Shoalhaven River - Numbaa Island Weather Forecast

    • 10
    • 19

    Possible shower

    • 9
    • 18

    Partly cloudy

    • 7
    • 20

    Mostly sunny

    • 8
    • 22

    Partly cloudy

    • 12
    • 20

    Shower or two

    • 11
    • 18

    Mostly sunny

    • 11
    • 16

    Partly cloudy

Today 23 Aug Illawarra

Partly cloudy. Medium chance of showers. Winds westerly 15 to 20 km/h turning south to southwesterly 20 to 30 km/h during the morning. Daytime maximum temperatures between 15 and 20.

Illawarra Coastal Waters

Port Hacking to Ulladulla
Wind
South to southwesterly 20 to 30 knots, reaching up to 35 knots offshore south of Point Perpendicular during the afternoon and evening.
Seas
1.5 to 2 metres, increasing to 2 to 3 metres around midday.
1st Swell
Southerly below 1 metre, increasing to 1 to 2 metres by early evening.
Weather
Partly cloudy. 80% chance of showers offshore, 50% chance elsewhere. 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.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Shoalhaven River - Numbaa Island Temperature Statistics View More

August Temperature

Nowra (RAN Air Station) (16km)

  • Lowest 18 August, 2025

    4 °C

  • Average August

    11.4 °C

  • Highest 5 August, 2025

    20.5 °C

Climate (2020–Present)

Nowra (RAN Air Station) (16km)

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  • Average Low 2020–2025

    12 °C

  • Average 2020–2025

    16.5 °C

  • Average High 2020–2025

    22.3 °C
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