Caswell Bay (Swansea) 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

Clear changing to partly cloudy by nighttime.
Beach safety today
Large, powerful waves
  • • only experts should take part in water activities

Tide: Next high tide (6.8m) at

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

    7 day forecast for Caswell Bay

    Today (11 March 2026)
    Time
    18:00
    19:00
    20:00
    21:00
    22:00
    23:00
    Weather symbols Clear night Clear night Partly cloudy night Partly cloudy night Partly cloudy night Overcast
    Chance of precipitation
    <5%
    <5%
    <5%
    <5%
    10%
    20%
    Temperature
    Feels like temperature (°C)
    Wind direction and speed
    W
    12
    WSW
    12
    WSW
    12
    WSW
    12
    WSW
    12
    SW
    13
    Wind gust (mph)
    28
    28
    26
    27
    28
    29
    Visibility
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    75%
    76%
    77%
    77%
    83%
    82%
    UV 1 - - - - -
    Wind direction and speed
    12
    12
    12
    12
    13
    Height of waves offshore (m)
    1.7
    1.7
    1.7
    1.6
    1.7
    Period of waves offshore (s)
    14
    14
    14
    14
    14
    Direction of waves offshore
    Thursday (12 March 2026)
    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 Overcast Overcast Overcast Light shower night Overcast Overcast Overcast Overcast Light rain Light rain Light rain Overcast Overcast Overcast Overcast Light rain Light rain Light rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain Heavy rain
    Chance of precipitation
    30%
    40%
    40%
    60%
    40%
    30%
    30%
    40%
    60%
    60%
    60%
    50%
    50%
    50%
    50%
    60%
    70%
    80%
    ≥95%
    ≥95%
    ≥95%
    ≥95%
    ≥95%
    ≥95%
    Temperature (°C)
    10°
    10°
    10°
    10°
    10°
    11°
    11°
    12°
    12°
    12°
    12°
    12°
    12°
    12°
    12°
    11°
    10°
    10°
    Feels like temperature (°C)
    Wind direction and speed (mph)
    SW
    14
    SW
    15
    SW
    15
    SSW
    16
    SW
    17
    SW
    17
    SSW
    18
    SSW
    20
    SSW
    21
    SSW
    23
    SSW
    24
    SSW
    24
    SW
    24
    SW
    24
    SW
    24
    SW
    24
    SW
    25
    SW
    25
    SW
    24
    SW
    23
    SW
    20
    WSW
    17
    WSW
    16
    WSW
    15
    Wind gust (mph)
    30
    32
    34
    36
    37
    38
    39
    41
    43
    44
    46
    47
    48
    49
    49
    49
    50
    50
    50
    48
    43
    36
    39
    39
    Visibility (description)
    VG
    G
    G
    G
    G
    G
    G
    M
    M
    M
    M
    M
    M
    P
    P
    M
    M
    M
    M
    P
    M
    M
    M
    M
    Humidity
    83%
    84%
    85%
    85%
    86%
    84%
    85%
    85%
    86%
    87%
    91%
    92%
    93%
    94%
    94%
    92%
    92%
    93%
    94%
    94%
    94%
    92%
    90%
    86%
    UV - - - - - - 1 1 1 1 1 1 1 1 1 1 1 1 1 - - - - -
    Wind direction and speed (mph)
    14
    15
    15
    16
    17
    17
    18
    20
    21
    23
    24
    24
    24
    24
    24
    24
    25
    25
    24
    23
    20
    17
    16
    15
    Height of waves offshore (m)
    1.7
    1.8
    1.8
    1.9
    2.0
    2.1
    2.2
    2.3
    2.4
    2.4
    2.5
    2.6
    2.7
    2.7
    2.8
    2.9
    3.0
    3.1
    3.0
    3.0
    3.1
    3.0
    2.7
    2.6
    Period of waves offshore (s)
    14
    14
    13
    13
    8
    8
    8
    8
    9
    9
    9
    9
    9
    9
    10
    10
    10
    10
    10
    10
    10
    10
    11
    11
    Direction of waves offshore
    Friday (13 March 2026)
    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 shower night Light shower night Light shower night Light shower night Light shower night Light shower day Light shower day Light shower day Sunny intervals Light shower day Sunny intervals Sunny intervals Light shower day Sunny intervals Sunny intervals Sunny intervals Light shower night Light shower night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night
    Chance of precipitation
    ≥95%
    ≥95%
    80%
    70%
    80%
    70%
    60%
    60%
    50%
    60%
    50%
    50%
    50%
    50%
    50%
    40%
    50%
    50%
    50%
    50%
    50%
    40%
    30%
    30%
    Temperature (°C)
    Feels like temperature (°C)
    Wind direction and speed (mph)
    W
    15
    W
    15
    W
    15
    W
    15
    W
    14
    W
    14
    W
    13
    W
    13
    W
    13
    W
    14
    WSW
    15
    WSW
    15
    WSW
    15
    WSW
    14
    WSW
    14
    WSW
    13
    W
    13
    W
    11
    W
    9
    WNW
    7
    WNW
    6
    WNW
    6
    WNW
    6
    WNW
    6
    Wind gust (mph)
    40
    40
    40
    40
    40
    39
    38
    36
    35
    36
    33
    34
    31
    31
    32
    30
    27
    28
    25
    23
    20
    17
    19
    18
    Visibility (description)
    G
    G
    G
    VG
    VG
    G
    VG
    VG
    VG
    VG
    VG
    VG
    G
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    84%
    82%
    77%
    73%
    75%
    76%
    75%
    74%
    73%
    65%
    63%
    61%
    58%
    58%
    58%
    59%
    62%
    61%
    68%
    75%
    79%
    84%
    85%
    84%
    UV - - - - - - 1 1 1 1 1 1 2 2 1 1 1 1 1 - - - - -
    Wind direction and speed (mph)
    15
    15
    15
    15
    14
    14
    13
    13
    13
    14
    15
    15
    15
    14
    14
    13
    13
    11
    9
    7
    6
    6
    6
    6
    Height of waves offshore (m)
    2.6
    2.6
    2.7
    2.6
    2.6
    2.6
    2.6
    2.5
    2.4
    2.3
    2.2
    2.1
    2.1
    2.0
    1.9
    1.9
    1.8
    1.7
    1.7
    1.6
    1.6
    1.5
    1.5
    1.4
    Period of waves offshore (s)
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    Direction of waves offshore
    Saturday (14 March 2026)
    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 Clear night Clear night Clear night Partly cloudy night Sunny intervals Sunny intervals Cloudy Cloudy Cloudy Light shower day Light shower day Light shower day Light shower day Light shower day Sunny intervals Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night
    Chance of precipitation
    30%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    20%
    30%
    40%
    40%
    50%
    60%
    60%
    60%
    60%
    50%
    40%
    40%
    40%
    40%
    30%
    30%
    Temperature (°C)
    Feels like temperature (°C)
    -1°
    Wind direction and speed (mph)
    WNW
    6
    WNW
    6
    NW
    6
    NW
    6
    NW
    6
    NW
    6
    NW
    6
    NW
    5
    WNW
    5
    W
    5
    W
    6
    WSW
    7
    WSW
    8
    WSW
    9
    WSW
    9
    WSW
    9
    W
    9
    WSW
    8
    W
    6
    W
    6
    W
    6
    W
    6
    W
    5
    WNW
    5
    Wind gust (mph)
    18
    18
    17
    16
    16
    16
    15
    15
    16
    16
    18
    19
    22
    22
    21
    21
    21
    20
    18
    17
    16
    16
    13
    15
    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
    85%
    86%
    88%
    88%
    90%
    90%
    91%
    91%
    85%
    77%
    69%
    66%
    65%
    69%
    71%
    70%
    73%
    75%
    81%
    84%
    85%
    86%
    88%
    91%
    UV - - - - - - 1 1 1 1 2 2 2 2 1 1 1 1 1 - - - - -
    Wind direction and speed (mph)
    6
    6
    6
    6
    6
    6
    6
    5
    5
    5
    6
    7
    8
    9
    9
    9
    9
    8
    6
    6
    6
    6
    5
    5
    Height of waves offshore (m)
    1.4
    1.5
    1.4
    1.4
    1.3
    1.3
    1.3
    1.2
    1.2
    1.1
    1.1
    1.1
    1.1
    1.0
    1.0
    1.0
    1.0
    1.0
    0.9
    0.9
    0.9
    0.9
    0.9
    0.8
    Period of waves offshore (s)
    11
    10
    10
    10
    10
    10
    10
    10
    11
    11
    12
    12
    12
    12
    12
    12
    11
    11
    11
    11
    11
    11
    11
    11
    Direction of waves offshore
    Sunday (15 March 2026)
    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 Cloudy Cloudy Overcast Light rain Light rain Light rain Light rain Light rain Light rain Light rain Light rain Cloudy Sunny intervals Sunny intervals Sunny intervals Partly cloudy night Light shower night Light shower night Light shower night Light shower night Partly cloudy night
    Chance of precipitation
    20%
    20%
    20%
    20%
    30%
    40%
    50%
    60%
    70%
    70%
    80%
    80%
    60%
    60%
    50%
    50%
    40%
    40%
    50%
    50%
    60%
    70%
    50%
    40%
    Temperature (°C)
    10°
    10°
    10°
    10°
    11°
    10°
    10°
    Feels like temperature (°C)
    Wind direction and speed (mph)
    W
    5
    W
    5
    W
    5
    W
    5
    SW
    5
    SW
    7
    SSW
    8
    SSW
    10
    SSW
    11
    SSW
    12
    SSW
    13
    SW
    13
    SW
    14
    WSW
    14
    WSW
    15
    WSW
    16
    WSW
    17
    W
    16
    W
    15
    W
    14
    W
    14
    W
    13
    WNW
    14
    WNW
    14
    Wind gust (mph)
    16
    16
    15
    15
    16
    17
    20
    22
    26
    28
    29
    30
    29
    31
    33
    38
    38
    36
    36
    38
    35
    36
    36
    35
    Visibility (description)
    G
    G
    G
    G
    G
    G
    M
    M
    M
    M
    M
    M
    M
    M
    M
    G
    G
    G
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    91%
    92%
    93%
    93%
    93%
    92%
    92%
    92%
    93%
    93%
    93%
    93%
    91%
    87%
    84%
    82%
    79%
    77%
    77%
    77%
    78%
    76%
    77%
    75%
    UV - - - - - - 1 1 1 1 1 1 1 1 1 1 1 1 1 - - - - -
    Wind direction and speed (mph)
    5
    5
    5
    5
    5
    7
    8
    10
    11
    12
    13
    13
    14
    14
    15
    16
    17
    16
    15
    14
    14
    13
    14
    14
    Height of waves offshore (m)
    0.8
    0.8
    0.8
    0.8
    0.8
    0.8
    0.8
    0.8
    0.8
    0.8
    0.9
    1.0
    1.1
    1.2
    1.3
    1.4
    1.4
    1.5
    1.5
    1.6
    1.6
    1.7
    1.8
    2.0
    Period of waves offshore (s)
    10
    10
    10
    9
    9
    9
    9
    9
    9
    9
    9
    9
    5
    6
    6
    6
    7
    7
    7
    7
    7
    8
    8
    8
    Direction of waves offshore
    Monday (16 March 2026)
    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 Sunny intervals Cloudy Overcast Drizzle Light rain Light rain
    Chance of precipitation
    50%
    40%
    20%
    20%
    30%
    50%
    60%
    70%
    Temperature (°C)
    10°
    10°
    Feels like temperature (°C)
    Wind direction and speed (mph)
    WNW
    13
    WNW
    12
    W
    11
    W
    13
    WSW
    14
    SW
    15
    SW
    14
    SSW
    14
    Wind gust (mph)
    34
    28
    26
    30
    31
    30
    30
    31
    Visibility (description)
    VG
    VG
    VG
    VG
    G
    G
    G
    M
    Humidity
    76%
    76%
    78%
    72%
    66%
    71%
    84%
    91%
    UV - - 1 1 2 1 1 -
    Wind direction and speed (mph)
    13
    12
    11
    13
    14
    15
    14
    14
    Height of waves offshore (m)
    2.1
    2.1
    1.9
    1.8
    1.6
    1.6
    1.7
    1.6
    Period of waves offshore (s)
    8
    9
    10
    10
    10
    9
    8
    8
    Direction of waves offshore
    Tuesday (17 March 2026)
    Time
    00:00
    03:00
    06:00
    09:00
    12:00
    15:00
    18:00
    21:00
    Weather symbols Light rain Light rain Light rain Light rain Cloudy Light rain Cloudy Cloudy
    Chance of precipitation
    70%
    70%
    70%
    60%
    50%
    50%
    40%
    30%
    Temperature (°C)
    10°
    10°
    10°
    10°
    12°
    12°
    10°
    10°
    Feels like temperature (°C)
    Wind direction and speed (mph)
    SSW
    16
    SSW
    16
    SSW
    16
    SSW
    16
    SSW
    17
    SSW
    15
    SSW
    12
    SSW
    11
    Wind gust (mph)
    32
    33
    33
    34
    34
    30
    24
    22
    Visibility (description)
    M
    M
    M
    M
    G
    G
    G
    G
    Humidity
    91%
    92%
    92%
    88%
    81%
    77%
    81%
    84%
    UV - - 1 1 2 1 1 -
    Wind direction and speed (mph)
    16
    Height of waves offshore (m)
    1.7
    Period of waves offshore (s)
    8
    Direction of waves offshore

    Tide times

    Wednesday 11 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 11 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 11 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 11 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 12 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 12 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 12 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 12 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 13 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 13 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 13 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 13 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 14 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 14 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 14 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 14 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 15 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 15 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 15 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 15 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 16 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 16 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 16 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 16 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 17 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 17 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 17 March

    Tide times and heights are from Mumbles tidal station which is 2.7 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 17 March

    Tide times and heights are from Mumbles tidal station which is 2.7 miles away. So times may be different at this beach. What does this mean?

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

    UK video forecast

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    Wales weather forecast

    Headline:

    Wet and windy on Thursday with severe gales in places.

    This Evening and Tonight:

    Mainly dry this evening with clear spells but isolated showers possible, chiefly in coastal regions. Becoming cloudy and windy overnight with gales developing in coastal and upland regions, locally severe in the north later. Showery rain for some. Remaining frost-free. Minimum temperature 5 °C.

    Thursday:

    Often wet and windy with the rain occasionally heavy and persistent, especially later. Gales are likely with severe gales possible in parts of North Wales. Mild but turning colder overnight. Maximum temperature 13 °C.

    Outlook for Friday to Sunday:

    Colder on Friday with sunny spells and showers, wintry in places. Showers on Saturday, locally heavy. Some rain possible on Sunday. Frosty nights at first and breezy at times.

    Updated:

    UK long range weather forecast

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