Dianas Beach Weather Forecast

    • 9
    • 15

    Partly cloudy

    • 5
    • 16

    Partly cloudy

    • 8
    • 16

    Possible shower

    • 10
    • 15

    Showers

    • 5
    • 13

    Partly cloudy

    • 5
    • 14

    Partly cloudy

    • 4
    • 15

    Sunny

Today 25 Jul St Helens

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

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
West to southwesterly 10 to 15 knots, reaching up to 20 knots offshore in the late morning.
Seas
1 to 2 metres, decreasing to 1 metre during the afternoon.
1st Swell
Southerly 1 to 2 metres inshore, increasing to 2 to 3 metres offshore.
Weather
Partly cloudy.
Weather Situation
A westerly airstream is expected to continue over Tasmania into the new week with a series of fronts and troughs to pass over the state. A low pressure centre and associated cold front slowly approach from the west, crossing Tasmania on Tuesday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Dianas Beach Temperature Statistics View More

July Temperature

St Helens Aerodrome (5km)

  • Lowest 24 July, 2026

    1.3 °C

  • Average July

    9.6 °C

  • Highest 19 July, 2026

    17.3 °C

Climate (2021–2026)

St Helens Aerodrome (5km)

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  • Average Low 2021–2026

    9.4 °C

  • Average 2021–2026

    13.4 °C

  • Average High 2021–2026

    18.3 °C
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