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
Weather in September
Temperature
The arrival of September sees a recorded average high-temperature of a still refreshing 15.4°C (59.7°F), showing little divergence from the previous month's conditions. During September, Chelsea experiences an average low-temperature of 9.4°C (48.9°F) at night.Humidity
In Chelsea, the average relative humidity in September is 74%.Rainfall
In Chelsea, during September, the rain falls for 17.3 days and regularly aggregates up to 52mm (2.05") of precipitation. In Chelsea, during the entire year, the rain falls for 177.5 days and collects up to 562mm (22.13") of precipitation.Daylight
In September, the average length of the day in Chelsea is 11h and 51min.On the first day of the month, sunrise is at 6:40 am and sunset at 5:58 pm. On the last day of September, sunrise is at 5:55 am and sunset at 6:23 pm AEST.
Sunshine
In Chelsea, the average sunshine in September is 7.2h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: An average UV index of 4 in September transforms into this advice:
Ensure safety - Recommendations to avert sunburn are presented. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Frequently asked questions
What is the usual temperature for Chelsea in September?
What is the average humidity in September in Chelsea?
How many days does it rain in September in Chelsea?
What is the average length of the day in September in Chelsea?
When is the sunrise / sunset in September in Chelsea?
How many hours of sunshine does Chelsea have in September?
What is the UV index intensity in September in Chelsea?
Average temperature in September
Chelsea, Australia
- Average high temperature in September: 15.4°C
The warmest months (with the highest average high temperature) are January and February (23.4°C).
The month with the lowest average high temperature is July (13°C).
- Average low temperature in September: 9.4°C
The month with the highest average low temperature is February (16.2°C).
The coldest months (with the lowest average low temperature) are July and August (8.6°C).
Average pressure in September
Chelsea, Australia
- Average pressure in September: 1016.1mbar
The month with the highest atmospheric pressure is June (1021mbar).
The month with the lowest atmospheric pressure is January (1012.6mbar).
Average wind speed in September
Chelsea, Australia
- Average wind speed in September: 17.1km/h
The windiest months (with the highest average wind speed) are July and August (18.6km/h).
The calmest months (with the lowest average wind speed) are January, March and December (14km/h).
Average humidity in September
Chelsea, Australia
- Average humidity in September: 74%
The month with the highest relative humidity is June (78%).
The month with the lowest relative humidity is January (68%).
Average rainfall in September
Chelsea, Australia
- Average rainfall in September: 52mm
The wettest month (with the highest rainfall) is May (59mm).
The driest month (with the least rainfall) is March (34mm).
Average rainfall days in September
Chelsea, Australia
- Average rainfall days in September: 17.3 days
The month with the highest number of rainy days is August (19.3 days).
The month with the least rainy days is January (10.1 days).
Average daylight in September /
Average sunshine in September
Chelsea, Australia
- Average daylight in September: 11h and 5min
The month with the longest days is December (Average daylight: 14h and 48min).
The month with the shortest days is June (Average daylight: 9h and 36min).
- Average sunshine in September: 7h and 1min
The month with the most sunshine is December (Average sunshine: 9h and 42min).
The month with the least sunshine is May (Average sunshine: 6h and 24min).
Average sunshine days in September
Chelsea, Australia
- Average sunshine days in September: 9.9 days
The month with the most sunshine days is January (17.1 days).
The month with the least sunshine days is August (9.4 days).
Average UV index in September
Chelsea, Australia
- Average UV index in September: 4
The month with the highest UV index is December (UV index 6).
The months with the lowest UV index are June, July and August (UV index 3).
Average cloud cover in September
Chelsea, Australia
- Average cloud cover in September: 44
The month with the most cloud cover is July (Cloud cover 49).
The month with the least cloud cover is January (Cloud cover 31).
Average visibility in September
Chelsea, 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).
Chelsea, Australia
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