Portsmouth Harbour Entrance Weather Forecast

    • 8
    • 8

    Cloudy

    • 7
    • 10

    Light rain

    • 7
    • 9

    Partly cloudy

    • 7
    • 9

    Light rain

    • 6
    • 9

    Light rain shower

    • 5
    • 8

    Cloudy

Today 26 Jan London and South East England

Remaining generally cloudy and cool on Monday, with perhaps a few light showers. More persistent, and occasionally heavy rain spreads back in during the evening and overnight. Maximum temperature 6 °C.

Graph Plots Open in Graphs

  • Temperature Forecast Met Office

  • Temperature Real-Time

Portsmouth Harbour Entrance Temperature Statistics

January Temperature

Thorney Island (13km)

  • Lowest 6 January, 2026

    -4.9 °C

  • Average January

    5.8 °C

  • Highest 18 January, 2026

    10.7 °C

Climate (2021–Present)

Thorney Island (13km)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    8.6 °C

  • Average 2021–2026

    12 °C

  • Average High 2021–2026

    15.1 °C
Get WillyWeather+ to remove ads