St Mary's Weather Forecast

    • 10
    • 12

    Cloudy

    • 12
    • 12

    Light rain

    • 13
    • 13

    Cloudy

    • 13
    • 14

    Cloudy

    • 13
    • 15

    Cloudy

    • 13
    • 14

    Cloudy

    • 13
    • 14

    Cloudy

Today 17 May South West England

A bright start but cloud will quickly bubble up allowing a few showers to develop by lunchtime. Showers then becoming increasingly frequent and heavier later in the day. Feeling a little less cool but temperatures still below average. Maximum temperature 15 °C.

Tonight 17 May South West England

Scattered showers continuing overnight with some clearer spells in-between. Showers perhaps becoming more organised and heavier later in the night. Minimum temperature 7 °C.

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St Mary's Temperature Statistics

May Temperature

Scilly St Marys (1km)

  • Lowest 8 May, 2026

    9.2 °C

  • Average May

    11.8 °C

  • Highest 4 May, 2026

    15.4 °C

Climate (2021–Present)

Scilly St Marys (1km)

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  • Average Low 2021–2026

    11.2 °C

  • Average 2021–2026

    12.8 °C

  • Average High 2021–2026

    14.4 °C
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