Cadair Idris (Gwynedd) weather

Forecast days

Sleet changing to heavy rain by late morning.
Sunrise iconSunrise:
Sunset iconSunset:
L UV
L Pollution
No pollen data.

    7 day forecast for Cadair Idris

    Today (15 March 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 Heavy snow Sleet shower Light rain Light rain Light rain Heavy rain Heavy rain Sleet shower day Sleet shower day Cloudy Light snow shower day Light snow shower day Light snow shower day Partly cloudy night Partly cloudy night Partly cloudy night Cloudy Cloudy Cloudy
    Chance of precipitation
    90%
    90%
    90%
    90%
    ≥95%
    ≥95%
    90%
    80%
    60%
    40%
    80%
    60%
    50%
    40%
    40%
    40%
    30%
    40%
    50%
    Temperature
    Feels like temperature (°C)
    -8°
    -8°
    -8°
    -8°
    -7°
    -6°
    -5°
    -5°
    -5°
    -5°
    -5°
    -6°
    -7°
    -8°
    -8°
    -9°
    -9°
    -10°
    -10°
    Wind direction and speed
    SSW
    29
    SSW
    32
    S
    34
    SSW
    36
    SSW
    37
    SW
    38
    SW
    36
    WSW
    36
    WSW
    33
    WSW
    31
    WSW
    31
    WSW
    34
    W
    35
    WSW
    35
    W
    36
    W
    40
    W
    42
    W
    43
    W
    43
    Wind gust (mph)
    32
    35
    38
    37
    40
    42
    37
    40
    34
    35
    37
    37
    36
    36
    38
    43
    46
    47
    47
    Visibility
    P
    P
    P
    P
    VP
    VP
    VP
    P
    M
    G
    G
    G
    VG
    VG
    VG
    G
    VG
    G
    M
    Humidity
    92%
    91%
    93%
    96%
    97%
    99%
    99%
    97%
    90%
    84%
    79%
    83%
    79%
    81%
    77%
    77%
    77%
    79%
    79%
    UV - 1 1 1 1 1 1 1 1 1 1 1 1 1 - - - - -
    Monday (16 March 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 Cloudy Partly cloudy night Cloudy Partly cloudy night Partly cloudy night Cloudy Cloudy Cloudy Cloudy Fog Light rain Light rain Heavy rain Heavy rain Light rain Light rain Fog Fog Fog Fog Fog Light rain Light rain Light rain
    Chance of precipitation
    40%
    20%
    10%
    20%
    10%
    <5%
    <5%
    <5%
    20%
    50%
    70%
    90%
    ≥95%
    ≥95%
    80%
    50%
    30%
    20%
    20%
    40%
    50%
    70%
    70%
    70%
    Temperature (°C)
    -1°
    -1°
    Feels like temperature (°C)
    -10°
    -10°
    -10°
    -9°
    -9°
    -8°
    -8°
    -8°
    -7°
    -6°
    -6°
    -6°
    -6°
    -6°
    -6°
    -5°
    -5°
    -5°
    -5°
    -4°
    -5°
    -4°
    -5°
    -5°
    Wind direction and speed (mph)
    W
    42
    W
    41
    W
    39
    WSW
    38
    WSW
    37
    WSW
    31
    WSW
    30
    WSW
    30
    WSW
    31
    WSW
    32
    WSW
    33
    WSW
    34
    WSW
    35
    SW
    37
    SW
    37
    SW
    38
    SW
    44
    SW
    44
    SW
    43
    SW
    40
    SW
    38
    SSW
    36
    SSW
    36
    SSW
    36
    Wind gust (mph)
    46
    45
    42
    41
    41
    34
    30
    30
    34
    36
    36
    37
    39
    40
    41
    41
    49
    49
    47
    44
    42
    40
    39
    40
    Visibility (description)
    G
    G
    G
    G
    G
    VG
    G
    G
    G
    M
    M
    P
    P
    P
    VP
    VP
    VP
    VP
    VP
    VP
    VP
    VP
    VP
    VP
    Humidity
    81%
    83%
    84%
    84%
    84%
    84%
    84%
    84%
    83%
    83%
    86%
    92%
    93%
    96%
    97%
    98%
    98%
    98%
    98%
    99%
    99%
    99%
    99%
    99%
    UV - - - - - - 1 1 1 1 1 1 1 1 1 1 1 1 1 - - - - -
    Tuesday (17 March 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 Light rain Light rain Light rain Light rain Fog Fog Light rain Fog Fog Fog Fog Fog Fog Fog Fog Fog Fog Fog Fog Fog
    Chance of precipitation
    70%
    60%
    60%
    50%
    60%
    70%
    60%
    50%
    50%
    50%
    50%
    50%
    40%
    30%
    30%
    40%
    40%
    40%
    40%
    30%
    30%
    30%
    30%
    20%
    Temperature (°C)
    Feels like temperature (°C)
    -5°
    -5°
    -5°
    -5°
    -5°
    -5°
    -5°
    -4°
    -4°
    -4°
    -4°
    -3°
    -3°
    -2°
    -2°
    -2°
    -2°
    -2°
    -2°
    -2°
    -2°
    -2°
    -2°
    -2°
    Wind direction and speed (mph)
    SSW
    37
    SSW
    39
    SSW
    40
    SSW
    40
    SSW
    35
    SSW
    35
    SSW
    34
    SSW
    35
    SSW
    35
    SSW
    36
    SSW
    36
    SSW
    37
    SSW
    37
    SSW
    36
    SSW
    36
    SSW
    34
    SSW
    39
    SSW
    36
    SSW
    34
    SSW
    31
    SSW
    30
    SSW
    28
    SSW
    26
    SSW
    24
    Wind gust (mph)
    41
    42
    43
    44
    38
    38
    38
    38
    39
    39
    40
    40
    40
    40
    39
    38
    43
    40
    37
    35
    33
    31
    29
    27
    Visibility (description)
    VP
    VP
    P
    VP
    P
    P
    P
    P
    P
    P
    M
    M
    M
    M
    M
    M
    M
    P
    P
    P
    P
    P
    P
    P
    Humidity
    99%
    98%
    98%
    98%
    97%
    96%
    96%
    96%
    95%
    95%
    92%
    92%
    91%
    89%
    87%
    86%
    88%
    91%
    92%
    93%
    93%
    94%
    95%
    96%
    UV - - - - - - 1 1 1 1 1 1 2 1 1 1 1 1 1 - - - - -
    Wednesday (18 March 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 Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny day Sunny day Sunny day Clear night Clear night Clear night Clear night Clear night Clear night
    Chance of precipitation
    20%
    20%
    20%
    20%
    20%
    20%
    10%
    10%
    10%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    Temperature (°C)
    10°
    Feels like temperature (°C)
    -2°
    -2°
    -2°
    -1°
    -1°
    -1°
    -1°
    Wind direction and speed (mph)
    SSW
    22
    SSW
    20
    SSW
    18
    SSW
    17
    S
    12
    S
    11
    SSE
    11
    SSE
    10
    SE
    9
    SE
    9
    SE
    9
    ESE
    9
    ESE
    10
    ESE
    11
    SE
    11
    ESE
    11
    E
    13
    E
    15
    E
    17
    E
    18
    E
    19
    E
    20
    E
    20
    E
    21
    Wind gust (mph)
    25
    23
    20
    18
    13
    12
    12
    11
    10
    9
    10
    11
    13
    14
    14
    15
    16
    17
    18
    20
    21
    22
    23
    23
    Visibility (description)
    P
    P
    VP
    VP
    VP
    VP
    VP
    VP
    P
    M
    M
    VG
    VG
    VG
    VG
    E
    VG
    VG
    VG
    G
    G
    G
    G
    G
    Humidity
    96%
    97%
    97%
    97%
    97%
    97%
    97%
    96%
    92%
    86%
    80%
    73%
    68%
    66%
    64%
    64%
    64%
    68%
    76%
    79%
    82%
    82%
    82%
    82%
    UV - - - - - - 1 1 1 1 2 2 2 2 2 1 1 1 1 - - - - -
    Thursday (19 March 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 Clear night Clear night Clear night Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Clear night Clear night Clear night Clear night Clear night Clear night
    Chance of precipitation
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    10%
    10%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    Temperature (°C)
    Feels like temperature (°C)
    -1°
    -1°
    -1°
    -1°
    -1°
    -1°
    -2°
    -1°
    -1°
    -2°
    -2°
    -3°
    -4°
    Wind direction and speed (mph)
    E
    21
    E
    22
    E
    22
    E
    22
    ESE
    21
    ESE
    19
    ESE
    19
    ESE
    17
    ESE
    15
    E
    14
    E
    15
    E
    15
    E
    16
    ESE
    16
    ESE
    16
    ESE
    16
    ESE
    15
    E
    18
    E
    16
    E
    15
    ESE
    15
    ESE
    15
    ESE
    15
    ESE
    19
    Wind gust (mph)
    24
    24
    24
    24
    23
    21
    20
    19
    16
    15
    16
    17
    17
    17
    17
    17
    17
    20
    17
    17
    17
    16
    17
    21
    Visibility (description)
    M
    G
    M
    M
    M
    G
    M
    G
    G
    G
    G
    G
    G
    G
    G
    G
    G
    G
    G
    M
    M
    M
    M
    M
    Humidity
    82%
    81%
    80%
    80%
    79%
    79%
    78%
    77%
    76%
    72%
    67%
    64%
    61%
    59%
    58%
    57%
    59%
    65%
    79%
    85%
    89%
    89%
    90%
    91%
    UV - - - - - - 1 1 1 1 2 2 2 2 2 1 1 1 1 - - - - -
    Friday (20 March 2026)
    Time
    00:00
    03:00
    06:00
    09:00
    12:00
    15:00
    18:00
    21:00
    Weather symbols Clear night Fog Mist Sunny day Sunny day Sunny day Clear night Clear night
    Chance of precipitation
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    Temperature (°C)
    -1°
    Feels like temperature (°C)
    -5°
    -6°
    -6°
    -2°
    -4°
    Wind direction and speed (mph)
    ESE
    18
    ESE
    17
    SE
    12
    E
    12
    ESE
    13
    SSE
    22
    SE
    15
    ENE
    13
    Wind gust (mph)
    20
    19
    14
    14
    17
    25
    17
    15
    Visibility (description)
    M
    P
    P
    M
    G
    VG
    G
    M
    Humidity
    92%
    95%
    96%
    82%
    66%
    57%
    78%
    91%
    UV - - 1 1 3 1 1 -
    Saturday (21 March 2026)
    Time
    00:00
    03:00
    06:00
    09:00
    12:00
    15:00
    18:00
    21:00
    Weather symbols Clear night Clear night Sunny intervals Sunny day Sunny day Sunny intervals Clear night Clear night
    Chance of precipitation
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    Temperature (°C)
    -1°
    -1°
    -2°
    Feels like temperature (°C)
    -6°
    -7°
    -7°
    -2°
    -1°
    -5°
    Wind direction and speed (mph)
    E
    14
    ENE
    11
    E
    11
    ENE
    11
    E
    15
    E
    22
    E
    16
    ENE
    12
    Wind gust (mph)
    15
    12
    12
    15
    17
    24
    18
    13
    Visibility (description)
    M
    M
    M
    M
    G
    G
    G
    M
    Humidity
    92%
    93%
    94%
    78%
    64%
    58%
    75%
    91%
    UV - - 1 1 3 1 1 -

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    WARNING
    Flood alerts icon
    Flood alerts in force for Wales
    Flood alerts in force for Wales

    Wales weather forecast

    Headline:

    Rain spreading east, blustery showers following.

    Today:

    Cloudy with outbreaks of rain spreading eastwards this morning. Blustery showers following during the afternoon, these locally heavy and again turning wintry over hills and mountains. Feeling chilly, especially in the wind. Maximum temperature 11 °C.

    Tonight:

    Showers soon fading with some sunny spells likely before sunset. Clear spells and the odd isolated shower possible overnight, but most places remaining dry. Chilly, especially in rural spots. Minimum temperature 0 °C.

    Monday:

    A dry but bright start on Monday, however it will cloud over from the west with outbreaks of rain and drizzle reaching Wales during the afternoon. Rather breezy. Maximum temperature 12 °C.

    Outlook for Tuesday to Thursday:

    Often cloudy on Tuesday with some drizzle, especially over the hills. Mostly dry from Wednesday with plenty of spring sunshine. Feeling rather warm, despite the breezy conditions.

    Updated:

    UK long range weather forecast

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