Semaphore Weather Forecast
- 12
- 17
Possible shower
- 11
- 20
Showers. Windy
- 13
- 18
Showers. Windy
- 12
- 17
Showers
- 10
- 16
Showers
- 10
- 17
Showers easing
- 13
- 18
Shower or two
Today 31 May Adelaide
Partly cloudy. Medium chance of showers, most likely later tonight. Light winds becoming north to northeasterly 15 to 20 km/h in the late evening.
Adelaide Metropolitan Waters
- Wind
- Variable below 10 knots becoming northerly 10 to 15 knots in the evening.
- Seas
- Below 1 metre.
- 1st Swell
- West to southwesterly below 0.5 metres.
- Weather
- Partly cloudy. 50% chance of showers.
- Weather Situation
- A weak high pressure system moves into the eastern states overnight. A significant low pressure system moves over waters to the south of SA on Monday and Tuesday reaching western Bass Strait Tuesday afternoon. A another low pressure moves over waters to the south on Wednesday. A ridge of high pressure develops over western and northern parts as a series of troughs and fronts move over the south later in the week.
Semaphore Temperature Statistics View More
May Temperature
Parafield Airport (13km)
Lowest 10 May, 2026
6.2 °CAverage May
15.2 °CHighest 1 May, 2026
31 °C
Climate (2021–Present)
Parafield Airport (13km)
Average Low 2021–2026
11.2 °CAverage 2021–2026
17.1 °CAverage High 2021–2026
23.6 °C