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
Weather in September
Temperature
September brings a minor shift in the average high-temperature, adjusting from a warm 24.8°C (76.6°F) in August to an agreeable 20.3°C (68.5°F). In September, the recorded average low-temperature in La Balme-les-Grottes is a fresh 10°C (50°F).Humidity
In September, the average relative humidity in La Balme-les-Grottes is 81%.Rainfall
September is the month with the least rainfall. Rain falls for 14.3 days and accumulates 65mm (2.56") of precipitation.Snowfall
April through September are months without snowfall in La Balme-les-Grottes.Daylight
In La Balme-les-Grottes, the average length of the day in September is 12h and 32min.On the first day of September, sunrise is at 07:00 and sunset at 20:16. On the last day of the month, sunrise is at 07:36 and sunset at 19:20 CEST.
Sunshine
The average sunshine in September is 8.2h.UV index
In La Balme-les-Grottes, France, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the maximum UV index of 4 translates into these guidelines:
Undertake precautions - Obligation exists to protect against skin and eye damage. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Boost your sun resistance with garments that are densely woven yet spacious.
Frequently asked questions
What is the average September temperature in La Balme-les-Grottes?
What is the average humidity in September in La Balme-les-Grottes?
What is the driest month in La Balme-les-Grottes?
How much does it rain in La Balme-les-Grottes in September?
When it does not snow in La Balme-les-Grottes?
Does it snow in La Balme-les-Grottes in September?
What is the average length of the day in September in La Balme-les-Grottes?
When are sunrise and sunset in September in La Balme-les-Grottes?
How long on average sun shines in September in La Balme-les-Grottes?
How high is the UV index in September in La Balme-les-Grottes?
Average temperature in September
La Balme-les-Grottes, France
- Average high temperature in September: 20.3°C
The warmest months (with the highest average high temperature) are July and August (24.8°C).
The month with the lowest average high temperature is January (4.4°C).
- Average low temperature in September: 10°C
The months with the highest average low temperature are July and August (13.4°C).
The coldest months (with the lowest average low temperature) are January and February (-0.9°C).
Average pressure in September
La Balme-les-Grottes, France
- Average pressure in September: 1018.5mbar
The month with the highest atmospheric pressure is December (1021.3mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in September
La Balme-les-Grottes, France
- Average wind speed in September: 7.7km/h
The windiest month (with the highest average wind speed) is February (10.6km/h).
The calmest month (with the lowest average wind speed) is August (7.5km/h).
Average humidity in September
La Balme-les-Grottes, France
- Average humidity in September: 81%
The months with the highest relative humidity are November and December (87%).
The month with the lowest relative humidity is August (76%).
Average rainfall in September
La Balme-les-Grottes, France
- Average rainfall in September: 65mm
The wettest months (with the highest rainfall) are May and December (112mm).
The driest month (with the least rainfall) is September (65mm).
Average rainfall days in September
La Balme-les-Grottes, France
- Average rainfall days in September: 14.3 days
The month with the highest number of rainy days is May (19.9 days).
The month with the least rainy days is February (12.8 days).
Average snowfall in September
La Balme-les-Grottes, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (79mm).
The months with the least snowfall are April, May, June, July, August and September (0mm).
Average snowfall days in September
La Balme-les-Grottes, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are April, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
La Balme-les-Grottes, France
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The months with the least sunshine are January and December (Average sunshine: 4h and 12min).
Average sunshine days in September
La Balme-les-Grottes, France
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is October (15.5 days).
The month with the least sunshine days is June (8.9 days).
Average UV index in September
La Balme-les-Grottes, France
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
La Balme-les-Grottes, France
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
La Balme-les-Grottes, France
- Average visibility in September: 8km
The month with the highest visibility is August (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, September, October, November and December (8km).
La Balme-les-Grottes, France
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