Dianas Beach Weather Forecast

    • 9
    • 19

    Showers increasing

    • 5
    • 20

    Sunny

    • 8
    • 20

    Mostly sunny

    • 12
    • 18

    Cloudy

    • 12
    • 21

    Shower or two

    • 15
    • 23

    Showers

    • 15
    • 26

    Possible shower

Today 15 Nov St Helens

Becoming cloudy. Very high chance of showers, most likely during this afternoon and early evening. Light winds becoming southeasterly 20 to 30 km/h in the middle of the day then tending southerly in the evening.

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
Southwesterly 15 to 25 knots turning southerly in the middle of the day. Winds reaching up to 30 knots in the evening.
Seas
Around 1 metre, increasing to 1.5 to 2.5 metres during the morning.
1st Swell
South to southwesterly 1 to 2 metres, decreasing to 1 to 1.5 metres during the morning, then tending southerly 1 to 2 metres around midday.
Weather
Partly cloudy. 70% chance of showers, with possible small hail during this afternoon and evening.
Weather Situation
A cold front crosses the state today shifting the flow southwesterly. A series of troughs in that southwesterly flow are expected to cross the south of Tasmania on Monday and Tuesday before a high pressure system establishes over Tasmania bringing settled conditions into the mid week.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Dianas Beach Temperature Statistics View More

November Temperature

St Helens Aerodrome (5 km)

  • Lowest 8 November, 2026

    6 °C

  • Average November

    14.3 °C

  • Highest 12 November, 2026

    22.7 °C

Climate (2021–2026)

St Helens Aerodrome (5 km)

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  • Average Low 2021–2026

    9.4 °C

  • Average 2021–2026

    13.5 °C

  • Average High 2021–2026

    18.4 °C
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