September weather forecastAintree, United Kingdom
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Aintree, United Kingdom, with an average temperature fluctuating between 11.7°C (53.1°F) and 16.6°C (61.9°F).Temperature
The weather during September records an average high-temperature of a still comfortable 16.6°C (61.9°F), closely mirroring the preceding month. September nights in Aintree, United Kingdom, reveal a minor deviation from daytime highs, with a mean low-temperature of 11.7°C (53.1°F).Humidity
In Aintree, the average relative humidity in September is 80%.Rainfall
In Aintree, United Kingdom, in September, during 13 rainfall days, 29mm (1.14") of precipitation is typically accumulated. Throughout the year, there are 173.2 rainfall days, and 403mm (15.87") of precipitation is accumulated.Snowfall
May through November are months without snowfall.Daylight
The average length of the day in September is 12h and 41min.On the first day of September, sunrise is at 6:22 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:50 pm BST.
Sunshine
In Aintree, United Kingdom, the average sunshine in September is 6.7h.UV index
The months with the highest UV index in Aintree are May through September, with an average maximum UV index of 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Aintree, United Kingdom
- Average high temperature in September: 16.6°C
The warmest months (with the highest average high temperature) are July and August (18.4°C).
The month with the lowest average high temperature is January (7°C).
- Average low temperature in September: 11.7°C
The month with the highest average low temperature is August (13.4°C).
The coldest month (with the lowest average low temperature) is January (3.6°C).
Average pressure in September
Aintree, United Kingdom
- Average pressure in September: 1015.5mbar
The month with the highest atmospheric pressure is May (1016.2mbar).
The month with the lowest atmospheric pressure is November (1008.8mbar).
Average wind speed in September
Aintree, United Kingdom
- Average wind speed in September: 16.2km/h
The windiest month (with the highest average wind speed) is January (21.4km/h).
The calmest month (with the lowest average wind speed) is June (14km/h).
Average humidity in September
Aintree, United Kingdom
- Average humidity in September: 80%
The months with the highest relative humidity are January and December (84%).
The months with the lowest relative humidity are April and May (77%).
Average rainfall in September
Aintree, United Kingdom
- Average rainfall in September: 29mm
The wettest month (with the highest rainfall) is August (46mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in September
Aintree, United Kingdom
- Average rainfall days in September: 13 days
The months with the highest number of rainy days are August and November (16.8 days).
The month with the least rainy days is April (11.3 days).
Average snowfall in September
Aintree, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (25mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Aintree, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.4 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
Aintree, United Kingdom
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in September: 6h and 42min
The month with the most sunshine is April (Average sunshine: 7h and 54min).
The months with the least sunshine are January, November and December (Average sunshine: 3h and 54min).
Average sunshine days in September
Aintree, United Kingdom
- Average sunshine days in September: 14.2 days
The month with the most sunshine days is April (17 days).
The month with the least sunshine days is November (10.5 days).
Average UV index in September
Aintree, 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
Aintree, United Kingdom
- Average cloud cover in September: 53
The month with the most cloud cover is December (Cloud cover 62).
The month with the least cloud cover is April (Cloud cover 47).
Average visibility in September
Aintree, United Kingdom
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (10km).
The months with the lowest visibility are January and July (9km).
