Portland Harbour - Castle Cove (Beach) (Dorset) 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

Cloudy changing to sunny intervals by late morning.
Beach safety today
Caution: strong winds may affect your paddling
  • • paddleboarding not recommended for beginners/intermediate
  • • experienced paddlers should use caution

Tide: Next high tide (3.4m) at

Sunrise iconSunrise:
Sunset iconSunset:
VH UV
L Pollution

    7 day forecast for Portland Harbour - Castle Cove (Beach)

    Today (19 July 2025)
    Time
    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 Partly cloudy night Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny day Sunny day Sunny day Sunny intervals Sunny intervals Cloudy Cloudy Cloudy Light rain Light rain
    Chance of precipitation
    10%
    20%
    30%
    40%
    40%
    50%
    40%
    30%
    20%
    10%
    10%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    10%
    10%
    20%
    40%
    60%
    60%
    Temperature
    17°
    17°
    17°
    17°
    16°
    16°
    17°
    17°
    18°
    19°
    19°
    20°
    20°
    20°
    20°
    20°
    19°
    19°
    18°
    18°
    18°
    17°
    17°
    Feels like temperature (°C)
    17°
    17°
    17°
    17°
    17°
    16°
    17°
    17°
    18°
    18°
    18°
    18°
    18°
    18°
    17°
    18°
    18°
    17°
    17°
    17°
    17°
    16°
    16°
    Wind direction and speed
    N
    4
    NNW
    4
    N
    4
    N
    4
    N
    4
    NNW
    3
    NW
    3
    WNW
    4
    W
    5
    W
    6
    WSW
    8
    WSW
    10
    SW
    11
    SW
    12
    SW
    13
    SSW
    13
    SW
    11
    SSW
    11
    SSW
    10
    S
    10
    S
    9
    SSE
    9
    SSE
    11
    Wind gust (mph)
    7
    7
    7
    7
    7
    6
    8
    10
    10
    11
    14
    16
    20
    21
    22
    21
    19
    19
    18
    17
    17
    19
    22
    Visibility
    VG
    VG
    VG
    VG
    VG
    G
    VG
    VG
    VG
    VG
    VG
    E
    E
    E
    E
    E
    E
    E
    E
    VG
    VG
    VG
    VG
    Humidity
    80%
    81%
    84%
    85%
    86%
    87%
    86%
    83%
    78%
    72%
    66%
    62%
    63%
    64%
    65%
    67%
    71%
    73%
    76%
    79%
    80%
    82%
    83%
    UV - - - - 1 1 1 1 2 4 6 7 8 7 6 4 2 1 1 1 1 - -
    Wind direction and speed
    4
    4
    4
    4
    4
    4
    3
    4
    5
    7
    9
    10
    11
    12
    13
    13
    12
    11
    10
    10
    9
    10
    11
    Height of waves offshore (m)
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.0
    0.1
    0.1
    0.1
    0.1
    0.1
    0.1
    0.1
    0.1
    0.3
    Period of waves offshore (s)
    8
    6
    6
    9
    9
    9
    4
    4
    4
    4
    3
    8
    2
    2
    2
    2
    3
    3
    3
    3
    3
    3
    3
    Direction of waves offshore
    Sunday (20 July 2025)
    Time
    00:00
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Light rain Heavy rain Light shower day Sunny intervals Sunny intervals Sunny intervals Sunny intervals Light shower day Light shower night
    Chance of precipitation
    70%
    90%
    80%
    40%
    30%
    40%
    40%
    50%
    70%
    Temperature (°C)
    17°
    17°
    16°
    17°
    18°
    19°
    19°
    18°
    17°
    Feels like temperature (°C)
    15°
    15°
    14°
    14°
    15°
    15°
    15°
    15°
    15°
    Wind direction and speed (mph)
    SE
    12
    SE
    14
    SE
    18
    S
    17
    S
    16
    SSW
    17
    S
    17
    S
    15
    SSE
    12
    Wind gust (mph)
    24
    32
    34
    29
    30
    31
    27
    22
    18
    Visibility (description)
    VG
    VG
    G
    E
    E
    E
    E
    E
    VG
    Humidity
    88%
    90%
    93%
    90%
    75%
    67%
    67%
    74%
    79%
    UV - - - 1 5 8 4 1 -
    Wind direction and speed (mph)
    12
    14
    18
    17
    16
    17
    17
    15
    12
    Height of waves offshore (m)
    0.4
    0.4
    0.7
    0.8
    0.7
    0.6
    0.4
    0.4
    0.4
    Period of waves offshore (s)
    3
    4
    4
    5
    6
    6
    5
    5
    4
    Direction of waves offshore
    Monday (21 July 2025)
    Time
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Light shower night Light shower day Sunny intervals Light shower day Light shower day Sunny intervals Sunny intervals Partly cloudy night
    Chance of precipitation
    70%
    60%
    50%
    60%
    50%
    40%
    20%
    10%
    Temperature (°C)
    16°
    15°
    16°
    19°
    21°
    21°
    20°
    18°
    Feels like temperature (°C)
    15°
    15°
    15°
    17°
    18°
    17°
    17°
    15°
    Wind direction and speed (mph)
    SE
    9
    NE
    6
    NNW
    7
    NW
    10
    W
    14
    WSW
    17
    W
    17
    W
    14
    Wind gust (mph)
    15
    12
    16
    22
    28
    30
    27
    25
    Visibility (description)
    VG
    VG
    VG
    VG
    E
    E
    E
    VG
    Humidity
    86%
    91%
    86%
    68%
    58%
    62%
    66%
    79%
    UV - - 1 5 7 4 1 -
    Wind direction and speed (mph)
    9
    6
    7
    10
    14
    17
    17
    14
    Height of waves offshore (m)
    0.3
    0.3
    0.3
    0.5
    0.5
    0.5
    0.5
    0.4
    Period of waves offshore (s)
    4
    4
    5
    7
    6
    5
    4
    5
    Direction of waves offshore
    Tuesday (22 July 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 Cloudy Cloudy Light shower day Sunny intervals Partly cloudy night
    Chance of precipitation
    20%
    10%
    10%
    40%
    50%
    50%
    30%
    20%
    Temperature (°C)
    17°
    17°
    17°
    18°
    19°
    19°
    18°
    17°
    Feels like temperature (°C)
    15°
    15°
    15°
    16°
    17°
    17°
    17°
    16°
    Wind direction and speed (mph)
    W
    14
    W
    12
    W
    11
    W
    12
    SW
    13
    SW
    13
    WSW
    11
    WNW
    9
    Wind gust (mph)
    24
    21
    21
    22
    22
    19
    17
    13
    Visibility (description)
    VG
    VG
    VG
    E
    E
    E
    E
    VG
    Humidity
    85%
    85%
    81%
    71%
    66%
    71%
    75%
    81%
    UV - - 1 4 5 4 1 -
    Wind direction and speed (mph)
    14
    12
    11
    12
    13
    13
    11
    9
    Height of waves offshore (m)
    0.5
    0.5
    0.4
    0.3
    0.3
    0.3
    0.2
    0.2
    Period of waves offshore (s)
    6
    5
    5
    4
    3
    4
    5
    5
    Direction of waves offshore
    Wednesday (23 July 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
    20%
    20%
    30%
    40%
    30%
    30%
    10%
    10%
    Temperature (°C)
    16°
    15°
    16°
    18°
    20°
    21°
    20°
    17°
    Feels like temperature (°C)
    15°
    14°
    15°
    17°
    18°
    19°
    18°
    16°
    Wind direction and speed (mph)
    WNW
    7
    WNW
    7
    WNW
    7
    W
    10
    WSW
    11
    W
    12
    WNW
    11
    WNW
    7
    Wind gust (mph)
    14
    12
    16
    19
    20
    18
    15
    10
    Visibility (description)
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    84%
    88%
    88%
    74%
    65%
    62%
    70%
    84%
    UV - - 1 5 6 4 1 -
    Wind direction and speed (mph)
    7
    7
    7
    10
    11
    12
    11
    7
    Height of waves offshore (m)
    0.2
    0.2
    0.2
    0.2
    0.1
    0.3
    0.3
    0.2
    Period of waves offshore (s)
    5
    3
    2
    2
    7
    4
    2
    4
    Direction of waves offshore
    Thursday (24 July 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 day Sunny day Clear night
    Chance of precipitation
    10%
    10%
    20%
    20%
    20%
    20%
    <5%
    <5%
    Temperature (°C)
    16°
    15°
    16°
    20°
    22°
    23°
    22°
    18°
    Feels like temperature (°C)
    15°
    14°
    16°
    19°
    21°
    22°
    21°
    18°
    Wind direction and speed (mph)
    WNW
    7
    WNW
    5
    NW
    5
    NW
    8
    W
    8
    W
    9
    W
    9
    WNW
    6
    Wind gust (mph)
    9
    9
    12
    14
    15
    14
    11
    10
    Visibility (description)
    G
    G
    G
    VG
    G
    VG
    VG
    VG
    Humidity
    92%
    95%
    92%
    73%
    60%
    58%
    63%
    84%
    UV - - 1 5 8 4 1 -
    Wind direction and speed (mph)
    7
    Height of waves offshore (m)
    Period of waves offshore (s)
    Direction of waves offshore
    Friday (25 July 2025)
    Time
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Clear night Partly cloudy night Sunny intervals Sunny intervals Sunny intervals Sunny day Sunny day Clear night
    Chance of precipitation
    <5%
    10%
    10%
    20%
    20%
    10%
    <5%
    <5%
    Temperature (°C)
    16°
    16°
    17°
    21°
    23°
    23°
    22°
    18°
    Feels like temperature (°C)
    16°
    15°
    16°
    21°
    22°
    22°
    21°
    18°
    Wind direction and speed (mph)
    NW
    6
    WNW
    5
    WNW
    5
    WNW
    7
    W
    9
    W
    9
    WNW
    10
    WNW
    7
    Wind gust (mph)
    8
    8
    10
    15
    17
    17
    15
    13
    Visibility (description)
    G
    G
    G
    VG
    G
    VG
    VG
    VG
    Humidity
    91%
    93%
    92%
    76%
    65%
    60%
    64%
    82%
    UV - - 1 5 7 4 1 -
    Wind direction and speed (mph)
    Height of waves offshore (m)
    Period of waves offshore (s)
    Direction of waves offshore

    Tide times

    Saturday 19 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 19 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 19 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 19 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 20 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 20 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 20 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 20 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 21 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 21 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 21 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 21 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 22 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 22 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 22 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 22 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 23 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 23 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 23 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 23 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 24 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 24 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 24 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 24 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 25 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 25 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 25 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 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 25 July

    Tide times and heights are from Chesil Cove tidal station which is 2.1 miles away. So times may be different at this beach. What does this mean?

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

    Portland Harbour - Castle Cove (Beach) weather map

    View the weather with our interactive map

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    WARNING
    Flood alerts icon
    Flood alerts in force for England
    Flood alerts in force for England

    South West England weather forecast

    Headline:

    Some late sunshine then showers arriving overnight.

    This Evening and Tonight:

    Some late sunshine for many before skies turn cloudier through the night with sea fog developing along the south coast. Mainly dry but feeling warm and muggy for all. Minimum temperature 13 °C.

    Saturday:

    A mixture of sunshine and showers, these heaviest and carrying the risk of thunderstorms and hail in the east. Sunny spells further west, before rain arrives in the southwest later. Maximum temperature 23 °C.

    Outlook for Sunday to Tuesday:

    Further showers are expected on Sunday with heavy, thundery downpours. Drier and brighter from Monday although a few heavy showers are still possible. Feeling warm in sunny spells.

    Updated:

    UK long range weather forecast

    More from the Met Office