The Old Mans Hat Weather Forecast

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    • 28

    Showers. Storm developing

    • 20
    • 25

    Partly cloudy

    • 20
    • 25

    Partly cloudy

    • 20
    • 29

    Partly cloudy

    • 21
    • 33

    Sunny

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    • 33

    Sunny

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    Sunny

Today 4 Jan Sydney

Partly cloudy. Medium chance of showers, most likely in the afternoon. A thunderstorm likely in the afternoon and evening, possibly severe in the west with damaging winds, large hail and heavy rain which may lead to flash flooding. Winds northwest to northeasterly 15 to 20 km/h tending northeast to southeasterly in the middle of the day then becoming light in the late evening.

Sydney Enclosed Waters

Sydney Harbour, Pittwater and Botany Bay
Wind
Northeasterly 10 to 15 knots tending easterly in the middle of the day then becoming variable below 10 knots in the evening.
Seas
Below 0.5 metres.
Weather
Partly cloudy. 60% chance of showers. A thunderstorm likely in the afternoon and evening.
Weather Situation
A high in the Tasman Sea maintains a ridge over Sydney Waters, generating fresh northeasterly winds. A trough will brush along the coast later Sunday or Monday, bringing a southerly change to Sydney Waters. Then, winds will turn northerly again as another high pressure system enters the Tasman Sea midweek.
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  • Temperature Forecast Bureau of Meteorology

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The Old Mans Hat Temperature Statistics View More

January Temperature

Sydney (Observatory Hill) (9km)

  • Lowest 2 January, 2026

    17.3 °C

  • Average January

    19.7 °C

  • Highest 2 January, 2026

    26 °C

Climate (2021–Present)

Sydney (Observatory Hill) (9km)

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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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