Boondelbah Island Weather Forecast

    • 9
    • 23

    Mostly sunny

    • 9
    • 21

    Shower or two

    • 11
    • 21

    Partly cloudy

    • 10
    • 20

    Partly cloudy

    • 11
    • 24

    Partly cloudy

    • 12
    • 23

    Showers

    • 12
    • 21

    Shower or two

Today 20 Aug Hunter

Partly cloudy. Patchy morning fog. Light winds becoming northwesterly 15 to 20 km/h in the middle of the day then becoming light in the early afternoon. Overnight temperatures falling to between 5 and 8 with daytime temperatures reaching between 19 and 23.

Hunter Coastal Waters

Seal Rocks to Broken Bay
Wind
Northerly 15 to 20 knots.
Seas
1 to 1.5 metres.
1st Swell
Southeasterly around 1 metre.
Weather
Mostly sunny.
Weather Situation
A high pressure system over Tasman Sea is directing onshore east to northeasterly winds along the NSW coast. North to northeasterly winds will strengthen and extend north during today as a trough approaches from the west. Winds easing and shifting west to southwesterly from Friday as a series of cold fronts brush the south, before another high pressure system moves into the Tasman Sea later in the weekend.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Boondelbah Island Temperature Statistics View More

August Temperature

Williamtown RAAF Base (37km)

  • Lowest 7 August, 2026

    2.7 °C

  • Average August

    12.2 °C

  • Highest 11 August, 2026

    21.4 °C

Climate (2021–2026)

Williamtown RAAF Base (37km)

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  • Average Low 2021–2026

    13.4 °C

  • Average 2021–2026

    18.2 °C

  • Average High 2021–2026

    24 °C
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