West Haven (CT) monthly weather averages

Average daytime temperature

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

West Haven average temperature chart (Celsius) West Haven average temperature chart (Fahrenheit)
Average monthly temperatures in West Haven (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 1.8 2.6 7.6 13.5 19.2 24.4 27.2 26.6 23.1 17.5 11.2 4.2
°F 35.3 36.8 45.7 56.3 66.6 76 81 79.9 73.5 63.6 52.2 39.6

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.

West Haven monthly rainfall chart (mm) West Haven monthly rainfall chart (inches)
Average monthly rainfall in West Haven (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 82 81 101 102 89 76 84 93 85 87 103 99
inches 3.2 3.2 4 4 3.5 3 3.3 3.7 3.3 3.4 4 3.9
Rainy days 10 10 11 10 11 11 9 9 8 7 11 12

Average annual rainfall in West Haven: 1049.933mm (413.4 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in West Haven

West Haven average daily sunshine chart
Average daily sunshine West Haven
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 6.1 6.9 7.8 8.5 9.1 9.6 9.6 9.1 8 7.3 5.4 5.1

Day / night temperatures

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

West Haven average minimum / maximum temperatures (Celsius) West Haven average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in West Haven (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -6.5 -5.9 -1.5 3.3 8.8 14.1 17.4 17 12.9 7.2 2.2 -3.8
Max °C 2.1 2.9 7.9 13.8 19.5 24.7 27.5 26.9 23.3 17.8 11.5 4.4
Min °F 20.4 21.5 29.4 37.9 47.8 57.4 63.2 62.5 55.2 45 35.9 25.2
Max °F 28 29.3 37.8 47.3 57.4 66.9 72.3 71.4 64.6 54.5 44.2 32.5

Sea temperature

The graph below shows the average sea temperature.

West Haven average sea temperature chart (Celsius) West Haven average sea temperature chart (Fahrenheit)
Average sea temperature around West Haven 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.

West Haven average winspeed by month (km/h) West Haven average winspeed by month (mph)
Average wind speed in West Haven (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 19 19 20 19 17 16 15 15 16 17 18 18
mph 12 12 12 12 11 10 9 9 10 10 11 11

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.

West Haven relative humidity averages
Average relative humidity in West Haven
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
66% 66% 64% 63% 69% 72% 72% 74% 74% 70% 70% 69%