September weather forecastReading, United Kingdom
September
Weather in September
September welcomes the advent of the autumn season in Reading. Weather conditions undergo noticeable change, with temperatures declining and rainfall becoming more prevalent. The heat of the summer significantly dwindles with average high temperatures settling at 18.4°C (65.1°F) and lows at 10.4°C (50.7°F). An increase in windy conditions and a decrease in sunlight hours hint at the changing weather. Despite the alteration in weather conditions, September is still appreciated for its mild and enjoyable weather.Temperature
The shift into September uncovers an average high-temperature of an enjoyable 18.4°C (65.1°F), subtly different from the previous month. In Reading, the average low-temperature during the month of September is a cool 10.4°C (50.7°F).Humidity
The average relative humidity in September in Reading is 81%.Rainfall
September is the month with the least rainfall in Reading. Rain falls for 10.3 days and accumulates 17mm (0.67") of precipitation.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 38min.On the first day of September in Reading, sunrise is at 6:17 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 6:43 pm BST.
Sunshine
In Reading, the average sunshine in September is 7h.UV index
The average daily maximum UV index in September in Reading is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 4 during September leads to these instructions:
Act with care - Obligation to protect against skin and eye damage is highlighted. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Reading, United Kingdom
- Average high temperature in September: 18.4°C
The warmest month (with the highest average high temperature) is July (21.4°C).
The month with the lowest average high temperature is January (6.6°C).
- Average low temperature in September: 10.4°C
The month with the highest average low temperature is August (12.8°C).
The coldest month (with the lowest average low temperature) is January (1.8°C).
Average pressure in September
Reading, 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 (1010.4mbar).
Average wind speed in September
Reading, United Kingdom
- Average wind speed in September: 13.1km/h
The windiest month (with the highest average wind speed) is February (18km/h).
The calmest month (with the lowest average wind speed) is July (13km/h).
Average humidity in September
Reading, United Kingdom
- Average humidity in September: 81%
The month with the highest relative humidity is December (90%).
The months with the lowest relative humidity are July and August (79%).
Average rainfall in September
Reading, United Kingdom
- Average rainfall in September: 17mm
The wettest month (with the highest rainfall) is November (36mm).
The driest month (with the least rainfall) is September (17mm).
Average rainfall days in September
Reading, United Kingdom
- Average rainfall days in September: 10.3 days
The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is September (10.3 days).
Average snowfall in September
Reading, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (11mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Reading, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.9 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
Reading, 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 0min
The month with the most sunshine is July (Average sunshine: 7h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in September
Reading, United Kingdom
- Average sunshine days in September: 17.7 days
The month with the most sunshine days is September (17.7 days).
The month with the least sunshine days is July (11.7 days).
Average UV index in September
Reading, United Kingdom
- Average UV index in September: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Reading, United Kingdom
- Average cloud cover in September: 50
The month with the most cloud cover is November (Cloud cover 63).
The months with the least cloud cover are April and September (Cloud cover 50).
Average visibility in September
Reading, United Kingdom
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September and December (9km).
The months with the lowest visibility are October and November (8km).
