United StatesAverage weather for Key West in March
It's warm in March in Key West with an average temperature of 27°C. Temperatures this month range from a low of 26°C to a high of 28°C. At night, you can expect temperatures between 21°C and 24°C.
Start of March
The month of March starts in Key West with hot temps, averaging around 27°C during the day and nights around 23°C. There’s little chance of precipitation. The weather’s mostly sunny and dry.
Mid March
By mid-March, daytime temps stay steady at around 27°C, with nights around 23°C. Not much precipitation expected during this period. It’s mostly dry and sunny.
End of March
By the end of March, the average daytime temperature in Key West is around 28°C, while nighttime temps are about 23°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
Water temperature
The water temperature at Key West is 26°C this month. Lovely temperature for a swim.
In March, there is an average of 24 mm of precipitation, spread over 3 days. The wind speed is around 4 Bft, mostly coming from the Southeast.
Key West in March |
New York | ||
|---|---|---|---|
 Average temperature |
27°C | 11°C | |
 Max. temperature |
28°C | 14°C | |
| Min. temperature |
26°C | -5°C | |
 Total precipitation |
24 mm | 63 mm | |
| Rainy days |
3 days | 10 days | |
February
UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is March a good time to visit Key West?
Looking for great weather? March is a good time to be in Key West. The temperatures are nice, and there’s not too much rain.
Temperature records
With 30°C in 2023, Key West reached the highest temperature in March over the past 10 years. The lowest daytime temperature in this month was 19°C in 2018. The extreme nighttime temperatures ranged from a lowest recorded value of 15°C to a highest value of 27°C.
Check out the climate of Key West for all months and discover the best travel time
Daily Temperature in March in Key West
This chart shows the average daily high and low temperatures in March for Key West, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in March in Key West
The chart below shows the average daily precipitation in March for Key West, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for March, you can expect about 3 days of precipitation in Key West.
Daily UV index in March in Key West
This chart shows the average daily UV index in March 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.
Temperature in March in Key West over the years
This chart shows the average temperature in March in Key West, measured in degrees Celsius, over the past few years.
Total precipitation in March in Key West over the years
This chart shows the average precipitation in March in Key West, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in March for Key West
Click on any day in March 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.
Weather experiences in March in Key West
Have you been to Key West in March?
Share your weather experience in March 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.
