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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

Sunny intervals changing to partly cloudy by nighttime.
Beach safety today
Large, powerful waves and strong wind
  • • only experts should take part in water activities

Tide: Next high tide (9.1m) at

Sunrise iconSunrise:
Sunset iconSunset:
H UV
L Pollution

    7 day forecast for Caswell Bay

    Today (25 May 2025)
    Time
    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 Light rain Cloudy Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny day Sunny day Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Partly cloudy night Partly cloudy night Partly cloudy night
    Chance of precipitation
    30%
    50%
    20%
    10%
    <5%
    <5%
    10%
    20%
    20%
    20%
    10%
    10%
    10%
    20%
    10%
    10%
    <5%
    <5%
    <5%
    10%
    10%
    Temperature
    13°
    13°
    13°
    12°
    12°
    13°
    14°
    15°
    15°
    15°
    15°
    15°
    15°
    15°
    15°
    14°
    14°
    14°
    13°
    13°
    12°
    Feels like temperature (°C)
    10°
    10°
    10°
    10°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    10°
    10°
    10°
    Wind direction and speed
    WSW
    17
    W
    17
    WNW
    15
    WNW
    13
    WNW
    13
    WNW
    15
    WNW
    16
    W
    17
    W
    18
    W
    19
    W
    20
    W
    20
    WSW
    19
    WSW
    20
    WSW
    19
    W
    19
    W
    19
    W
    18
    W
    17
    W
    16
    W
    16
    Wind gust (mph)
    36
    35
    32
    31
    31
    33
    34
    37
    38
    39
    39
    39
    39
    38
    38
    38
    38
    37
    37
    37
    36
    Visibility
    G
    VG
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    Humidity
    88%
    89%
    87%
    84%
    80%
    75%
    68%
    61%
    57%
    56%
    57%
    56%
    57%
    58%
    62%
    63%
    65%
    69%
    73%
    73%
    73%
    UV - - 1 1 1 2 3 4 5 6 7 6 5 4 2 1 1 1 1 - -
    Wind direction and speed
    17
    17
    15
    13
    13
    15
    16
    17
    18
    19
    19
    20
    20
    20
    20
    19
    19
    18
    17
    16
    16
    Height of waves offshore (m)
    1.7
    1.6
    1.6
    1.5
    1.5
    1.5
    1.5
    1.4
    1.5
    1.6
    1.6
    1.6
    1.6
    1.6
    1.6
    1.7
    1.7
    1.8
    1.7
    1.7
    1.7
    Period of waves offshore (s)
    8
    8
    8
    8
    9
    9
    9
    9
    9
    9
    9
    9
    9
    9
    9
    10
    10
    9
    9
    9
    9
    Direction of waves offshore
    Monday (26 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 Cloudy Cloudy Overcast Overcast Light rain Light rain Light rain Light rain Light rain Light rain Light rain Heavy rain Heavy rain Heavy rain Light rain
    Chance of precipitation
    20%
    30%
    40%
    30%
    30%
    20%
    30%
    40%
    30%
    30%
    40%
    40%
    50%
    60%
    50%
    60%
    70%
    70%
    70%
    80%
    90%
    ≥95%
    90%
    80%
    Temperature (°C)
    12°
    12°
    11°
    11°
    11°
    11°
    11°
    11°
    13°
    13°
    14°
    14°
    14°
    14°
    14°
    14°
    14°
    14°
    14°
    14°
    14°
    13°
    13°
    13°
    Feels like temperature (°C)
    10°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    10°
    11°
    10°
    10°
    10°
    10°
    Wind direction and speed (mph)
    W
    16
    W
    14
    W
    13
    W
    13
    W
    12
    W
    11
    W
    11
    W
    12
    WSW
    13
    WSW
    15
    WSW
    15
    WSW
    15
    WSW
    16
    SW
    16
    SW
    17
    WSW
    17
    WSW
    17
    WSW
    18
    WSW
    18
    SW
    18
    SW
    19
    SW
    20
    SW
    21
    WSW
    22
    Wind gust (mph)
    35
    34
    32
    30
    28
    29
    27
    28
    28
    29
    30
    31
    33
    33
    34
    35
    36
    35
    35
    35
    36
    39
    41
    40
    Visibility (description)
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    VG
    M
    M
    M
    G
    Humidity
    74%
    74%
    74%
    74%
    74%
    77%
    77%
    75%
    72%
    69%
    69%
    73%
    75%
    78%
    81%
    80%
    84%
    87%
    86%
    88%
    88%
    92%
    93%
    93%
    UV - - - - - 1 1 1 1 2 1 2 2 3 4 3 2 1 1 1 1 1 - -
    Wind direction and speed (mph)
    16
    15
    14
    13
    12
    11
    11
    12
    13
    15
    15
    15
    16
    17
    17
    17
    18
    18
    18
    18
    19
    20
    21
    22
    Height of waves offshore (m)
    1.7
    1.8
    1.7
    1.6
    1.6
    1.5
    1.4
    1.3
    1.4
    1.3
    1.2
    1.2
    1.4
    1.5
    1.5
    1.5
    1.4
    1.4
    1.5
    1.6
    1.7
    1.8
    1.9
    2.0
    Period of waves offshore (s)
    9
    9
    9
    9
    10
    10
    10
    10
    10
    10
    10
    10
    10
    10
    10
    10
    10
    10
    7
    7
    7
    7
    8
    8
    Direction of waves offshore
    Tuesday (27 May 2025)
    Time
    00:00
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Light rain Light shower night Sunny intervals Cloudy Light rain Light rain Light rain Light rain Light rain
    Chance of precipitation
    70%
    50%
    20%
    10%
    60%
    80%
    80%
    80%
    80%
    Temperature (°C)
    13°
    13°
    12°
    12°
    14°
    14°
    14°
    15°
    14°
    Feels like temperature (°C)
    10°
    12°
    11°
    11°
    11°
    11°
    Wind direction and speed (mph)
    WSW
    21
    WSW
    20
    W
    17
    W
    11
    WSW
    12
    SW
    15
    SW
    18
    SW
    20
    SW
    21
    Wind gust (mph)
    40
    35
    32
    25
    25
    31
    39
    39
    40
    Visibility (description)
    G
    E
    E
    E
    E
    G
    G
    G
    VG
    Humidity
    92%
    92%
    89%
    85%
    76%
    93%
    96%
    94%
    95%
    UV - - - 1 3 2 1 1 -
    Wind direction and speed (mph)
    21
    20
    17
    12
    12
    15
    18
    20
    21
    Height of waves offshore (m)
    2.2
    2.3
    1.9
    1.6
    1.3
    1.4
    1.4
    1.7
    1.9
    Period of waves offshore (s)
    8
    8
    9
    9
    10
    10
    10
    6
    7
    Direction of waves offshore
    Wednesday (28 May 2025)
    Time
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Light rain Overcast Sunny intervals Sunny intervals Sunny intervals Cloudy Cloudy Overcast
    Chance of precipitation
    60%
    40%
    30%
    20%
    20%
    30%
    40%
    40%
    Temperature (°C)
    14°
    13°
    13°
    15°
    15°
    15°
    14°
    13°
    Feels like temperature (°C)
    10°
    10°
    10°
    12°
    12°
    12°
    12°
    11°
    Wind direction and speed (mph)
    WSW
    20
    WSW
    18
    WSW
    17
    WSW
    17
    WSW
    17
    WSW
    16
    WSW
    14
    WSW
    11
    Wind gust (mph)
    35
    30
    34
    30
    27
    24
    23
    20
    Visibility (description)
    VG
    VG
    VG
    E
    E
    E
    E
    VG
    Humidity
    95%
    92%
    88%
    78%
    73%
    75%
    83%
    90%
    UV - - 1 3 5 3 1 -
    Wind direction and speed (mph)
    20
    18
    17
    17
    17
    16
    14
    11
    Height of waves offshore (m)
    2.2
    2.0
    1.9
    2.1
    2.2
    2.3
    2.2
    2.0
    Period of waves offshore (s)
    8
    9
    9
    9
    9
    9
    9
    8
    Direction of waves offshore
    Thursday (29 May 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 Sunny intervals Sunny intervals Sunny intervals Sunny intervals Partly cloudy night
    Chance of precipitation
    50%
    60%
    50%
    40%
    30%
    20%
    20%
    20%
    Temperature (°C)
    13°
    12°
    12°
    15°
    16°
    16°
    15°
    14°
    Feels like temperature (°C)
    11°
    10°
    10°
    12°
    13°
    13°
    13°
    12°
    Wind direction and speed (mph)
    SW
    11
    WSW
    13
    SW
    13
    WSW
    15
    WSW
    16
    WSW
    15
    WSW
    13
    WSW
    10
    Wind gust (mph)
    22
    23
    26
    30
    32
    29
    24
    18
    Visibility (description)
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    92%
    93%
    93%
    91%
    78%
    74%
    78%
    85%
    UV - - 1 3 5 3 1 -
    Wind direction and speed (mph)
    11
    13
    13
    15
    16
    15
    13
    10
    Height of waves offshore (m)
    1.6
    1.3
    1.1
    0.9
    0.8
    0.8
    0.8
    1.1
    Period of waves offshore (s)
    8
    11
    11
    11
    11
    11
    10
    9
    Direction of waves offshore
    Friday (30 May 2025)
    Time
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Cloudy Cloudy Cloudy Sunny intervals Sunny intervals Sunny intervals Sunny intervals Cloudy
    Chance of precipitation
    30%
    30%
    30%
    30%
    30%
    20%
    20%
    20%
    Temperature (°C)
    13°
    12°
    12°
    15°
    16°
    17°
    16°
    14°
    Feels like temperature (°C)
    11°
    10°
    10°
    13°
    14°
    14°
    13°
    12°
    Wind direction and speed (mph)
    W
    9
    WSW
    10
    WSW
    10
    WSW
    13
    WSW
    13
    WSW
    13
    WSW
    12
    WSW
    8
    Wind gust (mph)
    15
    14
    21
    25
    26
    25
    20
    15
    Visibility (description)
    VG
    G
    G
    G
    VG
    VG
    VG
    VG
    Humidity
    89%
    92%
    89%
    78%
    70%
    68%
    73%
    79%
    UV - - 1 3 5 3 1 -
    Wind direction and speed (mph)
    9
    10
    10
    13
    13
    13
    12
    8
    Height of waves offshore (m)
    1.3
    1.3
    1.4
    1.5
    1.8
    Period of waves offshore (s)
    6
    7
    8
    8
    7
    Direction of waves offshore
    Saturday (31 May 2025)
    Time
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Cloudy Cloudy Cloudy Sunny intervals Sunny intervals Sunny intervals Sunny intervals Partly cloudy night
    Chance of precipitation
    30%
    30%
    30%
    30%
    20%
    20%
    20%
    20%
    Temperature (°C)
    13°
    12°
    12°
    15°
    17°
    17°
    16°
    14°
    Feels like temperature (°C)
    11°
    11°
    11°
    13°
    14°
    14°
    14°
    13°
    Wind direction and speed (mph)
    WSW
    8
    WSW
    8
    SW
    8
    WSW
    11
    WSW
    12
    WSW
    13
    WSW
    12
    WSW
    8
    Wind gust (mph)
    15
    15
    20
    22
    23
    23
    19
    13
    Visibility (description)
    G
    G
    G
    VG
    VG
    VG
    VG
    VG
    Humidity
    87%
    88%
    87%
    74%
    67%
    66%
    71%
    84%
    UV - - 1 4 6 3 1 -
    Wind direction and speed (mph)
    8
    Height of waves offshore (m)
    Period of waves offshore (s)
    Direction of waves offshore

    Tide times

    Sunday 25 May

    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 25 May

    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 25 May

    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 25 May

    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 26 May

    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 26 May

    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 26 May

    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 26 May

    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 27 May

    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 27 May

    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 27 May

    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 27 May

    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 28 May

    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 28 May

    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 28 May

    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 28 May

    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 29 May

    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 29 May

    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 29 May

    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 29 May

    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 30 May

    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 30 May

    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 30 May

    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 30 May

    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 31 May

    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 31 May

    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 31 May

    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 31 May

    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.

    Caswell Bay weather map

    View the weather with our interactive map

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    Wales weather forecast

    Headline:

    Rain moves eastwards with scattered showers to follow.

    This Evening and Tonight:

    A band of persistent rain arrives from the west, with heavy outbreaks at times. It will be increasingly windy, with the rain turning showery with some clear spells by dawn, but remaining rather mild overnight. Minimum temperature 14 °C.

    Sunday:

    Rather cloudy at first but turning brighter into the afternoon with a few scattered showers, these perhaps heavy at times. Windier and slightly cooler than Saturday, especially along the coasts. Maximum temperature 16 °C.

    Outlook for Monday to Wednesday:

    Remaining unsettled with a mixture of sunshine and showers by day and periods of more prolonged rain overnight. Remaining breezy, especially in the showers. Temperatures near or slightly below average.

    Updated:

    UK long range weather forecast

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