    31
    SW
    30
    SW
    28
    SW
    27
    SW
    27
    SW
    26
    SW
    24
    SW
    23
    SW
    25
    SW
    23
    SSW
    22
    S
    23
    S
    24
    S
    26
    S
    27
    Wind gust (mph)
    52
    53
    52
    52
    51
    44
    41
    38
    35
    34
    33
    30
    30
    30
    28
    27
    25
    28
    25
    24
    25
    26
    28
    30
    Visibility (description)
    VP
    VP
    VP
    VP
    VP
    VP
    VP
    VP
    VP
    VP
    P
    M
    M
    G
    G
    M
    P
    P
    VP
    VP
    VP
    VP
    VP
    VP
    Humidity
    89%
    92%
    92%
    92%
    92%
    93%
    93%
    93%
    92%
    88%
    85%
    81%
    75%
    71%
    71%
    75%
    79%
    84%
    88%
    91%
    92%
    92%
    93%
    94%
    UV - - - - - - 1 1 1 1 2 3 4 4 2 2 1 1 1 1 1 - - -
    Friday (17 April 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 Fog Fog Fog Fog Light rain Heavy rain Heavy rain Heavy rain Light rain Light rain Fog Fog Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Partly cloudy night Fog Fog Fog
    Chance of precipitation
    60%
    60%
    40%
    40%
    50%
    30%
    60%
    80%
    90%
    90%
    80%
    60%
    40%
    40%
    30%
    20%
    20%
    10%
    10%
    10%
    10%
    10%
    10%
    <5%
    Temperature (°C)
    Feels like temperature (°C)
    -1°
    -1°
    -1°
    -1°
    -1°
    -1°
    -1°
    -2°
    -3°
    -3°
    -3°
    -3°
    Wind direction and speed (mph)
    S
    29
    S
    29
    S
    30
    S
    31
    S
    32
    S
    28
    S
    29
    S
    30
    S
    31
    S
    31
    SSW
    31
    SSW
    31
    SSW
    32
    SW
    32
    SW
    32
    SW
    33
    SW
    40
    SW
    40
    SW
    37
    SW
    36
    SW
    35
    SW
    35
    SW
    35
    SW
    35
    Wind gust (mph)
    32
    32
    33
    34
    35
    28
    32
    33
    31
    34
    34
    35
    35
    35
    32
    36
    44
    44
    41
    40
    39
    39
    38
    38
    Visibility (description)
    VP
    VP
    VP
    VP
    VP
    VP
    VP
    VP
    VP
    VP
    VP
    VP
    VP
    VP
    P
    P
    P
    G
    M
    M
    P
    P
    VP
    P
    Humidity
    93%
    93%
    93%
    93%
    94%
    95%
    94%
    93%
    93%
    94%
    94%
    93%
    91%
    84%
    81%
    79%
    77%
    77%
    77%
    81%
    85%
    86%
    87%
    90%
    UV - - - - - - 1 1 1 1 1 2 2 3 3 3 2 1 1 1 1 - - -
    Saturday (18 April 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 Fog Fog Fog Fog Fog Fog Fog Fog Fog Sunny intervals Mist 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
    Chance of precipitation
    <5%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    <5%
    10%
    10%
    10%
    10%
    10%
    20%
    20%
    20%
    30%
    30%
    30%
    30%
    Temperature (°C)
    Feels like temperature (°C)
    -4°
    -4°
    -3°
    -4°
    -4°
    -3°
    -3°
    -3°
    -3°
    -3°
    -2°
    -2°
    -2°
    -1°
    -1°
    -1°
    -1°
    -1°
    -2°
    -2°
    -2°
    -2°
    -2°
    -2°
    Wind direction and speed (mph)
    SW
    35
    SW
    34
    WSW
    33
    WSW
    31
    WSW
    30
    WSW
    25
    WSW
    23
    WSW
    23
    W
    23
    W
    23
    W
    23
    W
    23
    W
    22
    W
    22
    W
    21
    W
    20
    W
    23
    W
    22
    W
    22
    W
    19
    W
    16
    WSW
    14
    WSW
    13
    W
    13
    Wind gust (mph)
    38
    38
    36
    34
    33
    25
    24
    23
    25
    24
    24
    24
    24
    23
    23
    22
    25
    22
    24
    20
    18
    16
    13
    13
    Visibility (description)
    VP
    VP
    VP
    VP
    VP
    VP
    VP
    VP
    P
    P
    M
    M
    M
    G
    G
    G
    G
    G
    G
    VG
    M
    G
    M
    G
    Humidity
    91%
    92%
    92%
    92%
    92%
    91%
    92%
    91%
    86%
    84%
    81%
    77%
    75%
    72%
    68%
    66%
    65%
    67%
    73%
    77%
    84%
    87%
    87%
    87%
    UV - - - - - - 1 1 1 2 2 3 4 4 3 3 2 1 1 1 1 - - -
    Sunday (19 April 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 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 Sunny day Sunny day Clear night Clear night Clear night Clear night
    Chance of precipitation
    20%
    20%
    20%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    Temperature (°C)
    Feels like temperature (°C)
    -3°
    -3°
    -3°
    -4°
    -4°
    -4°
    -4°
    -3°
    -2°
    -1°
    -1°
    -1°
    -1°
    -2°
    -3°
    -3°
    -4°
    Wind direction and speed (mph)
    W
    13
    W
    13
    W
    13
    WNW
    13
    WNW
    13
    WNW
    11
    WNW
    10
    WNW
    9
    NW
    9
    NW
    10
    NW
    12
    WNW
    13
    WNW
    14
    WNW
    15
    WNW
    16
    WNW
    16
    WNW
    16
    WNW
    17
    WNW
    16
    WNW
    14
    WNW
    13
    N
    12
    E
    13
    E
    14
    Wind gust (mph)
    16
    15
    14
    13
    14
    12
    12
    11
    12
    13
    16
    17
    17
    18
    19
    18
    18
    19
    18
    15
    14
    13
    14
    15
    Visibility (description)
    G
    G
    M
    M
    M
    M
    M
    M
    G
    G
    G
    G
    G
    G
    G
    G
    G
    VG
    VG
    VG
    VG
    VG
    G
    G
    Humidity
    88%
    87%
    88%
    87%
    87%
    88%
    89%
    87%
    82%
    74%
    66%
    61%
    59%
    57%
    57%
    56%
    56%
    55%
    56%
    61%
    73%
    77%
    78%
    80%
    UV - - - - - - 1 1 1 2 2 3 4 4 3 3 2 1 1 1 1 - - -
    Monday (20 April 2026)
    Time
    00:00
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Clear night Clear night Clear night Sunny intervals Sunny intervals Sunny intervals Sunny intervals Partly cloudy night Partly cloudy night
    Chance of precipitation
    <5%
    <5%
    <5%
    <5%
    10%
    10%
    10%
    10%
    10%
    Temperature (°C)
    -1°
    Feels like temperature (°C)
    -5°
    -5°
    -6°
    -5°
    -3°
    Wind direction and speed (mph)
    SE
    14
    ESE
    14
    E
    14
    E
    11
    E
    16
    W
    19
    WNW
    20
    NE
    25
    NE
    20
    Wind gust (mph)
    15
    16
    16
    15
    20
    21
    22
    28
    21
    Visibility (description)
    G
    G
    M
    M
    G
    M
    G
    G
    M
    Humidity
    81%
    81%
    86%
    86%
    62%
    53%
    53%
    60%
    78%
    UV - - - 1 3 4 2 1 -
    Tuesday (21 April 2026)
    Time
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Mist Fog Mist Cloudy Cloudy Cloudy Partly cloudy night Partly cloudy night
    Chance of precipitation
    10%
    10%
    20%
    20%
    20%
    10%
    20%
    20%
    Temperature (°C)
    -1°
    Feels like temperature (°C)
    -6°
    -6°
    -6°
    -2°
    -1°
    -4°
    Wind direction and speed (mph)
    NE
    19
    ENE
    13
    ENE
    17
    ESE
    27
    ESE
    27
    E
    36
    E
    33
    E
    28
    Wind gust (mph)
    21
    16
    25
    29
    30
    40
    37
    31
    Visibility (description)
    VP
    VP
    VP
    P
    P
    M
    M
    P
    Humidity
    87%
    92%
    89%
    69%
    60%
    58%
    65%
    79%
    UV - - 1 2 4 2 1 -

    UK video forecast

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    Wales weather forecast

    Headline:

    Changeable this week. Turning drier through the weekend.

    This Evening and Tonight:

    Breezy tonight with clear spells and occasional showers moving through, these could be heavy at times and merging into longer spells of rain for a time overnight. Staying mild with the brisk winds. Minimum temperature 7 °C.

    Thursday:

    Largely dry with sunny spells though the odd shower still possible. Turning cloudier into the afternoon with more persistent rain arriving by the evening. Winds easing. Maximum temperature 16 °C.

    Outlook for Friday to Sunday:

    A spell of rain will move through on Friday. High pressure then building in over the weekend to bring a settled picture with sunny spells and lighter winds.

    Updated:

    UK long range weather forecast

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