Portsmouth Harbour - Haslar Marina Weather Forecast

    • 16
    • 19

    Cloudy

    • 13
    • 20

    Cloudy

    • 17
    • 18

    Cloudy

    • 17
    • 19

    Cloudy

    • 15
    • 20

    Cloudy

    • 15
    • 19

    Sunny day

Today 16 Sep London and South East England

Bright and dry through the morning, more cloud developing during the afternoon with isolated showers possible in the far east, elsewhere should remain dry. Moderate westerly breeze. Maximum temperature 19 °C.

Graph Plots Open in Graphs

  • Temperature Forecast Met Office

  • Temperature Real-Time

Portsmouth Harbour - Haslar Marina Temperature Statistics

September Temperature

Thorney Island (14km)

  • Lowest 12 September, 2026

    9.5 °C

  • Average September

    17.8 °C

  • Highest 3 September, 2026

    23.5 °C

Climate (2021–2026)

Thorney Island (14km)

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

  • Average Low 2021–2026

    9 °C

  • Average 2021–2026

    12.4 °C

  • Average High 2021–2026

    15.6 °C
Get WillyWeather+ to remove ads