Saint Mary Bay Weather Forecast

    • 15
    • 22

    Cloudy

    • 13
    • 23

    Sunny

    • 13
    • 30

    Sunny

    • 18
    • 36

    Sunny

    • 21
    • 37

    Sunny

    • 21
    • 29

    Cloudy

    • 19
    • 27

    Partly cloudy

Today 14 Dec West Coast

Sunny. Winds southerly 15 to 20 km/h becoming light in the early morning then becoming southeast to southwesterly 25 to 35 km/h in the morning. Overnight temperatures falling to around 12 with daytime temperatures reaching 24 to 30.

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 during the afternoon.
1st Swell
Southwesterly 1.5 metres, increasing to 1.5 to 2.5 metres around midday.
Weather
Partly cloudy.
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