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 snowfall days in December
- Average sea temperature 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
December
Weather in December
Temperature
December's weather displays an average high-temperature of a comfortable 67.5°F (19.7°C), slightly varied from November's 72°F (22.2°C). Jacksonville sees an average low-temperature of 52.7°F (11.5°C) during December.Humidity
The most humid month is December, with an average relative humidity of 76%.Rainfall
In Jacksonville, during December, the rain falls for 11.6 days and regularly aggregates up to 1.89" (48mm) of precipitation. In Jacksonville, during the entire year, the rain falls for 172.6 days and collects up to 25.35" (644mm) of precipitation.Snowfall
December is the only month when snow falls. The month with the most snowfall days is December, when snow falls for 0.1 days.Ocean temperature
In Jacksonville, the average seawater temperature in December is 64.9°F (18.3°C).Note: In water of 64.9°F (18.3°C), the majority of people do not enjoy swimming. Breathing becomes increasingly hard to manage as the temperature drops from 69.8°F (21°C) to 59°F (15°C).
Daylight
With an average of 10h and 12min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:06 am and sunset at 5:25 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 5:36 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 5.9h of sunshine.UV index
In December, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum daily UV index of 5 during December morphs into the following directions:
Put precautions into practice - Protective measures against sun-induced damage are advised. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature?
What is the most humid month?
What is the average humidity in December?
How much does it rain in December?
When does it snow the most?
When does it start snowing?
What is the ocean temperature in December?
What is the month with the shortest days?
How many hours of daylight does Jacksonville have in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Jacksonville have in December?
What is the UV index reading in December?
Average temperature in December
Jacksonville, FL
- Average high temperature in December: 67.5°F
The warmest months (with the highest average high temperature) are July and August (91.4°F).
The month with the lowest average high temperature is January (63.1°F).
- Average low temperature in December: 52.7°F
The month with the highest average low temperature is August (76.6°F).
The coldest month (with the lowest average low temperature) is January (47.8°F).
Average pressure in December
Jacksonville, FL
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).
Average wind speed in December
Jacksonville, FL
- Average wind speed in December: 6.3mph
The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in December
Jacksonville, FL
- Average humidity in December: 76%
The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is March (69%).
Average rainfall in December
Jacksonville, FL
- Average rainfall in December: 1.89"
The wettest month (with the highest rainfall) is August (3.66").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in December
Jacksonville, FL
- Average rainfall days in December: 11.6 days
The month with the highest number of rainy days is August (23.3 days).
The month with the least rainy days is November (9 days).
Average snowfall days in December
Jacksonville, FL
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average sea temperature in December
Jacksonville, FL
- Average sea temperature in December: 64.9°F
The best month for swimming (with the highest average sea temperature) is August (83.5°F).
The coldest month (with the lowest average sea temperature) is February (60.4°F).
Average daylight in December /
Average sunshine in December
Jacksonville, FL
- Average daylight in December: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in December: 5h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in December
Jacksonville, FL
- Average sunshine days in December: 17.4 days
The month with the most sunshine days is January (18.8 days).
The month with the least sunshine days is August (6.3 days).
Average UV index in December
Jacksonville, FL
- Average UV index in December: 5
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 4).
Average cloud cover in December
Jacksonville, FL
- Average cloud cover in December: 39
The month with the most cloud cover is December (Cloud cover 39).
The month with the least cloud cover is May (Cloud cover 27).
Average visibility in December
Jacksonville, 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).