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 arrival of September records an average high-temperature of a moderate 15.6°C (60.1°F), closely related to the 17.8°C (64°F) observed in August. In Ilkley, the expected average low-temperature for September is a frosty 8.5°C (47.3°F).Humidity
In September, the average relative humidity in Ilkley is 86%.Rainfall
In Ilkley, in September, during 14.1 rainfall days, 32mm (1.26") of precipitation is typically accumulated. In Ilkley, during the entire year, the rain falls for 187.4 days and collects up to 494mm (19.45") of precipitation.Snowfall
In Ilkley, snow does not fall in June through October.Daylight
In September, the average length of the day in Ilkley is 12h and 41min.On the first day of the month, sunrise is at 6:16 am and sunset at 7:57 pm. On the last day of September, in Ilkley, sunrise is at 7:08 am and sunset at 6:45 pm BST.
Sunshine
In September, the average sunshine is 6.2h.UV index
In Ilkley, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: A daily maximum UV index of 3 in September translates into the following instructions:
Ensure safety - Sun damage prevention is strongly urged. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Frequently asked questions
What is the usual temperature for Ilkley in September?
What is the average humidity in September in Ilkley?
How many days does it rain in September in Ilkley?
When it does not snow in Ilkley?
How many hours of daylight does Ilkley have in September?
What time are sunrise and sunset in September in Ilkley?
How many hours of sunshine does Ilkley have in September?
What is the UV index intensity in September in Ilkley?
Average temperature in September
Ilkley, United Kingdom
- Average high temperature in September: 15.6°C
The warmest month (with the highest average high temperature) is July (18.3°C).
The month with the lowest average high temperature is January (4.8°C).
- Average low temperature in September: 8.5°C
The month with the highest average low temperature is August (10.7°C).
The coldest month (with the lowest average low temperature) is January (0.9°C).
Average pressure in September
Ilkley, 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
Ilkley, United Kingdom
- Average wind speed in September: 13.9km/h
The windiest month (with the highest average wind speed) is February (18.8km/h).
The calmest months (with the lowest average wind speed) are June and July (13km/h).
Average humidity in September
Ilkley, United Kingdom
- Average humidity in September: 86%
The months with the highest relative humidity are November and December (91%).
The months with the lowest relative humidity are April and May (82%).
Average rainfall in September
Ilkley, United Kingdom
- Average rainfall in September: 32mm
The wettest month (with the highest rainfall) is November (51mm).
The driest month (with the least rainfall) is April (21mm).
Average rainfall days in September
Ilkley, United Kingdom
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is July (18.9 days).
The month with the least rainy days is February (12.5 days).
Average snowfall in September
Ilkley, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (41mm).
The months with the least snowfall are June, July, August, September and October (0mm).
Average snowfall days in September
Ilkley, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Ilkley, 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 1min
The month with the most sunshine is July (Average sunshine: 6h and 48min).
The months with the least sunshine are February and November (Average sunshine: 3h and 24min).
Average sunshine days in September
Ilkley, United Kingdom
- Average sunshine days in September: 10.5 days
The month with the most sunshine days is March (13.2 days).
The month with the least sunshine days is August (6.8 days).
Average UV index in September
Ilkley, United Kingdom
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Ilkley, United Kingdom
- Average cloud cover in September: 59
The month with the most cloud cover is November (Cloud cover 67).
The month with the least cloud cover is April (Cloud cover 55).
Average visibility in September
Ilkley, United Kingdom
- Average visibility in September: 8km
The months with the highest visibility are March, April and May (9km).
The months with the lowest visibility are January, February, June, July, August, September, October, November and December (8km).
Ilkley, United Kingdom
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