Guyancourt monthly weather averages

Contents

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Guyancourt

Guyancourt average temperature chart (Celsius) Guyancourt average temperature chart (Fahrenheit)
Average monthly temperatures in Guyancourt (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 5.5 6.8 9.8 13.3 17.1 20.6 22.8 22.4 19.5 14.7 9.2 6
°F 41.9 44.2 49.7 55.9 62.8 69.1 73.1 72.3 67.2 58.5 48.5 42.8

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.

Guyancourt monthly rainfall chart (mm) Guyancourt monthly rainfall chart (inches)
Average monthly rainfall in Guyancourt (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 57 46 53 47 64 52 57 49 55 56 61 57
inches 2.2 1.8 2.1 1.9 2.5 2.1 2.2 1.9 2.2 2.2 2.4 2.2
Rainy days 17 14 16 15 16 12 11 11 12 14 16 16

Average annual rainfall in Guyancourt: 704.033mm (277.2 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Guyancourt

Guyancourt average daily sunshine chart
Average daily sunshine Guyancourt
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 2.1 3.4 4.7 6.3 7 8 8.4 7.8 6.5 4.6 2.9 2

Day / night temperatures

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

Guyancourt average minimum / maximum temperatures (Celsius) Guyancourt average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Guyancourt (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 1 1.3 3 5.2 8.5 11.8 13.6 13 10.9 7.7 3.9 1.7
Max °C 5.6 6.9 10 13.5 17.3 20.9 23.1 22.6 19.8 14.9 9.3 6.1
Min °F 33.8 34.3 37.4 41.3 47.3 53.2 56.4 55.4 51.5 45.9 39 35.1
Max °F 37.9 39.4 43.7 48.7 55.2 61.3 64.9 64 59.5 52.3 43.9 39

Sea temperature

The graph below shows the average sea temperature.

Guyancourt average sea temperature chart (Celsius) Guyancourt average sea temperature chart (Fahrenheit)
Average sea temperature around Guyancourt 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.

Guyancourt average winspeed by month (km/h) Guyancourt average winspeed by month (mph)
Average wind speed in Guyancourt (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 15 16 16 15 14 13 12 12 12 12 14 15
mph 9 10 10 9 9 8 8 7 8 8 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.

Guyancourt relative humidity averages
Average relative humidity in Guyancourt
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
92% 87% 80% 75% 77% 76% 74% 74% 78% 85% 90% 91%

Other monthly averages

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Beta

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Guyancourt weather stats

Guyancourt weather statistics
Hottest month: July 22.8°C 73°F
Driest month: February 46mm 1.8ins
Sunniest month: August 7.8hrs
Coldest month: January 5.5°C 41.9°F
Wettest month: May 64mm 2.5ins
Warmest sea: August 19.3°C 66.7°F
Map showing location of Guyancourt (48.77334, 2.07393) Guyancourt map pin © Google

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