Chelsea monthly weather averages

Contents

Average daytime temperature

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

Chelsea average temperature chart (Celsius) Chelsea average temperature chart (Fahrenheit)
Average monthly temperatures in Chelsea (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 6.7 7.2 9.7 12.5 16.3 19.6 21.6 21.2 18.6 14.7 10 7.7
°F 44.1 45 49.5 54.5 61.4 67.2 70.8 70.1 65.5 58.5 50 45.8

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.

Chelsea monthly rainfall chart (mm) Chelsea monthly rainfall chart (inches)
Average monthly rainfall in Chelsea (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 55 37 49 47 52 51 47 55 54 59 59 60
inches 2.2 1.4 1.9 1.8 2 2 1.9 2.2 2.1 2.3 2.3 2.4
Rainy days 17 12 15 14 14 11 11 12 12 13 15 15

Average annual rainfall in Chelsea: 675.667mm (266 inches)

Average daily sunshine

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

Chelsea average daily sunshine chart
Average daily sunshine Chelsea
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 1.9 2.7 3.9 5.4 6.9 7.4 6.8 6.7 5.3 3.9 2.6 1.7

Day / night temperatures

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

Chelsea average minimum / maximum temperatures (Celsius) Chelsea average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Chelsea (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 1.6 1.7 2.7 4.5 7.5 10.4 12.4 12.2 10.2 7.7 4.1 2.4
Max °C 6.9 7.4 9.9 12.7 16.6 19.8 21.8 21.4 18.8 14.9 10.2 7.8
Min °F 34.8 35 36.9 40.1 45.4 50.7 54.3 54 50.4 45.9 39.3 36.3
Max °F 39.6 40.1 43.3 47.5 53.6 59.2 62.8 62.2 58.1 52.3 44.8 41.2

Sea temperature

The graph below shows the average sea temperature.

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

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

Chelsea relative humidity averages
Average relative humidity in Chelsea
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
89% 85% 81% 77% 76% 75% 75% 78% 82% 86% 89% 90%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Chelsea weather stats

Chelsea weather statistics
Hottest month: July 21.6°C 70.9°F
Driest month: February 37mm 1.5ins
Sunniest month: August 6.7hrs
Coldest month: January 6.7°C 44.1°F
Wettest month: December 60mm 2.4ins
Warmest sea: August 17°C 62.6°F
Map showing location of Chelsea (51.48755, -0.16936) Chelsea map pin © Google

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