Semaphore Weather Forecast
- 20
- 28
Partly cloudy
- 17
- 23
Shower or two. Possible storm
- 14
- 25
Partly cloudy
- 16
- 30
Partly cloudy
- 20
- 30
Possible shower
- 15
- 22
Showers
- 11
- 18
Showers
Today 19 Oct Adelaide
Partly cloudy. The chance of a thunderstorm. Winds northwesterly 15 to 20 km/h becoming light in the late afternoon.
Adelaide Metropolitan Waters
- Wind
- Variable below 10 knots.
- Seas
- Below 0.5 metres.
- 1st Swell
- West to southwesterly below 0.5 metres.
- Weather
- Partly cloudy. The chance of a thunderstorm.
- Weather Situation
- A trough of low pressure over central South Australia reaches southeastern parts later and lingers in the east, before weakening from Thursday. A slow moving high pressure system in the Tasman Sea re-establishes a ridge across southern parts from Wednesday. Another series of troughs move into western parts on Thursday and broadly across SA on Friday.
Semaphore Temperature Statistics View More
October Temperature
Parafield Airport (13 km)
Lowest 6 October, 2026
6.6 °CAverage October
17.1 °CHighest 11 October, 2026
31.1 °C
Climate (2021–2026)
Parafield Airport (13 km)
Average Low 2021–2026
11.3 °CAverage 2021–2026
17.2 °CAverage High 2021–2026
23.7 °C