Bristol (CT) monthly weather averages

Average daytime temperature

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

Bristol average temperature chart (Celsius) Bristol average temperature chart (Fahrenheit)
Average monthly temperatures in Bristol (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 0.4 1.7 7.2 14 20.4 25.1 27.8 26.7 22.6 16.7 9.9 2.7
°F 32.7 35 45 57.2 68.7 77.3 82 80 72.7 62.1 49.8 36.9

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.

Bristol monthly rainfall chart (mm) Bristol monthly rainfall chart (inches)
Average monthly rainfall in Bristol (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 85 80 94 102 101 95 91 100 97 92 104 99
inches 3.3 3.2 3.7 4 4 3.8 3.6 3.9 3.8 3.6 4.1 3.9
Rainy days 11 10 12 11 12 11 9 10 9 8 11 12

Average annual rainfall in Bristol: 1107.533mm (436 inches)

Average daily sunshine

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

Bristol average daily sunshine chart
Average daily sunshine Bristol
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 6 6.8 7.5 8.2 8.9 9.6 9.8 9.1 7.9 7 5.1 5

Day / night temperatures

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

Bristol average minimum / maximum temperatures (Celsius) Bristol average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Bristol (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -9.5 -8.3 -3.1 1.9 7.7 12.8 15.8 14.9 10.5 4.4 -0.2 -6.4
Max °C 0.7 1.9 7.5 14.3 20.7 25.5 28.1 27 22.9 17 10.2 3
Min °F 15 17.1 26.4 35.4 45.9 55 60.4 58.7 50.9 39.9 31.7 20.6
Max °F 24.1 26.2 36 46.6 57.6 66.4 71.4 69.6 62.1 51.3 41 28.9

Sea temperature

The graph below shows the average sea temperature.

Bristol average sea temperature chart (Celsius) Bristol average sea temperature chart (Fahrenheit)
Average sea temperature around Bristol in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 6 4 3.7 5.8 10.3 15.9 20.6 21.7 19.6 15.8 12.1 8.9
°F 42.8 39.1 38.7 42.5 50.6 60.6 69.1 71 67.3 60.5 53.8 48

Wind speed

The graph below shows the average wind speed.

Bristol average winspeed by month (km/h) Bristol average winspeed by month (mph)
Average wind speed in Bristol (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 17 17 18 18 16 15 14 13 14 15 17 17
mph 11 11 11 11 10 9 9 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.

Bristol relative humidity averages
Average relative humidity in Bristol
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
65% 64% 62% 60% 65% 69% 70% 72% 74% 70% 69% 69%