Trawsfynydd (Gwynedd) weather

Forecast days

Mist changing to heavy rain by nighttime.
Sunrise iconSunrise:
Sunset iconSunset:
H UV
L Pollution

    7 day forecast for Trawsfynydd

    Today (24 June 2025)
    Time
    20:00
    21:00
    22:00
    23:00
    Weather symbols Mist Light rain Heavy rain Heavy rain
    Chance of precipitation
    40%
    70%
    ≥95%
    ≥95%
    Temperature
    15°
    15°
    14°
    14°
    Feels like temperature (°C)
    12°
    12°
    12°
    12°
    Wind direction and speed
    SW
    15
    SW
    15
    SW
    14
    WSW
    14
    Wind gust (mph)
    29
    28
    28
    27
    Visibility
    P
    P
    P
    P
    Humidity
    100%
    100%
    100%
    99%
    UV 1 1 - -
    Wednesday (25 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 Heavy rain Light rain Light rain Light rain Overcast Overcast Overcast Overcast Overcast Overcast Overcast Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Cloudy Cloudy Overcast Overcast Overcast Overcast
    Chance of precipitation
    ≥95%
    90%
    80%
    60%
    40%
    40%
    20%
    20%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    20%
    20%
    20%
    30%
    40%
    50%
    Temperature (°C)
    14°
    14°
    14°
    14°
    14°
    13°
    13°
    14°
    14°
    15°
    16°
    16°
    16°
    17°
    17°
    17°
    17°
    17°
    17°
    16°
    16°
    16°
    15°
    15°
    Feels like temperature (°C)
    12°
    12°
    13°
    13°
    13°
    13°
    13°
    13°
    14°
    14°
    14°
    15°
    15°
    15°
    15°
    15°
    15°
    15°
    15°
    15°
    15°
    15°
    15°
    14°
    Wind direction and speed (mph)
    WSW
    13
    WSW
    11
    WSW
    9
    WSW
    8
    WSW
    6
    WSW
    5
    WSW
    5
    WSW
    5
    WSW
    6
    SW
    7
    SW
    8
    SW
    10
    SW
    11
    SW
    11
    SW
    11
    SW
    11
    SW
    11
    SW
    10
    SW
    10
    SW
    9
    SW
    8
    SSW
    7
    SSW
    7
    SSW
    8
    Wind gust (mph)
    27
    24
    21
    18
    14
    11
    10
    12
    14
    16
    20
    22
    24
    25
    25
    25
    24
    22
    19
    18
    15
    15
    17
    19
    Visibility (description)
    P
    P
    M
    M
    G
    G
    VG
    VG
    VG
    VG
    VG
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    VG
    VG
    VG
    Humidity
    100%
    100%
    100%
    99%
    97%
    96%
    96%
    94%
    91%
    88%
    84%
    82%
    79%
    75%
    73%
    73%
    73%
    73%
    76%
    78%
    84%
    88%
    92%
    93%
    UV - - - - 1 1 1 1 1 3 4 5 6 7 6 4 3 2 1 1 1 1 - -
    Thursday (26 June 2025)
    Time
    00:00
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Overcast Light rain Heavy rain Light shower day Sunny intervals Sunny intervals Sunny intervals Sunny intervals Overcast
    Chance of precipitation
    40%
    80%
    90%
    70%
    30%
    20%
    10%
    30%
    40%
    Temperature (°C)
    15°
    15°
    15°
    15°
    15°
    16°
    15°
    14°
    13°
    Feels like temperature (°C)
    14°
    14°
    13°
    13°
    13°
    13°
    12°
    11°
    11°
    Wind direction and speed (mph)
    SSW
    8
    SSW
    9
    SSW
    11
    SW
    12
    WSW
    14
    WSW
    15
    WSW
    17
    SW
    15
    SW
    14
    Wind gust (mph)
    20
    24
    27
    30
    32
    34
    34
    32
    32
    Visibility (description)
    VG
    VG
    G
    M
    E
    E
    E
    E
    E
    Humidity
    94%
    95%
    97%
    98%
    92%
    69%
    67%
    77%
    86%
    UV - - 1 1 3 6 3 1 -
    Friday (27 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 Overcast Overcast Light rain Light rain Light rain Light rain
    Chance of precipitation
    70%
    60%
    50%
    40%
    50%
    60%
    60%
    60%
    Temperature (°C)
    13°
    14°
    15°
    16°
    17°
    17°
    17°
    16°
    Feels like temperature (°C)
    11°
    11°
    12°
    13°
    13°
    13°
    13°
    13°
    Wind direction and speed (mph)
    SSW
    15
    SSW
    18
    SW
    18
    SW
    20
    SW
    22
    SW
    21
    SW
    21
    SW
    21
    Wind gust (mph)
    35
    37
    38
    38
    38
    38
    38
    37
    Visibility (description)
    E
    VG
    VG
    VG
    VG
    G
    G
    M
    Humidity
    89%
    94%
    95%
    92%
    91%
    98%
    98%
    99%
    UV - 1 1 2 3 2 1 -
    Saturday (28 June 2025)
    Time
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Overcast Cloudy Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Partly cloudy night
    Chance of precipitation
    50%
    40%
    30%
    30%
    30%
    20%
    10%
    10%
    Temperature (°C)
    15°
    15°
    14°
    16°
    17°
    17°
    16°
    14°
    Feels like temperature (°C)
    12°
    12°
    13°
    14°
    15°
    15°
    15°
    14°
    Wind direction and speed (mph)
    SW
    20
    SW
    15
    WSW
    12
    WSW
    12
    SW
    12
    SW
    11
    WSW
    8
    SSW
    4
    Wind gust (mph)
    34
    28
    24
    23
    23
    21
    16
    9
    Visibility (description)
    G
    G
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    99%
    98%
    97%
    85%
    77%
    72%
    79%
    92%
    UV - 1 1 3 5 3 1 -
    Sunday (29 June 2025)
    Time
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Cloudy Overcast Overcast Cloudy Sunny intervals Cloudy Overcast Overcast
    Chance of precipitation
    20%
    20%
    30%
    20%
    20%
    20%
    20%
    20%
    Temperature (°C)
    13°
    13°
    14°
    16°
    18°
    18°
    17°
    16°
    Feels like temperature (°C)
    13°
    13°
    14°
    15°
    16°
    17°
    16°
    15°
    Wind direction and speed (mph)
    S
    4
    S
    5
    S
    7
    SSW
    10
    SW
    11
    SW
    12
    SW
    11
    SSW
    9
    Wind gust (mph)
    9
    7
    11
    16
    18
    17
    12
    10
    Visibility (description)
    G
    G
    G
    G
    G
    G
    G
    M
    Humidity
    94%
    96%
    94%
    92%
    84%
    84%
    88%
    95%
    UV - 1 1 2 4 4 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
    30%
    30%
    30%
    30%
    30%
    30%
    30%
    20%
    Temperature (°C)
    15°
    15°
    15°
    16°
    18°
    18°
    17°
    14°
    Feels like temperature (°C)
    14°
    13°
    13°
    15°
    16°
    16°
    16°
    13°
    Wind direction and speed (mph)
    SW
    9
    SSW
    9
    SSW
    9
    SW
    10
    WSW
    11
    W
    11
    W
    9
    W
    6
    Wind gust (mph)
    10
    10
    11
    12
    14
    16
    11
    7
    Visibility (description)
    M
    M
    M
    G
    G
    VG
    VG
    G
    Humidity
    96%
    97%
    94%
    88%
    81%
    74%
    78%
    92%
    UV - 1 1 3 6 4 1 -

    UK video forecast

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    Wales weather forecast

    Headline:

    Mainly cloudy with spells of rain across the mountains.

    This Evening and Tonight:

    Cloud steadily thickens from the west through this evening, bringing widespread hill cloud and spells of light rain and drizzle across the higher ground. Some further spells of rain possible around the coasts overnight. Mild with winds gradually easing. Minimum temperature 11 °C.

    Wednesday:

    Cloudy at first but becoming brighter through the day with even a few breaks to sunshine. Feeling warm and humid, with scattered showers spreading from the south by the evening. Maximum temperature 24 °C.

    Outlook for Thursday to Saturday:

    A mainly cloudy period with spells of rain at times, but some drier interludes as well. Breezy at times, but winds easing by Saturday. Increasingly warm and feeling rather humid.

    Updated:

    UK long range weather forecast

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