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 shift into September finds Clapham at an average high-temperature of a still refreshing 16.4°C (61.5°F), closely comparable to August's conditions. Throughout September, the temperature falls to an average low of 9.9°C (49.8°F).Humidity
In September, the average relative humidity is 69%.Rainfall
In Clapham, in September, during 11.8 rainfall days, 25mm (0.98") of precipitation is typically accumulated. Throughout the year, in Clapham, there are 126.2 rainfall days, and 326mm (12.83") of precipitation is accumulated.Daylight
In Clapham, 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 6:17 pm ACST.
Sunshine
In Clapham, the average sunshine in September is 8h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In September, a daily UV index of 4 turns into the following recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Frequently asked questions
What are the temperatures in Clapham in September?
What is the average humidity in September in Clapham?
How many days does it rain in September in Clapham?
What is the average length of the day in September in Clapham?
When is the sunrise / sunset in September in Clapham?
How many hours of sunshine does Clapham have in September?
How high is the UV index in September in Clapham?
Average temperature in September
Clapham, Australia
- Average high temperature in September: 16.4°C
The warmest month (with the highest average high temperature) is January (26.3°C).
The month with the lowest average high temperature is July (13.9°C).
- Average low temperature in September: 9.9°C
The month with the highest average low temperature is January (17.8°C).
The coldest month (with the lowest average low temperature) is August (9.1°C).
Average pressure in September
Clapham, Australia
- Average pressure in September: 1017.5mbar
The month with the highest atmospheric pressure is June (1021.8mbar).
The month with the lowest atmospheric pressure is January (1012.4mbar).
Average wind speed in September
Clapham, Australia
- Average wind speed in September: 15.7km/h
The windiest month (with the highest average wind speed) is August (16.3km/h).
The calmest month (with the lowest average wind speed) is April (12.9km/h).
Average humidity in September
Clapham, Australia
- Average humidity in September: 69%
The months with the highest relative humidity are June and July (74%).
The month with the lowest relative humidity is January (58%).
Average rainfall in September
Clapham, Australia
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is August (43mm).
The driest month (with the least rainfall) is March (16mm).
Average rainfall days in September
Clapham, Australia
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is July (15.2 days).
The month with the least rainy days is February (6.2 days).
Average daylight in September /
Average sunshine in September
Clapham, 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: 8h and 0min
The month with the most sunshine is December (Average sunshine: 10h and 6min).
The month with the least sunshine is August (Average sunshine: 7h and 6min).
Average sunshine days in September
Clapham, Australia
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is January (21.9 days).
The month with the least sunshine days is August (12.7 days).
Average UV index in September
Clapham, Australia
- Average UV index in September: 4
The months with the highest UV index are February and December (UV index 6).
The month with the lowest UV index is June (UV index 3).
Average cloud cover in September
Clapham, Australia
- Average cloud cover in September: 33
The month with the most cloud cover is July (Cloud cover 41).
The month with the least cloud cover is January (Cloud cover 20).
Average visibility in September
Clapham, 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).
Clapham, Australia
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