Key West, Florida 

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Climate in Key West, Florida

Key West, Florida gets 44 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Key West averages 0 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 260 sunny days per year in Key West. The US average is 205 sunny days.

Key West gets some kind of precipitation, on average, 102 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 89 degrees
Winter Low: the January low is 64
Rain: averages 44 inches of rain a year
Snow: averages 0 inches of snow a year


The annual BestPlaces Comfort Index for Key West is 6.1 (10=best), which means it is one of the least comfortable places in Florida.

2.7 / 8.7

Summer   /   Winter
January, February and December are the most pleasant months in Key West, while August and September are the least comfortable months.

Climate Averages
  Key West, FloridaUnited States
  43.8 in.38.1 in.
  0.0 in.27.8 in.
  102.0 days106.2 days
  260 days205 days
  3 ft.2443 ft.


Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

August is the hottest month for Key West with an average high temperature of 89.6°, which ranks it as one of the coolest places in Florida. In Key West, there are 7 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Key West are March, February and December.

In Key West, there are 37.7 days annually when the high temperature is over 90°, which is one of the coolest places in Florida.

January has the coldest nighttime temperatures for Key West with an average of 63.6°. This is one of the warmest places in Florida.

In Key West, there are 0.0 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Florida.

In Key West, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Florida.

Humidity in Key West is significant through much of the year, and miserable in the summer. The humidity here has been described as oppressive or miserable in the summer. It's uncomfortable for most of the year, but the most pleasant month is January.

September is the wettest month in Key West with 7.5 inches of rain, and the driest month is February with 1.8 inches. The wettest season is Autumn with 35% of yearly precipitation and 14% occurs in Spring, which is the driest season. The annual rainfall of 43.8 inches in Key West means that it is one of the driest places in Florida.

September is the rainiest month in Key West with 15.3 days of rain, and April is the driest month with only 4.4 rainy days. There are 102.0 rainy days annually in Key West, which is one of the least rainy places in Florida. The rainiest season is Autumn when it rains 35% of the time and the driest is Summer with only a 16% chance of a rainy day.

There is rarely any recorded snowfall in Key West, ranking it as one of the least snowy places in Florida. Any measurable snowfall is a rare occurance in Key West.

  • Annual Rainfall (US Avg: 36.5")
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    Reviews for Key West    7 Reviews
    Real cost of living averages for Key West, FL. - 3/29/2021
    I was raised in Key West since 1980, these average cost prices for rent that you are seeing were not even accurate then, let alone now in 2021. The average cost of... Read More

    Start Your Review of Key West

    Key West - 3/9/2016
    Like the... Read More

    Cost of Living Inconsistency. - 1/19/2014
    I have lived in Key West for the last seven years. During that time, I have observed very little change in the cost of living. I work for a national company that pays... Read More

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