Grandes Rocques (Beach) (Guernsey) 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

Overcast changing to light rain by early evening.
Beach safety today
Large, powerful waves and strong wind
  • • only experts should take part in water activities

Tide: Next high tide (8.3m) at

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

    7 day forecast for Grandes Rocques (Beach)

    Today (20 December 2025)
    Time
    16:00
    17:00
    18:00
    19:00
    20:00
    21:00
    22:00
    23:00
    Weather symbols Overcast Overcast Light rain Light rain Light rain Partly cloudy night Partly cloudy night Partly cloudy night
    Chance of precipitation
    30%
    50%
    50%
    60%
    80%
    40%
    10%
    <5%
    Temperature
    10°
    10°
    10°
    10°
    10°
    10°
    10°
    10°
    Feels like temperature (°C)
    Wind direction and speed
    SSE
    24
    SSE
    25
    SSE
    25
    SSE
    24
    SSE
    22
    S
    19
    S
    17
    S
    14
    Wind gust (mph)
    38
    39
    37
    36
    33
    30
    27
    24
    Visibility
    E
    E
    E
    E
    E
    E
    E
    E
    Humidity
    84%
    85%
    88%
    89%
    87%
    85%
    81%
    78%
    UV 1 - - - - - - -
    Wind direction and speed
    25
    25
    25
    24
    22
    20
    17
    14
    Height of waves offshore (m)
    1.5
    1.6
    1.7
    1.8
    1.9
    1.9
    1.9
    1.8
    Period of waves offshore (s)
    13
    13
    13
    13
    13
    12
    12
    12
    Direction of waves offshore
    Sunday (21 December 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 rain Light shower day Cloudy Cloudy Overcast Overcast Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Overcast Overcast Overcast Overcast Overcast
    Chance of precipitation
    <5%
    <5%
    <5%
    <5%
    <5%
    20%
    40%
    60%
    50%
    30%
    30%
    40%
    40%
    30%
    30%
    30%
    30%
    20%
    30%
    40%
    40%
    50%
    40%
    40%
    Temperature (°C)
    10°
    10°
    10°
    10°
    10°
    10°
    10°
    10°
    10°
    10°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    Feels like temperature (°C)
    Wind direction and speed (mph)
    S
    12
    S
    11
    S
    9
    SSE
    8
    SE
    7
    SE
    8
    SE
    10
    SE
    11
    ESE
    11
    ESE
    12
    ESE
    12
    ESE
    13
    ESE
    14
    ESE
    14
    ESE
    14
    E
    14
    E
    13
    E
    13
    E
    13
    E
    12
    E
    11
    E
    11
    E
    11
    E
    11
    Wind gust (mph)
    21
    19
    17
    15
    17
    19
    21
    21
    21
    20
    21
    21
    21
    21
    20
    20
    20
    20
    20
    17
    16
    15
    15
    15
    Visibility (description)
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    VG
    VG
    VG
    VG
    VG
    E
    Humidity
    73%
    71%
    72%
    73%
    75%
    80%
    83%
    85%
    87%
    87%
    88%
    88%
    88%
    87%
    85%
    85%
    85%
    86%
    86%
    87%
    88%
    89%
    90%
    89%
    UV - - - - - - - - 1 1 1 1 1 1 1 1 1 - - - - - - -
    Wind direction and speed (mph)
    12
    10
    9
    8
    8
    9
    10
    11
    12
    12
    13
    13
    13
    13
    14
    13
    12
    12
    12
    11
    10
    10
    10
    10
    Height of waves offshore (m)
    1.8
    1.8
    1.8
    1.8
    1.9
    2.0
    2.1
    2.1
    2.1
    2.1
    2.1
    2.1
    2.1
    2.1
    2.1
    2.2
    2.3
    2.3
    2.3
    2.3
    2.2
    2.1
    2.0
    1.9
    Period of waves offshore (s)
    12
    12
    12
    12
    12
    12
    12
    12
    16
    15
    15
    15
    15
    15
    15
    15
    15
    15
    15
    15
    15
    15
    15
    15
    Direction of waves offshore
    Monday (22 December 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 Overcast Overcast Overcast Overcast Overcast Cloudy Cloudy Partly cloudy night 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 Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night
    Chance of precipitation
    40%
    40%
    40%
    30%
    20%
    20%
    10%
    <5%
    10%
    10%
    10%
    <5%
    10%
    10%
    10%
    10%
    <5%
    <5%
    <5%
    10%
    10%
    <5%
    <5%
    10%
    Temperature (°C)
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    10°
    10°
    10°
    10°
    10°
    Feels like temperature (°C)
    Wind direction and speed (mph)
    E
    11
    E
    11
    E
    11
    E
    11
    E
    11
    ESE
    11
    E
    10
    E
    10
    ESE
    10
    ESE
    10
    ESE
    10
    ESE
    11
    ESE
    11
    ESE
    11
    ESE
    12
    SE
    11
    ESE
    10
    ESE
    10
    ESE
    10
    ESE
    11
    ESE
    11
    ESE
    10
    ESE
    10
    ESE
    10
    Wind gust (mph)
    14
    13
    14
    14
    14
    13
    14
    13
    14
    13
    13
    15
    14
    13
    13
    12
    12
    15
    12
    13
    12
    12
    11
    12
    Visibility (description)
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    E
    Humidity
    89%
    88%
    88%
    87%
    87%
    86%
    86%
    85%
    85%
    85%
    84%
    84%
    83%
    82%
    82%
    80%
    80%
    80%
    79%
    78%
    79%
    80%
    81%
    80%
    UV - - - - - - - - 1 1 1 1 1 1 1 1 1 - - - - - - -
    Wind direction and speed (mph)
    10
    10
    10
    10
    10
    10
    9
    9
    9
    9
    9
    10
    11
    11
    11
    11
    10
    10
    10
    10
    10
    10
    10
    9
    Height of waves offshore (m)
    1.9
    1.8
    1.8
    1.8
    1.8
    1.9
    1.8
    1.8
    1.7
    1.6
    1.5
    1.4
    1.3
    1.3
    1.3
    1.2
    1.3
    1.3
    1.3
    1.3
    1.2
    1.1
    1.1
    1.0
    Period of waves offshore (s)
    15
    15
    15
    15
    15
    15
    15
    14
    14
    14
    14
    14
    14
    14
    14
    14
    14
    14
    13
    13
    13
    13
    13
    13
    Direction of waves offshore
    Tuesday (23 December 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 Cloudy Cloudy Cloudy Partly cloudy night Partly cloudy night Partly cloudy night Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast
    Chance of precipitation
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    <5%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    Temperature (°C)
    10°
    10°
    10°
    10°
    10°
    10°
    10°
    10°
    10°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    10°
    10°
    10°
    10°
    10°
    10°
    Feels like temperature (°C)
    Wind direction and speed (mph)
    E
    9
    E
    9
    E
    9
    E
    9
    ENE
    10
    ENE
    10
    ENE
    11
    ENE
    12
    ENE
    12
    ENE
    13
    ENE
    14
    ENE
    15
    ENE
    16
    NE
    18
    NE
    19
    NE
    20
    NE
    21
    NE
    21
    NE
    22
    NE
    23
    NE
    23
    NE
    23
    NE
    24
    NE
    24
    Wind gust (mph)
    14
    12
    10
    10
    10
    10
    12
    14
    15
    16
    15
    16
    18
    19
    19
    24
    26
    25
    26
    28
    29
    32
    34
    34
    Visibility (description)
    E
    E
    E
    E
    E
    VG
    VG
    VG
    G
    G
    G
    G
    G
    G
    G
    G
    G
    G
    G
    G
    G
    G
    G
    G
    Humidity
    79%
    80%
    81%
    81%
    82%
    82%
    83%
    83%
    83%
    83%
    83%
    83%
    83%
    83%
    82%
    82%
    81%
    79%
    79%
    79%
    80%
    81%
    80%
    79%
    UV - - - - - - - - 1 1 1 1 1 1 1 1 1 - - - - - - -
    Wind direction and speed (mph)
    9
    9
    9
    9
    10
    10
    11
    11
    12
    12
    13
    14
    16
    17
    18
    19
    20
    20
    21
    21
    21
    22
    23
    24
    Height of waves offshore (m)
    1.0
    1.1
    1.0
    1.0
    1.0
    1.0
    0.9
    0.9
    0.9
    0.9
    0.9
    0.8
    0.8
    0.9
    1.1
    1.2
    1.3
    1.3
    1.3
    1.3
    1.4
    1.4
    1.5
    1.6
    Period of waves offshore (s)
    13
    12
    12
    12
    12
    12
    12
    12
    12
    12
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    11
    9
    Direction of waves offshore
    Wednesday (24 December 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 Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast 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 Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night
    Chance of precipitation
    10%
    10%
    10%
    10%
    10%
    <5%
    <5%
    <5%
    <5%
    10%
    10%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    10%
    10%
    10%
    10%
    10%
    10%
    20%
    Temperature (°C)
    Feels like temperature (°C)
    Wind direction and speed (mph)
    NE
    25
    NE
    25
    NE
    26
    NE
    27
    ENE
    28
    ENE
    28
    ENE
    29
    ENE
    29
    ENE
    30
    ENE
    31
    ENE
    31
    ENE
    32
    ENE
    32
    ENE
    33
    ENE
    35
    ENE
    37
    ENE
    38
    ENE
    38
    ENE
    38
    ENE
    37
    ENE
    36
    ENE
    34
    ENE
    33
    ENE
    33
    Wind gust (mph)
    34
    36
    37
    38
    39
    41
    42
    42
    42
    42
    42
    42
    44
    46
    47
    49
    50
    50
    50
    48
    47
    46
    44
    44
    Visibility (description)
    G
    G
    G
    G
    G
    G
    G
    G
    G
    G
    G
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    79%
    79%
    79%
    78%
    78%
    78%
    78%
    77%
    77%
    76%
    75%
    73%
    74%
    71%
    70%
    69%
    69%
    68%
    68%
    68%
    67%
    67%
    68%
    68%
    UV - - - - - - - - 1 1 1 1 1 1 1 1 1 - - - - - - -
    Wind direction and speed (mph)
    24
    24
    25
    26
    27
    28
    29
    29
    30
    31
    31
    32
    33
    34
    35
    37
    38
    38
    38
    38
    36
    35
    34
    33
    Height of waves offshore (m)
    1.7
    1.8
    1.8
    1.9
    1.9
    2.0
    2.0
    2.1
    2.1
    2.2
    2.2
    2.3
    2.3
    2.3
    2.4
    2.4
    2.4
    2.4
    2.4
    2.4
    2.4
    2.4
    2.4
    2.3
    Period of waves offshore (s)
    6
    6
    6
    6
    6
    7
    7
    7
    7
    7
    7
    7
    7
    8
    8
    8
    8
    8
    8
    8
    8
    8
    8
    8
    Direction of waves offshore
    Thursday (25 December 2025)
    Time
    00:00
    03:00
    06:00
    09:00
    12:00
    15:00
    18:00
    21:00
    Weather symbols Partly cloudy night Overcast Overcast Overcast Overcast Overcast Overcast Overcast
    Chance of precipitation
    20%
    30%
    30%
    30%
    20%
    20%
    20%
    20%
    Temperature (°C)
    Feels like temperature (°C)
    -1°
    Wind direction and speed (mph)
    ENE
    32
    ENE
    31
    ENE
    31
    ENE
    29
    ENE
    27
    ENE
    27
    ENE
    24
    E
    20
    Wind gust (mph)
    46
    45
    42
    39
    36
    34
    33
    29
    Visibility (description)
    VG
    VG
    VG
    G
    G
    G
    G
    G
    Humidity
    69%
    70%
    72%
    74%
    73%
    74%
    76%
    75%
    UV - - - 1 1 1 - -
    Wind direction and speed (mph)
    32
    31
    30
    28
    27
    27
    24
    20
    Height of waves offshore (m)
    2.3
    2.3
    2.3
    2.4
    1.9
    1.4
    1.1
    0.9
    Period of waves offshore (s)
    8
    8
    8
    8
    8
    8
    7
    7
    Direction of waves offshore
    Friday (26 December 2025)
    Time
    00:00
    03:00
    06:00
    09:00
    12:00
    15:00
    18:00
    21:00
    Weather symbols Overcast Overcast Overcast Overcast Overcast Overcast Overcast Overcast
    Chance of precipitation
    10%
    10%
    20%
    10%
    10%
    10%
    20%
    20%
    Temperature (°C)
    Feels like temperature (°C)
    Wind direction and speed (mph)
    E
    18
    ENE
    17
    ENE
    18
    ENE
    18
    ENE
    19
    ENE
    21
    ENE
    20
    ENE
    20
    Wind gust (mph)
    28
    28
    29
    27
    28
    30
    30
    29
    Visibility (description)
    G
    G
    G
    G
    G
    G
    G
    G
    Humidity
    75%
    76%
    77%
    76%
    76%
    76%
    76%
    78%
    UV - - - 1 1 1 - -
    Wind direction and speed (mph)
    18
    Height of waves offshore (m)
    0.8
    Period of waves offshore (s)
    9
    Direction of waves offshore

    Tide times

    Saturday 20 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 20 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 20 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 20 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 21 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 21 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 21 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 21 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 22 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 22 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 22 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 22 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 23 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 23 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 23 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 23 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 24 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 24 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 24 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 24 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 25 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 25 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 25 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 25 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 26 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 26 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 26 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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 26 December

    Tide times and heights are from St. Peter Port tidal station which is 3.4 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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