Big Rocky Island Weather Forecast

    • 16
    • 26

    Possible shower

    • 11
    • 21

    Sunny

    • 11
    • 26

    Sunny day. Shower or two

    • 15
    • 24

    Shower or two then sunny

    • 10
    • 22

    Sunny

    • 10
    • 22

    Sunny

    • 11
    • 20

    Shower or two

Today 17 Sep Hunter

Partly cloudy. Slight chance of a shower. The chance of a thunderstorm in the morning and afternoon. Winds west to northwesterly 20 to 30 km/h tending west to southwesterly 15 to 20 km/h in the afternoon. Daytime maximum temperatures 22 to 27.

Hunter Coastal Waters

Seal Rocks to Broken Bay
Wind
Westerly 10 to 15 knots shifting southeasterly in the early afternoon.
Seas
Around 1 metre.
1st Swell
North to northeasterly 1 to 1.5 metres.
Weather
Partly cloudy. The chance of a thunderstorm north of Norah Head.
Weather Situation
A front and its associated trough crossing the state has brought a west to southwesterly change to southern and central coastal waters. The front moves away to the Tasman Sea and the trough continues crossing the northern coastal waters on Wednesday. Then, a ridge of high pressure will drift across the coastal waters midweek ahead of the second cold front that looks set to cross the coast on Saturday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Big Rocky Island Temperature Statistics View More

September Temperature

Williamtown RAAF Base (28km)

  • Lowest 1 September, 2025

    5.5 °C

  • Average September

    15.4 °C

  • Highest 8 September, 2025

    28.5 °C

Climate (2020–Present)

Williamtown RAAF Base (28km)

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  • Average Low 2020–2025

    13.3 °C

  • Average 2020–2025

    18 °C

  • Average High 2020–2025

    23.6 °C
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