September weather forecast
Lantheuil, France

September

Weather in September

September, the first month of the autumn in Lantheuil, is still a refreshing month, with an average temperature varying between 12.3°C (54.1°F) and 18.9°C (66°F).

Temperature

Lantheuil registers an average high-temperature of a comfortable 18.9°C (66°F) with the arrival of September, showing minor deviation from the preceding month. Throughout September, the temperature falls to an average low of 12.3°C (54.1°F).

Humidity

August and September, with an average relative humidity of 80%, are the least humid months in Lantheuil.

Rainfall

September is the month with the least rainfall in Lantheuil. Rain falls for 12.9 days and accumulates 27mm (1.06") of precipitation.

Snowfall

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

Daylight

In Lantheuil, France, the average length of the day in September is 12h and 35min.
On the first day of September in Lantheuil, sunrise is at 07:19 and sunset at 20:44. On the last day of the month, sunrise is at 08:01 and sunset at 19:42 CEST.

Sunshine

In Lantheuil, the average sunshine in September is 7.5h.

UV index

In September, the average daily maximum UV index in Lantheuil is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: A daily high UV index of 4 in September leads to these guidelines:
Heed the precautions - Suggestions to avoid sunburn are made. To guard against the harmful effects of the Sun, minimize exposure during midday. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.

Frequently asked questions

What are September temperatures in Lantheuil?
The high-temperature in Lantheuil, France, during September is 18.9°C (66°F) and the low-temperature is 12.3°C (54.1°F).
What is the least humid month in Lantheuil?
The months with the lowest humidity in Lantheuil are August and September, with an average relative humidity of 80%.
What is the average humidity in September in Lantheuil?
In Lantheuil, France, the average relative humidity in September is 80%.
What is the driest month in Lantheuil?
September is the month with the least rainfall in Lantheuil. Rain falls for 12.9 days and accumulates 27mm (1.06") of precipitation.
How much does it rain in Lantheuil in September?
In Lantheuil, France, during September, the rain falls for 12.9 days and regularly aggregates up to 27mm (1.06") of precipitation.
When it does not snow in Lantheuil?
May through October are months without snowfall.
How many hours of daylight does Lantheuil have in September?
In September, the average day length in Lantheuil, France, is 12h and 35min.
What time are sunrise and sunset in September in Lantheuil?
In September, on the first day of the month, sunrise is at 07:19 and sunset at 20:44. On the last day of the month, in Lantheuil, sunrise is at 08:01 and sunset at 19:42 CEST.
How long on average sun shines in September in Lantheuil?
In Lantheuil, the average sunshine duration in September is 7.5h.
What is the UV index intensity in September in Lantheuil?
In Lantheuil, France, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability 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 - Lantheuil, France
Average temperature in September
Lantheuil, France
  • Average high temperature in September: 18.9°C

The warmest month (with the highest average high temperature) is August (20.9°C).
The month with the lowest average high temperature is January (7.6°C).

  • Average low temperature in September: 12.3°C

The month with the highest average low temperature is August (13.7°C).
The coldest month (with the lowest average low temperature) is February (3.7°C).

Average pressure in September - Lantheuil, France
Average pressure in September
Lantheuil, France
  • Average pressure in September: 1018mbar

The month with the highest atmospheric pressure is September (1018mbar).
The month with the lowest atmospheric pressure is November (1012.3mbar).

Average wind speed in September - Lantheuil, France
Average wind speed in September
Lantheuil, France
  • Average wind speed in September: 15.9km/h

The windiest month (with the highest average wind speed) is December (23.2km/h).
The calmest month (with the lowest average wind speed) is August (14.4km/h).

Average humidity in September - Lantheuil, France
Average humidity in September
Lantheuil, France
  • Average humidity in September: 80%

The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are August and September (80%).

Average rainfall in September - Lantheuil, France
Average rainfall in September
Lantheuil, France
  • Average rainfall in September: 27mm

The wettest months (with the highest rainfall) are November and December (59mm).
The driest month (with the least rainfall) is September (27mm).

Average rainfall days in September - Lantheuil, France
Average rainfall days in September
Lantheuil, France
  • Average rainfall days in September: 12.9 days

The month with the highest number of rainy days is January (18.2 days).
The month with the least rainy days is September (12.9 days).

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

The month with the highest snowfall is February (18mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).

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

The month with the highest number of snowfall days is February (2.8 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 - Lantheuil, France
Average daylight in September /
Average sunshine in September
Lantheuil, France
  • Average daylight in September: 12h and 4min

The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 18min).

  • Average sunshine in September: 7h and 3min

The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in September - Lantheuil, France
Average sunshine days in September
Lantheuil, France
  • Average sunshine days in September: 14.8 days

The month with the most sunshine days is September (14.8 days).
The months with the least sunshine days are January, February and November (9.3 days).

Average UV index in September - Lantheuil, France
Average UV index in September
Lantheuil, France
  • Average UV index in September: 4

The months with the highest UV index are 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 - Lantheuil, France
Average cloud cover in September
Lantheuil, France
  • Average cloud cover in September: 40

The months with the most cloud cover are January and November (Cloud cover 59).
The months with the least cloud cover are July, August and September (Cloud cover 40).

Average visibility in September - Lantheuil, France
Average visibility in September
Lantheuil, France
  • Average visibility in September: 10km

The months with the highest visibility are February, March, April, July, August, September, October and December (10km).
The months with the lowest visibility are January, May, June and November (9km).

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