Mort Bay Weather Forecast

    • 15
    • 23

    Rain increasing

    • 15
    • 22

    Rain easing

    • 13
    • 20

    Sunny

    • 12
    • 20

    Shower or two

    • 13
    • 21

    Showers

    • 15
    • 22

    Shower or two

    • 13
    • 21

    Possible shower

Today 18 May Sydney

Cloudy. Very high chance of rain, most likely in the afternoon and evening. Light winds.

Sydney Enclosed Waters

Sydney Harbour, Pittwater and Botany Bay
Wind
North to northwesterly below 10 knots.
Seas
Below 0.5 metres.
Weather
Cloudy. Near 100% chance of rain.
Weather Situation
A strong high pressure system over the southern Tasman Sea will slowly drift east towards New Zealand over the next several days while directing an onshore easterly airstream over Sydney Local Waters. A coastal trough is expected to deepen about the north coast early this week, deepening into a Tasman Low, shifting winds to the south and bringing unsettled weather.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Mort Bay Temperature Statistics View More

May Temperature

Sydney (Observatory Hill) (1km)

  • Lowest 8 May, 2026

    9.9 °C

  • Average May

    17.7 °C

  • Highest 3 May, 2026

    25.9 °C

Climate (2021–Present)

Sydney (Observatory Hill) (1km)

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  • Average Low 2021–2026

    14.8 °C

  • Average 2021–2026

    18.4 °C

  • Average High 2021–2026

    23.5 °C
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