Dianas Basin Weather Forecast

    • 5
    • 15

    Mostly sunny

    • 5
    • 15

    Rain increasing

    • 6
    • 13

    Showers increasing

    • 6
    • 13

    Shower or two

    • 3
    • 15

    Mostly sunny

    • 3
    • 15

    Shower or two

    • 7
    • 13

    Showers

Today 7 Jul St Helens

Mostly sunny. Light winds.

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
Variable about 10 knots.
Seas
Below 1 metre.
1st Swell
Northeasterly 1.5 metres, decreasing to around 1 metre during the afternoon.
Weather
Partly cloudy.
Weather Situation
A ridge of high pressure will persist over Tasmania today. Tomorrow a cold front is forecast to cross the state, ahead of a weaker front to cross the state on Wednesday evening. A southwesterly flow is expected to develop over Tasmania on Thursday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Dianas Basin Temperature Statistics View More

July Temperature

St Helens Aerodrome (5km)

  • Lowest 1 July, 2025

    1.7 °C

  • Average July

    8.7 °C

  • Highest 5 July, 2025

    15.1 °C

Climate (2020–Present)

St Helens Aerodrome (5km)

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  • Average Low 2020–2025

    9.4 °C

  • Average 2020–2025

    13.3 °C

  • Average High 2020–2025

    18.2 °C
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