September weather forecastKoolunga, Australia
September
Weather in September
The first month of the spring, September, is a comfortable month in Koolunga, Australia, with temperature in the range of an average low of 6.7°C (44.1°F) and an average high of 18°C (64.4°F).Temperature
The start of September signals a slight increase in the average high-temperature, moving from a moderate 14.8°C (58.6°F) in August to a comfortable 18°C (64.4°F). During the month of September, the temperature in Koolunga, Australia, falls to an average of 6.7°C (44.1°F).Humidity
In Koolunga, the average relative humidity in September is 70%.Rainfall
In Koolunga, during September, the rain falls for 10.3 days and regularly aggregates up to 16mm (0.63") of precipitation. Throughout the year, there are 95.1 rainfall days, and 190mm (7.48") of precipitation is accumulated.Daylight
In Koolunga, the average length of the day in September is 11h and 53min.On the first day of the month, sunrise is at 6:34 am and sunset at 5:58 pm. On the last day of September, sunrise is at 5:54 am and sunset at 6:18 pm ACST.
Sunshine
In Koolunga, the average sunshine in September is 8.3h.UV index
In Koolunga, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Koolunga, Australia
- Average high temperature in September: 18°C
The warmest month (with the highest average high temperature) is January (32°C).
The month with the lowest average high temperature is July (14.2°C).
- Average low temperature in September: 6.7°C
The month with the highest average low temperature is January (18.8°C).
The coldest month (with the lowest average low temperature) is August (5.9°C).
Average pressure in September
Koolunga, Australia
- Average pressure in September: 1018mbar
The month with the highest atmospheric pressure is June (1022.4mbar).
The month with the lowest atmospheric pressure is January (1011.7mbar).
Average wind speed in September
Koolunga, Australia
- Average wind speed in September: 13.1km/h
The windiest month (with the highest average wind speed) is August (13.8km/h).
The calmest month (with the lowest average wind speed) is April (11.2km/h).
Average humidity in September
Koolunga, Australia
- Average humidity in September: 70%
The month with the highest relative humidity is July (75%).
The month with the lowest relative humidity is January (40%).
Average rainfall in September
Koolunga, Australia
- Average rainfall in September: 16mm
The wettest month (with the highest rainfall) is August (28mm).
The driest month (with the least rainfall) is March (8mm).
Average rainfall days in September
Koolunga, Australia
- Average rainfall days in September: 10.3 days
The month with the highest number of rainy days is August (11.3 days).
The month with the least rainy days is February (4.6 days).
Average daylight in September /
Average sunshine in September
Koolunga, 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 18min
The month with the most sunshine is December (Average sunshine: 10h and 12min).
The month with the least sunshine is August (Average sunshine: 7h and 18min).
Average sunshine days in September
Koolunga, Australia
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is January (23.8 days).
The month with the least sunshine days is August (16.8 days).
Average UV index in September
Koolunga, Australia
- Average UV index in September: 4
The month with the highest UV index is December (UV index 7).
The month with the lowest UV index is June (UV index 3).
Average cloud cover in September
Koolunga, Australia
- Average cloud cover in September: 31
The months with the most cloud cover are June, July and August (Cloud cover 37).
The month with the least cloud cover is January (Cloud cover 15).
Average visibility in September
Koolunga, Australia
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, November and December (10km).
The months with the lowest visibility are May, June, July, August, September and October (9km).
