Gannons Bay Weather Forecast

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    Shower or two

Today 18 Mar Sydney

Cloudy. High chance of showers. The chance of a thunderstorm this morning, possibly severe with heavy rain which may lead to flash flooding. Winds southerly 15 to 20 km/h tending southeasterly in the middle of the day then becoming light in the evening.

Sydney Coastal Waters

Broken Bay to Port Hacking
Wind
Southeasterly 10 to 15 knots decreasing to about 10 knots in the early afternoon.
Seas
Around 1 metre.
1st Swell
Southerly around 1 metre.
Weather
Partly cloudy. 80% chance of showers. The chance of a thunderstorm this morning.
Weather Situation
A high over the Tasman Sea extends a ridge over northern coastal waters, while a trough is brushing the southern and central parts of the coast, bringing a coastal southerly change in its wake, before stalling about the Hunter Coast later today. Then, a series of high pressure systems will pass to the south, maintaining moist onshore easterly winds through the second half of the week.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Gannons Bay Temperature Statistics View More

March Temperature

Sydney Airport (14km)

  • Lowest 15 March, 2026

    16.5 °C

  • Average March

    23.3 °C

  • Highest 4 March, 2026

    30 °C

Climate (2021–Present)

Sydney Airport (14km)

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  • Average Low 2021–2026

    14.8 °C

  • Average 2021–2026

    18.7 °C

  • Average High 2021–2026

    23.4 °C
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