Dianas Beach Weather Forecast

    • 15
    • 21

    Possible morning shower

    • 12
    • 23

    Showers developing

    • 11
    • 19

    Becoming windy. Partly cloudy

    • 11
    • 20

    Partly cloudy

    • 13
    • 24

    Partly cloudy

    • 16
    • 23

    Partly cloudy

    • 14
    • 21

    Partly cloudy

Today 20 Jan St Helens

Partly cloudy. Medium chance of showers in the morning. Light winds.

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
East to northeasterly 10 to 15 knots decreasing to about 10 knots in the morning.
Seas
Below 1 metre.
1st Swell
Easterly 1.5 metres.
Weather
Partly cloudy.
Weather Situation
A high pressure system centred over the southern Tasman Sea will persist early in the week. A cold front will move across the state from the west on Wednesday then another high pressure ridge will extend across later in the week.
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

    17.3 °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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