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 snowfall in September
- Average snowfall 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 begins with an average high-temperature of a still enjoyable 16.7°C (62.1°F), reflecting close similarity to the preceding month. Throughout the month of September, Chapel Allerton observes an average nighttime temperature of 9.5°C (49.1°F).Humidity
The average relative humidity in September is 81%.Rainfall
In Chapel Allerton, United Kingdom, in September, during 12.9 rainfall days, 29mm (1.14") of precipitation is typically accumulated. In Chapel Allerton, United Kingdom, during the entire year, the rain falls for 175.8 days and collects up to 408mm (16.06") of precipitation.Snowfall
May through October are months without snowfall.Daylight
In Chapel Allerton, the average length of the day in September is 12h and 41min.On the first day of the month, sunrise is at 6:15 am and sunset at 7:56 pm. On the last day of September, sunrise is at 7:07 am and sunset at 6:44 pm BST.
Sunshine
In Chapel Allerton, the average sunshine in September is 6.9h.UV index
May through September, with an average maximum UV index of 4, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: A daily high UV index of 4 in September leads to these guidelines:
Exercise caution. Those with pale skin may experience burns in less than half an hour. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Chapel Allerton?
What is the average humidity in September in Chapel Allerton?
How many days does it rain in September in Chapel Allerton?
When it does not snow in Chapel Allerton?
What is the average length of the day in September in Chapel Allerton?
What time are sunrise and sunset in September in Chapel Allerton?
How long on average sun shines in September in Chapel Allerton?
When is the highest UV index in Chapel Allerton?
What is the UV index reading in September in Chapel Allerton?
Average temperature in September
Chapel Allerton, United Kingdom
- Average high temperature in September: 16.7°C
The warmest month (with the highest average high temperature) is July (19.5°C).
The month with the lowest average high temperature is January (5.4°C).
- Average low temperature in September: 9.5°C
The month with the highest average low temperature is August (11.8°C).
The coldest month (with the lowest average low temperature) is January (1.4°C).
Average pressure in September
Chapel Allerton, United Kingdom
- Average pressure in September: 1015.4mbar
The month with the highest atmospheric pressure is May (1016.2mbar).
The month with the lowest atmospheric pressure is November (1008.9mbar).
Average wind speed in September
Chapel Allerton, United Kingdom
- Average wind speed in September: 13.5km/h
The windiest month (with the highest average wind speed) is February (17.9km/h).
The calmest month (with the lowest average wind speed) is June (12.5km/h).
Average humidity in September
Chapel Allerton, United Kingdom
- Average humidity in September: 81%
The month with the highest relative humidity is December (89%).
The months with the lowest relative humidity are April, May, July and August (79%).
Average rainfall in September
Chapel Allerton, United Kingdom
- Average rainfall in September: 29mm
The wettest months (with the highest rainfall) are June and July (49mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in September
Chapel Allerton, United Kingdom
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is July (19.9 days).
The month with the least rainy days is February (11.8 days).
Average snowfall in September
Chapel Allerton, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (26mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Chapel Allerton, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.9 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
Chapel Allerton, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 0min).
The month with the shortest days is December (Average daylight: 7h and 30min).
- Average sunshine in September: 6h and 5min
The month with the most sunshine is August (Average sunshine: 7h and 36min).
The months with the least sunshine are February and November (Average sunshine: 4h and 0min).
Average sunshine days in September
Chapel Allerton, United Kingdom
- Average sunshine days in September: 13.3 days
The month with the most sunshine days is December (14.6 days).
The month with the least sunshine days is July (7.7 days).
Average UV index in September
Chapel Allerton, United Kingdom
- Average UV index in September: 4
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Chapel Allerton, United Kingdom
- Average cloud cover in September: 52
The month with the most cloud cover is November (Cloud cover 61).
The month with the least cloud cover is April (Cloud cover 51).
Average visibility in September
Chapel Allerton, United Kingdom
- Average visibility in September: 8km
The months with the highest visibility are February, March, April, May, August and December (9km).
The months with the lowest visibility are January, June, July, September, October and November (8km).
