Semaphore Offshore Weather Forecast
- 16
- 17
Partly cloudy
- 17
- 18
Shower or two
- 16
- 18
Partly cloudy
- 16
- 19
Partly cloudy
- 16
- 19
Mostly sunny
- 17
- 19
Partly cloudy
- 16
- 19
Partly cloudy
Today 11 Apr Adelaide
Cloudy. Medium chance of showers, becoming less likely later tonight. Winds southwesterly 20 to 30 km/h.
Adelaide Metropolitan Waters
- Wind
- Southwesterly 15 to 20 knots.
- Seas
- 1.5 metres, increasing to 1.5 to 2 metres north of Grange.
- 1st Swell
- West to southwesterly below 1 metre.
- Weather
- Cloudy. 50% chance of showers.
- Weather Situation
- A high pressure system south of WA extends a ridge over South Australia. This ridge will persist over SA this weekend as the high moves slowly east to be south of the Bight by tomorrow night. The high is forecast to hover over SA on Monday, then weaken and step back to the west on Tuesday allowing a series of fronts to pass over the southeast on Wednesday and Thursday.
Semaphore Offshore Temperature Statistics View More
April Temperature
Parafield Airport (21km)
Lowest 2 April, 2026
10.5 °CAverage April
18.7 °CHighest 6 April, 2026
28.3 °C
Climate (2021–Present)
Parafield Airport (21km)
Average Low 2021–2026
11.2 °CAverage 2021–2026
17 °CAverage High 2021–2026
23.5 °C