September weather forecastDerriwong, Australia
September
Weather in September
September, the first month of the spring in Derriwong, is an enjoyable month, with an average temperature varying between 18.6°C (65.5°F) and 6.9°C (44.4°F).Temperature
The onset of September marks a slight increase in the average high-temperature, moving from 14.8°C (58.6°F) in August to a still refreshing 18.6°C (65.5°F). During the nights in September, an average low-temperature of 6.9°C (44.4°F) is observed in Derriwong.Humidity
In September, the average relative humidity is 69%.Rainfall
September is the month with the least rainfall in Derriwong. Rain falls for 6.1 days and accumulates 14mm (0.55") of precipitation.Snowfall
January through July, September through December are months without snowfall in Derriwong.Daylight
The average length of the day in September is 11h and 53min.On the first day of the month, sunrise is at 6:27 am and sunset at 5:53 pm. On the last day of September, in Derriwong, sunrise is at 5:48 am and sunset at 6:12 pm AEST.
Sunshine
The average sunshine in September is 8.7h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 4 during September translates into the following guidance:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Derriwong, Australia
- Average high temperature in September: 18.6°C
The warmest month (with the highest average high temperature) is January (33.7°C).
The month with the lowest average high temperature is July (13.5°C).
- Average low temperature in September: 6.9°C
The month with the highest average low temperature is January (21.4°C).
The coldest month (with the lowest average low temperature) is August (4.6°C).
Average pressure in September
Derriwong, Australia
- Average pressure in September: 1018.2mbar
The month with the highest atmospheric pressure is June (1022.3mbar).
The month with the lowest atmospheric pressure is January (1010.5mbar).
Average wind speed in September
Derriwong, Australia
- Average wind speed in September: 13.8km/h
The windiest month (with the highest average wind speed) is September (13.8km/h).
The calmest month (with the lowest average wind speed) is April (11.8km/h).
Average humidity in September
Derriwong, Australia
- Average humidity in September: 69%
The month with the highest relative humidity is June (79%).
The month with the lowest relative humidity is January (39%).
Average rainfall in September
Derriwong, Australia
- Average rainfall in September: 14mm
The wettest month (with the highest rainfall) is November (42mm).
The driest month (with the least rainfall) is September (14mm).
Average rainfall days in September
Derriwong, Australia
- Average rainfall days in September: 6.1 days
The month with the highest number of rainy days is March (8.4 days).
The months with the least rainy days are May and September (6.1 days).
Average snowfall days in September
Derriwong, Australia
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is August (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Derriwong, Australia
- Average daylight in September: 11h and 54min
The month with the longest days is December (Average daylight: 14h and 18min).
The month with the shortest days is June (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 42min
The month with the most sunshine is December (Average sunshine: 10h and 42min).
The month with the least sunshine is June (Average sunshine: 7h and 42min).
Average sunshine days in September
Derriwong, Australia
- Average sunshine days in September: 21.8 days
The month with the most sunshine days is May (23.4 days).
The month with the least sunshine days is June (19.6 days).
Average UV index in September
Derriwong, Australia
- Average UV index in September: 4
The months with the highest UV index are January and December (UV index 7).
The months with the lowest UV index are June and August (UV index 3).
Average cloud cover in September
Derriwong, Australia
- Average cloud cover in September: 24
The month with the most cloud cover is June (Cloud cover 34).
The month with the least cloud cover is December (Cloud cover 17).
Average visibility in September
Derriwong, Australia
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, October, November and December (10km).
The months with the lowest visibility are June, July, August and September (9km).
