United StatesThe weather in December in Key West
It's warm in December in Key West with an average temperature of 26°C. Temperatures this month range from a low of 25°C to a high of 27°C. At night, you can expect temperatures between 20°C and 23°C.
Looking for great weather? December is a good time to be in Key West. The temperatures are nice, and there’s not too much rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in December for Key West, Florida. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 30°C in 2018, Key West reached the highest temperature in December over the past 10 years. The lowest daytime temperature in this month was 15°C in 2022. The extreme nighttime temperatures ranged from a lowest recorded value of 11°C to a highest value of 28°C.
Water temperature
The water temperature at Key West is 25°C this month. Lovely temperature for a swim.
Rainfall amount
In December, there is an average of 77 mm of precipitation, spread over 10 days. The wind speed is around 4 Bft, mostly coming from the East.
Daily weather in December for Key West
Click on any day in December to get detailed info about the usual weather on that day in Key West. Check out the historical temperatures and precipitation over the past 10 years on this day.
December weather comparison
| Key West | New York | |
|---|---|---|
| Average temperature | 26°C | 9°C |
| Max. temperature | 27°C | 12°C |
| Min. temperature | 20°C | -5°C |
| Total precipitation | 77 mm | 133 mm |
| Rainy days | 10 days | 17 days |
Start of December
The month of December starts in Key West with hot temps, averaging around 27°C during the day and nights around 23°C.
Mid December
By mid-December, daytime temps stay steady at around 27°C, with nights around 22°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of December
By the end of December, the average daytime temperature in Key West is around 26°C, while nighttime temps are about 22°C. A shower might pop up, but overall, the weather will be dry and sunny.
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UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
The hurricane season in Key West runs from June to November.
Check out the climate of Key West for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in December in Key West, Florida. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in December in Key West
Temperature in December in Key West over the years
Precipitation charts
These charts show the average amount of precipitation in December in Key West, Florida. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in December in Key West
Total precipitation in December in Key West over the years
Daily UV index in December in Key West
This chart shows the average daily UV index in December in Key West, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in December in Key West
Have you been to Key West in December?
Share your weather experience in December in Key West.
Average weather in Key West by month
Click on a month below to see detailed weather info for Key West. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.