September weather forecast
Modane, France

September

Weather in September

September, the first month of the autumn in Modane, is still a mild month, with temperature in the range of an average low of 3.5°C (38.3°F) and an average high of 13.1°C (55.6°F).

Temperature

The arrival of September corresponds with a minor reduction in the average high-temperature, down from August's enjoyable 17°C (62.6°F) to a still refreshing 13.1°C (55.6°F). An average low-temperature of 3.5°C (38.3°F) marks the nights throughout September.

Humidity

The average relative humidity in September is 78%.

Rainfall

The months with the least rainfall are January and September Rain falls for 11.2 days and accumulates 18mm (0.71") of rain.

Snowfall

Months with snowfall in Modane are January through December. In September, in Modane, it is snowing for 2 days. Throughout September, 12mm (0.47") of snow is accumulated. In Modane, France, during the entire year, snow falls for 101.3 days and aggregates up to 1617mm (63.66") of snow.

Daylight

In September, the average length of the day in Modane is 12h and 32min.
On the first day of September in Modane, sunrise is at 06:55 and sunset at 20:10. On the last day of the month, sunrise is at 07:30 and sunset at 19:15 CEST.

Sunshine

In September, the average sunshine in Modane is 9h.

UV index

In Modane, France, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.
Note: The maximum UV index, 3 during September, leads to the following recommendations:
Undertake precautions - It is suggested to shield oneself from sunburn. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.

Frequently asked questions

What is the temperature in September in Modane?
The high-temperature in Modane, France, during September is 13.1°C (55.6°F) and the low-temperature is 3.5°C (38.3°F).
What is the average humidity in September in Modane?
In Modane, France, the average relative humidity in September is 78%.
What is the driest month in Modane?
January and September are months with the least rain in Modane, France, when the rain falls for 11.2 days and typically aggregates up to 18mm (0.71") of rain.
How many days does it rain in September in Modane?
In Modane, in September, during 11.2 rainfall days, 18mm (0.71") of precipitation is typically accumulated.
How many days does it snow in September in Modane?
In Modane, in September, snow falls for 2 days, with typically accumulated 12mm (0.47") of snow.
What is the average length of the day in September in Modane?
In Modane, the average day length in September is 12h and 32min.
When is the sunrise / sunset in September in Modane?
In September, on the first day of the month, sunrise is at 06:55 and sunset at 20:10. On the last day of the month, in Modane, France, sunrise is at 07:30 and sunset at 19:15 CEST.
How many hours of sunshine does Modane have in September?
The average sunshine duration in September in Modane is 9h.
How high is the UV index in September in Modane?
In Modane, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health threat from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September
Modane, France
  • Average high temperature in September: 13.1°C

The warmest month (with the highest average high temperature) is August (17°C).
The month with the lowest average high temperature is January (-2.3°C).

  • Average low temperature in September: 3.5°C

The month with the highest average low temperature is August (5.8°C).
The coldest month (with the lowest average low temperature) is January (-12°C).

Average pressure in September
Modane, France
  • Average pressure in September: 1017.7mbar

The month with the highest atmospheric pressure is December (1020.5mbar).
The month with the lowest atmospheric pressure is April (1014.8mbar).

Average wind speed in September
Modane, France
  • Average wind speed in September: 6km/h

The windiest month (with the highest average wind speed) is November (8.1km/h).
The calmest month (with the lowest average wind speed) is September (6km/h).

Average humidity in September
Modane, France
  • Average humidity in September: 78%

The month with the highest relative humidity is March (90%).
The month with the lowest relative humidity is August (73%).

Average rainfall in September
Modane, France
  • Average rainfall in September: 18mm

The wettest months (with the highest rainfall) are November and December (45mm).
The driest months (with the least rainfall) are January and September (18mm).

Average rainfall days in September
Modane, France
  • Average rainfall days in September: 11.2 days

The month with the highest number of rainy days is June (13.7 days).
The month with the least rainy days is December (3.5 days).

Average snowfall in September
Modane, France
  • Average snowfall in September: 12mm

The month with the highest snowfall is November (317mm).
The month with the least snowfall is July (2mm).

Average snowfall days in September
Modane, France
  • Average snowfall days in September: 2 days

The months with the highest number of snowfall days are February and November (13.7 days).
The months with the least snowfall days are July and August (0.8 days).

Average daylight in September /
Average sunshine in September
Modane, 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: 9h and 0min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).

Average sunshine days in September
Modane, France
  • Average sunshine days in September: 15.3 days

The month with the most sunshine days is December (20.2 days).
The month with the least sunshine days is June (12.1 days).

Average UV index in September
Modane, France
  • Average UV index in September: 3

The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are January and February (UV index 1).

Average cloud cover in September
Modane, France
  • Average cloud cover in September: 34

The month with the most cloud cover is May (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in September
Modane, France
  • Average visibility in September: 8km

The month with the highest visibility is August (9km).
The months with the lowest visibility are January and February (6km).

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