Boondelbah Island Weather Forecast

    • 15
    • 22

    Shower or two. Becoming windy

    • 15
    • 24

    Partly cloudy

    • 14
    • 27

    Sunny

    • 13
    • 30

    Sunny

    • 15
    • 21

    Shower or two

    • 13
    • 21

    Possible shower

    • 11
    • 22

    Cloud clearing

Today 23 Sep Hunter

Partly cloudy. Medium chance of showers, most likely in the afternoon and evening. The chance of a thunderstorm in the afternoon and evening. Winds northeast to southeasterly 15 to 20 km/h becoming light in the early morning then becoming northeast to southeasterly 15 to 25 km/h in the morning. Overnight temperatures falling to between 9 and 14 with daytime temperatures reaching 22 to 27.

Hunter Coastal Waters

Seal Rocks to Broken Bay
Wind
Northeasterly 15 to 25 knots.
Seas
1.5 metres, increasing to 1.5 to 2 metres during the morning.
1st Swell
Southerly 1.5 to 2.5 metres.
Weather
Cloudy. 60% chance of showers.
Weather Situation
Easterly winds lie over the coastal waters. A high pressure system is slipping to the south and will enter the Tasman Sea during today, turning the winds northeasterly and then freshen the winds along the southern and central coastal waters. A southerly change is forecast to move over the coastal waters from Saturday, tracking north over the weekend.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Boondelbah Island Temperature Statistics View More

September Temperature

Williamtown RAAF Base (37km)

  • Lowest 9 September, 2026

    4.4 °C

  • Average September

    17.1 °C

  • Highest 21 September, 2026

    35.4 °C

Climate (2021–2026)

Williamtown RAAF Base (37km)

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  • Average Low 2021–2026

    13.5 °C

  • Average 2021–2026

    18.2 °C

  • Average High 2021–2026

    24 °C
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