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
September
Weather in September
Temperature
On the advent of September, Semley's average high-temperature exhibits a minor adjustment to an enjoyable 64.9°F from August's 68.5°F. Throughout the month of September, the nighttime temperature dips to an average of 50.5°F.Humidity
In September, the average relative humidity is 82%.Rainfall
In Semley, in September, it is raining for 11.4 days, with typically 1.02" of accumulated precipitation. In Semley, during the entire year, the rain falls for 165.9 days and collects up to 17.76" of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Semley, the average length of the day in September is 12h and 38min.On the first day of September, sunrise is at 6:22 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 6:48 pm BST.
Sunshine
In September, the average sunshine is 7h.UV index
In September, the average daily maximum UV index in Semley is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Semley?
What is the average humidity in September in Semley?
How much does it rain in Semley in September?
When it does not snow in Semley?
What is the average length of the day in September in Semley?
What time are sunrise and sunset in September in Semley?
How long on average sun shines in September in Semley?
How high is the UV index in September in Semley?
Average temperature in September
Semley, United Kingdom
- Average high temperature in September: 64.9°F
The warmest month (with the highest average high temperature) is July (69.6°F).
The month with the lowest average high temperature is January (44.8°F).
- Average low temperature in September: 50.5°F
The month with the highest average low temperature is August (54.3°F).
The coldest month (with the lowest average low temperature) is January (36°F).
Average pressure in September
Semley, United Kingdom
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are May and September (30.03"Hg).
The month with the lowest atmospheric pressure is November (29.84"Hg).
Average wind speed in September
Semley, United Kingdom
- Average wind speed in September: 8mph
The windiest month (with the highest average wind speed) is February (10.4mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).
Average humidity in September
Semley, United Kingdom
- Average humidity in September: 82%
The month with the highest relative humidity is December (91%).
The month with the lowest relative humidity is July (80%).
Average rainfall in September
Semley, United Kingdom
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is December (2.2").
The driest month (with the least rainfall) is April (0.98").
Average rainfall days in September
Semley, United Kingdom
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is July (15.4 days).
The month with the least rainy days is September (11.4 days).
Average snowfall in September
Semley, United Kingdom
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.43").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Semley, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (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
Semley, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in September: 7h and 0min
The month with the most sunshine is July (Average sunshine: 7h and 54min).
The months with the least sunshine are February and November (Average sunshine: 3h and 42min).
Average sunshine days in September
Semley, United Kingdom
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is September (16.5 days).
The month with the least sunshine days is June (12.2 days).
Average UV index in September
Semley, United Kingdom
- Average UV index in September: 4
The month with the highest UV index is 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
Semley, United Kingdom
- Average cloud cover in September: 50
The month with the most cloud cover is November (Cloud cover 63).
The month with the least cloud cover is September (Cloud cover 50).
Average visibility in September
Semley, United Kingdom
- Average visibility in September: 5mi
The months with the highest visibility are February and March (6mi).
The months with the lowest visibility are January, April, May, June, July, August, September, October, November and December (5mi).
