Semaphore Weather Forecast
- 9
- 17
Cloudy
- 9
- 15
Showers
- 7
- 14
Shower or two
- 7
- 14
Possible shower
- 8
- 15
Shower or two
- 7
- 15
Possible shower
- 8
- 16
Shower or two
Today 21 Jul Adelaide
Cloudy. Light winds.
Adelaide Metropolitan Waters
- Wind
- North to northwesterly below 10 knots.
- Seas
- Below 0.5 metres.
- 1st Swell
- West to southwesterly below 1 metre.
- Weather
- Cloudy.
- Weather Situation
- A trough crosses South Australia on Tuesday evening, followed by a series of weak cold fronts that cross the south of the State during Wednesday. A ridge of high pressure will build over the west of the State from later Wednesday, with the high centre expected to cross South Australia on Friday and Saturday.
Semaphore Temperature Statistics View More
July Temperature
Parafield Airport (13km)
Lowest 17 July, 2026
0.1 °CAverage July
11 °CHighest 18 July, 2026
18.9 °C
Climate (2021–2026)
Parafield Airport (13km)
Average Low 2021–2026
11.2 °CAverage 2021–2026
17.1 °CAverage High 2021–2026
23.6 °C