September weather forecast
Mordelles, France

September

Weather in September

September, the first month of the autumn in Mordelles, is still a pleasant month, with temperature in the range of an average high of 20.8°C (69.4°F) and an average low of 10.8°C (51.4°F).

Temperature

Mordelles observes a minor difference in average high-temperatures between August's 23.1°C (73.6°F) and September's 20.8°C (69.4°F). During the month of September, an average temperature of 10.8°C (51.4°F) is noted during the nights.

Humidity

The months with the lowest humidity are July through September, with an average relative humidity of 78%.

Rainfall

September is the month with the least rainfall. Rain falls for 8.4 days and accumulates 12mm (0.47") of precipitation.

Snowfall

In Mordelles, snow does not fall in May through October.

Daylight

In Mordelles, the average length of the day in September is 12h and 34min.
On the first day of September, sunrise is at 07:26 and sunset at 20:48. On the last day of the month, sunrise is at 08:05 and sunset at 19:48 CEST.

Sunshine

The average sunshine in September is 7.5h.

UV index

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum high UV index of 4 in September translates into the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. A hat with a broad brim is indispensable, filtering out up to half of UV rays.

Frequently asked questions

What are the temperatures in September?
In September, the average high-temperature and low-temperature are 20.8°C (69.4°F) and 10.8°C (51.4°F) respectively.
What is the least humid month?
July through September, with an average relative humidity of 78%, are the least humid months.
What is the average humidity in September?
The average relative humidity in September is 78%.
What is the driest month?
September is the month with the least rainfall. Rain falls for 8.4 days and accumulates 12mm (0.47") of precipitation.
How many days does it rain in September?
In Mordelles, in September, it is raining for 8.4 days, with typically 12mm (0.47") of accumulated precipitation.
When it does not snow?
In Mordelles, snow does not fall in May through October.
What is the average length of the day in September?
In September, the average day length in Mordelles is 12h and 34min.
When are sunrise and sunset in September?
On the first day of September, sunrise is at 07:26 and sunset at 20:48. On the last day of the month, sunrise is at 08:05 and sunset at 19:48 CEST.
How many hours of sunshine does Mordelles have in September?
In Mordelles, the average sunshine duration in September is 7.5h.
What is the UV index intensity in September?
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe 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 - Mordelles, France
Average temperature in September
Mordelles, France
  • Average high temperature in September: 20.8°C

The warmest month (with the highest average high temperature) is August (23.1°C).
The month with the lowest average high temperature is January (8.4°C).

  • Average low temperature in September: 10.8°C

The month with the highest average low temperature is July (12.8°C).
The coldest month (with the lowest average low temperature) is February (2.3°C).

Average pressure in September - Mordelles, France
Average pressure in September
Mordelles, France
  • Average pressure in September: 1018.3mbar

The month with the highest atmospheric pressure is December (1018.4mbar).
The month with the lowest atmospheric pressure is November (1012.9mbar).

Average wind speed in September - Mordelles, France
Average wind speed in September
Mordelles, France
  • Average wind speed in September: 12.1km/h

The windiest month (with the highest average wind speed) is February (17.6km/h).
The calmest month (with the lowest average wind speed) is August (11.7km/h).

Average humidity in September - Mordelles, France
Average humidity in September
Mordelles, France
  • Average humidity in September: 78%

The month with the highest relative humidity is December (88%).
The months with the lowest relative humidity are July, August and September (78%).

Average rainfall in September - Mordelles, France
Average rainfall in September
Mordelles, France
  • Average rainfall in September: 12mm

The wettest month (with the highest rainfall) is June (39mm).
The driest month (with the least rainfall) is September (12mm).

Average rainfall days in September - Mordelles, France
Average rainfall days in September
Mordelles, France
  • Average rainfall days in September: 8.4 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is September (8.4 days).

Average snowfall in September - Mordelles, France
Average snowfall in September
Mordelles, France
  • Average snowfall in September: 0mm

The months with the highest snowfall are February, March, April and December (2mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).

Average snowfall days in September - Mordelles, France
Average snowfall days in September
Mordelles, France
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in September / Average sunshine in September - Mordelles, France
Average daylight in September /
Average sunshine in September
Mordelles, France
  • Average daylight in September: 12h and 4min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in September: 7h and 3min

The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

Average sunshine days in September - Mordelles, France
Average sunshine days in September
Mordelles, France
  • Average sunshine days in September: 18.5 days

The month with the most sunshine days is September (18.5 days).
The month with the least sunshine days is May (12.1 days).

Average UV index in September - Mordelles, France
Average UV index in September
Mordelles, 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 - Mordelles, France
Average cloud cover in September
Mordelles, France
  • Average cloud cover in September: 41

The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 41).

Average visibility in September - Mordelles, France
Average visibility in September
Mordelles, France
  • Average visibility in September: 8km

The months with the highest visibility are January, February, March, April, June, July, October, November and December (9km).
The months with the lowest visibility are May, August and September (8km).

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