Semaphore South Weather Forecast
- 18
- 33
Partly cloudy
- 21
- 28
Showers clearing
- 14
- 29
Sunny
- 16
- 30
Cloudy
- 16
- 29
Partly cloudy
- 17
- 32
Mostly sunny
- 20
- 32
Possible shower
Today 21 Feb Adelaide
Partly cloudy. Slight chance of a shower in the late afternoon and evening. Winds easterly 15 to 20 km/h tending northwest to southwesterly in the middle of the day then becoming light in the evening.
Adelaide Metropolitan Waters
- Wind
- Variable about 10 knots becoming east to northeasterly 10 to 15 knots in the evening then becoming north to northeasterly below 10 knots in the late evening.
- Seas
- Below 1 metre.
- 1st Swell
- West to southwesterly below 0.5 metres.
- Weather
- Partly cloudy.
- Weather Situation
- A weak ridge of high pressure across the south of SA will weaken further during Saturday as a trough and cold front cross the Bight. The trough will move across the state on Sunday before interacting with a tropical low over central Australia early next week. The low and trough are then expected to remain slow moving across northern SA next week.
Semaphore South Temperature Statistics View More
February Temperature
Parafield Airport (14km)
Lowest 4 February, 2026
9.7 °CAverage February
23.7 °CHighest 16 February, 2026
39.6 °C
Climate (2021–Present)
Parafield Airport (14km)
Average Low 2021–2026
11.1 °CAverage 2021–2026
17 °CAverage High 2021–2026
23.5 °C