Dianas Beach Weather Forecast

    • 11
    • 23

    Partly cloudy

    • 15
    • 24

    Partly cloudy

    • 15
    • 20

    Cloudy

    • 13
    • 23

    Partly cloudy

    • 14
    • 24

    Possible shower

    • 15
    • 23

    Shower or two

    • 10
    • 20

    Mostly sunny

Today 27 Jan St Helens

Partly cloudy. Light winds becoming northerly 20 to 30 km/h in the morning then tending northwesterly 15 to 20 km/h in the late evening.

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
Northerly 15 to 25 knots, reaching up to 30 knots during the afternoon and evening.
Seas
1 to 1.5 metres, increasing to 1.5 to 2.5 metres around midday.
1st Swell
Southeasterly 1.5 to 2 metres, decreasing to 1 to 1.5 metres during the morning.
Weather
Partly cloudy.
Weather Situation
A high pressure system over Tasmania will move over the Tasman Sea during today, ahead of a low pressure trough and associated cold front approaching from the west. The trough is expected to cross the state during this afternoon and evening, with associated cold front to cross the south of Tasmania late. On Wednesday a high pressure system south of the Bight is forecast to extend a ridge over the state, with the high centre to cross Tasmania on Thursday and linger over the Tasman Sea into Friday as another high centre builds over the Bight.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Dianas Beach Temperature Statistics View More

January Temperature

St Helens Aerodrome (5km)

  • Lowest 12 January, 2026

    9.4 °C

  • Average January

    16.9 °C

  • Highest 7 January, 2026

    33.6 °C

Climate (2021–Present)

St Helens Aerodrome (5km)

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  • Average Low 2021–2026

    9.3 °C

  • Average 2021–2026

    13.3 °C

  • Average High 2021–2026

    18.2 °C
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