September weather forecastLes Barthes, France

September

Weather in September

September, the first month of the autumn in Les Barthes, is still a warm month, with an average temperature varying between 13.3°C (55.9°F) and 25°C (77°F).

Temperature

The arrival of September signals a subtle shift in temperature, down from 28.8°C (83.8°F) in August to a still warm 25°C (77°F). The average nighttime temperature in Les Barthes lowers to a moderate 13.3°C (55.9°F) throughout September.

Humidity

In Les Barthes, France, the average relative humidity in September is 67%.

Rainfall

September is the month with the least rainfall in Les Barthes, France. Rain falls for 7 days and accumulates 10mm (0.39") of precipitation.

Snowfall

In Les Barthes, snow does not fall in April through November.

Daylight

In September, the average length of the day in Les Barthes, France, is 12h and 31min.
On the first day of the month, sunrise is at 07:19 and sunset at 20:31. On the last day of September, sunrise is at 07:52 and sunset at 19:37 CEST.

Sunshine

In September, the average sunshine is 8.6h.

UV index

In Les Barthes, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.
Note: A daily maximum UV index of 5 in September translates into the following instructions:
Take necessary precautions - Protection from skin and eye injury is mandatory. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.

Updated: Feb 6, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Les Barthes, in September, the average high-temperature is 25°C (77°F), and the average low-temperature is 13.3°C (55.9°F). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is estimated at 31°C (87.8°F).

In September, the average relative humidity is 67%.

September is the month with the least rainfall in Les Barthes, France. Rain falls for 7 days and accumulates 10mm (0.39") of precipitation.

In Les Barthes, France, in September, it is raining for 7 days, with typically 10mm (0.39") of accumulated precipitation.

In Les Barthes, France, snow does not fall in April through November.

In Les Barthes, the average day length in September is 12h and 31min.

In September, on the first day of the month, sunrise is at 07:19 and sunset at 20:31. On the last day of the month, in Les Barthes, France, sunrise is at 07:52 and sunset at 19:37 CEST.

In September, the average sunshine duration in Les Barthes, France, is 8.6h.

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health risk from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

28.8°C

25°C

20°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

9.7km/h

9.2km/h

11.5km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

8.5

9.6

Average snowfall

0mm

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

20.8

21.4

19.9

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Les Barthes, France

Average high temperature in September: 25°C

The warmest month (with the highest average high temperature) is August (28.8°C).
The month with the lowest average high temperature is January (8.8°C).

Average low temperature in September: 13.3°C

The month with the highest average low temperature is August (15.9°C).
The coldest month (with the lowest average low temperature) is February (2.4°C).

Average pressure in September
Les Barthes, France

Average pressure in September: 1018.3mbar

The month with the highest atmospheric pressure is December (1021.7mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).

Average wind speed in September
Les Barthes, France

Average wind speed in September: 8.7km/h

The windiest month (with the highest average wind speed) is March (12.3km/h).
The calmest month (with the lowest average wind speed) is September (8.7km/h).

Average humidity in September
Les Barthes, France

Average humidity in September: 67%

The months with the highest relative humidity are January and December (85%).
The month with the lowest relative humidity is August (64%).

Average rainfall in September
Les Barthes, France

Average rainfall in September: 10mm

The wettest month (with the highest rainfall) is May (42mm).
The driest month (with the least rainfall) is September (10mm).

Average rainfall days in September
Les Barthes, France

Average rainfall days in September: 7 days

The month with the highest number of rainy days is May (14 days).
The month with the least rainy days is September (7 days).

Average snowfall in September
Les Barthes, France

Average snowfall in September: 0mm

The month with the highest snowfall is January (6mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

Average snowfall days in September
Les Barthes, France

Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (1.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Les Barthes, France

Average daylight in September: 12h and 30min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).

Average sunshine in September: 8h and 36min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).