Coweelunga Bay Weather Forecast
- 8
- 19
Partly cloudy
- 9
- 20
Partly cloudy
- 14
- 19
Shower
- 11
- 17
Shower
- 9
- 15
Cloudy
- 8
- 15
Partly cloudy
- 7
- 17
Sunny
Today 11 Sep Mount Lofty Ranges
Sunny. Winds east to northeasterly 15 to 20 km/h becoming light in the middle of the day. Daytime maximum temperatures around 18.
Investigator Strait Coastal Waters
- Wind
- East to southeasterly about 10 knots.
- Seas
- Below 1 metre.
- 1st Swell
- West to southwesterly below 1 metre, increasing to 1 to 1.5 metres through the Backstairs Passage.
- Weather
- Mostly clear.
- Weather Situation
- A high pressure system east of SA extends a ridge across much of the state, as a low pressure trough over the interior of WA weakens overnight. Another 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.
Coweelunga Bay Temperature Statistics View More
September Temperature
Parawa West (Second Valley Forest) (23km)
Lowest 8 September, 2026
5.2 °CAverage September
10.5 °CHighest 1 September, 2026
16.6 °C
Climate (2021–2026)
Parawa West (Second Valley Forest) (23km)
Average Low 2021–2026
10.5 °CAverage 2021–2026
13.5 °CAverage High 2021–2026
17.7 °C