Jervis Bay Harbour Weather Forecast

    • 13
    • 22

    Partly cloudy

    • 13
    • 23

    Cloudy

    • 12
    • 25

    Partly cloudy

    • 11
    • 26

    Sunny

    • 14
    • 26

    Partly cloudy

    • 15
    • 25

    Possible shower

    • 16
    • 27

    Cloudy

Today 27 Dec Illawarra

Partly cloudy. Slight chance of a shower along the coastal fringe at night. Near zero chance of rain elsewhere. Winds south to southeasterly 15 to 25 km/h tending south to southwesterly 15 to 20 km/h in the late evening. Daytime maximum temperatures in the low to mid 20s.

Illawarra Coastal Waters

Port Hacking to Ulladulla
Wind
Southerly 15 to 25 knots.
Seas
1.5 metres, increasing to 1.5 to 2 metres offshore south of Point Perpendicular by early evening.
1st Swell
Southerly 1.5 to 2.5 metres.
Weather
Partly cloudy.
Weather Situation
Southerly winds are prevailing as a strong high pressure system near Tasmania extends a ridge over the coastal waters. Winds are forecast to remain southerly into the weekend, while gradually easing, as the high slowly moves southeast, entering the southern Tasman Sea by the weekend.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Jervis Bay Harbour Temperature Statistics View More

December Temperature

Point Perpendicular (9km)

  • Lowest 2 December, 2025

    10.3 °C

  • Average December

    20.3 °C

  • Highest 5 December, 2025

    33 °C

Climate (2020–Present)

Point Perpendicular (9km)

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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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