Harnham Weather Forecast

    • 12
    • 21

    Sunny day

    • 13
    • 19

    Cloudy

    • 10
    • 19

    Cloudy

    • 15
    • 18

    Cloudy

    • 15
    • 21

    Light rain

    • 13
    • 20

    Partly cloudy

    • 13
    • 21

    Sunny day

Today 15 Sep South West England

A cloudy start, with outbreaks of rain sinking southeastwards. Turning drier and brighter from the west by mid-morning with plenty of dry and sunny spells. Isolated showers may form later but feeling much fresher than of late. Maximum temperature 21 °C.

Tonight 15 Sep South West England

Showers continuing in places within the northwesterly breeze, gusty around coastal areas. Turning cloudier overnight, feeling cooler than previous nights. Minimum temperature 10 °C.

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Harnham Temperature Statistics

September Temperature

Boscombe Down (12km)

  • Lowest 10 September, 2026

    7.5 °C

  • Average September

    16.6 °C

  • Highest 6 September, 2026

    25.7 °C

Climate (2021–2026)

Boscombe Down (12km)

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  • Average Low 2021–2026

    7.4 °C

  • Average 2021–2026

    11.4 °C

  • Average High 2021–2026

    15.4 °C
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