September weather forecast and climate
Paris, France

The Eiffel Tower in Paris, France viewed from River Seine, with a ship sailing across
The Eiffel Tower in Paris, France viewed from River Seine, with a ship sailing across
September is the transition into autumn but experiences more summer-like weather as opposed to autumn weather. The temperatures remain high and moderately warm and pleasant between 13°C (55.4°F) and 21°C (69.8°F) and may keep dropping as September comes to its close.
The days remain moderately sunny as the sun shines on steadily for eight hours per day on average, and the summer warmth is still felt.
There is a build-up of clouds in the sky in readiness for the fall, making Paris appear strikingly golden and beautiful.
September is the least rainy month of all; hence, most days are moderately dry, but others have wet afternoons with rain falling for up to eleven days. The rain gauge in September collects only 15.2mm (0.6") precipitation and on average, the least rainfall during the year. The humidity rises to an average of 75% to signal impending cold weather.

What is the temperature in September in Paris?

The average high-temperature, in September, in Paris, France, is 21.1°C (70°F), while the average low-temperature is 12.7°C (54.9°F).

How much does it rain in Paris in September?

In September, in Paris, the rain falls for 8.5 days. Throughout September, 54.7mm (2.2") of precipitation is accumulated.
Average temperature in September - Paris, France
  • Average high temperature in September: 21.1°C

The warmest month (with the highest average high temperature) is July (25.2°C).
The month with the lowest average high temperature is January (7.2°C).

  • Average low temperature in September: 12.7°C

The month with the highest average low temperature is July (15.8°C).
The coldest month (with the lowest average low temperature) is January (2.7°C).

Average rainfall in September - Paris, France
  • Average rainfall in September: 54.7mm

The wettest month (with the highest rainfall) is May (65mm).
The driest month (with the lowest rainfall) is August (43mm).

Average rainfall days in September - Paris, France
  • Average rainfall days in September: 8.5 days

The month with the highest number of rainy days is December (10.7 days).
The month with the lowest number of rainy days is August (6.9 days).

Average daylight in September / Average sunshine in September - Paris, France
  • Average daylight in September: 12.6h

The month with the longest days is June (Average daylight: 16.1h).
The month with shortest days is December (Average daylight: 8.3h).

  • Average sunshine in September: 5.6h

Months with most sunshine are July and August (Average sunshine: 6.8h).
The month with least sunshine is December (Average sunshine: 1.7h).

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

Months with the highest UV index are June and July (UV index 7).
Months with the lowest UV index are January, November and December (UV index 1).