Dianas Basin Weather Forecast

    • 13
    • 26

    Mostly clear

    • 13
    • 22

    Sunny

    • 15
    • 29

    Showers increasing

    • 11
    • 21

    Sunny

    • 11
    • 24

    Shower or two

    • 13
    • 20

    Possible shower

    • 11
    • 19

    Cloudy

Today 20 Feb St Helens

Mostly clear. Winds northwesterly 20 to 25 km/h.

Upper East Coastal Waters

St Helens Point to Wineglass Bay
Wind
Northwesterly 15 to 20 knots, reaching up to 30 knots offshore.
Seas
1 to 1.5 metres, increasing to 2 to 2.5 metres offshore.
1st Swell
Southerly below 1 metre inshore, increasing to 1 to 1.5 metres offshore.
Weather
Clear.
Weather Situation
A weak cold front approaches and crosses the south of the state late Friday, clearing to the east by early Saturday as a high pressure system is expected to quickly move over the state during Saturday. A strong cold front approaches from the west on Sunday, expected to cross Tasmania during Sunday afternoon followed by another high pressure system to move over from the west on Monday. The high is expected to move over the Tasman Sea on Tuesday as a trough and associated cold front approach the west of Tasmania.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Dianas Basin Temperature Statistics View More

February Temperature

St Helens Aerodrome (5km)

  • Lowest 13 February, 2026

    8.3 °C
  • Average February

    17.3 °C
  • Highest 4 February, 2026

    29.4 °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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