Semaphore Weather Forecast
- 15
- 28
Mostly sunny
- 19
- 28
Partly cloudy
- 18
- 29
Partly cloudy
- 19
- 26
Showers
- 11
- 17
Showers
- 11
- 18
Showers
- 10
- 19
Shower or two
Today 29 Apr Adelaide
Mostly sunny. Winds northeasterly 15 to 25 km/h becoming light in the late afternoon.
Adelaide Metropolitan Waters
- Wind
- North to northeasterly below 10 knots becoming northwesterly in the early afternoon then becoming east to northeasterly in the late afternoon.
- Seas
- Below 0.5 metres.
- 1st Swell
- West to southwesterly below 0.5 metres.
- Weather
- Mostly sunny.
- Weather Situation
- A strong high pressure system over the Tasman Sea will maintain a ridge across South Australia through to Friday. Northerly winds freshen on Friday ahead of a trough that is forecast to move across the far west Friday afternoon, then continue across the state during the weekend.
Semaphore Temperature Statistics View More
April Temperature
Parafield Airport (13km)
Lowest 15 April, 2026
7.4 °CAverage April
18 °CHighest 21 April, 2026
31.4 °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