St Marys South Weather Forecast

    • 7
    • 23

    Morning fog then sunny

    • 8
    • 20

    Partly cloudy

    • 8
    • 25

    Mostly sunny

    • 11
    • 24

    Showers

    • 13
    • 21

    Showers

    • 10
    • 22

    Partly cloudy

    • 7
    • 23

    Sunny

Today 22 Aug Sydney

Mostly sunny. Patchy fog this morning, mainly in the west. Slight chance of a shower along the coastal fringe later tonight. Near zero chance of rain elsewhere. Light winds becoming westerly 15 to 20 km/h in the morning then becoming light in the early afternoon.

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St Marys South Temperature Statistics View More

August Temperature

Horsley Park (11km)

  • Lowest 5 August, 2026

    1.5 °C

  • Average August

    12.1 °C

  • Highest 3 August, 2026

    22.3 °C

Climate (2021–2026)

Horsley Park (11km)

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  • Average Low 2021–2026

    12.4 °C

  • Average 2021–2026

    17.4 °C

  • Average High 2021–2026

    23.8 °C
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