Decres Bay Weather Forecast
- 11
- 22
Sunny
- 7
- 20
Mostly sunny
- 9
- 19
Partly cloudy
- 5
- 20
Sunny
- 5
- 23
Sunny
- 9
- 27
Sunny
- 12
- 30
Sunny
Today 13 Sep West Coast
Mostly sunny. Slight chance of a shower south of Streaky Bay, near zero chance elsewhere. Winds west to southwesterly 20 to 30 km/h tending south to southwesterly in the early afternoon then becoming light in the evening. Daytime maximum temperatures in the low to mid 20s.
Upper West Coastal Waters
Fowlers Bay to Elliston- Wind
- Westerly 10 to 15 knots, reaching up to 20 knots south of Streaky Bay in the late morning and early afternoon. Winds turning southwesterly in the early afternoon.
- Seas
- 1 to 1.5 metres, decreasing below 1 metre by early evening.
- 1st Swell
- Southwesterly 1.5 metres, increasing to 1.5 to 2 metres around midday.
- Weather
- Partly cloudy.
- Weather Situation
- A trough will move across SA today ahead of a high pressure ridge that will build in the wake. A cold front will then slip across southern coasts late Monday and early Tuesday, before the high moves across waters to the south to be centred over Victoria by Thursday.
Decres Bay Temperature Statistics View More
September Temperature
Ceduna Airport (9km)
Lowest 6 September, 2026
2.7 °CAverage September
14 °CHighest 1 September, 2026
25.4 °C
Climate (2021–2026)
Ceduna Airport (9km)
Average Low 2021–2026
10.9 °CAverage 2021–2026
16.8 °CAverage High 2021–2026
23.7 °C