Dianas Beach Weather Forecast

    • 13
    • 20

    Shower or two

    • 10
    • 20

    Shower or two

    • 9
    • 19

    Showers increasing

    • 7
    • 13

    Shower or two

    • 5
    • 16

    Partly cloudy

    • 6
    • 20

    Sunny

    • 8
    • 18

    Sunny

Today 4 May St Helens

Partly cloudy. Medium chance of showers. Light winds becoming northwesterly 15 to 20 km/h in the middle of the day then becoming light in the evening.

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
Northwesterly 10 to 15 knots, reaching up to 20 knots offshore during the afternoon and evening.
Seas
1 to 2 metres, decreasing to 1 to 1.5 metres during the morning, then increasing to 1 to 2 metres during the afternoon.
1st Swell
Northeasterly 1.5 to 2.5 metres.
Weather
Partly cloudy. 70% chance of showers.
Weather Situation
A low pressure system will pass to the north today ahead of a narrow ridge that will extend over western Tasmania on Tuesday. Another cold front will cross Tasmania on Wednesday, with a colder southwesterly stream expected during Thursday.
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

    15.8 °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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