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
September
Weather in September
Temperature
The arrival of September brings a soft temperature shift, with the average high-temperature nudging from an enjoyable 18.3°C (64.9°F) in August to a pleasant 21.5°C (70.7°F). Oatley experiences a nighttime temperature average of 10.6°C (51.1°F) during September.Humidity
September is the least humid month, with an average relative humidity of 65%.Rainfall
May and September are months with the least rain when the rain falls for 8.2 days and typically aggregates up to 26mm (1.02") of rain.Sea temperature
September is the month with the coldest seawater, with an average sea temperature of 18.6°C (65.5°F).Note: Swimming in 18.6°C (65.5°F) is not pleasurable for most people. Breathing control grows increasingly challenging as the water temperature falls under 21°C (69.8°F).
Daylight
In Oatley, the average length of the day in September is 11h and 53min.On the first day of September, sunrise is at 6:13 am and sunset at 5:37 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 5:57 pm AEST.
Sunshine
The average sunshine in September in Oatley is 8.6h.UV index
May through September, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the least humid month?
What is the average humidity in September?
What is the driest month in Oatley?
How many days does it rain in September?
What is the month with the coldest sea water?
How cold is the water in September?
How many hours of daylight does Oatley have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What are the months with the lowest UV index?
What is the UV index reading in September?
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).
