Diamond Island Weather Forecast

    • 7
    • 19

    Sunny

    • 6
    • 16

    Sunny

    • 8
    • 20

    Partly cloudy

    • 12
    • 21

    Partly cloudy

    • 10
    • 16

    Shower or two

    • 7
    • 18

    Mostly sunny

    • 8
    • 19

    Partly cloudy

Today 11 Sep East Coast

Sunny. The chance of morning frost about higher ground. Winds westerly 15 to 25 km/h becoming light in the morning. Overnight temperatures falling to between 3 and 8 with daytime temperatures reaching between 16 and 21.

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
West to southwesterly 10 to 15 knots tending southeast to southwesterly in the early morning then becoming variable about 10 knots in the middle of the day.
Seas
Below 1 metre.
1st Swell
Southerly 1 to 2 metres inshore, increasing to 2 to 3 metres offshore.
Weather
Sunny.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Diamond Island Temperature Statistics View More

September Temperature

Bicheno (Council Depot) (2km)

  • Lowest 4 September, 2026

    4.5 °C

  • Average September

    12.6 °C

  • Highest 8 September, 2026

    19.5 °C

Climate (2021–2026)

Bicheno (Council Depot) (2km)

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  • Average Low 2021–2026

    10.4 °C

  • Average 2021–2026

    14.3 °C

  • Average High 2021–2026

    18.2 °C
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