Jervis Bay Weather Forecast

    • 11
    • 25

    Mostly sunny

    • 14
    • 25

    Shower or two

    • 16
    • 22

    Possible morning shower

    • 14
    • 25

    Cloudy

    • 15
    • 27

    Partly cloudy

    • 17
    • 29

    Possible shower

    • 19
    • 28

    Shower or two

Today 30 Dec Illawarra

Mostly sunny. Winds east to northeasterly 15 to 20 km/h becoming light in the evening. Daytime maximum temperatures 24 to 30.

Illawarra Coastal Waters

Port Hacking to Ulladulla
Wind
Variable about 10 knots becoming east to northeasterly 10 to 15 knots in the early afternoon then decreasing to about 10 knots in the evening.
Seas
Below 1 metre.
1st Swell
Southeasterly 1.5 metres.
Weather
Mostly sunny.
Weather Situation
South to southeasterly winds are gradually turning east to northeast as a high pressure ridge over the coastal waters is weakening. Then a trough will brush the coastal waters midweek, bringing a surge of fresh southerly winds along the coast, and this will be followed by another ridge extending from a high passing to the south of the state.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Jervis Bay Temperature Statistics View More

December Temperature

Point Perpendicular (8km)

  • Lowest 2 December, 2025

    10.3 °C

  • Average December

    19.9 °C

  • Highest 5 December, 2025

    33 °C

Climate (2020–Present)

Point Perpendicular (8km)

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  • Average Low 2020–2025

    14.7 °C

  • Average 2020–2025

    17.4 °C

  • Average High 2020–2025

    20.7 °C
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