September weather forecast
Yarrawarrah, Australia

September

Weather in September

September, the first month of the spring in Yarrawarrah, is a pleasant month, with temperature in the range of an average high of 21.5°C (70.7°F) and an average low of 10.6°C (51.1°F).

Temperature

The shift from August to September introduces a subtle increase in the average high-temperature, moving from a comfortable 18.3°C (64.9°F) to a pleasant 21.5°C (70.7°F). In the month of September, an average of 10.6°C (51.1°F) marks the low-temperature in Yarrawarrah, Australia.

Humidity

With an average relative humidity of 65%, September is the least humid month in Yarrawarrah.

Rainfall

May and September are months with the least rain in Yarrawarrah when the rain falls for 8.2 days and typically aggregates up to 26mm (1.02") of rain.

Daylight

In September, the average length of the day in Yarrawarrah is 11h and 53min.
On the first day of the month, sunrise is at 6:13 am and sunset at 5:37 pm. On the last day of September, in Yarrawarrah, sunrise is at 5:33 am and sunset at 5:57 pm AEST.

Sunshine

In Yarrawarrah, the average sunshine in September is 8.6h.

UV index

May through September, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 4 during September leads to these advisories:
Exercise caution. Those with pale skin may experience burns in less than half an hour. It's recommended to limit sun exposure when its radiation is at its peak during midday. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.

Frequently asked questions

What are September temperatures in Yarrawarrah?
In Yarrawarrah, in September, the average high-temperature is 21.5°C (70.7°F), and the average low-temperature is 10.6°C (51.1°F). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in February is estimated at 30°C (86°F).
What is the least humid month in Yarrawarrah?
With an average relative humidity of 65%, September is the least humid month in Yarrawarrah, Australia.
What is the average humidity in September in Yarrawarrah?
The average relative humidity in September in Yarrawarrah, Australia, is 65%.
What is the driest month in Yarrawarrah?
May and September are months with the least rain in Yarrawarrah, Australia, when the rain falls for 8.2 days and typically aggregates up to 26mm (1.02") of rain.
How much does it rain in Yarrawarrah in September?
In September, the rain falls for 8.2 days. Throughout September, 26mm (1.02") of precipitation is accumulated.
What is the average length of the day in September in Yarrawarrah?
The average day length in September in Yarrawarrah is 11h and 53min.
When is the sunrise / sunset in September in Yarrawarrah?
In September, on the first day of the month, sunrise is at 6:13 am and sunset at 5:37 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 5:57 pm AEST.
How long on average sun shines in September in Yarrawarrah?
In Yarrawarrah, Australia, the average sunshine duration in September is 8.6h.
What are the months with the lowest UV index in Yarrawarrah?
The months with the lowest UV index in Yarrawarrah are May through September, with an average maximum UV index of 4.
What is the UV index reading in September in Yarrawarrah?
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September
Yarrawarrah, Australia
  • Average high temperature in September: 21.5°C

The warmest month (with the highest average high temperature) is January (29.3°C).
The month with the lowest average high temperature is June (16.8°C).

  • Average low temperature in September: 10.6°C

The month with the highest average low temperature is January (18.8°C).
The coldest month (with the lowest average low temperature) is July (8°C).

Average pressure in September
Yarrawarrah, Australia
  • Average pressure in September: 1017.2mbar

The month with the highest atmospheric pressure is June (1021mbar).
The month with the lowest atmospheric pressure is January (1012.9mbar).

Average wind speed in September
Yarrawarrah, Australia
  • Average wind speed in September: 10.2km/h

The windiest months (with the highest average wind speed) are January, September and December (10.2km/h).
The calmest month (with the lowest average wind speed) is April (8.8km/h).

Average humidity in September
Yarrawarrah, Australia
  • Average humidity in September: 65%

The month with the highest relative humidity is June (76%).
The month with the lowest relative humidity is September (65%).

Average rainfall in September
Yarrawarrah, Australia
  • Average rainfall in September: 26mm

The wettest month (with the highest rainfall) is February (83mm).
The driest months (with the least rainfall) are May and September (26mm).

Average rainfall days in September
Yarrawarrah, Australia
  • Average rainfall days in September: 8.2 days

The month with the highest number of rainy days is February (15.8 days).
The month with the least rainy days is August (7.3 days).

Average daylight in September /
Average sunshine in September
Yarrawarrah, Australia
  • Average daylight in September: 11h and 5min

The month with the longest days is December (Average daylight: 14h and 24min).
The month with the shortest days is June (Average daylight: 9h and 54min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is November (Average sunshine: 9h and 24min).
The month with the least sunshine is June (Average sunshine: 5h and 48min).

Average sunshine days in September
Yarrawarrah, Australia
  • Average sunshine days in September: 19.9 days

The month with the most sunshine days is August (22.7 days).
The month with the least sunshine days is February (10.6 days).

Average UV index in September
Yarrawarrah, Australia
  • Average UV index in September: 4

The months with the highest UV index are January, February, November and December (UV index 6).
The months with the lowest UV index are May, June, July, August and September (UV index 4).

Average cloud cover in September
Yarrawarrah, Australia
  • Average cloud cover in September: 29

The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 25).

Average visibility in September
Yarrawarrah, Australia
  • Average visibility in September: 9km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).

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