Long-term weather forecast
Long-term weather forecast

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 55.4°F (13°C) and 69.8°F (21°C) 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 0.6" (15.2mm) precipitation and on average the least rainfall during the year. The humidity rises to an average of 75% to signal impending cold weather.
  • The 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).

  • The 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).

  • The 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).

  • The 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).

  • The average daylight in September: 13h

Months with the longest days are June and July (Average daylight: 16h).
The month with shortest days is December (Average daylight: 8h).

  • The 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).

  • The 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).