Cemlyn (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

Sunny changing to partly cloudy by nighttime.
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 (1.9m) at

Sunrise iconSunrise:
Sunset iconSunset:
H UV
L Pollution

    8 day forecast for Cemlyn (Beach)

    Today (19 May 2025)
    Time
    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 Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Sunny intervals Sunny intervals Sunny intervals Sunny intervals Partly cloudy night Partly cloudy night Partly cloudy night
    Chance of precipitation
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    Temperature
    13°
    14°
    14°
    14°
    14°
    15°
    15°
    14°
    14°
    13°
    13°
    11°
    10°
    10°
    Feels like temperature (°C)
    11°
    11°
    11°
    11°
    12°
    12°
    12°
    12°
    12°
    11°
    11°
    10°
    Wind direction and speed
    ENE
    12
    ENE
    13
    ENE
    14
    NE
    14
    NE
    13
    NE
    12
    NE
    12
    NE
    11
    NNE
    11
    NE
    9
    NE
    8
    NE
    6
    ENE
    5
    ENE
    5
    Wind gust (mph)
    17
    17
    19
    18
    17
    17
    18
    17
    17
    15
    13
    11
    10
    9
    Visibility
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    57%
    56%
    55%
    56%
    55%
    55%
    57%
    62%
    64%
    68%
    73%
    82%
    86%
    87%
    UV 4 5 6 6 6 5 3 2 1 1 1 1 - -
    Wind direction and speed
    12
    13
    14
    14
    13
    13
    12
    12
    11
    9
    8
    6
    5
    5
    Height of waves offshore (m)
    0.5
    0.5
    0.6
    0.6
    0.6
    0.5
    0.4
    0.3
    0.3
    0.2
    0.3
    0.3
    0.3
    0.3
    Period of waves offshore (s)
    4
    4
    4
    4
    4
    4
    4
    4
    3
    3
    3
    3
    3
    3
    Direction of waves offshore
    Tuesday (20 May 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 Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny day Sunny intervals Sunny day Sunny day Sunny day Sunny intervals Sunny intervals Sunny intervals Partly cloudy night Partly cloudy night Partly cloudy night
    Chance of precipitation
    <5%
    10%
    10%
    10%
    <5%
    10%
    10%
    10%
    10%
    10%
    10%
    20%
    20%
    20%
    20%
    10%
    10%
    10%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    Temperature (°C)
    11°
    13°
    14°
    15°
    16°
    16°
    16°
    16°
    16°
    16°
    16°
    15°
    15°
    14°
    12°
    10°
    Feels like temperature (°C)
    11°
    13°
    14°
    14°
    14°
    14°
    14°
    14°
    15°
    15°
    15°
    14°
    14°
    13°
    11°
    10°
    Wind direction and speed (mph)
    ENE
    5
    ENE
    5
    E
    4
    E
    4
    E
    4
    ESE
    4
    ESE
    4
    ESE
    3
    ENE
    4
    NNE
    5
    N
    6
    N
    7
    N
    8
    NNE
    8
    NNE
    8
    NNE
    8
    N
    7
    N
    7
    N
    6
    NNW
    5
    NW
    5
    WNW
    4
    W
    3
    SSW
    3
    Wind gust (mph)
    9
    8
    9
    9
    9
    8
    7
    7
    9
    8
    7
    8
    8
    8
    8
    8
    8
    8
    8
    8
    8
    7
    5
    4
    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
    90%
    92%
    92%
    92%
    91%
    89%
    88%
    78%
    72%
    65%
    60%
    57%
    57%
    57%
    57%
    56%
    55%
    56%
    57%
    61%
    69%
    84%
    92%
    93%
    UV - - - - - 1 1 1 2 3 4 5 6 6 6 5 3 2 1 1 1 1 - -
    Wind direction and speed (mph)
    5
    5
    4
    4
    4
    4
    4
    3
    4
    5
    6
    7
    8
    8
    8
    8
    7
    7
    6
    5
    5
    4
    3
    3
    Height of waves offshore (m)
    0.3
    0.3
    0.3
    0.2
    0.2
    0.2
    0.2
    0.2
    0.2
    0.2
    0.2
    0.2
    0.2
    0.2
    0.2
    0.2
    0.2
    0.1
    0.1
    0.1
    0.1
    0.1
    0.1
    0.1
    Period of waves offshore (s)
    3
    3
    3
    3
    3
    3
    9
    3
    3
    3
    4
    3
    3
    3
    3
    3
    3
    11
    11
    8
    11
    11
    11
    11
    Direction of waves offshore
    Wednesday (21 May 2025)
    Time
    00:00
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Partly cloudy night Partly cloudy night Sunny intervals Sunny intervals Sunny day Sunny day Sunny day Sunny day Clear night
    Chance of precipitation
    <5%
    20%
    20%
    10%
    10%
    10%
    10%
    10%
    10%
    Temperature (°C)
    11°
    14°
    15°
    15°
    14°
    10°
    Feels like temperature (°C)
    10°
    12°
    13°
    13°
    13°
    Wind direction and speed (mph)
    SSW
    3
    SW
    3
    SSW
    3
    NNW
    4
    N
    7
    NNE
    10
    N
    9
    NNW
    8
    NNW
    6
    Wind gust (mph)
    4
    6
    6
    7
    13
    14
    13
    14
    16
    Visibility (description)
    VG
    VG
    G
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    93%
    92%
    93%
    87%
    73%
    65%
    60%
    65%
    87%
    UV - - - 1 4 6 4 1 -
    Wind direction and speed (mph)
    3
    3
    3
    4
    7
    10
    9
    8
    6
    Height of waves offshore (m)
    0.1
    0.1
    0.1
    0.1
    0.2
    0.3
    0.1
    0.1
    0.2
    Period of waves offshore (s)
    11
    11
    11
    10
    2
    3
    4
    2
    3
    Direction of waves offshore
    Thursday (22 May 2025)
    Time
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Clear night Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Clear night
    Chance of precipitation
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    Temperature (°C)
    10°
    12°
    13°
    14°
    13°
    Feels like temperature (°C)
    10°
    11°
    11°
    11°
    Wind direction and speed (mph)
    NNE
    8
    NE
    10
    NE
    10
    NNE
    14
    NNE
    12
    N
    11
    NNW
    11
    N
    9
    Wind gust (mph)
    14
    16
    21
    22
    18
    13
    13
    13
    Visibility (description)
    VG
    VG
    VG
    E
    E
    E
    E
    E
    Humidity
    84%
    83%
    73%
    58%
    47%
    43%
    50%
    75%
    UV - - 1 4 6 4 1 -
    Wind direction and speed (mph)
    7
    10
    11
    13
    13
    11
    11
    10
    Height of waves offshore (m)
    0.3
    0.4
    0.7
    0.7
    0.8
    0.6
    0.4
    0.3
    Period of waves offshore (s)
    3
    3
    4
    5
    5
    5
    4
    4
    Direction of waves offshore
    Friday (23 May 2025)
    Time
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Clear night Sunny day Sunny day Sunny day Sunny day Sunny day Sunny intervals Cloudy
    Chance of precipitation
    10%
    10%
    10%
    10%
    10%
    10%
    20%
    20%
    Temperature (°C)
    10°
    13°
    14°
    15°
    14°
    10°
    Feels like temperature (°C)
    11°
    12°
    13°
    12°
    Wind direction and speed (mph)
    NNW
    9
    SW
    8
    W
    8
    NW
    10
    NW
    10
    WNW
    10
    WSW
    9
    SSW
    8
    Wind gust (mph)
    13
    12
    13
    14
    14
    14
    12
    11
    Visibility (description)
    VG
    VG
    VG
    E
    E
    E
    VG
    VG
    Humidity
    82%
    83%
    68%
    55%
    54%
    53%
    57%
    86%
    UV - - 1 4 6 4 1 -
    Wind direction and speed (mph)
    10
    8
    8
    10
    11
    10
    10
    8
    Height of waves offshore (m)
    0.3
    0.2
    0.2
    0.1
    0.1
    0.1
    0.1
    0.3
    Period of waves offshore (s)
    3
    3
    3
    3
    3
    3
    3
    3
    Direction of waves offshore
    Saturday (24 May 2025)
    Time
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Cloudy Cloudy Light rain Cloudy Light rain Light rain Cloudy Cloudy
    Chance of precipitation
    30%
    50%
    50%
    50%
    50%
    50%
    50%
    50%
    Temperature (°C)
    10°
    11°
    12°
    14°
    16°
    15°
    15°
    13°
    Feels like temperature (°C)
    10°
    12°
    14°
    13°
    12°
    11°
    Wind direction and speed (mph)
    SSW
    9
    SSW
    8
    SSW
    9
    SW
    12
    SW
    13
    SW
    13
    SW
    14
    SW
    11
    Wind gust (mph)
    11
    14
    20
    23
    24
    24
    23
    21
    Visibility (description)
    VG
    G
    G
    G
    G
    G
    G
    G
    Humidity
    91%
    93%
    91%
    90%
    82%
    86%
    89%
    92%
    UV - - 1 2 4 3 1 -
    Wind direction and speed (mph)
    9
    8
    9
    12
    13
    13
    14
    11
    Height of waves offshore (m)
    0.4
    0.3
    0.2
    0.3
    Period of waves offshore (s)
    5
    5
    4
    3
    Direction of waves offshore
    Sunday (25 May 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%
    50%
    40%
    30%
    30%
    20%
    10%
    20%
    Temperature (°C)
    12°
    12°
    11°
    13°
    14°
    15°
    14°
    12°
    Feels like temperature (°C)
    11°
    10°
    11°
    12°
    12°
    12°
    10°
    Wind direction and speed (mph)
    SW
    11
    SW
    11
    WSW
    11
    WSW
    14
    WSW
    14
    WSW
    15
    WSW
    13
    WSW
    9
    Wind gust (mph)
    20
    21
    25
    26
    26
    25
    21
    16
    Visibility (description)
    G
    G
    G
    VG
    VG
    VG
    VG
    VG
    Humidity
    92%
    92%
    91%
    78%
    68%
    62%
    66%
    78%
    UV - - 1 4 5 4 1 -
    Wind direction and speed (mph)
    11
    Height of waves offshore (m)
    Period of waves offshore (s)
    Direction of waves offshore
    Monday (26 May 2025)
    Time
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Partly cloudy night Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Partly cloudy night
    Chance of precipitation
    10%
    20%
    30%
    30%
    40%
    30%
    20%
    30%
    Temperature (°C)
    11°
    10°
    11°
    13°
    14°
    14°
    14°
    12°
    Feels like temperature (°C)
    10°
    11°
    12°
    11°
    10°
    Wind direction and speed (mph)
    W
    8
    WSW
    8
    WSW
    10
    SW
    13
    SW
    14
    SW
    14
    SW
    13
    SW
    9
    Wind gust (mph)
    15
    15
    22
    26
    28
    26
    21
    16
    Visibility (description)
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    84%
    86%
    81%
    73%
    65%
    64%
    69%
    84%
    UV - - 1 3 6 4 1 -
    Wind direction and speed (mph)
    Height of waves offshore (m)
    Period of waves offshore (s)
    Direction of waves offshore

    Tide times

    Monday 19 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 19 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 19 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 19 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 20 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 20 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 20 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 20 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 21 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 21 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 21 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 21 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 22 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 22 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 22 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 22 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 23 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 23 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 23 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 23 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 24 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 24 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 24 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 24 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 25 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 25 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 25 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 25 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 26 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 26 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 26 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 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 26 May

    Tide times and heights are from Cemaes Bay tidal station which is 2.5 miles away. So times may be different at this beach. What does this mean?

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

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    Wales weather forecast

    Headline:

    Scattered showers and sunny spells this week.

    Today:

    Rather cloudy overall, though some bright or sunny spells emerging. Scattered showers developing, perhaps heavy and thundery in places with gusty winds. Feeling less warm than the weekend. Maximum temperature 19 °C.

    Tonight:

    Showers becoming more isolated, though potentially lingering in the north until the end of the night. Largely clear skies developing in the south. Locally chilly in rural spots. Minimum temperature 4 °C.

    Tuesday:

    A fine start with some bright spells. Showers again bubbling up into the afternoon, possibly heavy and thundery. Feeling pleasant in any intermediary sunshine. Maximum temperature 20 °C.

    Outlook for Wednesday to Friday:

    Continuing chance of showers on Wednesday, again potentially heavy and thundery. Drier on Thursday and Friday with bright or sunny spells. Still locally chilly overnight under clear skies.

    Updated:

    UK long range weather forecast

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