Semaphore Weather Forecast
- 9
- 17
Partly cloudy
- 9
- 17
Partly cloudy
- 9
- 15
Showers
- 7
- 14
Shower or two
- 6
- 14
Possible shower
- 8
- 15
Shower or two
- 7
- 15
Possible shower
Today 20 Jul Adelaide
Partly cloudy. Light winds.
Adelaide Metropolitan Waters
- Wind
- North to northeasterly below 10 knots.
- Seas
- Below 1 metre.
- 1st Swell
- West to southwesterly below 1 metre.
- Weather
- Partly cloudy.
- Weather Situation
- A high pressure system over Victoria extends a ridge over South Australia, with the ridge expected to weaken during Tuesday. A trough will develop in the west on Tuesday, ahead of a weak cold front that is expected to extend over southern parts during Wednesday. Another ridge will extend over the west of the state later Wednesday, with a high centre expected to build over the Bight Thursday and Friday.
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