London monthly weather averages

Contents

What's the weather like in London?

London has a temperate climate, which means that it has cool winters, warm summers, and plenty of rainfall. Oh, and did we mention it rains a lot!

Summers in London are generally warm and humid with average temperatures ranging from 17 to 21 degrees Celsius (62 to 70 degrees Fahrenheit). Winters are generally mild, with an average temperature range of 5 to 8 degrees Celsius (41 to 46 degrees Fahrenheit) with temperatures rarely dropping below freezing. Rainfall is common throughout the year, with April, May, and June being statistically drier. Snow is quite rare, but does occur occasionally. 

London is known for its sudden changes in weather, so it's important to be prepared for all kinds of conditions. The best time to visit London is during the spring and summer months when temperatures are warm and rainfall is at its lowest. However, London is a beautiful city to visit any time of year, and the weather is rarely a reason to stay away.

Average daytime temperature

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

London average temperature chart (Celsius) London average temperature chart (Fahrenheit)
Average monthly temperatures in London (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 6.8 7.2 9.8 12.6 16.4 19.7 21.7 21.4 18.7 14.9 10 7.7
°F 44.2 44.9 49.7 54.6 61.6 67.4 71.1 70.5 65.6 58.8 49.9 45.9

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.

London monthly rainfall chart (mm) London monthly rainfall chart (inches)
Average monthly rainfall in London (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 55 38 49 47 52 52 49 56 55 58 59 59
inches 2.2 1.5 1.9 1.9 2 2.1 1.9 2.2 2.2 2.3 2.3 2.3
Rainy days 16 12 14 14 13 11 10 11 11 13 15 14

Average annual rainfall in London: 679mm (267.3 inches)

Average daily sunshine

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

London average daily sunshine chart
Average daily sunshine London
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 1.9 2.6 3.8 5.2 6.6 7 6.6 6.5 5.2 3.9 2.5 1.7

Day / night temperatures

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

London average minimum / maximum temperatures (Celsius) London average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in London (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 1.7 1.7 3 4.7 7.8 10.7 12.9 12.6 10.6 8.2 4.3 2.6
Max °C 6.9 7.3 10 12.8 16.7 19.9 22 21.6 18.9 15.1 10.1 7.9
Min °F 35.1 35.1 37.4 40.4 46 51.3 55.1 54.7 51 46.7 39.7 36.6
Max °F 39.7 40.1 43.7 47.7 54 59.5 63.3 62.8 58.5 52.9 45 41.4

Sea temperature

The graph below shows the average sea temperature.

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

London average winspeed by month (km/h) London average winspeed by month (mph)
Average wind speed in London (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 13 13 16 16
mph 10 10 10 10 9 9 8 8 8 8 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.

London relative humidity averages
Average relative humidity in London
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
88% 85% 80% 77% 75% 74% 74% 76% 80% 85% 88% 90%
London

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

London weather stats

London weather statistics
Hottest month: July 21.7°C 71.1°F
Driest month: February 38mm 1.5ins
Sunniest month: August 6.5hrs
Coldest month: January 6.8°C 44.2°F
Wettest month: December 59mm 2.3ins
Warmest sea: August 17°C 62.6°F
Map showing location of London (51.50853, -0.12574) London map pin © Google

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