Saint Mary Bay Weather Forecast

    • 14
    • 33

    Clear

    • 20
    • 31

    Partly cloudy

    • 16
    • 29

    Cloudy

    • 17
    • 21

    Cloudy

    • 13
    • 21

    Partly cloudy

    • 12
    • 27

    Sunny

    • 17
    • 29

    Partly cloudy

Today 3 Dec West Coast

Mostly clear. Winds northeast to southeasterly 15 to 20 km/h.

Extreme Fire Danger Rating

Take action now to protect life and property

Upper West Coastal Waters

Fowlers Bay to Elliston
Wind
East to northeasterly about 10 knots.
Seas
Below 0.5 metres.
1st Swell
Southwesterly 1.5 metres.
Weather
Mostly clear.
Weather Situation
A ridge of high pressure extends over SA from the east, as a low pressure trough moves into the far west late this evening. The trough is expected to move eastwards during Thursday. A ridge of high pressure is then forecast to build over the Bight on Friday and a weak cold front will move across the southern coastal districts on Saturday. The high will slowly move eastwards on Sunday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Saint Mary Bay Temperature Statistics View More

December Temperature

Streaky Bay (45km)

  • Lowest 1 December, 2025

    7.9 °C

  • Average December

    17.7 °C

  • Highest 1 December, 2025

    21.4 °C

Climate (2020–Present)

Streaky Bay (45km)

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  • Average Low 2020–2025

    12 °C

  • Average 2020–2025

    16.4 °C

  • Average High 2020–2025

    23.4 °C
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