The Old Mans Hat Weather Forecast

    • 16
    • 19

    Rain at times

    • 14
    • 18

    Possible late shower

    • 14
    • 19

    Shower or two. Becoming windy

    • 15
    • 19

    Showers easing

    • 17
    • 20

    Showers

    • 16
    • 21

    Shower or two

    • 15
    • 19

    Shower or two

Today 19 May Sydney

Partly cloudy. High chance of showers, becoming less likely at night. The chance of thunderstorms in the northwest in the afternoon and evening. Light winds becoming southwesterly 15 to 20 km/h in the early afternoon then becoming light in the late evening.

Sydney Enclosed Waters

Sydney Harbour, Pittwater and Botany Bay
Wind
Southwesterly 15 to 20 knots.
Seas
Below 0.5 metres.
Weather
Partly cloudy. 60% chance of showers. The chance of a thunderstorm.
Weather Situation
A trough has crossed Sydney Waters, and a low pressure system is forming within the trough off the south coast. The low will then head further offshore and remain over the Tasman Sea for the next several days, whipping fresh to strong southerly winds and large powerful waves to the coastline mid to late this week.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

The Old Mans Hat Temperature Statistics View More

May Temperature

Sydney (Observatory Hill) (9km)

  • 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) (9km)

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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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