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 average high-temperature marginally decreases from a moderately hot 27.3°C (81.1°F) in August to a still warm 24°C (75.2°F). Grossa's nighttime temperatures in September settle close to daytime highs at an average of 20.3°C (68.5°F).Humidity
In Grossa, the average relative humidity in September is 69%.Rainfall
In September, the rain falls for 7.6 days. Throughout September, 31mm (1.22") of precipitation is accumulated. Throughout the year, there are 103.1 rainfall days, and 372mm (14.65") of precipitation is accumulated.Snowfall
In Grossa, snow does not fall in January, March through December.Daylight
The average length of the day in September is 12h and 28min.On the first day of September in Grossa, France, sunrise is at 06:51 and sunset at 19:57. On the last day of the month, sunrise is at 07:20 and sunset at 19:07 CEST.
Sunshine
In September, the average sunshine in Grossa is 10h.UV index
In Grossa, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.Note: An average UV index of 6 in September transforms into this advice:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Grossa?
What is the average humidity in September in Grossa?
How much does it rain in Grossa in September?
When it does not snow in Grossa?
What is the average length of the day in September in Grossa?
When is the sunrise / sunset in September in Grossa?
How many hours of sunshine does Grossa have in September?
What is the UV index reading in September in Grossa?
Average temperature in September
Grossa, France
- Average high temperature in September: 24°C
The warmest month (with the highest average high temperature) is August (27.3°C).
The months with the lowest average high temperature are January and February (12.3°C).
- Average low temperature in September: 20.3°C
The month with the highest average low temperature is August (22.5°C).
The coldest month (with the lowest average low temperature) is February (8.8°C).
Average pressure in September
Grossa, France
- Average pressure in September: 1015.5mbar
The month with the highest atmospheric pressure is December (1018.2mbar).
The month with the lowest atmospheric pressure is November (1013.6mbar).
Average wind speed in September
Grossa, France
- Average wind speed in September: 14.9km/h
The windiest months (with the highest average wind speed) are January and December (19.9km/h).
The calmest month (with the lowest average wind speed) is August (12km/h).
Average humidity in September
Grossa, France
- Average humidity in September: 69%
The month with the highest relative humidity is January (74%).
The month with the lowest relative humidity is August (67%).
Average rainfall in September
Grossa, France
- Average rainfall in September: 31mm
The wettest month (with the highest rainfall) is November (74mm).
The driest months (with the least rainfall) are July and August (7mm).
Average rainfall days in September
Grossa, France
- Average rainfall days in September: 7.6 days
The month with the highest number of rainy days is November (13.1 days).
The month with the least rainy days is August (2.5 days).
Average snowfall in September
Grossa, France
- Average snowfall in September: 0mm
The month with the highest snowfall is February (5mm).
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Grossa, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.5 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Grossa, France
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 10h and 0min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).
Average sunshine days in September
Grossa, France
- Average sunshine days in September: 21.3 days
The month with the most sunshine days is August (27.7 days).
The month with the least sunshine days is February (15.4 days).
Average UV index in September
Grossa, France
- Average UV index in September: 6
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and February (UV index 3).
Average cloud cover in September
Grossa, France
- Average cloud cover in September: 17
The month with the most cloud cover is January (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility in September
Grossa, France
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
