Boulogne-Billancourt Weather and Climate: A Comprehensive Guide
The climate in Boulogne-Billancourt is marked by big temperature swings throughout the year.
Temperatures range from warm during the warmest months
to cold in the cooler months.
It maintains moderate precipitation patterns.
Now, let’s explore all the climate details to give you a full picture.
Average maximum day and minimum night temperature
In Boulogne-Billancourt, temperatures differ significantly between summer and winter months. Typically, average maximum daytime temperatures range from a comfortable 26°C in August to a chilly 8°C in the coolest month, February.
Nights are cooler, with lows often dropping to around 2°C during the colder months. Check out our detailed temperature page for more information.Temperature ranges by month
Precipitation and rainy days
On average, Boulogne-Billancourt receives a reasonable amount of rain/snowfall, with an annual precipitation of 744 mm. Precipitation levels in Boulogne-Billancourt remain relatively steady throughout the year. December has the most rain, with 75 mm over 16 days. In September, this drops slightly to 53 mm, making the city's climate fairly predictable.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
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
Average humidity
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%. Explore our detailed page on humidity levels for further details.
Relative humidity over the year
Average wind speed
The mean wind speed varies between 3 m/s and 4 m/s throughout the year. It is lowest in May, June, July, August, September, October and November and highest during January, February, March, April and December.
The mean monthly wind speed over the year (meters per second)
overcast and no rain overcast and no rain clear and no rainForecast for Boulogne-Billancourt
3 m/s
3 m/s
4 m/s
The best time of year to visit Boulogne-Billancourt in France
During the months of May, June, July, August and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.Other facts from our historical weather data:
August has an average maximum temperature of 26°C and is the warmest month of the year.
The coldest month is February with an average maximum temperature of 8°C.
December tops the wettest month list with 75 mm of rainfall.
September is the driest month with 53 mm of precipitation.
July is the sunniest month with an average of 224 hours of sunshine.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
