Mona Vale Beach Weather Forecast

    • 15
    • 21

    Possible shower

    • 17
    • 22

    Shower or two

    • 17
    • 22

    Showers

    • 18
    • 23

    Possible shower

    • 18
    • 26

    Partly cloudy

    • 19
    • 27

    Showers increasing

    • 18
    • 23

    Shower or two

Today 20 Oct Sydney

Partly cloudy. The chance of fog in the west early this morning. Medium chance of showers, most likely this afternoon. The chance of a thunderstorm during this afternoon and evening. Light winds becoming northeasterly 15 to 25 km/h in the middle of the day then becoming light in the late evening.

Sydney Coastal Waters

Broken Bay to Port Hacking
Wind
Northeasterly 15 to 20 knots.
Seas
Around 1 metre, increasing to 1 to 1.5 metres during the afternoon.
1st Swell
Northeasterly below 1 metre.
Weather
Partly cloudy. 50% chance of showers. The chance of a thunderstorm.
Weather Situation
A strong high pressure system over the Tasman Sea is maintaining northeasterly winds across the coastal waters. Very little change of weather pattern is forecast through the week due to the slow movement of the high. Then, a cold front looks set to cross the state during the weekend into early next week, bringing a southerly change in its wake.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Mona Vale Beach Temperature Statistics View More

October Temperature

Terrey Hills (8 km)

  • Lowest 15 October, 2026

    8.5 °C

  • Average October

    17.3 °C

  • Highest 12 October, 2026

    34 °C

Climate (2021–2026)

Terrey Hills (8 km)

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  • Average Low 2021–2026

    13.6 °C

  • Average 2021–2026

    17.1 °C

  • Average High 2021–2026

    22 °C
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