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 advent of September reveals an average high-temperature of an agreeable 21.8°C (71.2°F), showing minimal difference from the prior month. An average minimum temperature of 12°C (53.6°F) marks the month of September.Humidity
August and September, with an average relative humidity of 74%, are the least humid months in Saint-Philbert-de-Grand-Lieu.Rainfall
September is the month with the least rainfall. Rain falls for 8.2 days and accumulates 21mm (0.83") of precipitation.Snowfall
March, May through October and December are months without snowfall.Daylight
In Saint-Philbert-de-Grand-Lieu, France, the average length of the day in September is 12h and 34min.On the first day of the month, sunrise is at 07:26 and sunset at 20:46. On the last day of September, sunrise is at 08:04 and sunset at 19:48 CEST.
Sunshine
The average sunshine in September in Saint-Philbert-de-Grand-Lieu is 8.1h.UV index
In Saint-Philbert-de-Grand-Lieu, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: An average maximum UV index of 4 in September leads to these recommendations:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Saint-Philbert-de-Grand-Lieu?
What are the least humid months in Saint-Philbert-de-Grand-Lieu?
What is the average humidity in September in Saint-Philbert-de-Grand-Lieu?
What is the driest month in Saint-Philbert-de-Grand-Lieu?
How much does it rain in Saint-Philbert-de-Grand-Lieu in September?
When it does not snow in Saint-Philbert-de-Grand-Lieu?
What is the average length of the day in September in Saint-Philbert-de-Grand-Lieu?
When is the sunrise / sunset in September in Saint-Philbert-de-Grand-Lieu?
How many hours of sunshine does Saint-Philbert-de-Grand-Lieu have in September?
What is the UV index intensity in September in Saint-Philbert-de-Grand-Lieu?
Average temperature in September
Saint-Philbert-de-Grand-Lieu, France
- Average high temperature in September: 21.8°C
The warmest month (with the highest average high temperature) is August (24.3°C).
The month with the lowest average high temperature is January (8.9°C).
- Average low temperature in September: 12°C
The months with the highest average low temperature are July and August (14°C).
The coldest month (with the lowest average low temperature) is February (2.9°C).
Average pressure in September
Saint-Philbert-de-Grand-Lieu, France
- Average pressure in September: 1018.3mbar
The month with the highest atmospheric pressure is December (1019.2mbar).
The month with the lowest atmospheric pressure is November (1013.5mbar).
Average wind speed in September
Saint-Philbert-de-Grand-Lieu, France
- Average wind speed in September: 12.4km/h
The windiest month (with the highest average wind speed) is February (18km/h).
The calmest month (with the lowest average wind speed) is August (11.8km/h).
Average humidity in September
Saint-Philbert-de-Grand-Lieu, France
- Average humidity in September: 74%
The months with the highest relative humidity are January and December (86%).
The months with the lowest relative humidity are August and September (74%).
Average rainfall in September
Saint-Philbert-de-Grand-Lieu, France
- Average rainfall in September: 21mm
The wettest month (with the highest rainfall) is December (66mm).
The driest month (with the least rainfall) is September (21mm).
Average rainfall days in September
Saint-Philbert-de-Grand-Lieu, France
- Average rainfall days in September: 8.2 days
The month with the highest number of rainy days is January (16.3 days).
The month with the least rainy days is September (8.2 days).
Average snowfall in September
Saint-Philbert-de-Grand-Lieu, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (2mm).
The months with the least snowfall are March, May, June, July, August, September, October and December (0mm).
Average snowfall days in September
Saint-Philbert-de-Grand-Lieu, France
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.5 days).
The months with the least snowfall days are March, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Saint-Philbert-de-Grand-Lieu, France
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in September
Saint-Philbert-de-Grand-Lieu, France
- Average sunshine days in September: 20.2 days
The month with the most sunshine days is September (20.2 days).
The month with the least sunshine days is November (11.6 days).
Average UV index in September
Saint-Philbert-de-Grand-Lieu, France
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Saint-Philbert-de-Grand-Lieu, France
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is September (Cloud cover 34).
Average visibility in September
Saint-Philbert-de-Grand-Lieu, France
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
