Brentwood Weather Forecast

    • 9
    • 22

    Mostly sunny

    • 13
    • 20

    Showers easing

    • 11
    • 18

    Cloudy

    • 7
    • 16

    Cloudy

    • 7
    • 16

    Partly cloudy

    • 5
    • 18

    Sunny

    • 8
    • 22

    Sunny

Today 12 Sep Yorke Peninsula

Mostly sunny. Winds north to northeasterly 15 to 20 km/h becoming light in the late afternoon then becoming northeasterly 15 to 25 km/h in the evening. Daytime maximum temperatures in the low to mid 20s.

Spencer Gulf Coastal Waters

Wind
Northeasterly 10 to 15 knots turning northerly in the late evening. Winds reaching up to 20 knots near the Yorke Peninsula coast in the late evening.
Seas
Below 1 metre.
1st Swell
South to southwesterly around 1 metre, increasing to 1 to 2 metres south of Cowell to Wallaroo.
Weather
Mostly sunny.
Weather Situation
A trough will approach from the west late on Saturday, move across SA on Sunday with a ridge then extending into the state from a high located southwest of WA. An upper level disturbance will move over the far west on Monday, and a cold front will slip across southern coasts later in the day and early Tuesday. The high will then move across waters to the south throughout the week.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Brentwood Temperature Statistics View More

September Temperature

Edithburgh (38km)

  • Lowest 1 September, 2026

    6.7 °C

  • Average September

    13.2 °C

  • Highest 1 September, 2026

    21 °C

Climate (2021–2026)

Edithburgh (38km)

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  • Average Low 2021–2026

    12.3 °C

  • Average 2021–2026

    16 °C

  • Average High 2021–2026

    20.6 °C
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