Dianas Beach Weather Forecast

    • 11
    • 21

    Partly cloudy

    • 11
    • 19

    Showers increasing

    • 6
    • 14

    Shower or two

    • 6
    • 16

    Partly cloudy

    • 6
    • 19

    Sunny

    • 7
    • 19

    Partly cloudy

    • 7
    • 17

    Partly cloudy

Today 5 May St Helens

Partly cloudy. Slight chance of a shower. Light winds.

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
South to southwesterly 10 to 15 knots tending west to southwesterly in the evening then becoming variable below 10 knots in the late evening.
Seas
Around 1 metre.
1st Swell
Northeasterly 1.5 to 2 metres, decreasing to 1.5 metres later in the evening.
Weather
Mostly clear.
Weather Situation
A cold front approaches Tasmania from the west and is forecast to cross the state on Wednesday. In its wake, a cold southwesterly airstream will prevail on Thursday and Friday, before weakening on Saturday as a ridge of high pressure moves in from the west.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Dianas Beach Temperature Statistics View More

May Temperature

St Helens Aerodrome (5km)

  • Lowest 3 May, 2026

    11.3 °C

  • Average May

    16.2 °C

  • Highest 1 May, 2026

    24.9 °C

Climate (2021–Present)

St Helens Aerodrome (5km)

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  • Average Low 2021–2026

    9.3 °C

  • Average 2021–2026

    13.4 °C

  • Average High 2021–2026

    18.3 °C
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