Observation Island Weather Forecast

    • 20
    • 22

    Sunny

    • 19
    • 23

    Sunny

    • 19
    • 23

    Sunny

    • 19
    • 24

    Sunny

    • 19
    • 24

    Partly cloudy

    • 21
    • 25

    Partly cloudy

    • 22
    • 24

    Partly cloudy

Today 18 Jul Kakadu National Park

Clear. The chance of smoke haze north of Arnhem Highway. Winds southeasterly 15 to 25 km/h becoming light in the evening then becoming southeasterly 15 to 20 km/h in the late evening.

Roper Groote Coast

Cape Arnhem to QLD-NT Border
Wind
Southeasterly 15 to 20 knots.
Seas
1 to 1.5 metres.
1st Swell
East to southeasterly below 1 metre.
Weather
Mostly clear.
Weather Situation
A ridge of high pressure across the continent directs an east to southeasterly flow over coastal waters.
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  • Temperature Forecast Bureau of Meteorology

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Observation Island Temperature Statistics View More

July Temperature

Centre Island (17km)

  • Lowest 17 July, 2026

    18.8 °C

  • Average July

    23.9 °C

  • Highest 9 July, 2026

    29.5 °C

Climate (2021–2026)

Centre Island (17km)

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  • Average Low 2021–2026

    24.5 °C

  • Average 2021–2026

    27.4 °C

  • Average High 2021–2026

    31.5 °C
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