Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average sea temperature in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
The onset of May in Key West notes an average high-temperature of a still warm 80.2°F, subtly shifted from April's 77.4°F. Key West reports an average low temperature of 77.9°F in May, a minor decrease from the day's highs.Humidity
The average relative humidity in May is 77%.Rainfall
In Key West, during May, the rain falls for 16.5 days and regularly aggregates up to 3.5" of precipitation. Throughout the year, in Key West, there are 199.2 rainfall days, and 31.61" of precipitation is accumulated.Ocean temperature
In May, the average ocean temperature in Key West is 80.8°F.Note: Water temperatures between 77°F and 84.2°F are regarded as highly pleasant, making all water activities enjoyable without any discomfort over long durations.
Daylight
In May, the average length of the day in Key West is 13h and 20min.On the first day of May, sunrise is at 6:51 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 8:11 pm EDT.
Sunshine
In May, the average sunshine in Key West is 10.9h.UV index
The months with the highest UV index in Key West are April through October, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 7 in May converts into the following recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Enhance your sun protection with tightly woven, yet airy clothing. Take note! The UV strength of the Sun elevates when reflected off water and sand.
FAQ
What are May temperatures in Key West?
What is the average humidity in May in Key West?
How much does it rain in Key West in May?
What is the water temperature in May in Key West?
What is the average length of the day in May in Key West?
When are sunrise and sunset in May in Key West?
How long on average sun shines in May in Key West?
What are the months with the highest UV index in Key West?
What is the UV index intensity in May in Key West?
Average temperature in May
Key West, FL
- Average high temperature in May: 80.2°F
The warmest month (with the highest average high temperature) is August (85.3°F).
The month with the lowest average high temperature is January (72.7°F).
- Average low temperature in May: 77.9°F
The month with the highest average low temperature is August (82.9°F).
The coldest month (with the lowest average low temperature) is January (68.5°F).
Average pressure in May
Key West, FL
- Average pressure in May: 29.99"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are September and October (29.93"Hg).
Average wind speed in May
Key West, FL
- Average wind speed in May: 12.2mph
The windiest months (with the highest average wind speed) are January and November (14.4mph).
The calmest month (with the lowest average wind speed) is July (9.5mph).
Average humidity in May
Key West, FL
- Average humidity in May: 77%
The month with the highest relative humidity is February (78%).
The months with the lowest relative humidity are July, August and September (74%).
Average rainfall in May
Key West, FL
- Average rainfall in May: 3.5"
The wettest month (with the highest rainfall) is September (5.12").
The driest month (with the least rainfall) is March (0.67").
Average rainfall days in May
Key West, FL
- Average rainfall days in May: 16.5 days
The months with the highest number of rainy days are August and September (23.1 days).
The month with the least rainy days is February (11 days).
Average sea temperature in May
Key West, FL
- Average sea temperature in May: 80.7°F
The best month for swimming (with the highest average sea temperature) is August (86.9°F).
The coldest months (with the lowest average sea temperature) are January and February (71.2°F).
Average daylight in May /
Average sunshine in May
Key West, FL
- Average daylight in May: 13h and 2min
The month with the longest days is June (Average daylight: 13h and 36min).
The month with the shortest days is December (Average daylight: 10h and 36min).
- Average sunshine in May: 10h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).
Average sunshine days in May
Key West, FL
- Average sunshine days in May: 10.8 days
The month with the most sunshine days is March (17 days).
The month with the least sunshine days is September (4.5 days).
Average UV index in May
Key West, FL
- Average UV index in May: 7
The months with the highest UV index are April, May, June, July, August, September and October (UV index 7).
The month with the lowest UV index is January (UV index 5).
Average cloud cover in May
Key West, FL
- Average cloud cover in May: 26
The month with the most cloud cover is January (Cloud cover 34).
The month with the least cloud cover is April (Cloud cover 23).
Average visibility in May
Key West, FL
- Average visibility in May: 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).
Key West, Florida, USA
Weather forecast for your location
2. Allow the app to use your location
