Semaphore Weather Forecast
- 7
- 21
Clear
- 12
- 24
Sunny
- 15
- 22
Showers
- 12
- 18
Shower or two
- 9
- 17
Cloudy
- 7
- 18
Partly cloudy
- 7
- 20
Sunny
Today 11 Sep Adelaide
Clear. Light winds.
Adelaide Metropolitan Waters
- Wind
- Variable below 10 knots.
- Seas
- Below 0.5 metres.
- 1st Swell
- West to southwesterly below 0.5 metres.
- Weather
- 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.
Semaphore Temperature Statistics View More
September Temperature
Parafield Airport (13km)
Lowest 7 September, 2026
4.5 °CAverage September
13.1 °CHighest 1 September, 2026
22 °C
Climate (2021–2026)
Parafield Airport (13km)
Average Low 2021–2026
11.3 °CAverage 2021–2026
17.1 °CAverage High 2021–2026
23.6 °C