September weather forecastBalham, United Kingdom
September
Weather in September
September, the first month of the autumn in Balham, is still a refreshing month, with an average temperature ranging between min 11.3°C (52.3°F) and max 19.1°C (66.4°F).Temperature
Balham notes an average high-temperature of a comfortable 19.1°C (66.4°F) in September, hardly diverging from August. Throughout the month of September, Balham sees a steady low-temperature average of 11.3°C (52.3°F).Humidity
In Balham, the average relative humidity in September is 76%.Rainfall
In September, the rain falls for 11.9 days. Throughout September, 24mm (0.94") of precipitation is accumulated. Throughout the year, in Balham, there are 166.8 rainfall days, and 362mm (14.25") of precipitation is accumulated.Snowfall
May through October are months without snowfall in Balham.Daylight
In September, the average length of the day in Balham is 12h and 38min.On the first day of September in Balham, sunrise is at 6:14 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:40 pm BST.
Sunshine
In September, the average sunshine is 7.1h.UV index
The average daily maximum UV index in September in Balham is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The daily maximum UV index of 4 in September interprets into the following advice:
Heed the precautions - It is counselled to guard against solar damage. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Balham, United Kingdom
- Average high temperature in September: 19.1°C
The warmest month (with the highest average high temperature) is July (22.3°C).
The month with the lowest average high temperature is January (6.8°C).
- Average low temperature in September: 11.3°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is January (2.2°C).
Average pressure in September
Balham, United Kingdom
- Average pressure in September: 1016.9mbar
The month with the highest atmospheric pressure is September (1016.9mbar).
The month with the lowest atmospheric pressure is November (1010.6mbar).
Average wind speed in September
Balham, United Kingdom
- Average wind speed in September: 12.6km/h
The windiest month (with the highest average wind speed) is February (17.3km/h).
The calmest month (with the lowest average wind speed) is September (12.6km/h).
Average humidity in September
Balham, United Kingdom
- Average humidity in September: 76%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is August (72%).
Average rainfall in September
Balham, United Kingdom
- Average rainfall in September: 24mm
The wettest months (with the highest rainfall) are June and December (40mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in September
Balham, United Kingdom
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is February (11.5 days).
Average snowfall in September
Balham, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (15mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Balham, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Balham, United Kingdom
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in September: 7h and 6min
The month with the most sunshine is August (Average sunshine: 7h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in September
Balham, United Kingdom
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is October (15.9 days).
The month with the least sunshine days is June (10.1 days).
Average UV index in September
Balham, United Kingdom
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Balham, United Kingdom
- Average cloud cover in September: 50
The months with the most cloud cover are February and November (Cloud cover 61).
The months with the least cloud cover are April, August and September (Cloud cover 50).
Average visibility in September
Balham, United Kingdom
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (9km).
The month with the lowest visibility is November (8km).
