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
In December, the average high-temperature registers at an agreeable 72.5°F (22.5°C), nearly identical to November's 76.6°F (24.8°C). Sydney experiences a nighttime temperature average of 56.8°F (13.8°C) during December.Humidity
The average relative humidity in December is 76%.Rainfall
In Sydney, in December, during 9.5 rainfall days, 1.73" (44mm) of precipitation is typically accumulated. Throughout the year, there are 192.2 rainfall days, and 37.91" (963mm) of precipitation is accumulated.Daylight
December has the shortest days of the year, with an average of 10h and 24min of daylight.On the first day of the month, sunrise is at 7:03 am and sunset at 5:32 pm. On the last day of December, sunrise is at 7:19 am and sunset at 5:44 pm EST.
Sunshine
With an average of 6.2h of sunshine, December has the least sunshine of the year.UV index
In Sydney, the average daily maximum UV index in December 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: The average daily UV index of 5 in December transforms into the following instructions:
Make use of precautions - It is urged to ward off sun damage. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures?
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?
What is the month with the least sunshine in Sydney?
How long on average sun shines in December?
What is the UV index reading in December?
Average temperature in December
Sydney, FL
- Average high temperature in December: 72.5°F
The warmest month (with the highest average high temperature) is August (90.1°F).
The month with the lowest average high temperature is January (68.9°F).
- Average low temperature in December: 56.8°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 (51.8°F).
Average pressure in December
Sydney, 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 (29.96"Hg).
Average wind speed in December
Sydney, FL
- Average wind speed in December: 6.3mph
The windiest month (with the highest average wind speed) is March (6.9mph).
The calmest month (with the lowest average wind speed) is July (4.8mph).
Average humidity in December
Sydney, FL
- Average humidity in December: 76%
The month with the highest relative humidity is September (78%).
The months with the lowest relative humidity are March and May (71%).
Average rainfall in December
Sydney, FL
- Average rainfall in December: 1.73"
The wettest month (with the highest rainfall) is August (6.93").
The driest month (with the least rainfall) is February (1.22").
Average rainfall days in December
Sydney, FL
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is August (27.3 days).
The month with the least rainy days is February (8.8 days).
Average daylight in December /
Average sunshine in December
Sydney, 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 May (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).
Average sunshine days in December
Sydney, FL
- Average sunshine days in December: 18.7 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is August (2.7 days).
Average UV index in December
Sydney, 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
Sydney, FL
- Average cloud cover in December: 34
The month with the most cloud cover is February (Cloud cover 35).
The month with the least cloud cover is May (Cloud cover 26).
Average visibility in December
Sydney, 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).
Sydney, Florida, USA
Weather forecast for your location
2. Allow the app to use your location