Diamond Island Weather Forecast

    • 11
    • 15

    Cloudy

    • 11
    • 18

    Cloudy

    • 10
    • 20

    Partly cloudy

    • 12
    • 20

    Partly cloudy

    • 13
    • 24

    Mostly sunny

    • 15
    • 26

    Partly cloudy

    • 15
    • 23

    Partly cloudy

Today 27 Mar East Coast

Cloudy. Winds southerly 25 to 40 km/h decreasing to 20 to 30 km/h in the evening then turning southwesterly 15 to 20 km/h in the late evening. Daytime maximum temperatures between 11 and 15.

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
Southerly 20 to 30 knots.
Seas
2.5 to 3 metres.
1st Swell
Southerly 1 to 1.5 metres inshore, increasing to 1.5 to 2.5 metres offshore.
Weather
Cloudy. 50% chance of showers offshore, near zero chance elsewhere.
Weather Situation
A low pressure system continues to deepen in the Tasman Sea, directing a fresh southerly flow over Tasmania today. A weak warm front will cross this evening, then a ridge of high pressure will extend over the state from the west during the weekend, with the high centre expected to move over Tasmania on Monday. A warmer north to northwesterly airstream will then develop over the state on Tuesday as the ridge moves over the Tasman Sea and a low pressure system and associated front approach from the west.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Diamond Island Temperature Statistics View More

March Temperature

Bicheno (Council Depot) (2km)

  • Lowest 13 March, 2026

    10 °C

  • Average March

    17.1 °C

  • Highest 5 March, 2026

    28 °C

Climate (2021–Present)

Bicheno (Council Depot) (2km)

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  • Average Low 2021–2026

    10.3 °C

  • Average 2021–2026

    14.2 °C

  • Average High 2021–2026

    18.1 °C
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