Jervis Bay Harbour Weather Forecast

    • 17
    • 25

    Partly cloudy

    • 18
    • 27

    Partly cloudy

    • 17
    • 32

    Mostly sunny

    • 20
    • 35

    Mostly sunny

    • 20
    • 35

    Sunny

    • 22
    • 39

    Sunny

    • 18
    • 24

    Cloudy

Today 5 Jan Illawarra

Partly cloudy. Medium chance of showers. The chance of a thunderstorm early this evening, possibly severe with damaging winds, large hail and heavy rain which may lead to flash flooding inland. Winds east to southeasterly 15 to 25 km/h tending south to southeasterly 15 to 20 km/h in the late evening.

Illawarra Coastal Waters

Port Hacking to Ulladulla
Wind
Southerly about 10 knots increasing to 10 to 15 knots in the evening.
Seas
Below 1 metre.
1st Swell
Northeasterly below 1 metre.
Weather
Partly cloudy. The chance of a thunderstorm inshore.
Weather Situation
A trough brushing the north coast is bringing onshore south to southeasterly winds. Winds will gradually turn northeasterly from Tuesday onwards and continue freshening mid to late this week as a slow-moving high pressure system strengthens over the Tasman Sea while extending a ridge to the coastal areas.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Jervis Bay Harbour Temperature Statistics View More

January Temperature

Point Perpendicular (9km)

  • Lowest 1 January, 2026

    16.1 °C

  • Average January

    19.5 °C

  • Highest 3 January, 2026

    24.7 °C

Climate (2021–Present)

Point Perpendicular (9km)

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  • Average Low 2021–2026

    14.7 °C

  • Average 2021–2026

    17.4 °C

  • Average High 2021–2026

    20.7 °C
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