Merritt Island (FL) monthly weather averages

Average daytime temperature

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

Merritt Island average temperature chart (Celsius) Merritt Island average temperature chart (Fahrenheit)
Average monthly temperatures in Merritt Island (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 20.4 21 23.7 26.6 29 30.8 31.8 31.6 30.6 27.7 24.3 21.6
°F 68.7 69.9 74.6 79.9 84.1 87.5 89.2 88.9 87.1 81.9 75.7 70.9

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.

Merritt Island monthly rainfall chart (mm) Merritt Island monthly rainfall chart (inches)
Average monthly rainfall in Merritt Island (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 63 78 90 68 85 160 172 180 192 139 75 52
inches 2.5 3.1 3.5 2.7 3.3 6.3 6.8 7.1 7.5 5.5 2.9 2.1
Rainy days 8 8 8 5 9 14 16 16 14 9 8 7

Average annual rainfall in Merritt Island: 1300.433mm (512 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Merritt Island

Merritt Island average daily sunshine chart
Average daily sunshine Merritt Island
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 7.9 8.5 9.5 9.7 9.1 9.3 9.7 9.2 8.3 7.9 7.3 7.4

Day / night temperatures

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

Merritt Island average minimum / maximum temperatures (Celsius) Merritt Island average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Merritt Island (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 9.8 10.3 13.5 16 19 21.6 22.4 22.8 22.4 19.1 14.5 11
Max °C 20.7 21.3 23.9 26.9 29.2 31.1 32 31.9 30.8 28 24.5 21.9
Min °F 49.6 50.5 56.3 60.7 66.2 70.8 72.3 73 72.3 66.3 58.1 51.7
Max °F 59.4 60.4 65.7 70.5 75.4 79.3 81 81.1 79.9 74.3 67.1 61.5

Sea temperature

The graph below shows the average sea temperature.

Merritt Island average sea temperature chart (Celsius) Merritt Island average sea temperature chart (Fahrenheit)
Average sea temperature around Merritt Island in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 23.2 22.8 23.3 24.6 26.4 28.1 28.9 29.2 28.7 27.4 25.5 24.2
°F 73.7 73 73.9 76.3 79.6 82.6 84.1 84.5 83.6 81.3 77.9 75.6

Wind speed

The graph below shows the average wind speed.

Merritt Island average winspeed by month (km/h) Merritt Island average winspeed by month (mph)
Average wind speed in Merritt Island (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 14 16 16 15 14 13 12 11 12 14 14 14
mph 9 10 10 9 9 8 7 7 7 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.

Merritt Island relative humidity averages
Average relative humidity in Merritt Island
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
74% 72% 71% 68% 72% 77% 78% 79% 79% 75% 75% 75%