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Australia

South Australia weather in September 2025

Australia

South Australia weather in September 2025

 

Day

18 °C

 

Night

9 °C

 

Sea

14 °C

 

Precipitation

57 mm

in month

 

Rainy days

10 days

in month

 

Daylight

12 hours

average

 

Sunshine

6 hours

average

 

Humidity

62 %

 

Day

18 °C

 

Night

9 °C

 

Sea

14 °C

 

Precipitation

57 mm

in month

 

Rainy days

10 days

in month

 

Daylight

12 hours

average

 

Sunshine

6 hours

average

 

Humidity

62 %

Overview: South Australia
In September in South Australia, the average air temperature ranges from 18 °C (64 °F) during the day to 9 °C (48 °F) at night. There are 10 days of rain on average, where the rainfall is 57 mm (2.25 in).

Weather charts for South Australia

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Architecture in Adelaide on a sunny day
Bridge near Adelaide in partly cloudy weather
Countryside near Adelaide at sunset time

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Weather overview and FAQs

Weather overview

In September in South Australia, the average air temperature ranges from 18 °C (64 °F) during the day to 9 °C (48 °F) at night. There are 10 days of rain on average, where the rainfall is 57 mm (2.25 in).

Are there good conditions to visit in South Australia in September?

September is a good month to visit South Australia. Especially for non-beach activities, such as hiking or sightseeing. There are only 10 days of rain in the whole month, so you can leave your umbrella at home. A relatively low temperature of 18 °C (64 °F) may be ideal for walking or outdoor activities, but some people may have a different idea of the holiday. The temperature of 9 °C (48 °F) at night may make it better to dine inside or to put on more clothes for a dinner outside.

What is the temperature in South Australia during the day in September?

In September in South Australia, the average daily temperatures will be 18 °C (64 °F). Nice temperature for walking around the city or on the beach, but you will probably get cold soon when wearing a swimsuit. When walking around all day, people used to cold conditions, pull out their shorts and get rid of their sweaters. On some days, when spending time in the direct sun, sunscreen can be useful, especially for people with more sensitive skin.

What is the average number of rainy days in South Australia in September?

In South Australia in September, we can expect 10 days to be rainy, that is, days when precipitation exceeds 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 2.3 days of the week, or in general - 33 % days.

What is the rainfall intensity in South Australia in September?

In September in South Australia, there is 57 mm (2.25 in) rainfall, which means on average 2 mm (0.07 in) rainfall per day.

What is the air temperature in South Australia in September at night?

The average night temperature in South Australia in September is 9 °C (48 °F). The nights will be cool, layers of clothes will be needed for evening and morning walks, the hotel should be equipped with heating.

How long is the day (from dawn till dusk) in South Australia in September?

The length of daylight in South Australia in September is 12 hours.

How many sunny hours can I expect in September in South Australia?

There is an average length of sunshine of 6 hours per day in South Australia in September.

Is there a wet season in September in South Australia?

No, there is no wet season in September in South Australia - you can expect 10 days of rain during the month.

Is the weather in South Australia warmer in September than in August?

Yes, September in South Australia is warmer than August by 2 °C (35 °F).

How windy is South Australia in September?

An average wind scale that can be expected in South Australia in September is 6.

Is the sea in South Australia warmer in September than in August?

No, the sea temperature in South Australia in September is not higher than in August.

Is South Australia rainier in September than in October?

Yes, in September in South Australia it rains more than in October.

Is the temperature rising or falling in the course of time in South Australia in September?

Over the course of September in South Australia, the temperatures are rising from 17 °C (62 °F) at the beginning of the month to 19 °C (66 °F) at the end of the month.

What level of humidity is to expect in South Australia in September?

Humidity in South Australia in September is 62 %.

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