September weather forecast
Adelaide, Australia

Weather in September

September, the first month of the spring, in Adelaide, is an enjoyable month, with average temperature varying between 9.9°C (49.8°F) and 16.4°C (61.5°F).

Temperature

In Adelaide, the average high-temperature is essentially the same as in August - an enjoyable 16.4°C (61.5°F). In Adelaide, the average low-temperature is 9.9°C (49.8°F).

Humidity

In September, the average relative humidity is 69%.

Rainfall

In Adelaide, Australia, in September, during 11.8 rainfall days, 25mm (0.98") of precipitation is typically accumulated. In Adelaide, during the entire year, the rain falls for 126.2 days and collects up to 326mm (12.83") of precipitation.

Sea temperature

Months with the coldest seawater in Adelaide are August through October, with an average sea temperature of 15°C (59°F).
Note: Swimming in 15°C (59°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

Daylight

In Adelaide, Australia, the average length of the day in September is 11.9h.

Sunshine

In September, the average sunshine in Adelaide, Australia, is 8h.

UV index

In Adelaide, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to the Sun's UV rays for average individuals.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the average humidity in September in Adelaide?

In September, the average relative humidity is 69%.

How many days does it rain in September in Adelaide?

In September, in Adelaide, Australia, the rain falls for 11.8 days. Throughout September, 25mm (0.98") of precipitation is accumulated.

What are the months with the coldest sea water in Adelaide?

August through October, with an average sea temperature of 15°C (59°F), are months with the coldest seawater in Adelaide, Australia.

How cold is the water in September in Adelaide?

In September, the average sea temperature in Adelaide is 15°C (59°F). For most, swimming in 15°C (59°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

How many hours of daylight does Adelaide have in September?

In Adelaide, Australia, the average length of the day in September is 11.9h.

How long on average sun shines in September in Adelaide?

In September, the average sunshine is 8h.

What is the UV index reading in September in Adelaide?

In Adelaide, Australia, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to the UV radiation.

Average temperature in September
Adelaide, Australia

Average temperature in September - Adelaide, Australia
  • Average high temperature in September: 16.4°C

The warmest month (with the highest average high temperature) is January (26.3°C).
The month with the lowest average high temperature is July (13.9°C).

  • Average low temperature in September: 9.9°C

The month with the highest average low temperature is January (17.8°C).
The coldest month (with the lowest average low temperature) is August (9.1°C).

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Average pressure in September
Adelaide, Australia

Average pressure in September - Adelaide, Australia
  • Average pressure in September: 1017.5mbar

The month with the highest atmospheric pressure is June (1021.8mbar).
The month with the lowest atmospheric pressure is January (1012.4mbar).

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Average wind speed in September
Adelaide, Australia

Average wind speed in September - Adelaide, Australia
  • Average wind speed in September: 15.7km/h

The windiest month (with the highest average wind speed) is August (16.3km/h).
The calmest month (with the lowest average wind speed) is April (12.9km/h).

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Average humidity in September
Adelaide, Australia

Average humidity in September - Adelaide, Australia
  • Average humidity in September: 69%

Months with the highest relative humidity are June and July (74%).
The month with the lowest relative humidity is January (58%).

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Average rainfall in September
Adelaide, Australia

Average rainfall in September - Adelaide, Australia
  • Average rainfall in September: 25mm

The wettest month (with the highest rainfall) is August (43mm).
The driest month (with the least rainfall) is March (16mm).

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Average rainfall days in September
Adelaide, Australia

Average rainfall days in September - Adelaide, Australia
  • Average rainfall days in September: 11.8 days

The month with the highest number of rainy days is July (15.2 days).
The month with the least rainy days is February (6.2 days).

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Average sea temperature in September
Adelaide, Australia

Average sea temperature in September - Adelaide, Australia
  • Average sea temperature in September: 15°C

The best month for swimming (with the highest average sea temperature) is February (20°C).
The coldest months (with the lowest average sea temperature) are August, September and October (15°C).

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Average daylight in September /
Average sunshine in September
Adelaide, Australia

Average daylight in September / Average sunshine in September - Adelaide, Australia
  • Average daylight in September: 11.9h

The month with the longest days is December (Average daylight: 14.5h).
The month with the shortest days is June (Average daylight: 9.8h).

  • Average sunshine in September: 8h

The month with the most sunshine is December (Average sunshine: 10.1h).
The month with the least sunshine is August (Average sunshine: 7.1h).

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Average sunshine days in September
Adelaide, Australia

Average sunshine days in September - Adelaide, Australia
  • Average sunshine days in September: 14.5 days

The month with the most sunshine days is January (21.9 days).
The month with the least sunshine days is August (12.7 days).

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Average UV index in September
Adelaide, Australia

Average UV index in September - Adelaide, Australia
  • Average UV index in September: 4

Months with the highest UV index are February and December (UV index 6).
The month with the lowest UV index is June (UV index 3).

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Average cloud cover in September
Adelaide, Australia

Average cloud cover in September - Adelaide, Australia
  • Average cloud cover in September: 33

The month with the most cloud cover is July (Cloud cover 41).
The month with the least cloud cover is January (Cloud cover 20).

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Average visibility in September
Adelaide, Australia

Average visibility in September - Adelaide, Australia
  • Average visibility in September: 10km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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