September weather forecastLaleham, United Kingdom
September
Weather in September
September, the first month of the autumn in Laleham, is still a comfortable month, with temperature in the range of an average high of 18.8°C (65.8°F) and an average low of 11°C (51.8°F).Temperature
In September, the average high-temperature registers at a comfortable 18.8°C (65.8°F), nearly identical to August's 21.6°C (70.9°F). During the nights in September, an average low-temperature of 11°C (51.8°F) is observed.Humidity
In September, the average relative humidity is 78%.Rainfall
In September, the rain falls for 7 days. Throughout September, 10mm (0.39") of precipitation is accumulated. In Laleham, during the entire year, the rain falls for 109 days and collects up to 156mm (6.14") of precipitation.Snowfall
In Laleham, snow does not fall in April through November.Daylight
The average length of the day in September is 12h and 38min.On the first day of the month, sunrise is at 6:15 am and sunset at 7:47 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:41 pm BST.
Sunshine
In Laleham, United Kingdom, the average sunshine in September is 7.1h.UV index
In September, the average daily maximum UV index in Laleham, United Kingdom, is 4. A UV Index of 3 to 5 symbolizes a medium health hazard 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:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Laleham, United Kingdom
- Average high temperature in September: 18.8°C
The warmest month (with the highest average high temperature) is July (22°C).
The month with the lowest average high temperature is January (6.8°C).
- Average low temperature in September: 11°C
The month with the highest average low temperature is August (13.7°C).
The coldest month (with the lowest average low temperature) is January (1.9°C).
Average pressure in September
Laleham, 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 (1010.5mbar).
Average wind speed in September
Laleham, United Kingdom
- Average wind speed in September: 12.7km/h
The windiest month (with the highest average wind speed) is February (17.5km/h).
The calmest months (with the lowest average wind speed) are July and September (12.7km/h).
Average humidity in September
Laleham, United Kingdom
- Average humidity in September: 78%
The month with the highest relative humidity is December (89%).
The months with the lowest relative humidity are July and August (74%).
Average rainfall in September
Laleham, United Kingdom
- Average rainfall in September: 10mm
The wettest month (with the highest rainfall) is June (21mm).
The driest months (with the least rainfall) are January, March, April and May (9mm).
Average rainfall days in September
Laleham, United Kingdom
- Average rainfall days in September: 7 days
The month with the highest number of rainy days is June (12.3 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in September
Laleham, United Kingdom
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (6mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Laleham, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2 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
Laleham, 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 July (Average sunshine: 7h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in September
Laleham, United Kingdom
- Average sunshine days in September: 19.8 days
The month with the most sunshine days is October (20.2 days).
The months with the least sunshine days are June and July (14.2 days).
Average UV index in September
Laleham, 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, November and December (UV index 2).
Average cloud cover in September
Laleham, United Kingdom
- Average cloud cover in September: 50
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is April (Cloud cover 49).
Average visibility in September
Laleham, 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).
