Jervis Bay Harbour Weather Forecast

    • 13
    • 18

    Rain

    • 9
    • 20

    Mostly sunny

    • 11
    • 20

    Shower or two

    • 12
    • 19

    Showers

    • 13
    • 21

    Shower or two

    • 12
    • 21

    Shower or two

    • 12
    • 20

    Shower or two

Today 19 May Illawarra

Cloudy. Very high chance of rain. Light winds becoming southwesterly 15 to 20 km/h in the morning. Overnight temperatures falling to between 10 and 15 with daytime temperatures reaching between 13 and 18.

Illawarra Coastal Waters

Port Hacking to Ulladulla
Wind
North to northwesterly 10 to 15 knots becoming variable about 10 knots before dawn then becoming southwesterly 15 to 25 knots in the early morning. Winds reaching up to 30 knots during the afternoon and evening.
Seas
Below 1 metre, increasing to 1 to 2 metres around midday, then increasing to 2.5 to 3 metres by early evening.
1st Swell
Northeasterly 2 metres, increasing to 2.5 to 3 metres during the morning.
Weather
Cloudy. Near 100% chance of rain. The chance of a thunderstorm offshore from the late morning.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Jervis Bay Harbour Temperature Statistics View More

May Temperature

Point Perpendicular (9km)

  • Lowest 8 May, 2026

    10.6 °C

  • Average May

    17.5 °C

  • Highest 2 May, 2026

    23.9 °C

Climate (2021–Present)

Point Perpendicular (9km)

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  • Average Low 2021–2026

    14.7 °C

  • Average 2021–2026

    17.5 °C

  • Average High 2021–2026

    20.8 °C
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