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
The beginning of September brings a slight decrease in the average high-temperature, transitioning from an agreeable 20.4°C (68.7°F) in August to an enjoyable 16.3°C (61.3°F). Saint-Barthélemy-de-Séchilienne records an average low-temperature of 6.6°C (43.9°F) throughout the month of September.Humidity
In Saint-Barthélemy-de-Séchilienne, the average relative humidity in September is 81%.Rainfall
February, July and September are months with the least rain when the rain falls for 9.5 days and typically aggregates up to 26mm (1.02") of rain.Snowfall
January through June, August through December are months with snowfall in Saint-Barthélemy-de-Séchilienne. In Saint-Barthélemy-de-Séchilienne, France, during September, snow falls for 0.5 days and regularly aggregates up to 1mm (0.04") of snow. Throughout the year, in Saint-Barthélemy-de-Séchilienne, France, there are 69.5 snowfall days, and 1350mm (53.15") of snow is accumulated.Daylight
In September, the average length of the day in Saint-Barthélemy-de-Séchilienne is 12h and 31min.On the first day of the month, sunrise is at 06:59 and sunset at 20:13. On the last day of September, sunrise is at 07:34 and sunset at 19:18 CEST.
Sunshine
In September, the average sunshine in Saint-Barthélemy-de-Séchilienne is 8.6h.UV index
In Saint-Barthélemy-de-Séchilienne, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 3 in September translates into this advice:
Adopt protective measures - It is advised to guard against sun damage. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Saint-Barthélemy-de-Séchilienne?
What is the average humidity in September in Saint-Barthélemy-de-Séchilienne?
What is the driest month in Saint-Barthélemy-de-Séchilienne?
How much does it rain in Saint-Barthélemy-de-Séchilienne in September?
How many days does it snow in September in Saint-Barthélemy-de-Séchilienne?
How many hours of daylight does Saint-Barthélemy-de-Séchilienne have in September?
When is the sunrise / sunset in September in Saint-Barthélemy-de-Séchilienne?
How many hours of sunshine does Saint-Barthélemy-de-Séchilienne have in September?
What is the UV index reading in September in Saint-Barthélemy-de-Séchilienne?
Average temperature in September
Saint-Barthélemy-de-Séchilienne, France
- Average high temperature in September: 16.3°C
The warmest month (with the highest average high temperature) is August (20.4°C).
The month with the lowest average high temperature is January (1°C).
- Average low temperature in September: 6.6°C
The month with the highest average low temperature is August (9.9°C).
The coldest month (with the lowest average low temperature) is February (-6.1°C).
Average pressure in September
Saint-Barthélemy-de-Séchilienne, France
- Average pressure in September: 1017.8mbar
The month with the highest atmospheric pressure is December (1020.6mbar).
The month with the lowest atmospheric pressure is April (1014.9mbar).
Average wind speed in September
Saint-Barthélemy-de-Séchilienne, France
- Average wind speed in September: 7.1km/h
The windiest month (with the highest average wind speed) is February (9.3km/h).
The calmest month (with the lowest average wind speed) is September (7.1km/h).
Average humidity in September
Saint-Barthélemy-de-Séchilienne, France
- Average humidity in September: 81%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is August (75%).
Average rainfall in September
Saint-Barthélemy-de-Séchilienne, France
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is December (57mm).
The driest months (with the least rainfall) are February, July and September (26mm).
Average rainfall days in September
Saint-Barthélemy-de-Séchilienne, France
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is May (13.6 days).
The month with the least rainy days is December (4.2 days).
Average snowfall in September
Saint-Barthélemy-de-Séchilienne, France
- Average snowfall in September: 1mm
The month with the highest snowfall is December (363mm).
The month with the least snowfall is July (0mm).
Average snowfall days in September
Saint-Barthélemy-de-Séchilienne, France
- Average snowfall days in September: 0.5 days
The month with the highest number of snowfall days is January (13 days).
The month with the least snowfall days is July (0 days).
Average daylight in September /
Average sunshine in September
Saint-Barthélemy-de-Séchilienne, France
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 12min).
Average sunshine days in September
Saint-Barthélemy-de-Séchilienne, France
- Average sunshine days in September: 16.7 days
The month with the most sunshine days is October (18.4 days).
The month with the least sunshine days is May (13.2 days).
Average UV index in September
Saint-Barthélemy-de-Séchilienne, France
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Saint-Barthélemy-de-Séchilienne, France
- Average cloud cover in September: 35
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Saint-Barthélemy-de-Séchilienne, France
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (8km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (8km).
