Dianas Beach Weather Forecast

    • 5
    • 15

    Mostly sunny

    • 5
    • 15

    Shower or two

    • 7
    • 13

    Showers easing

    • 8
    • 15

    Showers

    • 5
    • 13

    Shower or two

    • 4
    • 15

    Mostly sunny

    • 5
    • 16

    Mostly sunny

Today 10 Jul St Helens

The chance of fog in the late morning. Mostly sunny afternoon. Light winds.

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
Northwesterly 10 to 15 knots, reaching up to 20 knots offshore in the late evening.
Seas
Around 1 metre.
1st Swell
Southerly below 1 metre inshore, increasing to 1 to 1.5 metres offshore.
Weather
Mostly sunny.
Weather Situation
A high pressure system slowly moves away to the east, extending a ridge over Tasmania. A northwesterly airstream will develop over the state today, as a series of cold fronts slowly approach from the west. The first front is forecast to cross Tasmania late Saturday, with a fresh westerly flow to follow on Sunday, before a second cold front is expected on Monday.
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 5 July, 2026

    4.2 °C

  • Average July

    9.5 °C

  • Highest 1 July, 2026

    16.7 °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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