September weather forecast
Paris, France

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The Eiffel Tower in Paris, France viewed from River Seine
The Eiffel Tower in Paris, France viewed from River Seine

Weather in September

September in Paris marks the arrival of autumn, carrying hints of cooler temperatures. With only 17mm (0.67") rainfall recorded, the city's weather remains mostly clear and sunny. The city starts to don a gold-brown color palette, with leaves changing colors and summer crowds dwindling. It's an ideal time for those who wish to avoid the summer tourist rush and yet enjoy relatively warm weather. The backdrop of fall adds a unique charm to the city, inviting everyone to indulge in leisurely outdoor activities.

Temperature

In Paris, entering September brings a subtle temperature decrement, reducing from August's moderately hot 24.5°C (76.1°F) to a pleasant 20.9°C (69.6°F). Throughout September in Paris, a steady low-temperature average of 11.8°C (53.2°F) is noted.

Humidity

In September, the average relative humidity is 72%.

Rainfall

September is the month with the least rainfall. Rain falls for 9.3 days and accumulates 17mm (0.67") of precipitation.

Snowfall

April through November are months without snowfall in Paris.

Daylight

The average length of the day in September is 12h and 35min.
On the first day of the month, sunrise is at 07:08 and sunset at 20:32. On the last day of September, sunrise is at 07:49 and sunset at 19:31 CEST.

Sunshine

The average sunshine in September is 7.8h.

UV index

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 4 during September translates into the following directions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
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Frequently asked questions

What is the temperature in September in Paris?

In September, the average high-temperature and low-temperature are 20.9°C (69.6°F) and 11.8°C (53.2°F) respectively.

What is the average humidity in September in Paris?

In September, the average relative humidity in Paris, France, is 72%.

What is the driest month in Paris?

The month with the least rainfall in Paris is September, when the rain falls for 9.3 days and typically collects 17mm (0.67") of precipitation.

How many days does it rain in September in Paris?

In Paris, in September, it is raining for 9.3 days, with typically 17mm (0.67") of accumulated precipitation.

When it does not snow in Paris?

April through November are months without snowfall in Paris, France.

What is the average length of the day in September in Paris?

The average day length in September in Paris is 12h and 35min.

When are sunrise and sunset in September in Paris?

In September, on the first day of the month, sunrise is at 07:08 and sunset at 20:32. On the last day of the month, in Paris, France, sunrise is at 07:49 and sunset at 19:31 CEST.

How long on average sun shines in September in Paris?

In September, the average sunshine duration is 7.8h.

What is the UV index intensity in September in Paris?

The average daily maximum UV index in September in Paris, France, is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
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
Paris, France

Average temperature in September - Paris, France
  • Average high temperature in September: 20.9°C

The warmest month (with the highest average high temperature) is July (24.6°C).
The month with the lowest average high temperature is January (5.9°C).

  • Average low temperature in September: 11.8°C

The month with the highest average low temperature is August (15°C).
The coldest month (with the lowest average low temperature) is January (1.8°C).

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Average pressure in September
Paris, France

Average pressure in September - Paris, France
  • Average pressure in September: 1018.1mbar

The month with the highest atmospheric pressure is December (1018.2mbar).
The month with the lowest atmospheric pressure is November (1013.4mbar).

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Average wind speed in September
Paris, France

Average wind speed in September - Paris, France
  • Average wind speed in September: 10.3km/h

The windiest month (with the highest average wind speed) is February (15.4km/h).
The calmest month (with the lowest average wind speed) is August (9.9km/h).

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Average humidity in September
Paris, France

Average humidity in September - Paris, France
  • Average humidity in September: 72%

The months with the highest relative humidity are January and December (86%).
The month with the lowest relative humidity is August (68%).

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Average rainfall in September
Paris, France

Average rainfall in September - Paris, France
  • Average rainfall in September: 17mm

The wettest month (with the highest rainfall) is December (49mm).
The driest month (with the least rainfall) is September (17mm).

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Average rainfall days in September
Paris, France

Average rainfall days in September - Paris, France
  • Average rainfall days in September: 9.3 days

The month with the highest number of rainy days is January (15.1 days).
The month with the least rainy days is September (9.3 days).

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Average snowfall in September
Paris, France

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

The month with the highest snowfall is January (29mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

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Average snowfall days in September
Paris, France

Average snowfall days in September - Paris, 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 April, May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Paris, France

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

The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).

  • Average sunshine in September: 7h and 5min

The month with the most sunshine is August (Average sunshine: 9h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

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Average sunshine days in September
Paris, France

Average sunshine days in September - Paris, France
  • Average sunshine days in September: 19.1 days

The month with the most sunshine days is September (19.1 days).
The month with the least sunshine days is February (10.7 days).

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Average UV index in September
Paris, France

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

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in September
Paris, France

Average cloud cover in September - Paris, France
  • Average cloud cover in September: 37

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 37).

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Average visibility in September
Paris, France

Average visibility in September - Paris, France
  • Average visibility in September: 9km

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

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Paris, France

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