Cassie Rock Weather Forecast

    • 13
    • 20

    Clear

    • 13
    • 20

    Sunny

    • 14
    • 21

    Possible shower

    • 16
    • 20

    Shower or two

    • 16
    • 21

    Shower or two

    • 15
    • 22

    Partly cloudy

    • 15
    • 23

    Mostly sunny

Today 18 Apr Sydney

Sunny. Winds south to southeasterly 15 to 25 km/h becoming light in the evening.

Sydney Coastal Waters

Broken Bay to Port Hacking
Wind
Southerly 15 to 20 knots, reaching up to 25 knots offshore during the afternoon and evening.
Seas
1 to 1.5 metres, increasing to 1.5 to 2 metres offshore.
1st Swell
Southerly 2.5 to 3 metres inshore, increasing to 2.5 to 4 metres offshore.
Weather
Mostly clear.
Caution
Large and powerful surf conditions in the evening are expected to be hazardous for coastal activities such as crossing bars by boat and rock fishing.
Weather Situation
Southerly winds will be maintained during the weekend as a high pressure system over Victoria extends a ridge over the coastal waters and enters the southern Tasman Sea by Sunday. From Monday, winds should gradually turn southeasterly as the ridge persists through to mid-week.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cassie Rock Temperature Statistics View More

April Temperature

Terrey Hills (10km)

  • Lowest 13 April, 2026

    9.9 °C

  • Average April

    18.5 °C

  • Highest 7 April, 2026

    29.4 °C

Climate (2021–Present)

Terrey Hills (10km)

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  • Average Low 2021–2026

    13.4 °C

  • Average 2021–2026

    17 °C

  • Average High 2021–2026

    21.9 °C
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