Swansea Channel - Coon Island Weather Forecast

    • 7
    • 21

    Partly cloudy

    • 8
    • 19

    Sunny

    • 6
    • 21

    Sunny

    • 6
    • 22

    Sunny

    • 9
    • 24

    Partly cloudy

    • 8
    • 21

    Mostly sunny

    • 8
    • 19

    Mostly sunny

Today 23 Aug Newcastle

Mostly sunny morning. Slight chance of a shower most likely in the afternoon. Winds west to northwesterly 15 to 20 km/h turning south to southwesterly 15 to 25 km/h in the early afternoon.

Hunter Coastal Waters

Seal Rocks to Broken Bay
Wind
Westerly 15 to 20 knots tending southwesterly 20 to 25 knots in the middle of the day. Winds reaching up to 30 knots offshore south of Port Stephens during the afternoon and evening.
Seas
1 to 1.5 metres, increasing to 1.5 to 2 metres during the afternoon.
1st Swell
East to northeasterly 1.5 to 2.5 metres, decreasing to 1.5 metres later in the evening.
Weather
Partly cloudy. 60% chance of showers. The chance of a thunderstorm.
Weather Situation
A trough lies off the NSW coast, bringing northwesterly to northeasterly winds to NSW waters. The trough is set to move east over the Tasman Sea while a ridge forms along the NSW coast in its wake, bringing fresh to strong southwesterly winds. This ridge will persist through early next week, before winds turn north to northwesterly ahead of a cold front set to cross coastal waters mid next week.
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  • Temperature Forecast Bureau of Meteorology

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Swansea Channel - Coon Island Temperature Statistics View More

August Temperature

Lake Macquarie (Cooranbong) (16km)

  • Lowest 17 August, 2025

    2.9 °C

  • Average August

    12 °C

  • Highest 5 August, 2025

    22.4 °C

Climate (2020–Present)

Lake Macquarie (Cooranbong) (16km)

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  • Average Low 2020–2025

    11.7 °C

  • Average 2020–2025

    17.1 °C

  • Average High 2020–2025

    23.7 °C
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