Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
Merritt Island experiences an average high-temperature of an agreeable 71.6°F (22°C) with the onset of December, subtly varied from November's 75°F (23.9°C). Merritt Island experiences an average low-temperature reading of 62.2°F (16.8°C) throughout December.Humidity
In December, the average relative humidity is 76%.Rainfall
In Merritt Island, during December, the rain falls for 12.7 days and regularly aggregates up to 1.18" (30mm) of precipitation. Throughout the year, there are 190.9 rainfall days, and 29.37" (746mm) of precipitation is accumulated.Daylight
With an average of 10h and 24min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:57 am and sunset at 5:26 pm. On the last day of December, sunrise is at 7:14 am and sunset at 5:37 pm EST.
Sunshine
In Merritt Island, the average sunshine in December is 6.2h.UV index
The average daily maximum UV index in December is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: A daily maximum UV index of 5 in December translates into the following instructions:
Guard yourself - Precautionary measures against sun damage are advocated. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature?
What is the average humidity in December?
How many days does it rain in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
How high is the UV index in December?
Average temperature in December
Merritt Island, FL
- Average high temperature in December: 71.6°F
The warmest month (with the highest average high temperature) is August (87.3°F).
The month with the lowest average high temperature is January (68.4°F).
- Average low temperature in December: 62.2°F
The month with the highest average low temperature is August (78.6°F).
The coldest month (with the lowest average low temperature) is January (57.7°F).
Average pressure in December
Merritt Island, FL
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.97"Hg).
Average wind speed in December
Merritt Island, FL
- Average wind speed in December: 9.4mph
The windiest months (with the highest average wind speed) are January and November (10mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).
Average humidity in December
Merritt Island, FL
- Average humidity in December: 76%
The month with the highest relative humidity is August (79%).
The month with the lowest relative humidity is March (72%).
Average rainfall in December
Merritt Island, FL
- Average rainfall in December: 1.18"
The wettest month (with the highest rainfall) is August (5.12").
The driest month (with the least rainfall) is March (1.14").
Average rainfall days in December
Merritt Island, FL
- Average rainfall days in December: 12.7 days
The month with the highest number of rainy days is August (24.7 days).
The month with the least rainy days is February (9.6 days).
Average daylight in December /
Average sunshine in December
Merritt Island, FL
- Average daylight in December: 10h and 2min
The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).
- Average sunshine in December: 6h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 6min).
Average sunshine days in December
Merritt Island, FL
- Average sunshine days in December: 14.3 days
The month with the most sunshine days is January (17.2 days).
The month with the least sunshine days is August (3.1 days).
Average UV index in December
Merritt Island, FL
- Average UV index in December: 5
The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 4).
Average cloud cover in December
Merritt Island, FL
- Average cloud cover in December: 34
The months with the most cloud cover are January, November and December (Cloud cover 34).
The months with the least cloud cover are April, May and July (Cloud cover 26).
Average visibility in December
Merritt Island, FL
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Merritt Island, Florida, USA
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