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Aberffraw Bay (Traeth Mawr) (Beach) (Isle of Anglesey) weather

Here are our top tips to keep you, your friends and family safe at the beach with links to Royal National Lifeboat Institution (RNLI) and Met Office advice.



Forecast days

Light showers changing to partly cloudy by early evening.
Beach safety today
Use caution in the sea. Waves can be bigger or stronger than you expect, strong rips likely, strong wind may blow you off course
  • • unsafe for novice surfers
  • • paddle boarding/kayaking not recommended at any level

Tide: Next low tide (1.4m) at

Sunrise iconSunrise:
Sunset iconSunset:
L UV
L Pollution
No pollen data.

    7 day forecast for Aberffraw Bay (Traeth Mawr) (Beach)

    Today (20 November 2025)
    Time
    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 day Light shower day Sunny intervals Light shower day Light shower day Light shower night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night
    Chance of precipitation
    60%
    60%
    40%
    80%
    70%
    50%
    30%
    30%
    40%
    40%
    50%
    30%
    20%
    Temperature
    Feels like temperature (°C)
    Wind direction and speed
    NNW
    11
    N
    12
    NNW
    12
    NNW
    12
    NNW
    11
    N
    10
    N
    10
    N
    10
    NNE
    9
    N
    9
    N
    7
    N
    7
    N
    7
    Wind gust (mph)
    30
    30
    30
    30
    28
    24
    24
    24
    24
    22
    17
    16
    16
    Visibility
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    Humidity
    78%
    73%
    73%
    74%
    75%
    80%
    72%
    71%
    72%
    74%
    76%
    77%
    78%
    UV 1 1 1 1 1 1 - - - - - - -
    Wind direction and speed
    11
    12
    12
    12
    11
    10
    9
    9
    9
    9
    8
    7
    7
    Height of waves offshore (m)
    0.8
    0.9
    1.0
    1.0
    0.9
    0.9
    0.8
    0.8
    0.8
    0.7
    0.7
    0.7
    0.6
    Period of waves offshore (s)
    6
    6
    6
    6
    6
    6
    6
    6
    6
    7
    7
    7
    6
    Direction of waves offshore
    Friday (21 November 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 Partly cloudy night Partly cloudy night Clear night Partly cloudy night Clear night Clear night Clear night Clear night Sunny day Sunny day 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 Cloudy Overcast Overcast
    Chance of precipitation
    30%
    30%
    10%
    20%
    10%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    10%
    10%
    10%
    10%
    10%
    <5%
    <5%
    <5%
    <5%
    <5%
    20%
    50%
    Temperature (°C)
    Feels like temperature (°C)
    -1°
    -1°
    -1°
    -2°
    -2°
    Wind direction and speed (mph)
    N
    6
    N
    5
    N
    5
    N
    4
    NNE
    5
    NNE
    5
    NNE
    4
    ENE
    4
    ENE
    4
    ESE
    3
    SE
    4
    SSE
    5
    S
    7
    S
    8
    SSW
    9
    SSW
    9
    SSW
    10
    SSW
    11
    SW
    13
    SW
    15
    SW
    16
    SW
    17
    SW
    19
    SSW
    20
    Wind gust (mph)
    14
    12
    9
    10
    10
    9
    8
    8
    8
    7
    10
    11
    14
    15
    18
    20
    23
    25
    27
    28
    29
    31
    33
    35
    Visibility (description)
    E
    E
    E
    E
    E
    E
    E
    E
    E
    VG
    VG
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    Humidity
    80%
    82%
    85%
    85%
    86%
    82%
    84%
    86%
    87%
    86%
    81%
    76%
    72%
    69%
    72%
    75%
    80%
    80%
    68%
    63%
    62%
    63%
    64%
    66%
    UV - - - - - - - 1 1 1 1 1 1 1 1 1 1 - - - - - - -
    Wind direction and speed (mph)
    6
    5
    5
    5
    5
    5
    4
    4
    4
    3
    4
    5
    7
    8
    9
    9
    10
    11
    13
    15
    16
    17
    18
    20
    Height of waves offshore (m)
    0.5
    0.5
    0.4
    0.4
    0.4
    0.3
    0.3
    0.3
    0.3
    0.3
    0.3
    0.3
    0.3
    0.3
    0.3
    0.4
    0.4
    0.5
    0.6
    0.7
    0.8
    0.9
    1.0
    1.1
    Period of waves offshore (s)
    6
    6
    5
    5
    5
    4
    4
    4
    4
    4
    4
    4
    4
    4
    4
    3
    3
    3
    4
    4
    4
    4
    5
    5
    Direction of waves offshore
    Saturday (22 November 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 Light rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy shower night Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Cloudy Cloudy Cloudy Cloudy Light rain Light rain Heavy rain Heavy rain Heavy rain Heavy rain
    Chance of precipitation
    70%
    90%
    ≥95%
    ≥95%
    ≥95%
    90%
    70%
    60%
    50%
    40%
    30%
    30%
    30%
    40%
    40%
    40%
    40%
    50%
    60%
    70%
    70%
    80%
    80%
    80%
    Temperature (°C)
    10°
    10°
    10°
    10°
    10°
    Feels like temperature (°C)
    Wind direction and speed (mph)
    SSW
    21
    SSW
    22
    SSW
    22
    SSW
    23
    SSW
    23
    SSW
    21
    SW
    19
    WSW
    15
    W
    12
    WNW
    9
    WNW
    8
    W
    8
    WSW
    8
    WSW
    8
    SW
    9
    SSW
    8
    SSW
    9
    S
    9
    S
    10
    S
    11
    S
    12
    S
    14
    SSW
    15
    SSW
    16
    Wind gust (mph)
    38
    40
    39
    41
    40
    35
    26
    21
    18
    14
    12
    11
    15
    12
    12
    11
    12
    14
    15
    15
    17
    17
    18
    28
    Visibility (description)
    E
    G
    M
    M
    M
    M
    M
    VG
    VG
    VG
    VG
    E
    E
    E
    E
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    G
    G
    Humidity
    74%
    82%
    89%
    92%
    93%
    94%
    93%
    94%
    93%
    94%
    91%
    87%
    86%
    85%
    86%
    90%
    91%
    91%
    92%
    92%
    93%
    93%
    92%
    92%
    UV - - - - - - - 1 1 1 1 1 1 1 1 1 1 - - - - - - -
    Wind direction and speed (mph)
    21
    21
    22
    22
    22
    22
    19
    16
    13
    10
    10
    8
    8
    8
    9
    9
    10
    10
    10
    11
    12
    14
    15
    16
    Height of waves offshore (m)
    1.2
    1.4
    1.6
    1.8
    2.1
    2.2
    2.1
    1.8
    1.5
    1.4
    1.3
    1.2
    1.1
    1.1
    1.0
    1.0
    1.0
    1.0
    1.0
    0.9
    0.9
    0.8
    0.8
    0.7
    Period of waves offshore (s)
    5
    6
    6
    6
    7
    7
    7
    7
    7
    7
    7
    7
    7
    7
    7
    7
    7
    7
    7
    7
    7
    7
    7
    7
    Direction of waves offshore
    Sunday (23 November 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 Light rain Light shower night Light shower night Light shower night Light shower night Light shower night Light shower night Light shower night Light rain Light rain Light rain Light rain Light rain Light shower day Light shower day Light shower day Light shower night Light shower night Light shower night Light shower night Light shower night Light shower night Light shower night Light shower night
    Chance of precipitation
    70%
    60%
    60%
    60%
    60%
    60%
    50%
    60%
    60%
    60%
    70%
    70%
    60%
    60%
    70%
    60%
    60%
    70%
    60%
    60%
    60%
    50%
    50%
    60%
    Temperature (°C)
    Feels like temperature (°C)
    Wind direction and speed (mph)
    SW
    17
    SW
    19
    SW
    20
    WSW
    19
    W
    19
    W
    20
    W
    20
    W
    20
    W
    20
    W
    21
    W
    22
    W
    22
    W
    22
    W
    21
    W
    22
    W
    22
    WNW
    21
    WNW
    21
    WNW
    22
    WNW
    22
    WNW
    21
    WNW
    20
    WNW
    19
    WNW
    18
    Wind gust (mph)
    30
    33
    37
    33
    38
    38
    38
    38
    38
    38
    41
    39
    41
    41
    40
    40
    39
    41
    41
    38
    37
    36
    36
    31
    Visibility (description)
    VG
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    Humidity
    92%
    90%
    89%
    87%
    84%
    82%
    81%
    81%
    82%
    81%
    80%
    82%
    79%
    78%
    81%
    80%
    79%
    80%
    79%
    78%
    78%
    80%
    81%
    80%
    UV - - - - - - - 1 1 1 1 1 1 1 1 1 1 - - - - - - -
    Wind direction and speed (mph)
    17
    18
    19
    19
    18
    19
    20
    19
    20
    21
    21
    22
    22
    21
    21
    21
    20
    20
    21
    21
    20
    19
    18
    17
    Height of waves offshore (m)
    0.7
    0.6
    0.6
    0.6
    0.6
    0.6
    0.6
    0.6
    0.6
    0.5
    0.5
    0.5
    0.6
    0.6
    0.7
    0.8
    1.4
    1.8
    1.8
    1.8
    1.8
    1.8
    1.7
    1.7
    Period of waves offshore (s)
    7
    7
    7
    7
    7
    7
    7
    7
    7
    7
    7
    7
    7
    7
    7
    7
    6
    7
    7
    7
    7
    7
    7
    7
    Direction of waves offshore
    Monday (24 November 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 Light shower night Light shower night Light shower night Light shower night Light shower night Light shower night Light shower night Light shower night Light shower day Light shower day Light shower day Light shower day Light shower day Light shower day Light shower day Light shower day Light shower night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Light shower night Partly cloudy night
    Chance of precipitation
    60%
    60%
    70%
    70%
    70%
    70%
    70%
    70%
    70%
    70%
    70%
    60%
    60%
    60%
    60%
    60%
    50%
    50%
    50%
    50%
    50%
    50%
    50%
    50%
    Temperature (°C)
    Feels like temperature (°C)
    Wind direction and speed (mph)
    WNW
    17
    NW
    16
    WNW
    16
    NW
    14
    NW
    14
    NW
    14
    NNW
    14
    NNW
    14
    NNW
    14
    NNW
    14
    NNW
    14
    NNW
    14
    N
    14
    N
    14
    N
    14
    N
    13
    N
    13
    N
    13
    N
    13
    N
    13
    N
    13
    N
    13
    N
    13
    N
    13
    Wind gust (mph)
    31
    31
    32
    32
    33
    34
    30
    33
    34
    34
    31
    30
    31
    31
    31
    32
    32
    30
    31
    30
    29
    26
    26
    26
    Visibility (description)
    E
    E
    E
    E
    E
    E
    E
    E
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    82%
    84%
    84%
    84%
    87%
    86%
    85%
    86%
    86%
    86%
    86%
    84%
    83%
    82%
    80%
    81%
    81%
    82%
    82%
    81%
    82%
    83%
    83%
    84%
    UV - - - - - - - 1 1 1 1 1 1 1 1 1 1 - - - - - - -
    Wind direction and speed (mph)
    16
    16
    16
    15
    14
    14
    14
    14
    14
    14
    14
    14
    14
    14
    13
    13
    13
    12
    13
    13
    13
    13
    13
    13
    Height of waves offshore (m)
    1.7
    1.6
    1.6
    1.5
    1.4
    1.4
    1.4
    1.4
    1.3
    1.3
    1.2
    1.2
    1.1
    1.0
    1.0
    0.9
    0.8
    0.8
    0.7
    0.7
    0.6
    0.6
    0.5
    0.5
    Period of waves offshore (s)
    6
    6
    6
    6
    6
    6
    6
    6
    6
    6
    6
    6
    6
    5
    5
    5
    5
    5
    5
    5
    5
    5
    7
    7
    Direction of waves offshore
    Tuesday (25 November 2025)
    Time
    00:00
    03:00
    06:00
    09:00
    12:00
    15:00
    18:00
    21:00
    Weather symbols Partly cloudy night Partly cloudy night Partly cloudy night Sunny intervals Sunny intervals Partly cloudy night Partly cloudy night Partly cloudy night
    Chance of precipitation
    40%
    30%
    20%
    10%
    10%
    <5%
    <5%
    10%
    Temperature (°C)
    Feels like temperature (°C)
    Wind direction and speed (mph)
    N
    13
    N
    12
    N
    12
    N
    11
    NNE
    12
    NNE
    10
    NNE
    8
    NE
    7
    Wind gust (mph)
    24
    23
    22
    22
    20
    14
    8
    8
    Visibility (description)
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    G
    Humidity
    83%
    83%
    83%
    82%
    73%
    77%
    85%
    89%
    UV - - - 1 1 1 - -
    Wind direction and speed (mph)
    13
    12
    12
    11
    13
    10
    8
    7
    Height of waves offshore (m)
    0.5
    0.8
    0.7
    0.6
    0.6
    0.4
    0.3
    0.3
    Period of waves offshore (s)
    7
    5
    6
    5
    5
    5
    5
    4
    Direction of waves offshore
    Wednesday (26 November 2025)
    Time
    00:00
    03:00
    06:00
    09:00
    12:00
    15:00
    18:00
    21:00
    Weather symbols Partly cloudy night Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy
    Chance of precipitation
    <5%
    10%
    10%
    10%
    10%
    10%
    10%
    20%
    Temperature (°C)
    Feels like temperature (°C)
    Wind direction and speed (mph)
    ENE
    7
    ESE
    7
    ESE
    8
    SE
    8
    SSE
    10
    S
    10
    S
    9
    S
    11
    Wind gust (mph)
    7
    8
    8
    8
    10
    11
    10
    11
    Visibility (description)
    G
    G
    G
    G
    VG
    VG
    G
    G
    Humidity
    90%
    89%
    94%
    89%
    78%
    82%
    90%
    88%
    UV - - - 1 1 1 - -
    Wind direction and speed (mph)
    7
    Height of waves offshore (m)
    0.3
    Period of waves offshore (s)
    4
    Direction of waves offshore

    Tide times

    Thursday 20 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Thursday 20 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Thursday 20 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Thursday 20 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Friday 21 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Friday 21 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Friday 21 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Friday 21 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Saturday 22 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Saturday 22 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Saturday 22 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Saturday 22 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Sunday 23 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Sunday 23 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Sunday 23 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Sunday 23 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Monday 24 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Monday 24 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Monday 24 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Monday 24 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Tuesday 25 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Tuesday 25 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Tuesday 25 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Tuesday 25 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Wednesday 26 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Wednesday 26 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Wednesday 26 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Tide times

    Wednesday 26 November

    Tide times and heights are from Porth Trecastell tidal station which is 2.0 miles away. So times may be different at this beach. What does this mean?

    Contains ADMIRALTY® tidal data: © Crown Copyright and database right.

    Aberffraw Bay (Traeth Mawr) (Beach) weather map

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

    Wales weather forecast

    Headline:

    Blustery showers in the west, brighter in the east.

    Today:

    A chilly start with widespread frost and ice. Largely fine and dry in the east, with plenty of sunny intervals. Showers persist in the west, wintry at times, with further sleet and snow expected, particularly on hills. Brisk northerly winds. Maximum temperature 7 °C.

    Tonight:

    Remaining clear and dry in the east, and showers gradually easing in the west, though the odd shower will persist. Winds starting to ease, but remaining breezy in the west. Minimum temperature -3 °C.

    Friday:

    Showers continuing to fade. Turning increasingly cloudy from the west through the afternoon, as a band of rain pushes eastwards overnight. Milder air building in and winds easing. Maximum temperature 7 °C.

    Outlook for Saturday to Monday:

    Remaining cloudy and changeable from Saturday, as bands of rain and showers push eastwards across the country. Breezy at times, but feeling milder as temperatures return to near average.

    Updated:

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