May weather forecastBig Coppitt Key, FL
May
Weather in May
May, the last month of the spring in Big Coppitt Key, is also a moderately hot month, with an average temperature fluctuating between 80.2°F (26.8°C) and 78.3°F (25.7°C).Temperature
Big Coppitt Key, Florida, marks the start of May with an average high-temperature of a still warm 80.2°F (26.8°C), hinting at a slight fluctuation from April's 77.4°F (25.2°C). Big Coppitt Key's nighttime temperatures in May see a subtle dip to an average of 78.3°F (25.7°C).Humidity
In Big Coppitt Key, Florida, the average relative humidity in May is 77%.Rainfall
In Big Coppitt Key, during May, the rain falls for 13.5 days and regularly aggregates up to 2.28" (58mm) of precipitation. In Big Coppitt Key, during the entire year, the rain falls for 171.1 days and collects up to 21.54" (547mm) of precipitation.Ocean temperature
In Big Coppitt Key, the average seawater temperature in May is 80.8°F (27.1°C).Note: For swimming, diving, and various water activities, the temperatures ranging from 77°F (25°C) to 84.2°F (29°C) are seen as highly enjoyable and comfortable for extended durations without any discomfort.
Daylight
In May, the average length of the day is 13h and 20min.On the first day of the month, sunrise is at 6:50 am and sunset at 7:56 pm. On the last day of May, sunrise is at 6:37 am and sunset at 8:11 pm EDT.
Sunshine
In Big Coppitt Key, the average sunshine in May is 11h.UV index
April through October, with an average maximum UV index of 7, are months with the highest UV index in Big Coppitt Key. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high daily UV index of 7 during May translates into the following directions:
Take precautions against overexposure. Protection against sun damage is needed. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Heads up! Sand and water reflection magnifies the UV exposure from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Big Coppitt Key, 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: 78.3°F
The month with the highest average low temperature is August (83.1°F).
The coldest month (with the lowest average low temperature) is January (68.5°F).
Average pressure in May
Big Coppitt Key, 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
Big Coppitt Key, FL
- Average wind speed in May: 12.2mph
The windiest month (with the highest average wind speed) is November (14.4mph).
The calmest month (with the lowest average wind speed) is July (9.4mph).
Average humidity in May
Big Coppitt Key, 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
Big Coppitt Key, FL
- Average rainfall in May: 2.28"
The wettest month (with the highest rainfall) is September (3.54").
The driest month (with the least rainfall) is March (0.43").
Average rainfall days in May
Big Coppitt Key, FL
- Average rainfall days in May: 13.5 days
The month with the highest number of rainy days is September (20.8 days).
The month with the least rainy days is March (9.4 days).
Average sea temperature in May
Big Coppitt Key, 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
Big Coppitt Key, FL
- Average daylight in May: 13h and 18min
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: 11h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in May
Big Coppitt Key, FL
- Average sunshine days in May: 13.8 days
The month with the most sunshine days is March (19.6 days).
The month with the least sunshine days is September (6.2 days).
Average UV index in May
Big Coppitt Key, 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
Big Coppitt Key, FL
- Average cloud cover in May: 25
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
Big Coppitt Key, 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).





