Dianas Basin Weather Forecast

    • 7
    • 16

    Shower or two

    • 7
    • 18

    Partly cloudy

    • 10
    • 22

    Mostly sunny

    • 14
    • 27

    Becoming windy. Mostly sunny

    • 11
    • 21

    Partly cloudy

    • 11
    • 21

    Partly cloudy

    • 8
    • 20

    Possible shower

Today 1 Dec St Helens

Partly cloudy. Medium chance of showers, most likely during this afternoon and 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 below 10 knots becoming south to southeasterly 10 to 15 knots in the middle of the day then tending south to southwesterly in the late evening.
Seas
Below 1 metre.
1st Swell
Southerly 1 to 1.5 metres, decreasing to around 1 metre during the morning.
Weather
Partly cloudy. 60% chance of showers. The chance of a thunderstorm during this afternoon and early evening.
Weather Situation
A cold front with an associated low pressure system is currently moving over the north of the state, before a ridge of high pressure builds over Tasmania during Tuesday. Northwesterly flow will strengthen over the state on Wednesday ahead of another cold front forecast to cross the state on Thursday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Dianas Basin Temperature Statistics View More

December Temperature

St Helens Aerodrome (5km)

  • Lowest

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  • Average December

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  • Highest

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Climate (2020–Present)

St Helens Aerodrome (5km)

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  • Average Low 2020–2025

    9.3 °C

  • Average 2020–2025

    13.3 °C

  • Average High 2020–2025

    18.2 °C
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