A beta version of the Met Office app is available.

Porth Swtan / Church Bay (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 rain changing to partly cloudy by nighttime.
Beach safety today
Large, powerful waves
  • • only experts should take part in water activities

Tide: Next high tide (4.2m) at

Sunrise iconSunrise:
Sunset iconSunset:
M UV
L Pollution

    7 day forecast for Porth Swtan / Church Bay

    Today (1 September 2025)
    Time
    17:00
    18:00
    19:00
    20:00
    21:00
    22:00
    23:00
    Weather symbols Light rain Light shower day Cloudy Light shower night Partly cloudy night Partly cloudy night Partly cloudy night
    Chance of precipitation
    50%
    60%
    50%
    50%
    30%
    10%
    10%
    Temperature
    16°
    16°
    16°
    16°
    15°
    15°
    15°
    Feels like temperature (°C)
    13°
    13°
    13°
    13°
    13°
    13°
    13°
    Wind direction and speed
    SW
    18
    SW
    17
    SW
    16
    SW
    14
    SW
    12
    SW
    12
    SW
    13
    Wind gust (mph)
    32
    29
    27
    25
    23
    25
    26
    Visibility
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    79%
    79%
    82%
    83%
    84%
    82%
    80%
    UV 2 1 1 1 - - -
    Wind direction and speed
    17
    17
    16
    14
    12
    12
    13
    Height of waves offshore (m)
    1.2
    1.1
    1.1
    1.0
    0.8
    0.8
    0.7
    Period of waves offshore (s)
    5
    5
    5
    5
    5
    5
    4
    Direction of waves offshore
    Tuesday (2 September 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 Partly cloudy night Partly cloudy night Cloudy Light shower day Light rain Heavy rain Heavy rain Heavy rain Light rain Light rain Light shower day Cloudy Sunny intervals Sunny intervals Sunny intervals Sunny intervals Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night
    Chance of precipitation
    10%
    <5%
    <5%
    <5%
    10%
    20%
    40%
    50%
    60%
    80%
    80%
    80%
    70%
    70%
    60%
    40%
    30%
    20%
    20%
    20%
    10%
    10%
    <5%
    10%
    Temperature (°C)
    15°
    15°
    14°
    14°
    13°
    13°
    13°
    13°
    14°
    15°
    15°
    16°
    16°
    16°
    16°
    17°
    17°
    17°
    17°
    16°
    15°
    14°
    14°
    14°
    Feels like temperature (°C)
    13°
    12°
    12°
    12°
    12°
    12°
    12°
    13°
    13°
    14°
    14°
    15°
    15°
    15°
    16°
    16°
    17°
    17°
    17°
    16°
    15°
    14°
    14°
    14°
    Wind direction and speed (mph)
    WSW
    13
    WSW
    12
    SW
    10
    SW
    9
    SW
    8
    SW
    7
    SSW
    6
    S
    5
    SSE
    5
    SSE
    6
    SSE
    7
    SSE
    7
    S
    7
    S
    7
    S
    6
    SW
    6
    WSW
    5
    WSW
    5
    WSW
    5
    SW
    4
    S
    4
    S
    4
    S
    4
    S
    5
    Wind gust (mph)
    25
    23
    22
    20
    18
    16
    13
    10
    13
    14
    15
    14
    11
    10
    9
    9
    8
    7
    7
    6
    8
    9
    10
    11
    Visibility (description)
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    E
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    79%
    80%
    82%
    83%
    85%
    84%
    86%
    87%
    86%
    85%
    86%
    87%
    85%
    85%
    82%
    81%
    80%
    80%
    80%
    83%
    91%
    92%
    92%
    92%
    UV - - - - - - 1 1 1 2 3 4 5 4 3 3 3 1 1 1 1 - - -
    Wind direction and speed (mph)
    13
    12
    10
    9
    8
    7
    6
    5
    5
    6
    7
    7
    7
    7
    6
    5
    5
    5
    4
    4
    4
    4
    4
    5
    Height of waves offshore (m)
    0.8
    0.7
    0.7
    0.7
    0.8
    0.7
    0.7
    0.6
    0.5
    0.5
    0.4
    0.4
    0.3
    0.3
    0.3
    0.3
    0.3
    0.3
    0.3
    0.3
    0.3
    0.3
    0.2
    0.2
    Period of waves offshore (s)
    4
    4
    4
    4
    4
    5
    8
    8
    8
    4
    4
    4
    9
    9
    9
    9
    9
    9
    9
    9
    9
    9
    9
    9
    Direction of waves offshore
    Wednesday (3 September 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 Cloudy Cloudy Cloudy Light rain Light rain Heavy rain Heavy rain Heavy rain Light rain Light rain Light rain Light shower day Light shower day Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy
    Chance of precipitation
    10%
    30%
    40%
    50%
    70%
    80%
    90%
    70%
    60%
    50%
    60%
    60%
    60%
    50%
    50%
    40%
    40%
    40%
    50%
    50%
    50%
    50%
    40%
    50%
    Temperature (°C)
    14°
    14°
    14°
    14°
    14°
    14°
    14°
    14°
    15°
    16°
    16°
    16°
    17°
    17°
    17°
    16°
    16°
    16°
    16°
    16°
    15°
    15°
    15°
    15°
    Feels like temperature (°C)
    14°
    14°
    14°
    14°
    13°
    13°
    13°
    13°
    13°
    13°
    13°
    14°
    14°
    14°
    14°
    14°
    14°
    14°
    14°
    13°
    13°
    13°
    13°
    13°
    Wind direction and speed (mph)
    S
    5
    S
    6
    SSE
    6
    SSE
    6
    SE
    8
    SE
    9
    SE
    10
    ESE
    11
    SSE
    12
    S
    15
    S
    17
    SSW
    17
    SW
    17
    SW
    16
    SW
    16
    WSW
    15
    WSW
    14
    W
    14
    WSW
    14
    WSW
    14
    W
    14
    WSW
    13
    WSW
    12
    WSW
    12
    Wind gust (mph)
    12
    12
    14
    15
    15
    15
    17
    17
    17
    17
    19
    19
    17
    17
    17
    15
    17
    19
    21
    25
    25
    26
    27
    28
    Visibility (description)
    VG
    E
    VG
    VG
    VG
    M
    G
    VG
    VG
    VG
    E
    VG
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    VG
    Humidity
    92%
    92%
    92%
    92%
    92%
    93%
    94%
    94%
    92%
    91%
    88%
    89%
    88%
    85%
    83%
    83%
    83%
    82%
    84%
    85%
    84%
    85%
    85%
    86%
    UV - - - - - - 1 1 1 1 2 3 4 5 5 4 3 1 1 1 1 - - -
    Wind direction and speed (mph)
    5
    5
    7
    9
    15
    15
    13
    12
    11
    Height of waves offshore (m)
    0.2
    0.2
    0.3
    0.4
    0.3
    0.2
    0.8
    0.8
    1.4
    Period of waves offshore (s)
    9
    9
    9
    9
    9
    9
    4
    5
    6
    Direction of waves offshore
    Thursday (4 September 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 Cloudy Cloudy Cloudy 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 intervals Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night
    Chance of precipitation
    50%
    50%
    40%
    40%
    30%
    20%
    20%
    20%
    20%
    10%
    10%
    10%
    10%
    20%
    30%
    40%
    40%
    40%
    30%
    20%
    20%
    20%
    10%
    10%
    Temperature (°C)
    15°
    14°
    14°
    14°
    14°
    14°
    14°
    14°
    14°
    15°
    15°
    16°
    16°
    17°
    17°
    17°
    16°
    16°
    16°
    16°
    15°
    15°
    15°
    15°
    Feels like temperature (°C)
    12°
    12°
    12°
    12°
    11°
    11°
    11°
    11°
    12°
    12°
    13°
    13°
    14°
    14°
    14°
    14°
    14°
    14°
    13°
    13°
    13°
    12°
    12°
    12°
    Wind direction and speed (mph)
    W
    12
    W
    13
    WSW
    13
    WSW
    13
    WSW
    13
    WSW
    13
    WSW
    13
    WSW
    13
    WSW
    13
    WSW
    14
    WSW
    15
    WSW
    15
    WSW
    15
    WSW
    15
    WSW
    15
    SW
    15
    WSW
    14
    WSW
    15
    SW
    15
    WSW
    14
    WSW
    14
    WSW
    14
    W
    15
    WSW
    15
    Wind gust (mph)
    28
    27
    26
    26
    25
    25
    25
    24
    26
    26
    27
    26
    26
    25
    25
    27
    26
    26
    25
    24
    25
    26
    25
    25
    Visibility (description)
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    E
    E
    E
    VG
    VG
    Humidity
    85%
    85%
    84%
    84%
    85%
    85%
    85%
    85%
    81%
    78%
    76%
    74%
    69%
    66%
    65%
    66%
    68%
    70%
    71%
    74%
    77%
    76%
    75%
    77%
    UV - - - - - - 1 1 1 2 2 4 5 5 5 4 2 1 1 1 - - - -
    Wind direction and speed (mph)
    13
    13
    13
    15
    16
    15
    15
    15
    Height of waves offshore (m)
    1.2
    0.8
    0.6
    0.7
    1.7
    1.5
    1.5
    1.6
    Period of waves offshore (s)
    5
    5
    5
    5
    5
    5
    5
    5
    Direction of waves offshore
    Friday (5 September 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 Partly cloudy night Partly cloudy night Partly cloudy night Sunny day Sunny intervals Sunny intervals Sunny intervals 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 Cloudy
    Chance of precipitation
    10%
    10%
    10%
    <5%
    <5%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    20%
    20%
    Temperature (°C)
    14°
    14°
    14°
    14°
    14°
    13°
    13°
    13°
    14°
    15°
    16°
    16°
    17°
    17°
    17°
    17°
    17°
    17°
    17°
    16°
    16°
    16°
    15°
    15°
    Feels like temperature (°C)
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    12°
    12°
    13°
    13°
    13°
    13°
    14°
    14°
    14°
    14°
    14°
    13°
    13°
    13°
    13°
    13°
    Wind direction and speed (mph)
    W
    15
    WSW
    15
    WSW
    15
    WSW
    15
    WSW
    15
    WSW
    15
    WSW
    14
    WSW
    14
    WSW
    14
    WSW
    15
    SW
    16
    SW
    16
    SW
    17
    SW
    17
    SW
    18
    SSW
    18
    SSW
    17
    SSW
    17
    SSW
    17
    SSW
    16
    SSW
    15
    SSW
    14
    SSW
    13
    SSW
    13
    Wind gust (mph)
    24
    24
    22
    22
    21
    24
    24
    24
    25
    25
    25
    26
    27
    28
    29
    30
    30
    30
    29
    28
    27
    27
    27
    28
    Visibility (description)
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    75%
    76%
    76%
    76%
    78%
    77%
    77%
    78%
    76%
    71%
    67%
    66%
    65%
    64%
    65%
    66%
    66%
    68%
    72%
    75%
    79%
    82%
    83%
    84%
    UV - - - - - - 1 1 1 2 3 4 5 5 4 4 2 1 1 1 - - - -
    Wind direction and speed (mph)
    16
    16
    15
    17
    19
    18
    17
    14
    Height of waves offshore (m)
    1.0
    1.0
    0.9
    0.9
    0.9
    1.0
    0.9
    0.8
    Period of waves offshore (s)
    5
    5
    5
    5
    5
    6
    6
    6
    Direction of waves offshore
    Saturday (6 September 2025)
    Time
    00:00
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy
    Chance of precipitation
    20%
    20%
    20%
    30%
    30%
    30%
    40%
    40%
    50%
    Temperature (°C)
    15°
    15°
    15°
    15°
    17°
    19°
    19°
    18°
    18°
    Feels like temperature (°C)
    13°
    13°
    13°
    13°
    14°
    15°
    16°
    16°
    16°
    Wind direction and speed (mph)
    S
    13
    S
    13
    S
    14
    S
    14
    S
    18
    S
    19
    S
    17
    SSE
    15
    SSE
    13
    Wind gust (mph)
    28
    25
    25
    29
    33
    31
    28
    23
    25
    Visibility (description)
    VG
    VG
    G
    G
    VG
    VG
    VG
    VG
    VG
    Humidity
    85%
    85%
    86%
    87%
    83%
    75%
    74%
    78%
    83%
    UV - - - 1 2 3 2 1 -
    Wind direction and speed (mph)
    14
    15
    15
    18
    19
    17
    15
    13
    Height of waves offshore (m)
    0.9
    Period of waves offshore (s)
    6
    Direction of waves offshore
    Sunday (7 September 2025)
    Time
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Light rain Light rain Light rain Light rain Cloudy Cloudy Partly cloudy night Partly cloudy night
    Chance of precipitation
    60%
    60%
    60%
    50%
    50%
    40%
    30%
    30%
    Temperature (°C)
    17°
    17°
    16°
    18°
    18°
    18°
    17°
    15°
    Feels like temperature (°C)
    15°
    15°
    14°
    16°
    16°
    16°
    15°
    14°
    Wind direction and speed (mph)
    SSE
    13
    S
    13
    S
    13
    SSW
    15
    SSW
    15
    SW
    14
    SSW
    12
    SSW
    10
    Wind gust (mph)
    24
    25
    26
    26
    23
    21
    16
    11
    Visibility (description)
    G
    G
    G
    G
    G
    VG
    VG
    G
    Humidity
    85%
    88%
    91%
    87%
    85%
    84%
    85%
    91%
    UV - - 1 2 3 2 1 -
    Wind direction and speed (mph)
    13
    Height of waves offshore (m)
    0.8
    Period of waves offshore (s)
    8
    Direction of waves offshore

    Tide times

    Monday 1 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 1 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 1 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 1 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 2 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 2 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 2 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 2 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 3 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 3 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 3 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 3 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 4 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 4 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 4 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 4 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 5 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 5 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 5 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 5 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 6 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 6 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 6 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 6 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 7 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 7 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 7 September

    Tide times and heights are from Holyhead tidal station which is 4.2 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 7 September

    Tide times and heights are from Holyhead tidal station which is 4.2 miles away. So times may be different at this beach. What does this mean?

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

    Porth Swtan / Church Bay 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:

    An unsettled start to Autumn.

    Today:

    A wet start to Monday with heavy band of organised showers. These turning most isolated through the morning and potentially turning heavy and thundery at times. Sunny spells in between but staying breezy, especially near coasts. Temperatures near average. Maximum temperature 18 °C.

    Tonight:

    Clear spells for most overnight with the odd isolated shower. Staying blustery but winds dying down by dawn where a risk of more persistent rain moves into the south. Minimum temperature 15 °C.

    Tuesday:

    Heavy rain and low cloud tracks eastwards across the south of the country, with blustery conditions through the Bristol Channel. Elsewhere winds a lot lighter than in previous days. Maximum temperature 19 °C.

    Outlook for Wednesday to Friday:

    Remaining unsettled throughout with further spells of rain and showers. The rain will be heavy at times, but some drier and sunnier interludes will develop. Temperatures around average.

    Updated:

    UK long range weather forecast

    More from the Met Office

    Take our short survey