Cosham (Portsmouth) weather

Forecast days

Overcast changing to mist by early evening.
Sunrise iconSunrise:
Sunset iconSunset:
L UV
L Pollution
No pollen data.

    7 day forecast for Cosham

    Today (7 March 2026)
    Time
    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 Overcast Overcast Overcast Mist Mist Mist Mist Mist
    Chance of precipitation
    <5%
    10%
    10%
    10%
    10%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    10%
    10%
    <5%
    <5%
    20%
    Temperature
    10°
    11°
    11°
    11°
    11°
    11°
    11°
    10°
    10°
    10°
    10°
    10°
    Feels like temperature (°C)
    10°
    10°
    10°
    10°
    10°
    10°
    Wind direction and speed
    NE
    6
    ENE
    6
    ENE
    6
    ENE
    6
    ENE
    5
    E
    5
    E
    5
    SE
    5
    SE
    5
    SE
    5
    SE
    5
    ESE
    5
    ESE
    4
    ESE
    4
    E
    4
    E
    5
    E
    5
    Wind gust (mph)
    15
    16
    15
    15
    14
    13
    12
    12
    12
    11
    12
    13
    14
    15
    15
    16
    16
    Visibility
    M
    M
    M
    M
    M
    G
    G
    G
    G
    G
    G
    M
    M
    M
    M
    M
    M
    Humidity
    97%
    96%
    95%
    93%
    91%
    86%
    85%
    85%
    85%
    86%
    87%
    92%
    93%
    94%
    95%
    94%
    94%
    UV 1 1 1 1 1 1 1 1 1 1 1 - - - - - -
    Sunday (8 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 Mist Mist Mist Mist Mist Mist Mist Mist Mist Overcast Overcast Overcast Cloudy Sunny intervals Sunny intervals Sunny intervals Mist Mist Mist Mist Mist Mist Mist Mist
    Chance of precipitation
    20%
    30%
    30%
    30%
    20%
    20%
    10%
    10%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    10%
    10%
    20%
    Temperature (°C)
    10°
    11°
    11°
    12°
    12°
    12°
    11°
    10°
    Feels like temperature (°C)
    10°
    10°
    11°
    10°
    10°
    Wind direction and speed (mph)
    E
    5
    E
    5
    E
    5
    E
    5
    E
    5
    E
    5
    E
    5
    E
    5
    E
    6
    E
    6
    ESE
    6
    ESE
    6
    ESE
    6
    SE
    7
    SE
    7
    SE
    7
    SE
    7
    SE
    6
    ESE
    6
    ESE
    6
    ESE
    6
    ESE
    6
    ESE
    5
    E
    5
    Wind gust (mph)
    15
    15
    15
    15
    15
    15
    15
    14
    15
    15
    15
    15
    15
    14
    14
    14
    13
    12
    12
    13
    13
    13
    13
    13
    Visibility (description)
    M
    M
    M
    M
    M
    M
    M
    M
    M
    M
    M
    G
    G
    G
    G
    G
    G
    M
    G
    M
    M
    P
    P
    P
    Humidity
    94%
    95%
    95%
    95%
    96%
    96%
    96%
    96%
    96%
    93%
    91%
    86%
    85%
    82%
    81%
    83%
    85%
    87%
    93%
    95%
    96%
    97%
    97%
    98%
    UV - - - - - - 1 1 1 1 1 1 2 2 1 1 1 1 - - - - - -
    Monday (9 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 Mist Fog Fog Fog Fog Fog Fog Fog Mist Mist Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny day Sunny day Sunny intervals Partly cloudy night Partly cloudy night Mist Mist Mist Mist
    Chance of precipitation
    20%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    10%
    10%
    20%
    10%
    Temperature (°C)
    10°
    11°
    12°
    13°
    14°
    14°
    14°
    13°
    13°
    11°
    11°
    10°
    10°
    10°
    Feels like temperature (°C)
    11°
    12°
    13°
    13°
    13°
    13°
    13°
    12°
    11°
    10°
    10°
    Wind direction and speed (mph)
    E
    5
    E
    5
    E
    5
    E
    5
    E
    5
    E
    5
    E
    5
    E
    4
    E
    4
    ESE
    4
    SE
    4
    SE
    4
    SSE
    4
    S
    5
    S
    5
    SSE
    5
    S
    5
    S
    5
    S
    4
    S
    4
    S
    4
    SSW
    4
    SSW
    3
    SSW
    3
    Wind gust (mph)
    12
    12
    11
    11
    10
    10
    10
    10
    9
    9
    10
    10
    11
    12
    12
    11
    10
    9
    8
    8
    8
    8
    8
    8
    Visibility (description)
    P
    P
    P
    P
    P
    P
    P
    P
    P
    M
    M
    M
    G
    G
    G
    G
    VG
    G
    G
    G
    M
    M
    M
    M
    Humidity
    98%
    98%
    98%
    98%
    98%
    99%
    99%
    99%
    97%
    94%
    89%
    86%
    80%
    76%
    75%
    75%
    77%
    83%
    87%
    92%
    93%
    95%
    96%
    96%
    UV - - - - - - 1 1 1 1 1 2 2 2 1 1 1 1 - - - - - -
    Tuesday (10 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 Mist Mist Mist Mist Mist Mist Mist Cloudy Cloudy Sunny intervals 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 Cloudy Cloudy
    Chance of precipitation
    10%
    10%
    <5%
    <5%
    <5%
    10%
    10%
    10%
    10%
    10%
    10%
    10%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    20%
    30%
    Temperature (°C)
    10°
    11°
    12°
    12°
    13°
    13°
    13°
    12°
    12°
    11°
    10°
    10°
    10°
    10°
    10°
    Feels like temperature (°C)
    10°
    11°
    11°
    11°
    11°
    11°
    10°
    10°
    Wind direction and speed (mph)
    SSW
    3
    SW
    3
    WSW
    3
    WSW
    3
    WSW
    3
    W
    3
    WSW
    3
    WSW
    3
    SSW
    3
    SSW
    4
    SSW
    4
    SSW
    6
    SSW
    7
    SSW
    8
    SSW
    9
    SSW
    9
    SW
    9
    SW
    9
    SSW
    8
    SSW
    8
    SSW
    8
    S
    8
    SSW
    9
    SSW
    10
    Wind gust (mph)
    8
    7
    8
    8
    8
    8
    8
    8
    8
    10
    13
    16
    18
    18
    19
    20
    19
    16
    16
    17
    17
    19
    21
    23
    Visibility (description)
    M
    M
    P
    P
    P
    M
    P
    P
    M
    M
    G
    G
    VG
    VG
    VG
    VG
    VG
    VG
    G
    G
    G
    G
    G
    G
    Humidity
    97%
    97%
    98%
    99%
    99%
    99%
    99%
    99%
    96%
    92%
    87%
    84%
    78%
    76%
    74%
    73%
    76%
    81%
    86%
    90%
    92%
    92%
    91%
    89%
    UV - - - - - - 1 1 1 1 1 2 2 2 1 1 1 1 - - - - - -
    Wednesday (11 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 Cloudy Cloudy Cloudy Light rain Light rain Light rain Light rain Light rain Light shower day Light shower day Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny day Sunny day Clear night Clear night Clear night Clear night Clear night Clear night
    Chance of precipitation
    30%
    40%
    40%
    60%
    70%
    80%
    80%
    70%
    60%
    60%
    50%
    40%
    30%
    30%
    20%
    20%
    10%
    10%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    Temperature (°C)
    10°
    10°
    10°
    10°
    10°
    10°
    10°
    10°
    10°
    10°
    11°
    12°
    12°
    13°
    13°
    13°
    12°
    12°
    11°
    10°
    Feels like temperature (°C)
    10°
    10°
    10°
    10°
    10°
    10°
    Wind direction and speed (mph)
    SSW
    10
    SSW
    11
    SSW
    12
    SSW
    13
    SSW
    14
    SSW
    14
    SSW
    14
    SW
    14
    SW
    14
    SW
    13
    WSW
    13
    WSW
    13
    W
    13
    W
    12
    W
    12
    W
    12
    W
    12
    W
    10
    W
    9
    W
    9
    W
    8
    W
    8
    WSW
    7
    WSW
    7
    Wind gust (mph)
    23
    27
    29
    30
    32
    30
    31
    31
    30
    29
    28
    27
    25
    25
    25
    24
    23
    21
    19
    18
    18
    17
    17
    18
    Visibility (description)
    G
    G
    G
    G
    G
    G
    G
    G
    G
    G
    G
    G
    G
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    89%
    90%
    90%
    89%
    89%
    90%
    91%
    91%
    90%
    89%
    81%
    72%
    66%
    61%
    59%
    57%
    58%
    62%
    67%
    72%
    75%
    77%
    80%
    83%
    UV - - - - - - 1 1 1 1 2 2 2 2 2 1 1 1 1 - - - - -
    Thursday (12 March 2026)
    Time
    00:00
    03:00
    06:00
    09:00
    12:00
    15:00
    18:00
    21:00
    Weather symbols Partly cloudy night Cloudy Overcast Overcast Overcast Overcast Drizzle Light rain
    Chance of precipitation
    <5%
    10%
    10%
    20%
    30%
    40%
    50%
    50%
    Temperature (°C)
    10°
    11°
    11°
    11°
    10°
    Feels like temperature (°C)
    Wind direction and speed (mph)
    WSW
    7
    SW
    8
    SSW
    10
    SSW
    16
    SSW
    19
    SSW
    19
    SSW
    19
    SSW
    19
    Wind gust (mph)
    16
    19
    29
    36
    38
    36
    38
    36
    Visibility (description)
    VG
    G
    G
    G
    G
    G
    M
    G
    Humidity
    84%
    86%
    86%
    80%
    75%
    75%
    79%
    81%
    UV - - 1 1 2 1 1 -
    Friday (13 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 shower day Cloudy Cloudy Cloudy Cloudy
    Chance of precipitation
    70%
    70%
    60%
    50%
    40%
    40%
    30%
    30%
    Temperature (°C)
    10°
    10°
    11°
    Feels like temperature (°C)
    Wind direction and speed (mph)
    SSW
    18
    SW
    15
    SW
    12
    SW
    11
    SW
    11
    SW
    11
    SW
    9
    SW
    8
    Wind gust (mph)
    34
    28
    24
    25
    24
    22
    18
    16
    Visibility (description)
    G
    G
    G
    G
    VG
    VG
    VG
    VG
    Humidity
    85%
    87%
    86%
    83%
    68%
    62%
    74%
    81%
    UV - - 1 1 2 1 1 -

    UK video forecast

    Cosham weather map

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    WARNING
    Flood warnings icon
    Flood warnings in force for England
    Flood warnings in force for England

    London & South East England weather forecast

    Headline:

    Patchy light rain and drizzle for western areas.

    Today:

    Generally overcast, with early hill fog gradually lifting, although limited bright or sunny intervals may eventually develop for eastern areas. The cloud will be thick enough to bring patchy light rain and drizzle at times, most likely across western areas. Maximum temperature 13 °C.

    Tonight:

    Predominantly dry and overcast, with hill fog gradually developing. However, some clear intervals may occur across eastern areas, whilst further west there is a chance of occasional patchy light rain. Minimum temperature 5 °C.

    Sunday:

    Mainly dry and overcast at first, with hill fog. Through the day brighter conditions gradually develop, and sunny spells develop for many areas leading to above average temperatures occurring. Maximum temperature 15 °C.

    Outlook for Monday to Wednesday:

    Monday overcast with patchy drizzle and early hill fog. Tuesday becoming brighter with perhaps showers arriving. Wednesday breezy with sunshine and scattered showers. Temperatures close to or slightly above average.

    Updated:

    UK long range weather forecast

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