Dianas Basin Weather Forecast

    • 14
    • 19

    Possible shower

    • 14
    • 19

    Shower or two

    • 15
    • 20

    Shower or two

    • 15
    • 21

    Shower or two

    • 17
    • 22

    Shower or two

    • 15
    • 23

    Shower or two

    • 15
    • 21

    Cloudy

Today 16 Jan St Helens

Cloudy. Slight chance of a shower. Winds southeasterly 20 to 30 km/h.

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
Southeasterly 15 to 20 knots.
Seas
1 to 1.5 metres.
1st Swell
Southerly below 1 metre inshore, increasing to 1 to 1.5 metres offshore.
Weather
Cloudy.
Weather Situation
A high pressure system west of Tasmania extends a persistent ridge across the state. This high will move south of Tasmania today then into the southern Tasman Sea on the weekend, lingering there until early next week.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Dianas Basin Temperature Statistics View More

January Temperature

St Helens Aerodrome (5km)

  • Lowest 12 January, 2026

    9.4 °C

  • Average January

    17.6 °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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