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
Weather in September
Temperature
The advent of September signifies a minor shift to an average high-temperature of a still refreshing 17.4°C (63.3°F), aligning closely with August. Bolton Percy's temperature tends to fall to an average low of 9.7°C (49.5°F) during the nights of September.Humidity
In September, the average relative humidity in Bolton Percy, United Kingdom, is 81%.Rainfall
In Bolton Percy, during September, the rain falls for 12.5 days and regularly aggregates up to 26mm (1.02") of precipitation. In Bolton Percy, United Kingdom, during the entire year, the rain falls for 172.6 days and collects up to 382mm (15.04") of precipitation.Snowfall
May through October are months without snowfall.Daylight
In Bolton Percy, the average length of the day in September is 12h and 41min.On the first day of September in Bolton Percy, sunrise is at 6:14 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:43 pm BST.
Sunshine
In Bolton Percy, the average sunshine in September is 6.9h.UV index
The months with the highest UV index in Bolton Percy are May through September, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average maximum UV index of 4 in September leads to these recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Frequently asked questions
What is the usual temperature for Bolton Percy in September?
What is the average humidity in September in Bolton Percy?
How much does it rain in Bolton Percy in September?
When it does not snow in Bolton Percy?
What is the average length of the day in September in Bolton Percy?
What time are sunrise and sunset in September in Bolton Percy?
How many hours of sunshine does Bolton Percy have in September?
What is the month with the highest UV index in Bolton Percy?
What is the UV index intensity in September in Bolton Percy?
Average temperature in September
Bolton Percy, United Kingdom
- Average high temperature in September: 17.4°C
The warmest month (with the highest average high temperature) is July (20°C).
The month with the lowest average high temperature is January (5.7°C).
- Average low temperature in September: 9.7°C
The month with the highest average low temperature is August (12°C).
The coldest month (with the lowest average low temperature) is January (1.3°C).
Average pressure in September
Bolton Percy, United Kingdom
- Average pressure in September: 1015.3mbar
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
Bolton Percy, United Kingdom
- Average wind speed in September: 12.7km/h
The windiest month (with the highest average wind speed) is February (16.4km/h).
The calmest month (with the lowest average wind speed) is June (11.8km/h).
Average humidity in September
Bolton Percy, United Kingdom
- Average humidity in September: 81%
The month with the highest relative humidity is December (90%).
The month with the lowest relative humidity is August (79%).
Average rainfall in September
Bolton Percy, United Kingdom
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is June (46mm).
The driest month (with the least rainfall) is April (16mm).
Average rainfall days in September
Bolton Percy, United Kingdom
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is February (11.7 days).
Average snowfall in September
Bolton Percy, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (18mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Bolton Percy, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.6 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
Bolton Percy, 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 July (Average sunshine: 7h and 24min).
The months with the least sunshine are February and November (Average sunshine: 3h and 54min).
Average sunshine days in September
Bolton Percy, United Kingdom
- Average sunshine days in September: 13.2 days
The month with the most sunshine days is December (14.6 days).
The month with the least sunshine days is July (9.4 days).
Average UV index in September
Bolton Percy, 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
Bolton Percy, United Kingdom
- Average cloud cover in September: 53
The month with the most cloud cover is November (Cloud cover 62).
The month with the least cloud cover is April (Cloud cover 52).
Average visibility in September
Bolton Percy, United Kingdom
- Average visibility in September: 8km
The months with the highest visibility are February, March, April, May, July and August (9km).
The months with the lowest visibility are January, June, September, October, November and December (8km).
Bolton Percy, United Kingdom
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