Thirroul Beach Weather Forecast

    • 18
    • 23

    Possible shower

    • 17
    • 23

    Mostly sunny

    • 17
    • 22

    Shower or two

    • 17
    • 22

    Cloudy

    • 18
    • 27

    Possible late storm

    • 20
    • 35

    Mostly sunny

    • 20
    • 28

    Partly cloudy

Today 20 Jan Wollongong

Partly cloudy. Medium chance of showers, becoming less likely in the late afternoon and evening. Winds southerly 15 to 20 km/h tending southeasterly in the middle of the day then becoming light in the late evening.

Illawarra Coastal Waters

Port Hacking to Ulladulla
Wind
Southeasterly 10 to 15 knots decreasing to about 10 knots in the late evening.
Seas
Below 1 metre.
1st Swell
Southeasterly 1.5 to 2 metres, tending easterly 1.5 to 2 metres around midday, then tending southeasterly 2 metres during the afternoon.
Weather
Mostly sunny.
Weather Situation
A ridge lies over the NSW coast bringing east to southeasterly winds to the NSW coast. This ridge will persist along the coast through Wednesday as winds gradually shift southerly. An inland trough will move over the northern part of the coast on Thursday before the ridge re-establishes itself along the coast Friday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Thirroul Beach Temperature Statistics View More

January Temperature

Bellambi (5km)

  • Lowest 1 January, 2026

    16.3 °C

  • Average January

    21.5 °C

  • Highest 10 January, 2026

    41.9 °C

Climate (2021–Present)

Bellambi (5km)

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  • Average Low 2021–2026

    15 °C

  • Average 2021–2026

    18 °C

  • Average High 2021–2026

    21.8 °C
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