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 enjoyable 17.4°C (63.3°F), aligning closely with August. During September nights, Clifton witnesses a consistent average temperature of 9.8°C (49.6°F).Humidity
In September, the average relative humidity in Clifton is 82%.Rainfall
In Clifton, in September, it is raining for 9.5 days, with typically 21mm (0.83") of accumulated precipitation. Throughout the year, in Clifton, there are 151.2 rainfall days, and 325mm (12.8") of precipitation is accumulated.Snowfall
In Clifton, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 40min.On the first day of September, sunrise is at 6:15 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:43 pm BST.
Sunshine
The average sunshine in September in Clifton is 6.9h.UV index
The months with the highest UV index in Clifton are May through September, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Frequently asked questions
What is the average September temperature in Clifton?
What is the average humidity in September in Clifton?
How many days does it rain in September in Clifton?
When it does not snow in Clifton?
How many hours of daylight does Clifton have in September?
What time are sunrise and sunset in September in Clifton?
How long on average sun shines in September in Clifton?
What are the months with the highest UV index in Clifton?
How high is the UV index in September in Clifton?
Average temperature in September
Clifton, United Kingdom
- Average high temperature in September: 17.4°C
The warmest month (with the highest average high temperature) is July (20.3°C).
The month with the lowest average high temperature is January (5.8°C).
- Average low temperature in September: 9.8°C
The month with the highest average low temperature is August (12.2°C).
The coldest month (with the lowest average low temperature) is January (1.3°C).
Average pressure in September
Clifton, United Kingdom
- Average pressure in September: 1016mbar
The month with the highest atmospheric pressure is May (1016.4mbar).
The month with the lowest atmospheric pressure is November (1009.5mbar).
Average wind speed in September
Clifton, United Kingdom
- Average wind speed in September: 13.5km/h
The windiest month (with the highest average wind speed) is February (18.5km/h).
The calmest month (with the lowest average wind speed) is July (12.8km/h).
Average humidity in September
Clifton, United Kingdom
- Average humidity in September: 82%
The months with the highest relative humidity are January and December (90%).
The month with the lowest relative humidity is August (79%).
Average rainfall in September
Clifton, United Kingdom
- Average rainfall in September: 21mm
The wettest month (with the highest rainfall) is June (42mm).
The driest months (with the least rainfall) are January, March and April (19mm).
Average rainfall days in September
Clifton, United Kingdom
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is September (9.5 days).
Average snowfall in September
Clifton, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (23mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Clifton, 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
Clifton, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 48min).
The month with the shortest days is December (Average daylight: 7h and 42min).
- Average sunshine in September: 6h and 5min
The month with the most sunshine is August (Average sunshine: 7h and 30min).
The months with the least sunshine are February and November (Average sunshine: 3h and 54min).
Average sunshine days in September
Clifton, United Kingdom
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is December (18.1 days).
The month with the least sunshine days is July (9.9 days).
Average UV index in September
Clifton, 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
Clifton, 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 September (Cloud cover 52).
Average visibility in September
Clifton, 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).
Clifton, United Kingdom
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