Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The shift into September is characterized by a subtle rise in the average high-temperature, transitioning from August's refreshing 18.3°C (64.9°F) to an agreeable 21.5°C (70.7°F). Nighttime temperature in Oatley, Australia, experiences an average drop to a fresh 10.6°C (51.1°F) in September.Humidity
September is the least humid month, with an average relative humidity of 65%.Rainfall
The months with the least rainfall in Oatley, Australia, are May and September Rain falls for 8.2 days and accumulates 26mm (1.02") of rain.Sea temperature
With an average sea temperature of 18.6°C (65.5°F), September is the month with the coldest seawater in Oatley, Australia.Note: Swimming in water of 18.6°C (65.5°F) is not enjoyable for the majority of individuals. Breathing control becomes increasingly challenging as the temperature dips from 21°C (69.8°F) to 15°C (59°F).
Daylight
The average length of the day in September is 11h and 53min.On the first day of the month, sunrise is at 6:13 am and sunset at 5:37 pm. On the last day of September, in Oatley, sunrise is at 5:33 am and sunset at 5:57 pm AEST.
Sunshine
In Oatley, the average sunshine in September is 8.6h.UV index
May through September, with an average maximum UV index of 4, are months with the lowest UV index in Oatley. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: An average maximum UV index of 4 in September leads to these recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Oatley?
What is the least humid month in Oatley?
What is the average humidity in September in Oatley?
What is the driest month in Oatley?
How many days does it rain in September in Oatley?
What month is the sea coldest in Oatley?
What is the sea temperature in September in Oatley?
How many hours of daylight does Oatley have in September?
When is the sunrise / sunset in September in Oatley?
How many hours of sunshine does Oatley have in September?
When is the lowest UV index in Oatley?
How high is the UV index in September in Oatley?
Average temperature in September
Oatley, Australia
- Average high temperature in September: 21.5°C
The warmest month (with the highest average high temperature) is January (29.3°C).
The month with the lowest average high temperature is June (16.8°C).
- Average low temperature in September: 10.6°C
The month with the highest average low temperature is January (18.8°C).
The coldest month (with the lowest average low temperature) is July (8°C).
Average pressure in September
Oatley, Australia
- Average pressure in September: 1017.2mbar
The month with the highest atmospheric pressure is June (1021mbar).
The month with the lowest atmospheric pressure is January (1012.9mbar).
Average wind speed in September
Oatley, Australia
- Average wind speed in September: 10.2km/h
The windiest months (with the highest average wind speed) are January, September and December (10.2km/h).
The calmest month (with the lowest average wind speed) is April (8.8km/h).
Average humidity in September
Oatley, Australia
- Average humidity in September: 65%
The month with the highest relative humidity is June (76%).
The month with the lowest relative humidity is September (65%).
Average rainfall in September
Oatley, Australia
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is February (83mm).
The driest months (with the least rainfall) are May and September (26mm).
Average rainfall days in September
Oatley, Australia
- Average rainfall days in September: 8.2 days
The month with the highest number of rainy days is February (15.8 days).
The month with the least rainy days is August (7.3 days).
Average sea temperature in September
Oatley, Australia
- Average sea temperature in September: 18.6°C
The best month for swimming (with the highest average sea temperature) is February (23.7°C).
The coldest month (with the lowest average sea temperature) is September (18.6°C).
Average daylight in September /
Average sunshine in September
Oatley, Australia
- Average daylight in September: 11h and 5min
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 4min
The month with the most sunshine is November (Average sunshine: 9h and 24min).
The month with the least sunshine is June (Average sunshine: 5h and 48min).
Average sunshine days in September
Oatley, Australia
- Average sunshine days in September: 19.9 days
The month with the most sunshine days is August (22.7 days).
The month with the least sunshine days is February (10.6 days).
Average UV index in September
Oatley, Australia
- Average UV index in September: 4
The months with the highest UV index are January, February, November 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
Oatley, Australia
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Oatley, Australia
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Oatley, Australia
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