Royal Motor Yacht Club of New South Wales Weather Forecast

    • 19
    • 21

    Rain

    • 20
    • 23

    Showers

    • 19
    • 22

    Shower or two

    • 18
    • 22

    Shower or two

    • 18
    • 23

    Possible shower

Today 18 Jan Sydney

Cloudy. Very high chance of rain. The chance of a thunderstorm in the morning, possibly severe with heavy rain which may lead to flash flooding along the coastal fringe. Winds southerly 20 to 30 km/h tending southeasterly 25 to 35 km/h before dawn.

Sydney Enclosed Waters

Sydney Harbour, Pittwater and Botany Bay
Wind
Southeasterly 20 to 30 knots decreasing to 15 to 25 knots before dawn.
Seas
Below 0.5 metres.
Weather
Cloudy. 90% chance of rain. The chance of a thunderstorm in the morning.
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  • Temperature Forecast Bureau of Meteorology

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Royal Motor Yacht Club of New South Wales Temperature Statistics View More

January Temperature

Sydney (Observatory Hill) (4km)

  • Lowest 2 January, 2026

    17.3 °C

  • Average January

    23 °C

  • Highest 10 January, 2026

    42.2 °C

Climate (2021–Present)

Sydney (Observatory Hill) (4km)

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  • Average Low 2021–2026

    14.7 °C

  • Average 2021–2026

    18.3 °C

  • Average High 2021–2026

    23.5 °C
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