Semaphore Weather Forecast
- 16
- 29
Partly cloudy
- 16
- 32
Sunny
- 21
- 34
Mostly sunny
- 16
- 27
Mostly sunny
- 12
- 24
Partly cloudy
- 13
- 23
Partly cloudy
- 11
- 29
Sunny
Today 10 Dec Adelaide
Partly cloudy. Slight chance of a shower in the morning and early afternoon. Winds southeasterly 15 to 20 km/h becoming light in the early morning then becoming southeasterly 20 to 30 km/h in the morning.
Adelaide Metropolitan Waters
- Wind
- Southeasterly 10 to 15 knots, reaching up to 20 knots south of Brighton in the evening.
- Seas
- Below 1 metre.
- 1st Swell
- West to southwesterly below 0.5 metres.
- Weather
- Partly cloudy.
- Weather Situation
- A high pressure system over the Bight extends a ridge of high pressure over most of the state and will persist over southern SA during today and Thursday. Meanwhile, a trough of low pressure over the far northwest is expected to move along the northern border today. The trough will extend further south on Thursday then move eastwards across the west and south of SA on Friday. Another ridge of high pressure will move over the south over the weekend and the trough will move slowly northeastwards.
Semaphore Temperature Statistics View More
December Temperature
Parafield Airport (13km)
Lowest 7 December, 2025
7.4 °CAverage December
19.4 °CHighest 4 December, 2025
36.4 °C
Climate (2020–Present)
Parafield Airport (13km)
Average Low 2020–2025
11.1 °CAverage 2020–2025
17 °CAverage High 2020–2025
23.4 °C