Boulogne-Billancourt monthly weather averages

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Boulogne-Billancourt

Boulogne-Billancourt average temperature chart (Celsius) Boulogne-Billancourt average temperature chart (Fahrenheit)
Average monthly temperatures in Boulogne-Billancourt (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 5.8 7.2 10.4 13.8 17.6 21 23.3 23 20 15.3 9.6 6.4
°F 42.5 45 50.7 56.8 63.8 69.9 74 73.4 68.1 59.6 49.2 43.6

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Boulogne-Billancourt monthly rainfall chart (mm) Boulogne-Billancourt monthly rainfall chart (inches)
Average monthly rainfall in Boulogne-Billancourt (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 55 46 51 46 62 55 55 50 56 56 59 55
inches 2.2 1.8 2 1.8 2.4 2.2 2.2 2 2.2 2.2 2.3 2.2
Rainy days 17 14 16 15 16 13 11 11 12 14 16 16

Average annual rainfall in Boulogne-Billancourt: 696mm (274 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Boulogne-Billancourt

Boulogne-Billancourt average daily sunshine chart
Average daily sunshine Boulogne-Billancourt
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 2.1 3.5 4.7 6.3 7 8 8.4 7.9 6.5 4.7 2.9 2

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Boulogne-Billancourt average minimum / maximum temperatures (Celsius) Boulogne-Billancourt average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Boulogne-Billancourt (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 1.5 1.9 3.7 5.8 9.2 12.4 14.3 13.8 11.6 8.5 4.5 2.3
Max °C 6 7.4 10.6 14 17.9 21.3 23.6 23.2 20.3 15.5 9.7 6.6
Min °F 34.6 35.3 38.6 42.4 48.5 54.2 57.7 56.8 52.8 47.3 40.1 36.1
Max °F 38.7 40.3 44.8 49.8 56.3 62.2 66 65.3 60.6 53.6 44.8 39.9

Sea temperature

The graph below shows the average sea temperature.

Boulogne-Billancourt average sea temperature chart (Celsius) Boulogne-Billancourt average sea temperature chart (Fahrenheit)
Average sea temperature around Boulogne-Billancourt in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 9.6 8.7 8.9 10.3 12.7 15.5 17.9 19.3 18.6 16.4 13.7 11.3
°F 49.3 47.7 48 50.5 54.8 60 64.3 66.7 65.4 61.6 56.7 52.3

Wind speed

The graph below shows the average wind speed.

Boulogne-Billancourt average winspeed by month (km/h) Boulogne-Billancourt average winspeed by month (mph)
Average wind speed in Boulogne-Billancourt (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 15 15 15 15 13 13 12 12 12 12 14 14
mph 9 9 9 9 8 8 7 7 7 7 9 9

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Boulogne-Billancourt relative humidity averages
Average relative humidity in Boulogne-Billancourt
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
92% 87% 80% 74% 76% 75% 73% 74% 78% 85% 90% 91%

Other monthly averages

UV index Best time to go?

Boulogne-Billancourt weather stats

Boulogne-Billancourt weather statistics
Hottest month: July 23.3°C 73.9°F
Driest month: February 46mm 1.8ins
Sunniest month: August 7.9hrs
Coldest month: January 5.8°C 42.4°F
Wettest month: May 62mm 2.4ins
Warmest sea: August 19.3°C 66.7°F
Map showing location of Boulogne-Billancourt (48.83333, 2.25) Boulogne-Billancourt map pin © Google

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