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 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
September's arrival registers an average high-temperature of an enjoyable 16°C (60.8°F), closely aligning with the temperature of the previous month. In September, Happy Valley reports a consistent average low-temperature of 10.6°C (51.1°F) during the nights.Humidity
In Happy Valley, the average relative humidity in September is 69%.Rainfall
In Happy Valley, in September, it is raining for 12.8 days, with typically 30mm (1.18") of accumulated precipitation. Throughout the year, there are 138.9 rainfall days, and 363mm (14.29") of precipitation is accumulated.Daylight
In Happy Valley, the average length of the day in September is 11h and 52min.On the first day of the month, sunrise is at 6:34 am and sunset at 5:56 pm. On the last day of September, sunrise is at 5:53 am and sunset at 6:18 pm ACST.
Sunshine
The average sunshine in September is 7.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The daily high UV index of 4 in September translates into this advice:
Undertake precautions - Guarding against sun damage is counselled. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How many days does it rain in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Happy Valley have in September?
What is the UV index reading in September?
Average temperature in September
Happy Valley, Australia
- Average high temperature in September: 16°C
The warmest month (with the highest average high temperature) is January (24.9°C).
The month with the lowest average high temperature is July (14°C).
- Average low temperature in September: 10.6°C
The month with the highest average low temperature is February (17.7°C).
The coldest month (with the lowest average low temperature) is August (9.9°C).
Average pressure in September
Happy Valley, Australia
- Average pressure in September: 1017.4mbar
The month with the highest atmospheric pressure is June (1021.7mbar).
The month with the lowest atmospheric pressure is January (1012.5mbar).
Average wind speed in September
Happy Valley, Australia
- Average wind speed in September: 16.7km/h
The windiest month (with the highest average wind speed) is August (17.7km/h).
The calmest month (with the lowest average wind speed) is April (13.8km/h).
Average humidity in September
Happy Valley, Australia
- Average humidity in September: 69%
The months with the highest relative humidity are June and July (73%).
The month with the lowest relative humidity is January (61%).
Average rainfall in September
Happy Valley, Australia
- Average rainfall in September: 30mm
The wettest month (with the highest rainfall) is August (47mm).
The driest month (with the least rainfall) is January (17mm).
Average rainfall days in September
Happy Valley, Australia
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is February (6.3 days).
Average daylight in September /
Average sunshine in September
Happy Valley, Australia
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 14h and 30min).
The month with the shortest days is June (Average daylight: 9h and 48min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is December (Average sunshine: 10h and 0min).
The months with the least sunshine are May, July and August (Average sunshine: 7h and 0min).
Average sunshine days in September
Happy Valley, Australia
- Average sunshine days in September: 13.1 days
The month with the most sunshine days is January (20.9 days).
The month with the least sunshine days is August (10.8 days).
Average UV index in September
Happy Valley, Australia
- Average UV index in September: 4
The months with the highest UV index are January and December (UV index 6).
The month with the lowest UV index is July (UV index 3).
Average cloud cover in September
Happy Valley, Australia
- Average cloud cover in September: 34
The months with the most cloud cover are May and July (Cloud cover 42).
The month with the least cloud cover is January (Cloud cover 20).
Average visibility in September
Happy Valley, Australia
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
