Garden Island Weather Forecast

    • 18
    • 25

    Clear

    • 16
    • 31

    Sunny

    • 19
    • 35

    Mostly sunny

    • 20
    • 30

    Partly cloudy

    • 20
    • 38

    Mostly sunny

    • 23
    • 32

    Shower or two

    • 21
    • 28

    Shower or two

Today 17 Dec Hunter

Clear. Winds northeast to southeasterly 15 to 20 km/h becoming light in the late evening.

Hunter Coastal Waters

Seal Rocks to Broken Bay
Wind
Northeasterly 15 to 20 knots.
Seas
Around 1 metre, increasing to 1 to 1.5 metres south of Port Stephens.
1st Swell
Southerly 1.5 metres inshore, increasing to 1.5 to 2 metres offshore north of Norah Head.
Weather
Clear.
Weather Situation
A high in the Tasman Sea is directing northerly winds over Coastal Waters. Later tomorrow or Friday a weak trough will bring a brief southerly change to much of the coast before winds turn northerly again over the weekend. Following this, a cold front will bring a fresh to strong southerly change later on Sunday or Monday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Garden Island Temperature Statistics View More

December Temperature

Williamtown RAAF Base (21km)

  • Lowest 2 December, 2025

    11.3 °C

  • Average December

    22.6 °C

  • Highest 6 December, 2025

    40.2 °C

Climate (2020–Present)

Williamtown RAAF Base (21km)

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  • Average Low 2020–2025

    13.3 °C

  • Average 2020–2025

    18 °C

  • Average High 2020–2025

    23.7 °C
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