Boulogne-Billancourt Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Boulogne-Billancourt.
Climate overview of Boulogne-Billancourt
The climate in Boulogne-Billancourt, Ile de France, France, is marked by large temperature swings across the seasons, ranging from 26°C (79°F) in August to 8°C (46°F) in February.
With around 744 mm (29 in) of annual rain/snowfall, the city has moderate precipitation levels. December is the wettest month and September the driest. July is the sunniest month, averaging 7.5 hours of sunshine per day.
Boulogne-Billancourt Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Boulogne-Billancourt — and find the best time to visit.
Monthly Temperature in Boulogne-Billancourt
In Boulogne-Billancourt, temperatures differ significantly between summer and winter months. Typically, average maximum daytime temperatures range from a comfortable 26°C (79°F) in August to a chilly 8°C (46°F) in the coolest month, February.
Nights vary from 14°C (57°F) in August to around 2°C (36°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Boulogne-Billancourt
On average, Boulogne-Billancourt receives a reasonable amount of rain/snowfall, with an annual precipitation of 744 mm (29 in). Precipitation levels in Boulogne-Billancourt remain relatively steady throughout the year. December has the most rain, with 75 mm (3 in) over 16 days. In the driest month September, this drops slightly to 53 mm (2.1 in), making the city's climate fairly predictable. For more details, please visit our Boulogne-Billancourt Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Boulogne-Billancourt
For those who appreciate different seasons, Boulogne-Billancourt serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 7.5 hours of sunshine daily, and embrace the darker days in December, offering only 1.9 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Boulogne-Billancourt by Month
The relative humidity is high throughout the year in Boulogne-Billancourt.
The city experiences its highest humidity in November, reaching 84%. In April, the humidity drops to its lowest level at 69%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Boulogne-Billancourt
The mean wind speed varies between 3 m/s (6 knots) and 4 m/s (8 knots) throughout the year. It is lowest in May, June, July, August, September, October and November and highest during January, February, March, April and December. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Boulogne-Billancourt
Frequently asked questions about the climate in Boulogne-Billancourt
What is the best time to visit Boulogne-Billancourt?
May, June, July, August and September typically offer the most optimal weather in Boulogne-Billancourt. In contrast, January, February and December tend to have less optimal conditions.
What temperatures can I expect in Boulogne-Billancourt?
Daytime highs range from 8°C (46°F) in February to 26°C (79°F) in August. Nighttime lows range from 2°C (36°F) to 14°C (57°F). Temperatures vary considerably through the year.
How much rain does Boulogne-Billancourt get?
Annual rainfall is around 744 mm (29 in). December is the wettest month with 75 mm (3 in), while September is the driest with 53 mm (2.1 in).
How sunny is Boulogne-Billancourt?
Boulogne-Billancourt receives around 1,725 hours of sunshine per year. July is the sunniest month with 224 hours, while December is the cloudiest with just 58 hours.
Boulogne-Billancourt 3-Day Forecast
Boulogne-Billancourt 3-Day Forecast
Boulogne-Billancourt on the map
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