Observation Island Weather Forecast

    • 29
    • 30

    Partly cloudy

    • 27
    • 29

    Windy

    • 25
    • 29

    Sunny

    • 26
    • 28

    Partly cloudy

    • 27
    • 29

    Shower

    • 27
    • 29

    Shower

    • 27
    • 29

    Cloudy

Today 21 Apr Kakadu National Park

Partly cloudy. Slight chance of a shower, becoming less likely later tonight. The chance of a thunderstorm north of Arnhem Highway. Winds northeast to southeasterly 15 to 20 km/h becoming light in the late evening.

Roper Groote Coast

Cape Arnhem to QLD-NT Border
Wind
East to southeasterly 15 to 25 knots, reaching up to 35 knots northeast of Groote Eylandt in the evening.
Seas
1.5 to 2 metres, increasing to 2 to 4 metres northeast of Groote Eylandt.
1st Swell
Easterly below 1 metre.
Weather
Partly cloudy. 90% chance of showers northeast of Groote Eylandt, 50% chance elsewhere. Heavy falls and damaging wind gusts possible north of Groote Eylandt. The chance of a thunderstorm north of Numbulwar.
Weather Situation
Tropical low (30U) will slowly move west-northwestwards across the northern Gulf of Carpentaria, passing to the north of Nhulunbuy this evening, before taking a more northwesterly track through the Arafura Sea from Tuesday.
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  • Temperature Forecast Bureau of Meteorology

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Observation Island Temperature Statistics View More

April Temperature

Centre Island (17km)

  • Lowest 13 April, 2025

    24.4 °C

  • Average April

    28.1 °C

  • Highest 1 April, 2025

    33 °C

Climate (2020–Present)

Centre Island (17km)

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  • Average Low 2020–2025

    24.5 °C

  • Average 2020–2025

    27.4 °C

  • Average High 2020–2025

    31.7 °C
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