Cassie Rock Weather Forecast

    • 20
    • 33

    Clear

    • 21
    • 24

    Partly cloudy

    • 21
    • 25

    Partly cloudy

    • 20
    • 27

    Sunny

    • 21
    • 26

    Partly cloudy

    • 21
    • 27

    Partly cloudy

    • 22
    • 29

    Sunny

Today 25 Jan Sydney

Mostly clear. The chance of a thunderstorm in the west early this evening. Winds east to northeasterly 15 to 25 km/h tending north to northeasterly 15 to 20 km/h in the evening then becoming light in the late evening.

Sydney Coastal Waters

Broken Bay to Port Hacking
Wind
Northeasterly 15 to 20 knots turning northerly in the evening.
Seas
Around 1 metre, increasing to 1 to 1.5 metres offshore by early evening.
1st Swell
Southeasterly 2 to 2.5 metres.
Weather
Clear.
Caution
Surf conditions for the rest of the day may be more powerful than they appear and are expected to be hazardous for coastal activities such as crossing bars by boat and rock fishing.
Weather Situation
A broad high pressure ridge lies along across the coast while a cold front brushes the southern coast, reaching the central coastal fringe during the late evening. The front weakens into a trough and slowly crosses the northern coastal waters through Monday, quickly followed by a ridge in its wake. Another trough slips southeast of the New South Wales coast during Wednesday, bringing a weak southeasterly change into Thursday.
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  • Temperature Forecast Bureau of Meteorology

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Cassie Rock Temperature Statistics View More

January Temperature

Terrey Hills (10km)

  • Lowest 21 January, 2026

    14.6 °C

  • Average January

    20.9 °C

  • Highest 10 January, 2026

    40.5 °C

Climate (2021–Present)

Terrey Hills (10km)

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  • Average Low 2021–2026

    13.4 °C

  • Average 2021–2026

    16.9 °C

  • Average High 2021–2026

    21.8 °C
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