A beta version of the Met Office app is available.

Porth Trecastell (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.
Beach safety today
Use caution in the sea. Waves can be bigger or stronger than you expect, strong rips likely, the wind may blow you off course
  • • unsafe for novice surfers
  • • paddle boarding not recommended for beginners/intermediate

Tide: Next low tide (1.3m) at

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

    7 day forecast for Porth Trecastell (Beach)

    Today (10 November 2025)
    Time
    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
    Chance of precipitation
    70%
    50%
    70%
    50%
    50%
    Temperature
    10°
    10°
    10°
    10°
    10°
    Feels like temperature (°C)
    Wind direction and speed
    SSW
    12
    SSW
    12
    SW
    12
    SSW
    12
    SSW
    13
    Wind gust (mph)
    20
    20
    21
    21
    20
    Visibility
    E
    E
    E
    E
    E
    Humidity
    82%
    78%
    76%
    76%
    76%
    UV - - - - -
    Wind direction and speed
    12
    12
    12
    12
    13
    Height of waves offshore (m)
    0.8
    0.9
    0.9
    0.9
    0.9
    Period of waves offshore (s)
    8
    8
    8
    8
    5
    Direction of waves offshore
    Tuesday (11 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 Cloudy Light rain Light rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Light shower day Light shower day Cloudy Cloudy Cloudy Heavy rain Heavy rain Heavy rain Light rain Light shower night Cloudy Partly cloudy night Partly cloudy night
    Chance of precipitation
    30%
    20%
    30%
    60%
    90%
    90%
    ≥95%
    ≥95%
    ≥95%
    ≥95%
    90%
    70%
    50%
    40%
    40%
    50%
    80%
    90%
    90%
    70%
    50%
    40%
    30%
    20%
    Temperature (°C)
    10°
    10°
    10°
    11°
    10°
    10°
    10°
    11°
    11°
    12°
    13°
    14°
    14°
    14°
    14°
    14°
    14°
    14°
    14°
    14°
    14°
    14°
    13°
    13°
    Feels like temperature (°C)
    10°
    10°
    10°
    10°
    Wind direction and speed (mph)
    SSW
    13
    SSW
    15
    S
    16
    S
    17
    S
    18
    SSE
    20
    SE
    22
    SE
    24
    SSE
    26
    S
    27
    S
    28
    S
    28
    S
    28
    S
    27
    S
    27
    SSE
    27
    SSE
    28
    SSE
    30
    SSE
    32
    S
    33
    S
    32
    SSW
    29
    SSW
    27
    SSW
    25
    Wind gust (mph)
    21
    22
    24
    26
    29
    31
    33
    37
    39
    41
    41
    40
    40
    39
    39
    38
    40
    42
    48
    44
    38
    35
    33
    31
    Visibility (description)
    E
    E
    E
    E
    E
    M
    M
    M
    M
    M
    G
    VG
    VG
    VG
    VG
    VG
    VG
    M
    M
    VG
    E
    E
    E
    E
    Humidity
    76%
    76%
    77%
    79%
    82%
    85%
    88%
    86%
    89%
    91%
    90%
    89%
    87%
    86%
    86%
    86%
    85%
    85%
    87%
    86%
    87%
    87%
    86%
    85%
    UV - - - - - - - 1 1 1 1 1 1 1 1 1 1 - - - - - - -
    Wind direction and speed (mph)
    13
    15
    16
    17
    18
    20
    22
    24
    26
    27
    28
    28
    28
    27
    27
    27
    28
    30
    32
    33
    32
    29
    27
    25
    Height of waves offshore (m)
    0.9
    0.9
    0.9
    0.9
    1.0
    1.0
    1.1
    1.1
    1.3
    1.6
    1.9
    2.0
    2.3
    2.2
    2.2
    2.2
    2.2
    2.1
    2.2
    2.4
    2.5
    2.5
    2.3
    2.1
    Period of waves offshore (s)
    5
    5
    5
    5
    5
    6
    6
    6
    6
    7
    8
    8
    8
    8
    9
    9
    9
    9
    9
    9
    9
    9
    10
    9
    Direction of waves offshore
    Wednesday (12 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 Partly cloudy night Partly cloudy night Clear night Partly cloudy night Clear night Partly cloudy night Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Cloudy Cloudy Cloudy Cloudy Cloudy Light rain Light rain Heavy rain Heavy rain Heavy rain Heavy rain
    Chance of precipitation
    10%
    20%
    20%
    20%
    10%
    10%
    10%
    10%
    <5%
    <5%
    <5%
    10%
    10%
    20%
    30%
    30%
    40%
    50%
    70%
    70%
    70%
    80%
    80%
    80%
    Temperature (°C)
    13°
    13°
    13°
    13°
    12°
    12°
    12°
    12°
    12°
    12°
    13°
    13°
    13°
    13°
    13°
    13°
    12°
    12°
    12°
    12°
    12°
    12°
    12°
    12°
    Feels like temperature (°C)
    10°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    10°
    10°
    10°
    10°
    10°
    Wind direction and speed (mph)
    SSW
    24
    SSW
    22
    SSW
    21
    SSW
    20
    SSW
    19
    SSW
    19
    SSW
    18
    SSW
    16
    SSW
    15
    S
    14
    S
    13
    S
    13
    S
    12
    SSE
    11
    SSE
    10
    SE
    9
    ESE
    9
    ESE
    8
    SE
    8
    ESE
    9
    ESE
    10
    ESE
    11
    ESE
    11
    ESE
    12
    Wind gust (mph)
    29
    28
    26
    23
    21
    20
    19
    17
    15
    16
    15
    15
    12
    12
    11
    11
    11
    12
    14
    15
    17
    17
    19
    20
    Visibility (description)
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    G
    G
    G
    Humidity
    84%
    85%
    84%
    84%
    81%
    83%
    83%
    83%
    83%
    86%
    88%
    87%
    86%
    86%
    86%
    87%
    89%
    90%
    90%
    90%
    91%
    91%
    92%
    92%
    UV - - - - - - - 1 1 1 1 1 1 1 1 1 1 - - - - - - -
    Wind direction and speed (mph)
    24
    22
    21
    20
    19
    19
    18
    16
    15
    14
    13
    13
    12
    11
    10
    9
    9
    8
    8
    9
    10
    11
    11
    12
    Height of waves offshore (m)
    2.0
    1.8
    1.7
    1.6
    1.5
    1.5
    1.4
    1.3
    1.2
    1.2
    1.1
    1.1
    1.0
    1.0
    0.9
    0.9
    0.9
    0.8
    0.8
    0.8
    0.8
    0.8
    0.7
    0.7
    Period of waves offshore (s)
    10
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    10
    10
    10
    Direction of waves offshore
    Thursday (13 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 Heavy rain 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 Partly cloudy 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
    70%
    60%
    60%
    60%
    50%
    30%
    30%
    20%
    20%
    20%
    20%
    30%
    30%
    30%
    20%
    20%
    20%
    20%
    10%
    10%
    10%
    10%
    10%
    10%
    Temperature (°C)
    12°
    12°
    12°
    12°
    12°
    12°
    12°
    12°
    12°
    12°
    13°
    13°
    13°
    13°
    13°
    13°
    12°
    11°
    11°
    10°
    10°
    10°
    10°
    10°
    Feels like temperature (°C)
    10°
    10°
    10°
    10°
    10°
    10°
    11°
    11°
    11°
    11°
    10°
    10°
    Wind direction and speed (mph)
    ESE
    13
    SE
    14
    S
    15
    S
    16
    SSW
    16
    SSW
    16
    SSW
    16
    SSW
    15
    S
    14
    S
    14
    S
    14
    S
    14
    S
    14
    SSW
    14
    SW
    13
    SW
    13
    E
    13
    E
    13
    ENE
    13
    ENE
    12
    ENE
    12
    ENE
    12
    ENE
    13
    ENE
    14
    Wind gust (mph)
    21
    19
    22
    24
    21
    19
    17
    17
    16
    16
    15
    15
    15
    15
    14
    14
    14
    14
    14
    13
    13
    13
    14
    14
    Visibility (description)
    G
    VG
    VG
    VG
    E
    E
    E
    E
    E
    E
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    E
    Humidity
    92%
    91%
    90%
    91%
    91%
    90%
    90%
    88%
    90%
    88%
    89%
    89%
    88%
    87%
    86%
    86%
    87%
    87%
    88%
    89%
    88%
    88%
    89%
    87%
    UV - - - - - - - 1 1 1 1 1 1 1 1 1 1 - - - - - - -
    Wind direction and speed (mph)
    13
    14
    15
    16
    16
    16
    16
    15
    14
    14
    14
    14
    14
    14
    13
    13
    13
    13
    13
    12
    12
    12
    13
    14
    Height of waves offshore (m)
    0.7
    0.8
    1.1
    1.3
    1.3
    1.3
    1.2
    1.2
    1.2
    1.1
    1.1
    1.1
    1.1
    1.0
    1.0
    1.0
    0.9
    0.9
    0.8
    0.8
    0.8
    0.8
    0.7
    0.7
    Period of waves offshore (s)
    10
    10
    10
    10
    10
    10
    10
    10
    10
    10
    10
    10
    10
    10
    10
    10
    10
    10
    10
    10
    10
    10
    10
    10
    Direction of waves offshore
    Friday (14 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 Partly cloudy night Partly cloudy night Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy
    Chance of precipitation
    10%
    10%
    10%
    10%
    10%
    10%
    20%
    20%
    30%
    30%
    30%
    40%
    40%
    40%
    50%
    50%
    40%
    50%
    50%
    50%
    50%
    50%
    50%
    50%
    Temperature (°C)
    10°
    10°
    Feels like temperature (°C)
    Wind direction and speed (mph)
    ENE
    14
    ENE
    15
    ENE
    15
    ENE
    16
    ENE
    16
    ENE
    17
    ENE
    19
    ENE
    20
    ENE
    20
    ENE
    21
    ENE
    23
    ENE
    24
    ENE
    24
    ENE
    24
    ENE
    24
    ENE
    25
    ENE
    26
    ENE
    27
    ENE
    29
    ENE
    30
    ENE
    31
    ENE
    30
    ENE
    29
    ENE
    28
    Wind gust (mph)
    16
    16
    18
    26
    29
    32
    34
    36
    36
    38
    39
    39
    39
    41
    42
    42
    42
    42
    44
    44
    44
    42
    42
    42
    Visibility (description)
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    87%
    87%
    86%
    86%
    86%
    87%
    85%
    81%
    80%
    80%
    80%
    80%
    80%
    79%
    78%
    79%
    80%
    79%
    80%
    80%
    80%
    81%
    80%
    80%
    UV - - - - - - - 1 1 1 1 1 1 1 1 1 1 - - - - - - -
    Wind direction and speed (mph)
    14
    15
    15
    16
    16
    17
    19
    20
    20
    21
    23
    24
    24
    24
    24
    25
    26
    27
    29
    30
    31
    30
    29
    28
    Height of waves offshore (m)
    0.7
    0.7
    0.7
    0.7
    0.6
    0.6
    0.7
    0.6
    0.6
    0.7
    0.7
    0.7
    0.7
    0.6
    0.6
    0.7
    0.7
    0.9
    0.9
    0.9
    0.9
    0.9
    0.9
    0.9
    Period of waves offshore (s)
    10
    10
    10
    10
    10
    10
    10
    9
    9
    9
    9
    9
    9
    9
    9
    9
    9
    6
    4
    4
    4
    4
    4
    4
    Direction of waves offshore
    Saturday (15 November 2025)
    Time
    00:00
    03:00
    06:00
    09:00
    12:00
    15:00
    18:00
    21:00
    Weather symbols Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Overcast
    Chance of precipitation
    50%
    40%
    30%
    10%
    10%
    <5%
    10%
    10%
    Temperature (°C)
    10°
    10°
    Feels like temperature (°C)
    Wind direction and speed (mph)
    ENE
    27
    ENE
    25
    ENE
    22
    ENE
    20
    ENE
    17
    ENE
    15
    ENE
    13
    ENE
    12
    Wind gust (mph)
    37
    35
    30
    28
    23
    20
    18
    14
    Visibility (description)
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    80%
    81%
    79%
    77%
    74%
    72%
    72%
    70%
    UV - - - 1 1 1 - -
    Wind direction and speed (mph)
    27
    25
    22
    20
    17
    15
    13
    12
    Height of waves offshore (m)
    0.8
    0.7
    0.7
    0.6
    0.6
    0.6
    0.5
    0.5
    Period of waves offshore (s)
    5
    9
    10
    9
    9
    9
    9
    9
    Direction of waves offshore
    Sunday (16 November 2025)
    Time
    00:00
    03:00
    06:00
    09:00
    12:00
    15:00
    18:00
    21:00
    Weather symbols Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast
    Chance of precipitation
    10%
    <5%
    <5%
    <5%
    10%
    <5%
    <5%
    <5%
    Temperature (°C)
    10°
    10°
    Feels like temperature (°C)
    Wind direction and speed (mph)
    ENE
    12
    ENE
    11
    NE
    11
    NE
    11
    NE
    12
    NE
    12
    NE
    11
    NE
    10
    Wind gust (mph)
    17
    17
    16
    16
    17
    18
    17
    14
    Visibility (description)
    G
    G
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    70%
    71%
    72%
    71%
    70%
    69%
    70%
    68%
    UV - - - 1 1 1 - -
    Wind direction and speed (mph)
    12
    Height of waves offshore (m)
    0.4
    Period of waves offshore (s)
    8
    Direction of waves offshore

    Tide times

    Monday 10 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 10 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 10 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 10 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 11 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 11 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 11 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 11 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 12 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 12 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 12 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 12 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 13 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 13 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 13 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 13 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 14 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 14 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 14 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 14 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 15 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 15 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 15 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 15 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 16 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 16 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 16 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 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 16 November

    Tide times and heights are from Porth Trecastell tidal station which is 0.5 miles away. So times may be different at this beach. What does this mean?

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

    Porth Trecastell (Beach) weather map

    View the weather with our interactive map

    Loading map...
    WARNING
    Flood alerts icon
    Flood alerts in force for Wales
    Flood alerts in force for Wales

    Wales weather forecast

    Headline:

    Increasingly cloudy with heavy rain arriving from the west.

    This Evening and Tonight:

    Scattered showers will become confined to coastal areas through this evening, with mostly dry conditions developing inland. Briefly cooler beneath clear skies before cloud thickens from the west, bringing widespread rain by dawn. Becoming windy, especially along the coasts. Minimum temperature 6 °C.

    Tuesday:

    Widely unsettled with persistent rain moving in from the southwest, heavy at times through the afternoon, making for challenging driving conditions. Windy too, with coastal gales possible, but remaining mild. Maximum temperature 15 °C.

    Outlook for Wednesday to Friday:

    Remaining unsettled throughout this week. Further periods of rain are likely, occasionally heavy and persistent for some, interspersed with some drier, clearer intervals. Staying breezy and feeling colder by Friday.

    Updated:

    UK long range weather forecast

    More from the Met Office