September weather forecastNarellan, Australia
September
Weather in September
September, the first month of the spring in Narellan, is an agreeable month, with an average temperature varying between 20.7°C (69.3°F) and 10.2°C (50.4°F).Temperature
September's arrival brings an average high-temperature of an agreeable 20.7°C (69.3°F), demonstrating subtle variation from the preceding month. In Narellan, September nights cool down to an average of 10.2°C (50.4°F).Humidity
The months with the lowest humidity are August and September, with an average relative humidity of 67%.Rainfall
In Narellan, in September, it is raining for 8.7 days, with typically 26mm (1.02") of accumulated precipitation. In Narellan, during the entire year, the rain falls for 137.9 days and collects up to 502mm (19.76") of precipitation.Daylight
In Narellan, the average length of the day in September is 11h and 53min.On the first day of September, sunrise is at 6:15 am and sunset at 5:39 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 5:59 pm AEST.
Sunshine
In September, the average sunshine in Narellan, Australia, is 8.7h.UV index
The months with the lowest UV index in Narellan are April through September, with an average maximum UV index of 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: In September, a daily UV index of 4 turns into the following recommendations:
Put precautions into practice - Protective measures against sun-induced damage are advised. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Narellan, Australia
- Average high temperature in September: 20.7°C
The warmest month (with the highest average high temperature) is January (28.7°C).
The months with the lowest average high temperature are June and July (16.3°C).
- Average low temperature in September: 10.2°C
The month with the highest average low temperature is January (18.3°C).
The coldest month (with the lowest average low temperature) is July (7.6°C).
Average pressure in September
Narellan, Australia
- Average pressure in September: 1017.1mbar
The month with the highest atmospheric pressure is June (1021mbar).
The month with the lowest atmospheric pressure is January (1012.8mbar).
Average wind speed in September
Narellan, Australia
- Average wind speed in September: 10.2km/h
The windiest months (with the highest average wind speed) are August and September (10.2km/h).
The calmest month (with the lowest average wind speed) is April (8.6km/h).
Average humidity in September
Narellan, Australia
- Average humidity in September: 67%
The month with the highest relative humidity is June (77%).
The months with the lowest relative humidity are August and September (67%).
Average rainfall in September
Narellan, Australia
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is February (84mm).
The driest month (with the least rainfall) is May (24mm).
Average rainfall days in September
Narellan, Australia
- Average rainfall days in September: 8.7 days
The month with the highest number of rainy days is January (15.4 days).
The month with the least rainy days is August (7.8 days).
Average daylight in September /
Average sunshine in September
Narellan, 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 42min
The month with the most sunshine is November (Average sunshine: 9h and 48min).
The month with the least sunshine is June (Average sunshine: 6h and 0min).
Average sunshine days in September
Narellan, Australia
- Average sunshine days in September: 18.4 days
The month with the most sunshine days is August (21.7 days).
The month with the least sunshine days is February (10.6 days).
Average UV index in September
Narellan, Australia
- Average UV index in September: 4
The months with the highest UV index are January, February and December (UV index 6).
The months with the lowest UV index are April, May, June, July, August and September (UV index 4).
Average cloud cover in September
Narellan, Australia
- Average cloud cover in September: 26
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in September
Narellan, Australia
- Average visibility in September: 9km
The months with the highest visibility are June and August (10km).
The months with the lowest visibility are January, February, March, April, May, July, September, October, November and December (9km).
