May weather forecastKey Largo, FL
May
Weather in May
Key Largo ushers in the onset of summer in May, with a conspicuous heat influence compared to April. The sunshine hours plateau, giving way to longer daylight hours, resulting in predominantly sunny days. In consonance with the season, the sea temperature rises, further promoting water-based activities. Despite the high heat, May witnesses the start of the rainy season, with occasional showers predicted. This month's temperature soars to a high of 80.6°F (27°C) and rainfall amounts to 2.64" (67mm).Temperature
May experiences an average high-temperature of a still moderately hot 80.6°F (27°C), barely different from April's 77.5°F (25.3°C). Key Largo's evenings during May maintain an average temperature of 78.1°F (25.6°C), aligning closely with the daytime temperatures.Heat index
The heat index value for May is estimated at 84.2°F (29°C). If exposure and activity persist, fatigue could ensue, possibly leading to heat cramps.One should be cognizant that the heat index values are tailored for shaded spots and mild winds. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', shows a temperature sensation when both heat and moisture conditions are combined. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
Humidity
The average relative humidity in May is 75%.Rainfall
In Key Largo, in May, during 15.3 rainfall days, 2.64" (67mm) of precipitation is typically accumulated. In Key Largo, during the entire year, the rain falls for 190.1 days and collects up to 27.05" (687mm) of precipitation.Ocean temperature
In Key Largo, Florida, in May, the average water temperature is 81.1°F (27.3°C).Note: Water temperatures in the range of 77°F (25°C) to 84.2°F (29°C) are warm and delightful, ensuring comfort during water activities over extended periods.
Daylight
In May, the average length of the day is 13h and 22min.On the first day of the month, sunrise is at 6:45 am and sunset at 7:52 pm. On the last day of May, sunrise is at 6:31 am and sunset at 8:07 pm EDT.
Sunshine
The average sunshine in May is 10.6h.UV index
April through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index, 7 in May, converts into the following recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Take warning! Reflective sand and water surfaces intensify the Sun's UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Key Largo, FL
- Average high temperature in May: 80.6°F
The warmest month (with the highest average high temperature) is August (85.5°F).
The month with the lowest average high temperature is January (72.7°F).
- Average low temperature in May: 78.1°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 (66.9°F).
Average pressure in May
Key Largo, FL
- Average pressure in May: 30"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are September and October (29.94"Hg).
Average wind speed in May
Key Largo, FL
- Average wind speed in May: 11.6mph
The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest month (with the lowest average wind speed) is July (8.9mph).
Average humidity in May
Key Largo, FL
- Average humidity in May: 75%
The months with the highest relative humidity are February, June and December (76%).
The month with the lowest relative humidity is March (73%).
Average rainfall in May
Key Largo, FL
- Average rainfall in May: 2.64"
The wettest month (with the highest rainfall) is August (4.33").
The driest month (with the least rainfall) is March (0.59").
Average rainfall days in May
Key Largo, FL
- Average rainfall days in May: 15.3 days
The month with the highest number of rainy days is September (22.9 days).
The month with the least rainy days is February (9.7 days).
Average sea temperature in May
Key Largo, FL
- Average sea temperature in May: 81.1°F
The best month for swimming (with the highest average sea temperature) is August (86.5°F).
The coldest month (with the lowest average sea temperature) is February (74°F).
Average daylight in May /
Average sunshine in May
Key Largo, FL
- Average daylight in May: 13h and 24min
The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 36min).
- Average sunshine in May: 10h and 36min
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 24min).
Average sunshine days in May
Key Largo, FL
- Average sunshine days in May: 13 days
The month with the most sunshine days is January (17.3 days).
The month with the least sunshine days is September (5.2 days).
Average UV index in May
Key Largo, 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 Largo, FL
- Average cloud cover in May: 29
The month with the most cloud cover is October (Cloud cover 35).
The month with the least cloud cover is April (Cloud cover 26).
Average visibility in May
Key Largo, 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).
