Dianas Basin Weather Forecast

    • 15
    • 23

    Shower or two

    • 15
    • 25

    Shower or two

    • 14
    • 20

    Showers increasing

    • 9
    • 17

    Shower or two

    • 8
    • 20

    Partly cloudy

    • 10
    • 21

    Mostly sunny

    • 11
    • 21

    Partly cloudy

Today 24 Mar St Helens

Cloudy. Medium chance of showers, most likely this evening. The chance of a thunderstorm during this afternoon and early evening. Light winds.

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
Variable about 10 knots becoming north to northeasterly 10 to 15 knots in the evening.
Seas
Below 1 metre.
1st Swell
Southerly around 1 metre, increasing to 1 to 1.5 metres during the morning.
Weather
Partly cloudy. 60% chance of showers. The chance of a thunderstorm during this afternoon and evening.
Weather Situation
A weak ridge of high pressure lies to the east of the state, and another to the south. A cold front is expected to approach the west during Wednesday, crossing the state early Thursday, bringing with it a fresh southerly flow during Thursday as a high pressure system lies well to the west of Tasmania.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Dianas Basin Temperature Statistics View More

March Temperature

St Helens Aerodrome (5km)

  • Lowest 13 March, 2026

    6.8 °C

  • Average March

    17 °C

  • Highest 20 March, 2026

    25.6 °C

Climate (2021–Present)

St Helens Aerodrome (5km)

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  • Average Low 2021–2026

    9.3 °C

  • Average 2021–2026

    13.3 °C

  • Average High 2021–2026

    18.2 °C
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