James Cook Island Weather Forecast

    • 16
    • 33

    Windy. Mostly sunny

    • 15
    • 22

    Sunny

    • 14
    • 20

    Shower or two

    • 14
    • 18

    Partly cloudy

    • 12
    • 19

    Possible shower

    • 13
    • 17

    Partly cloudy

    • 12
    • 19

    Mostly sunny

Today 5 Sep Sydney

Partly cloudy. The chance of smoke haze this morning, mainly in the west. Slight chance of a shower late this afternoon and evening. Winds north to northwesterly 25 to 40 km/h increasing to 50 km/h before turning westerly 15 to 25 km/h in the evening.

Extreme Fire Danger Rating

Take action now to protect life and property

Sydney Enclosed Waters

Sydney Harbour, Pittwater and Botany Bay
Wind
North to northwesterly 15 to 25 knots increasing to 30 knots before tending west to northwesterly 15 to 25 knots in the early afternoon.
Seas
Below 0.5 metres.
Weather
Mostly sunny.
Weather Situation
North to northwesterly winds over Local Waters ahead of a vigorous cold front crossing Sydney Waters late this evening. Winds turning westerly in behind the front before tending southwesterly to southerly as a high pressure ridge begins to form over the NSW coast. The ridge will persist into the new week.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

James Cook Island Temperature Statistics View More

September Temperature

Sydney Airport (9km)

  • Lowest 1 September, 2026

    11.5 °C

  • Average September

    20.2 °C

  • Highest 2 September, 2026

    28.9 °C

Climate (2021–2026)

Sydney Airport (9km)

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  • Average Low 2021–2026

    14.9 °C

  • Average 2021–2026

    18.8 °C

  • Average High 2021–2026

    23.5 °C
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