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
May's weather in Key West records an average high-temperature of a still moderately hot 80.2°F (26.8°C), showing little deviation from April. Key West, during the nights of May, averages a temperature close to its daytime high, at a still warm 77.9°F (25.5°C).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" (89mm) of precipitation. In Key West, during the entire year, the rain falls for 199.2 days and collects up to 31.61" (803mm) of precipitation.Ocean temperature
In Key West, Florida, the average seawater temperature in May is 80.8°F (27.1°C).Note: For swimming, diving, or other water activities, the temperature range of 77°F (25°C) to 84.2°F (29°C) is perceived as exceptionally enjoyable and comfortable even for prolonged periods.
Daylight
The average length of the day in May is 13h and 20min.On the first day of the month, sunrise is at 6:51 am and sunset at 7:56 pm. On the last day of May, sunrise is at 6:38 am and sunset at 8:11 pm EDT.
Sunshine
In May, the average sunshine is 10.9h.UV index
April through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A daily high UV index of 7 in May leads to these guidelines:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Alert! UV radiation becomes sharper due to reflections from sand and water.
Frequently asked questions
What is the temperature in May in Key West?
What is the average humidity in May in Key West?
How many days does it rain in May in Key West?
How warm is the water in May in Key West?
What is the average length of the day in May in Key West?
What time are sunrise and sunset in May in Key West?
How long on average sun shines in May in Key West?
When is the highest UV index in Key West?
What is the UV index reading 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
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