Saint Mary Bay Weather Forecast

    • 15
    • 22

    Cloudy

    • 13
    • 23

    Sunny

    • 13
    • 29

    Sunny

    • 18
    • 36

    Sunny

    • 21
    • 38

    Sunny

    • 22
    • 29

    Partly cloudy

    • 18
    • 27

    Partly cloudy

Today 14 Dec West Coast

Mostly clear. Winds south to southwesterly 25 to 35 km/h tending south to southeasterly 20 to 30 km/h during the afternoon and evening.

Upper West Coastal Waters

Fowlers Bay to Elliston
Wind
Southerly 15 to 20 knots tending southeasterly in the late evening.
Seas
Around 1 metre, increasing to 1 to 1.5 metres by early evening.
1st Swell
Southwesterly 1.5 to 2.5 metres.
Weather
Cloudy.
Weather Situation
A high pressure system in the Bight, maintains a ridge over SA as it slowly moves eastwards and out to the Tasman Sea by Wednesday. A trough of low pressure forecast to drift into the far northeast of SA late Wednesday, slowing moving south during Thursday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Saint Mary Bay Temperature Statistics View More

December Temperature

Streaky Bay (45km)

  • Lowest 7 December, 2025

    2.9 °C

  • Average December

    21.3 °C

  • Highest 11 December, 2025

    38.6 °C

Climate (2020–Present)

Streaky Bay (45km)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    12 °C

  • Average 2020–2025

    16.4 °C

  • Average High 2020–2025

    23.5 °C
Get WillyWeather+ to remove ads