Decres Bay Weather Forecast

    • 8
    • 30

    Mostly clear

    • 15
    • 29

    Partly cloudy

    • 11
    • 26

    Partly cloudy

    • 12
    • 29

    Partly cloudy

    • 15
    • 31

    Mostly sunny

    • 17
    • 33

    Possible late shower

    • 15
    • 26

    Showers

Today 23 Sep West Coast

Partly cloudy. Medium chance of showers west of Nullarbor, most likely in the evening. Near zero chance of rain elsewhere. Winds north to northeasterly 20 to 30 km/h tending southeast to southwesterly 15 to 20 km/h in the late afternoon then tending northeast to southeasterly in the evening. Daytime maximum temperatures 28 to 34.

Upper West Coastal Waters

Fowlers Bay to Elliston
Wind
Northeasterly 10 to 15 knots becoming variable about 10 knots in the middle of the day then becoming east to southeasterly 10 to 15 knots in the late afternoon.
Seas
Below 1 metre.
1st Swell
Southwesterly 2 to 2.5 metres.
Weather
Partly cloudy.
Weather Situation
A high pressure system centred over the Tasman Sea extends a ridge over SA ahead of a low pressure trough that is expected to move over the far west of SA during Wednesday. The trough will slip southeastwards over southern coasts during Thursday and Friday, before being confined to the west over the weekend.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Decres Bay Temperature Statistics View More

September Temperature

Ceduna Airport (9km)

  • Lowest 17 September, 2026

    1.8 °C

  • Average September

    14.6 °C

  • Highest 19 September, 2026

    32.3 °C

Climate (2021–2026)

Ceduna Airport (9km)

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  • Average Low 2021–2026

    10.9 °C

  • Average 2021–2026

    16.8 °C

  • Average High 2021–2026

    23.7 °C
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