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
In September, the meteorological conditions change slightly, with the average high-temperature moving from a moderately hot 76.3°F in August to an agreeable 68.7°F. In Grandvaux, the average temperature during the nights of September drops to a cool 50.2°F.Humidity
In September, the average relative humidity in Grandvaux is 79%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.5 days and typically collects 1.22" of precipitation.Snowfall
In Grandvaux, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 33min.On the first day of the month, sunrise is at 07:03 and sunset at 20:21. On the last day of September, sunrise is at 07:40 and sunset at 19:24 CEST.
Sunshine
In Grandvaux, the average sunshine in September is 8.1h.UV index
The average daily maximum UV index in September 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: The average daily UV index of 4 in September transforms into the following instructions:
Be vigilant - Preventing sunburn is recommended. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Grandvaux?
What is the average humidity in September in Grandvaux?
What is the driest month in Grandvaux?
How much does it rain in Grandvaux in September?
When it does not snow in Grandvaux?
Does it snow in Grandvaux in September?
How many hours of daylight does Grandvaux have in September?
When is the sunrise / sunset in September in Grandvaux?
How many hours of sunshine does Grandvaux have in September?
How high is the UV index in September in Grandvaux?
Average temperature in September
Grandvaux, France
- Average high temperature in September: 68.7°F
The warmest month (with the highest average high temperature) is August (76.3°F).
The month with the lowest average high temperature is January (40.6°F).
- Average low temperature in September: 50.2°F
The month with the highest average low temperature is July (56.5°F).
The coldest month (with the lowest average low temperature) is February (31.6°F).
Average pressure in September
Grandvaux, France
- Average pressure in September: 30.08"Hg
The month with the highest atmospheric pressure is December (30.15"Hg).
The months with the lowest atmospheric pressure are April and November (29.99"Hg).
Average wind speed in September
Grandvaux, France
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is February (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Grandvaux, France
- Average humidity in September: 79%
The month with the highest relative humidity is December (89%).
The month with the lowest relative humidity is August (75%).
Average rainfall in September
Grandvaux, France
- Average rainfall in September: 1.22"
The wettest months (with the highest rainfall) are May and June (2.68").
The driest month (with the least rainfall) is September (1.22").
Average rainfall days in September
Grandvaux, France
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is February (12 days).
Average snowfall in September
Grandvaux, France
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Grandvaux, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grandvaux, France
- Average daylight in September: 12h and 3min
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 42min).
- Average sunshine in September: 8h and 1min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The months with the least sunshine are January and December (Average sunshine: 3h and 54min).
Average sunshine days in September
Grandvaux, France
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is June (7.8 days).
Average UV index in September
Grandvaux, 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, October, November and December (UV index 2).
Average cloud cover in September
Grandvaux, France
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Grandvaux, France
- Average visibility in September: 5mi
The month with the highest visibility is August (6mi).
The month with the lowest visibility is November (4mi).
