September weather forecastUnanderra, Australia
September
Weather in September
September, the first month of the spring in Unanderra, is still a comfortable month, with an average temperature varying between 18.8°C (65.8°F) and 11.8°C (53.2°F).Temperature
September's beginning signals an average high-temperature of a still refreshing 18.8°C (65.8°F), barely different from August's 16.4°C (61.5°F). In Unanderra, the average low-temperature during the month of September is a fresh 11.8°C (53.2°F).Humidity
In September, the average relative humidity is 69%.Rainfall
The month with the least rainfall in Unanderra is September, when the rain falls for 11.7 days and typically collects 33mm (1.3") of precipitation.Daylight
The average length of the day in September in Unanderra, Australia, is 11h and 53min.On the first day of September, sunrise is at 6:14 am and sunset at 5:38 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 5:58 pm AEST.
Sunshine
The average sunshine in September in Unanderra is 8.6h.UV index
The months with the lowest UV index in Unanderra are May through September, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Ensure safety - Sun damage prevention is strongly urged. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Unanderra, Australia
- Average high temperature in September: 18.8°C
The warmest month (with the highest average high temperature) is January (25.7°C).
The month with the lowest average high temperature is July (15.7°C).
- Average low temperature in September: 11.8°C
The months with the highest average low temperature are January and February (19°C).
The coldest month (with the lowest average low temperature) is July (9.7°C).
Average pressure in September
Unanderra, Australia
- Average pressure in September: 1017mbar
The month with the highest atmospheric pressure is June (1020.8mbar).
The month with the lowest atmospheric pressure is January (1012.9mbar).
Average wind speed in September
Unanderra, Australia
- Average wind speed in September: 15.7km/h
The windiest month (with the highest average wind speed) is August (16.2km/h).
The calmest month (with the lowest average wind speed) is April (13.9km/h).
Average humidity in September
Unanderra, Australia
- Average humidity in September: 69%
The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is August (67%).
Average rainfall in September
Unanderra, Australia
- Average rainfall in September: 33mm
The wettest month (with the highest rainfall) is February (97mm).
The driest month (with the least rainfall) is September (33mm).
Average rainfall days in September
Unanderra, Australia
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is March (18.3 days).
The month with the least rainy days is August (9.5 days).
Average daylight in September /
Average sunshine in September
Unanderra, Australia
- Average daylight in September: 11h and 54min
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 36min
The month with the most sunshine is November (Average sunshine: 9h and 48min).
The month with the least sunshine is June (Average sunshine: 5h and 54min).
Average sunshine days in September
Unanderra, Australia
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is August (19.5 days).
The month with the least sunshine days is February (7.9 days).
Average UV index in September
Unanderra, Australia
- Average UV index in September: 4
The months with the highest UV index are January 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
Unanderra, Australia
- Average cloud cover in September: 28
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in September
Unanderra, Australia
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
