September weather forecastRoleystone, Australia
September
Weather in September
September, the first month of the spring in Roleystone, is still a comfortable month, with an average temperature varying between 9.7°C (49.5°F) and 19°C (66.2°F).Temperature
The arrival of September marks a slight shift to an average high-temperature of a still refreshing 19°C (66.2°F) from August's 17.5°C (63.5°F). In Roleystone, in September, the average low-temperature is a chilly 9.7°C (49.5°F).Humidity
In September, the average relative humidity is 71%.Rainfall
In Roleystone, Australia, in September, it is raining for 12.6 days, with typically 33mm (1.3") of accumulated precipitation. Throughout the year, in Roleystone, Australia, there are 110 rainfall days, and 355mm (13.98") of precipitation is accumulated.Daylight
In September, the average length of the day in Roleystone is 11h and 54min.On the first day of September, sunrise is at 6:32 am and sunset at 5:59 pm. On the last day of the month, sunrise is at 5:54 am and sunset at 6:17 pm AWST.
Sunshine
In September, the average sunshine in Roleystone is 7.8h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The daily maximum UV index of 5 in September interprets into the following advice:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Roleystone, Australia
- Average high temperature in September: 19°C
The warmest months (with the highest average high temperature) are January and February (31.2°C).
The month with the lowest average high temperature is July (16.7°C).
- Average low temperature in September: 9.7°C
The month with the highest average low temperature is February (18.8°C).
The coldest months (with the lowest average low temperature) are July, August and September (9.7°C).
Average pressure in September
Roleystone, Australia
- Average pressure in September: 1019.1mbar
The month with the highest atmospheric pressure is July (1020.6mbar).
The month with the lowest atmospheric pressure is January (1011.4mbar).
Average wind speed in September
Roleystone, Australia
- Average wind speed in September: 12.4km/h
The windiest month (with the highest average wind speed) is February (14.1km/h).
The calmest month (with the lowest average wind speed) is May (11.4km/h).
Average humidity in September
Roleystone, Australia
- Average humidity in September: 71%
The months with the highest relative humidity are July and August (75%).
The month with the lowest relative humidity is January (50%).
Average rainfall in September
Roleystone, Australia
- Average rainfall in September: 33mm
The wettest month (with the highest rainfall) is June (66mm).
The driest months (with the least rainfall) are March and December (9mm).
Average rainfall days in September
Roleystone, Australia
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (4.3 days).
Average daylight in September /
Average sunshine in September
Roleystone, Australia
- Average daylight in September: 11h and 54min
The month with the longest days is December (Average daylight: 14h and 12min).
The month with the shortest days is June (Average daylight: 10h and 6min).
- Average sunshine in September: 7h and 48min
The months with the most sunshine are January and December (Average sunshine: 11h and 30min).
The month with the least sunshine is August (Average sunshine: 5h and 30min).
Average sunshine days in September
Roleystone, Australia
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is December (24.7 days).
The month with the least sunshine days is July (13.3 days).
Average UV index in September
Roleystone, Australia
- Average UV index in September: 5
The months with the highest UV index are January, February, March and December (UV index 6).
The months with the lowest UV index are May, June, July and August (UV index 4).
Average cloud cover in September
Roleystone, Australia
- Average cloud cover in September: 35
The month with the most cloud cover is July (Cloud cover 41).
The month with the least cloud cover is January (Cloud cover 13).
Average visibility in September
Roleystone, Australia
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, November and December (10km).
The months with the lowest visibility are July, August, September and October (9km).
