St. Helena Is. (St Helena - Ascension and Tristan Da Cunha) weather

Forecast days

Overcast changing to sunny intervals by lunchtime.
Sunrise iconSunrise:
Sunset iconSunset:
VH UV
No pollution data.
No pollen data.

    7 day forecast for St. Helena Is.

    Today (23 May 2025)
    Time
    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 Cloudy Overcast Overcast Cloudy Overcast Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny day Clear night Clear night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night
    Chance of precipitation
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    Temperature
    19°
    19°
    19°
    19°
    19°
    19°
    19°
    19°
    19°
    19°
    19°
    20°
    20°
    20°
    20°
    20°
    20°
    20°
    20°
    Feels like temperature (°C)
    16°
    16°
    16°
    16°
    16°
    16°
    16°
    17°
    17°
    17°
    17°
    17°
    17°
    17°
    17°
    17°
    17°
    17°
    17°
    Wind direction and speed
    ESE
    18
    ESE
    18
    ESE
    18
    ESE
    17
    ESE
    17
    ESE
    17
    ESE
    16
    ESE
    15
    ESE
    14
    ESE
    14
    ESE
    14
    ESE
    13
    ESE
    13
    SE
    13
    SE
    13
    SE
    14
    SE
    14
    SE
    14
    SE
    14
    Wind gust (mph)
    25
    25
    25
    25
    24
    23
    22
    21
    20
    19
    19
    19
    19
    19
    19
    19
    20
    20
    19
    Visibility
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    74%
    74%
    74%
    74%
    74%
    74%
    75%
    74%
    74%
    75%
    74%
    73%
    73%
    73%
    73%
    74%
    74%
    74%
    74%
    UV - 1 1 2 4 4 4 8 7 5 3 1 1 - - - - - -
    Saturday (24 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 Overcast Overcast Overcast Overcast Overcast Overcast Overcast Cloudy Overcast Overcast Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Cloudy Overcast Overcast Overcast Overcast Overcast Overcast
    Chance of precipitation
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    Temperature (°C)
    20°
    19°
    19°
    19°
    19°
    19°
    19°
    19°
    19°
    19°
    19°
    19°
    19°
    19°
    19°
    19°
    20°
    20°
    20°
    20°
    20°
    20°
    20°
    19°
    Feels like temperature (°C)
    17°
    17°
    17°
    17°
    17°
    17°
    17°
    17°
    17°
    17°
    18°
    18°
    18°
    18°
    18°
    18°
    18°
    18°
    18°
    18°
    18°
    18°
    18°
    18°
    Wind direction and speed (mph)
    ESE
    14
    ESE
    13
    ESE
    13
    ESE
    13
    ESE
    13
    ESE
    13
    ESE
    13
    ESE
    13
    ESE
    13
    ESE
    12
    ESE
    12
    ESE
    11
    ESE
    10
    ESE
    10
    SE
    10
    SE
    10
    SE
    10
    SE
    10
    SE
    10
    SE
    11
    SE
    11
    SE
    12
    SE
    12
    SE
    12
    Wind gust (mph)
    19
    19
    18
    19
    18
    18
    18
    18
    18
    17
    17
    16
    15
    14
    14
    14
    15
    16
    16
    17
    17
    17
    17
    17
    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
    75%
    75%
    75%
    75%
    74%
    75%
    75%
    75%
    75%
    74%
    74%
    74%
    74%
    74%
    73%
    73%
    73%
    74%
    73%
    73%
    74%
    74%
    74%
    75%
    UV - - - - - - 1 1 1 4 5 7 8 7 6 3 1 1 - - - - - -
    Sunday (25 May 2025)
    Time
    00:00
    03:00
    06:00
    09:00
    12:00
    15:00
    18:00
    21:00
    Weather symbols Overcast Overcast Overcast Cloudy Sunny intervals Sunny intervals Overcast Overcast
    Chance of precipitation
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    Temperature (°C)
    19°
    19°
    19°
    19°
    19°
    19°
    20°
    20°
    Feels like temperature (°C)
    18°
    17°
    18°
    18°
    18°
    19°
    19°
    18°
    Wind direction and speed (mph)
    SE
    12
    SE
    11
    SE
    11
    ESE
    10
    ESE
    9
    ESE
    8
    SE
    9
    SE
    10
    Wind gust (mph)
    17
    17
    16
    16
    13
    13
    15
    16
    Visibility (description)
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    74%
    75%
    75%
    74%
    74%
    73%
    72%
    73%
    UV - - 1 2 8 3 - -
    Monday (26 May 2025)
    Time
    00:00
    03:00
    06:00
    09:00
    12:00
    15:00
    18:00
    21:00
    Weather symbols Overcast Overcast Overcast Cloudy Overcast Cloudy Overcast Overcast
    Chance of precipitation
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    Temperature (°C)
    19°
    19°
    19°
    19°
    19°
    19°
    19°
    19°
    Feels like temperature (°C)
    18°
    18°
    18°
    18°
    18°
    19°
    18°
    18°
    Wind direction and speed (mph)
    SE
    10
    SE
    10
    SE
    10
    ESE
    9
    ESE
    8
    SE
    7
    SE
    8
    SE
    10
    Wind gust (mph)
    15
    15
    15
    13
    13
    13
    14
    15
    Visibility (description)
    VG
    G
    VG
    VG
    VG
    VG
    VG
    G
    Humidity
    74%
    74%
    73%
    75%
    74%
    73%
    72%
    73%
    UV - - 1 3 7 3 - -
    Tuesday (27 May 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 Cloudy Overcast
    Chance of precipitation
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    Temperature (°C)
    19°
    19°
    19°
    19°
    19°
    19°
    19°
    19°
    Feels like temperature (°C)
    18°
    18°
    18°
    18°
    18°
    18°
    18°
    17°
    Wind direction and speed (mph)
    SE
    10
    SE
    10
    SE
    10
    SE
    10
    ESE
    10
    SE
    9
    SE
    10
    SE
    12
    Wind gust (mph)
    15
    16
    16
    15
    14
    15
    17
    19
    Visibility (description)
    G
    G
    VG
    G
    VG
    VG
    VG
    G
    Humidity
    72%
    73%
    72%
    73%
    72%
    72%
    71%
    71%
    UV - - 1 3 8 3 - -
    Wednesday (28 May 2025)
    Time
    00:00
    03:00
    06:00
    09:00
    12:00
    15:00
    18:00
    21:00
    Weather symbols Cloudy Overcast Overcast Sunny intervals Sunny intervals Sunny intervals Partly cloudy night Partly cloudy night
    Chance of precipitation
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    Temperature (°C)
    19°
    19°
    19°
    19°
    19°
    20°
    20°
    20°
    Feels like temperature (°C)
    17°
    17°
    17°
    16°
    17°
    17°
    17°
    17°
    Wind direction and speed (mph)
    SE
    13
    SE
    14
    SE
    14
    ESE
    15
    ESE
    15
    ESE
    14
    ESE
    15
    ESE
    15
    Wind gust (mph)
    20
    21
    22
    22
    20
    20
    22
    22
    Visibility (description)
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    73%
    72%
    73%
    71%
    71%
    72%
    72%
    71%
    UV - - 1 3 8 3 - -
    Thursday (29 May 2025)
    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 Sunny intervals Sunny intervals Sunny day Partly cloudy night Partly cloudy night
    Chance of precipitation
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    Temperature (°C)
    20°
    19°
    19°
    19°
    19°
    20°
    20°
    20°
    Feels like temperature (°C)
    17°
    16°
    16°
    16°
    16°
    16°
    16°
    16°
    Wind direction and speed (mph)
    ESE
    15
    ESE
    16
    ESE
    17
    ESE
    18
    ESE
    17
    ESE
    17
    ESE
    18
    ESE
    19
    Wind gust (mph)
    23
    23
    25
    25
    24
    25
    27
    28
    Visibility (description)
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    72%
    74%
    73%
    74%
    73%
    73%
    73%
    74%
    UV - - 1 3 8 3 - -

    UK video forecast

    weather map
    Forecast
    Forecast for 05:00 (UTC), Fri
    Updated 01:22 (UTC+1) on Fri 23 May 2025
    Loading map...

    More from the Met Office