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
September brings a slight decrease in the average high-temperature, shifting from a moderately hot 23.3°C (73.9°F) in August to an agreeable 20.2°C (68.4°F). An average low-temperature of 10.8°C (51.4°F) is anticipated throughout the nights during September.Humidity
In Le Plessis-Sainte-Opportune, the average relative humidity in September is 77%.Rainfall
The month with the least rainfall in Le Plessis-Sainte-Opportune is September, when the rain falls for 9.7 days and typically collects 19mm (0.75") of precipitation.Snowfall
In Le Plessis-Sainte-Opportune, snow does not fall in May through October.Daylight
The average length of the day in September is 12h and 35min.On the first day of the month, sunrise is at 07:13 and sunset at 20:39. On the last day of September, sunrise is at 07:55 and sunset at 19:37 CEST.
Sunshine
In September, the average sunshine in Le Plessis-Sainte-Opportune is 7.4h.UV index
The average daily maximum UV index in September in Le Plessis-Sainte-Opportune is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum UV index of 4 in September translates into the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. When the Sun is at its strongest around midday, find shade and limit exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Le Plessis-Sainte-Opportune?
What is the average humidity in September in Le Plessis-Sainte-Opportune?
What is the driest month in Le Plessis-Sainte-Opportune?
How much does it rain in Le Plessis-Sainte-Opportune in September?
When it does not snow in Le Plessis-Sainte-Opportune?
How many hours of daylight does Le Plessis-Sainte-Opportune have in September?
When are sunrise and sunset in September in Le Plessis-Sainte-Opportune?
How many hours of sunshine does Le Plessis-Sainte-Opportune have in September?
What is the UV index reading in September in Le Plessis-Sainte-Opportune?
Average temperature in September
Le Plessis-Sainte-Opportune, France
- Average high temperature in September: 20.2°C
The warmest month (with the highest average high temperature) is August (23.3°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in September: 10.8°C
The month with the highest average low temperature is August (13.2°C).
The coldest months (with the lowest average low temperature) are January and February (1.3°C).
Average pressure in September
Le Plessis-Sainte-Opportune, France
- Average pressure in September: 1018.1mbar
The month with the highest atmospheric pressure is September (1018.1mbar).
The month with the lowest atmospheric pressure is November (1012.9mbar).
Average wind speed in September
Le Plessis-Sainte-Opportune, France
- Average wind speed in September: 11.6km/h
The windiest month (with the highest average wind speed) is February (17.4km/h).
The calmest month (with the lowest average wind speed) is August (11.2km/h).
Average humidity in September
Le Plessis-Sainte-Opportune, France
- Average humidity in September: 77%
The months with the highest relative humidity are January and December (88%).
The month with the lowest relative humidity is August (74%).
Average rainfall in September
Le Plessis-Sainte-Opportune, France
- Average rainfall in September: 19mm
The wettest month (with the highest rainfall) is June (48mm).
The driest month (with the least rainfall) is September (19mm).
Average rainfall days in September
Le Plessis-Sainte-Opportune, France
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is January (14.8 days).
The month with the least rainy days is September (9.7 days).
Average snowfall in September
Le Plessis-Sainte-Opportune, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (21mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Le Plessis-Sainte-Opportune, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.8 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
Le Plessis-Sainte-Opportune, France
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in September: 7h and 2min
The months with the most sunshine are June and July (Average sunshine: 9h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Le Plessis-Sainte-Opportune, France
- Average sunshine days in September: 17.8 days
The month with the most sunshine days is September (17.8 days).
The month with the least sunshine days is January (11.6 days).
Average UV index in September
Le Plessis-Sainte-Opportune, France
- 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
Le Plessis-Sainte-Opportune, France
- Average cloud cover in September: 41
The month with the most cloud cover is November (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 41).
Average visibility in September
Le Plessis-Sainte-Opportune, France
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, July, August, September, October and December (9km).
The months with the lowest visibility are January, May, June and November (8km).
