Swanley monthly weather averages

Contents

Average daytime temperature

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

Swanley average temperature chart (Celsius) Swanley average temperature chart (Fahrenheit)
Average monthly temperatures in Swanley (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 6.6 7 9.7 12.3 16.2 19.5 21.6 21.3 18.7 14.8 9.9 7.5
°F 43.8 44.5 49.5 54.2 61.1 67.1 70.9 70.4 65.7 58.7 49.8 45.5

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.

Swanley monthly rainfall chart (mm) Swanley monthly rainfall chart (inches)
Average monthly rainfall in Swanley (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 60 40 49 48 51 50 48 50 58 58 60 62
inches 2.4 1.6 1.9 1.9 2 2 1.9 2 2.3 2.3 2.4 2.4
Rainy days 17 13 15 14 13 11 11 12 12 13 15 15

Average annual rainfall in Swanley: 684.067mm (269.3 inches)

Average daily sunshine

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

Swanley average daily sunshine chart
Average daily sunshine Swanley
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 1.8 2.6 3.7 5 6.6 7 6.5 6.4 5.1 3.8 2.4 1.6

Day / night temperatures

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

Swanley average minimum / maximum temperatures (Celsius) Swanley average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Swanley (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 1.1 1.1 2.3 4.1 6.8 9.9 12 11.7 9.7 7.2 3.6 2
Max °C 6.7 7.1 9.9 12.6 16.4 19.8 21.9 21.6 19 15 10.1 7.7
Min °F 34 34 36.1 39.3 44.2 49.7 53.5 53 49.4 45 38.4 35.5
Max °F 39 39.4 43 46.9 52.9 58.6 62.4 61.9 57.7 52 44.2 40.6

Sea temperature

The graph below shows the average sea temperature.

Swanley average sea temperature chart (Celsius) Swanley average sea temperature chart (Fahrenheit)
Average sea temperature around Swanley in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 8.7 7.7 7.8 9.1 11 13.2 15.5 17.1 17.2 15.7 13.1 10.5
°F 47.6 45.9 46 48.3 51.7 55.8 59.8 62.8 63 60.3 55.6 50.9

Wind speed

The graph below shows the average wind speed.

Swanley average winspeed by month (km/h) Swanley average winspeed by month (mph)
Average wind speed in Swanley (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 17 17 17 16 15 14 13 13 14 14 16 17
mph 11 11 11 10 9 9 8 8 9 9 10 10

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.

Swanley relative humidity averages
Average relative humidity in Swanley
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
90% 87% 83% 80% 79% 78% 78% 80% 84% 88% 90% 91%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Swanley weather stats

Swanley weather statistics
Hottest month: July 21.6°C 70.9°F
Driest month: February 40mm 1.6ins
Sunniest month: August 6.4hrs
Coldest month: January 6.6°C 43.9°F
Wettest month: December 62mm 2.4ins
Warmest sea: September 17.2°C 63°F
Map showing location of Swanley (51.39717, 0.17321) Swanley map pin © Google

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