Slough monthly weather averages

Average daytime temperature

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

Slough average temperature chart (Celsius) Slough average temperature chart (Fahrenheit)
Average monthly temperatures in Slough (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 6.4 6.8 9.6 12.4 16.2 19.5 21.6 21.2 18.4 14.6 9.7 7.4
°F 43.5 44.2 49.2 54.3 61.2 67 70.8 70.2 65.2 58.3 49.5 45.3

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.

Slough monthly rainfall chart (mm) Slough monthly rainfall chart (inches)
Average monthly rainfall in Slough (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 63 43 55 50 56 56 48 57 57 64 64 67
inches 2.5 1.7 2.2 2 2.2 2.2 1.9 2.3 2.3 2.5 2.5 2.6
Rainy days 18 13 16 15 14 12 11 13 12 14 16 17

Average daily sunshine

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

Slough average daily sunshine chart
Average daily sunshine Slough
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 1.8 2.6 3.8 5.2 6.6 7.2 6.6 6.4 5.2 3.7 2.5 1.7

Day / night temperatures

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

Slough average minimum / maximum temperatures (Celsius) Slough average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Slough (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 0.9 0.9 2.1 3.8 6.8 9.7 11.8 11.6 9.6 7 3.4 1.7
Max °C 6.6 7 9.8 12.6 16.5 19.7 21.8 21.5 18.7 14.8 9.9 7.5
Min °F 33.5 33.5 35.7 38.8 44.2 49.5 53.2 52.8 49.2 44.6 38 35.1
Max °F 38.7 39 42.6 46.8 52.9 58.5 62.2 61.7 57.4 51.6 43.9 40.3

Sea temperature

The graph below shows the average sea temperature.

Slough average sea temperature chart (Celsius) Slough average sea temperature chart (Fahrenheit)
Average sea temperature around Slough in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 8.9 7.9 7.9 9.1 11 13.3 15.5 17 17 15.6 13.2 10.7
°F 48 46.2 46.2 48.4 51.8 55.9 59.9 62.6 62.6 60 55.7 51.3

Wind speed

The graph below shows the average wind speed.

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

Slough relative humidity averages
Average relative humidity in Slough
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
91% 87% 83% 79% 77% 77% 76% 79% 83% 88% 90% 92%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Slough weather stats

Slough weather statistics
Hottest month: July 21.6°C 70.9°F
Driest month: February 43mm 1.7ins
Sunniest month: August 6.4hrs
Coldest month: January 6.4°C 43.5°F
Wettest month: December 67mm 2.6ins
Warmest sea: August 17°C 62.6°F
Map showing location of Slough (51.50949, -0.59541) Slough map pin © Google

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