Grand Haven (MI) monthly weather averages

Average daytime temperature

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

Grand Haven average temperature chart (Celsius) Grand Haven average temperature chart (Fahrenheit)
Average monthly temperatures in Grand Haven (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -1.3 -0.1 5.9 13.1 19.6 24.5 27 26 22.4 15.9 8.5 1.5
°F 29.7 31.9 42.7 55.6 67.3 76 80.7 78.9 72.3 60.6 47.2 34.6

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.

Grand Haven monthly rainfall chart (mm) Grand Haven monthly rainfall chart (inches)
Average monthly rainfall in Grand Haven (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 54 34 58 73 68 66 60 84 97 70 77 71
inches 2.1 1.3 2.3 2.9 2.7 2.6 2.4 3.3 3.8 2.8 3 2.8
Rainy days 18 13 13 12 10 10 9 9 10 11 14 17

Average annual rainfall in Grand Haven: 768.733mm (302.7 inches)

Average daily sunshine

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

Grand Haven average daily sunshine chart
Average daily sunshine Grand Haven
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 3.9 5 6.2 7.7 9.3 10.6 10.7 9.5 7.6 5.7 3.4 2.9

Day / night temperatures

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

Grand Haven average minimum / maximum temperatures (Celsius) Grand Haven average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Grand Haven (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -7.7 -7.5 -3 2.5 7.7 12.7 15.9 15.3 11.6 6.1 1 -4.6
Max °C -1.1 0.1 6.2 13.4 19.9 24.8 27.3 26.3 22.7 16.1 8.7 1.6
Min °F 18.1 18.5 26.7 36.4 45.9 54.8 60.6 59.5 52.8 43 33.7 23.7
Max °F 24.1 25.3 34.9 46.2 56.8 65.7 70.9 69.4 62.8 52 40.6 29.3

Sea temperature

The graph below shows the average sea temperature.

Grand Haven average sea temperature chart (Celsius) Grand Haven average sea temperature chart (Fahrenheit)
Average sea temperature around Grand Haven in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 3.7 2.9 2.7 3.4 5.5 11.2 18.5 21.4 19.2 13.6 8.5 5.2
°F 38.6 37.3 36.9 38.1 41.9 52.1 65.3 70.5 66.6 56.4 47.4 41.3

Wind speed

The graph below shows the average wind speed.

Grand Haven average winspeed by month (km/h) Grand Haven average winspeed by month (mph)
Average wind speed in Grand Haven (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 21 19 20 20 17 16 15 14 16 18 20 20
mph 13 12 13 13 11 10 9 9 10 11 12 13

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.

Grand Haven relative humidity averages
Average relative humidity in Grand Haven
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
78% 75% 71% 66% 65% 68% 71% 75% 76% 74% 75% 79%