December weather forecastMelbourne, FL
December
Weather in December
The first month of the winter, December, is also an agreeable month in Melbourne, Florida, with temperature in the range of an average high of 72.5°F (22.5°C) and an average low of 63°F (17.2°C).Temperature
The advent of December sees the average high-temperature at an agreeable 72.5°F (22.5°C), subtly shifted from November's 75.9°F (24.4°C). Melbourne's temperature tends to fall to an average low of 63°F (17.2°C) during the nights of December.Humidity
The average relative humidity in December is 77%.Rainfall
In December, the rain falls for 10.6 days. Throughout December, 0.94" (24mm) of precipitation is accumulated. In Melbourne, Florida, during the entire year, the rain falls for 176.1 days and collects up to 22.28" (566mm) of precipitation.Ocean temperature
In Melbourne, the average seawater temperature in December is 74.1°F (23.4°C).Note: Given an individual's cold sensitivity, considering factors like sunshine, wind, and air temperature, a brief swim in 74.1°F (23.4°C) water might be pleasurable. (FYI: The standard water temperature for Olympic swimming contests is 77°F (25°C) to 82.4°F (28°C).)
Daylight
The month with the shortest days is December, with an average of 10h and 24min of daylight.On the first day of December, sunrise is at 6:57 am and sunset at 5:26 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 5:37 pm EST.
Sunshine
In December, the average sunshine is 6.2h.UV index
January, February and December, with an average maximum UV index of 5, are months with the lowest UV index in Melbourne. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 5 during December translates into the following guidance:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Stay aware! UV radiation is magnified when reflecting off sand and water.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Melbourne, FL
- Average high temperature in December: 72.5°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 (69.3°F).
- Average low temperature in December: 63°F
The month with the highest average low temperature is August (78.8°F).
The coldest month (with the lowest average low temperature) is January (58.6°F).
Average pressure in December
Melbourne, FL
- Average pressure in December: 30.1"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
Melbourne, FL
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is November (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).
Average humidity in December
Melbourne, FL
- Average humidity in December: 77%
The month with the highest relative humidity is August (80%).
The month with the lowest relative humidity is March (72%).
Average rainfall in December
Melbourne, FL
- Average rainfall in December: 0.94"
The wettest month (with the highest rainfall) is August (4.29").
The driest month (with the least rainfall) is February (0.59").
Average rainfall days in December
Melbourne, FL
- Average rainfall days in December: 10.6 days
The month with the highest number of rainy days is August (23.3 days).
The month with the least rainy days is February (8.2 days).
Average sea temperature in December
Melbourne, FL
- Average sea temperature in December: 74.2°F
The best month for swimming (with the highest average sea temperature) is August (84.7°F).
The coldest month (with the lowest average sea temperature) is January (71.4°F).
Average daylight in December /
Average sunshine in December
Melbourne, FL
- Average daylight in December: 10h and 24min
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 12min
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
Melbourne, FL
- Average sunshine days in December: 17.1 days
The month with the most sunshine days is January (19.6 days).
The month with the least sunshine days is August (4.7 days).
Average UV index in December
Melbourne, 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 months with the lowest UV index are January, February and December (UV index 5).
Average cloud cover in December
Melbourne, FL
- Average cloud cover in December: 34
The months with the most cloud cover are November and December (Cloud cover 34).
The months with the least cloud cover are April and May (Cloud cover 26).
Average visibility in December
Melbourne, 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).
