Charlestown monthly weather averages

Contents

Average daytime temperature

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

Charlestown average temperature chart (Celsius) Charlestown average temperature chart (Fahrenheit)
Average monthly temperatures in Charlestown (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 27.9 27.8 26.5 24.3 21.1 18 17.7 19.1 21.5 23.8 25.3 27.7
°F 82.3 82 79.6 75.7 70 64.4 63.8 66.4 70.7 74.8 77.5 81.9

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.

Charlestown monthly rainfall chart (mm) Charlestown monthly rainfall chart (inches)
Average monthly rainfall in Charlestown (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 114 121 128 107 100 129 59 69 55 84 79 84
inches 4.5 4.8 5 4.2 3.9 5.1 2.3 2.7 2.2 3.3 3.1 3.3
Rainy days 12 12 13 11 11 11 9 10 10 11 12 10

Average annual rainfall in Charlestown: 1245.233mm (490.2 inches)

Average daily sunshine

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

Charlestown average daily sunshine chart
Average daily sunshine Charlestown
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 7.8 7.4 7.3 7.3 6.6 6.3 7.3 7.9 7.9 7.8 8.3 8.2

Day / night temperatures

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

Charlestown average minimum / maximum temperatures (Celsius) Charlestown average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Charlestown (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 18.7 18.8 17.1 14.3 11.1 8.6 6.9 7.6 9.8 12.8 14.9 17.4
Max °C 28.2 28 26.7 24.6 21.4 18.3 18 19.4 21.8 24.1 25.6 28
Min °F 65.6 65.8 62.8 57.7 51.9 47.4 44.3 45.7 49.6 55 58.7 63.3
Max °F 74.1 74.1 71.4 66.9 61.2 56.1 54.3 56.3 60.4 65.1 68.4 72.9

Sea temperature

The graph below shows the average sea temperature.

Charlestown average sea temperature chart (Celsius) Charlestown average sea temperature chart (Fahrenheit)
Average sea temperature around Charlestown in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 24 24.5 24.2 23.4 21.9 20.4 19.3 19.1 19.3 20.1 21.1 22.7
°F 75.3 76.1 75.6 74.1 71.4 68.7 66.8 66.3 66.8 68.1 70 72.9

Wind speed

The graph below shows the average wind speed.

Charlestown average winspeed by month (km/h) Charlestown average winspeed by month (mph)
Average wind speed in Charlestown (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 13 12 11 11 10 11 12 13 14 14 14 14
mph 8 7 7 7 7 7 7 8 9 9 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.

Charlestown relative humidity averages
Average relative humidity in Charlestown
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
65% 68% 67% 67% 70% 70% 64% 61% 57% 58% 60% 61%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Charlestown weather stats

Charlestown weather statistics
Hottest month: January 27.9°C 82.2°F
Driest month: September 55mm 2.2ins
Sunniest month: August 7.9hrs
Coldest month: July 17.7°C 63.9°F
Wettest month: June 129mm 5.1ins
Warmest sea: February 24.5°C 76.1°F
Map showing location of Charlestown (-32.95, 151.66667) Charlestown map pin © Google

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