May weather forecast and climate
North Key Largo, FL

Weather in May

May, the last month of the spring, in North Key Largo, is also a moderately hot month, with average temperature varying between 76.6°F (24.8°C) and 84.2°F (29°C).

Temperature

In North Key Largo, the average high-temperature is essentially the same as in April - a still warm 84.2°F (29°C). In North Key Largo, the average low-temperature is 76.6°F (24.8°C).

Heat index

The average heat index in May is estimated at a tropical 90.9°F (32.7°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'felt air temperature', or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (wind, clothing, differences in body mass, height, and shape). Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In May, the average relative humidity in North Key Largo is 70%.

Rainfall

In North Key Largo, it is raining for 19.7 days, with typically 4.61" (117mm) of accumulated precipitation. Throughout the year, in North Key Largo, there are 225.9 rainfall days, and 40.91" (1039mm) of precipitation is accumulated.

Ocean temperature

In May, the average ocean temperature is 81.1°F (27.3°C).
Note: For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

In May, the average length of the day in North Key Largo is 13.4h.

Sunshine

In May, the average sunshine is 10.5h.

UV index

Months with the highest UV index in North Key Largo are April through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 7 transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in May in North Key Largo?

In May, in North Key Largo, the average high-temperature is 84.2°F (29°C), and the average low-temperature is 76.6°F (24.8°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in May is estimated at 90.9°F (32.7°C).

What is the average humidity in May in North Key Largo?

In North Key Largo, the average relative humidity in May is 70%.

How much does it rain in North Key Largo in May?

In North Key Largo, Florida, in May, it is raining for 19.7 days, with typically 4.61" (117mm) of accumulated precipitation.

What is the ocean temperature in May in North Key Largo?

In May, the average ocean temperature in North Key Largo, Florida, is 81.1°F (27.3°C). Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does North Key Largo have in May?

In North Key Largo, the average length of the day in May is 13.4h.

How long on average sun shines in May in North Key Largo?

In North Key Largo, the average sunshine in May is 10.5h.

When is the highest UV index in North Key Largo?

Months with the highest UV index in North Key Largo are April through September, with an average maximum UV index of 7.

What is the UV index intensity in May in North Key Largo?

The average daily maximum UV index in May in North Key Largo, Florida, is 7. A UV Index reading of 6 to 7 represents a high health risk from the exposure to the Sun's UV rays.

Average temperature in May
North Key Largo, FL

Average temperature in May - North Key Largo, FL
  • Average high temperature in May: 84.2°F

The warmest month (with the highest average high temperature) is August (88.9°F).
The month with the lowest average high temperature is January (73.9°F).

  • Average low temperature in May: 76.6°F

The month with the highest average low temperature is August (81.7°F).
The coldest month (with the lowest average low temperature) is January (63.1°F).

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Average pressure in May
North Key Largo, FL

Average pressure in May - North Key Largo, FL
  • Average pressure in May: 30"

The month with the highest atmospheric pressure is January (30.1").
Months with the lowest atmospheric pressure are September and October (29.94").

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Average wind speed in May
North Key Largo, FL

Average wind speed in May - North Key Largo, FL
  • Average wind speed in May: 9.5mph

The windiest month (with the highest average wind speed) is March (10.2mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).

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Average humidity in May
North Key Largo, FL

Average humidity in May - North Key Largo, FL
  • Average humidity in May: 70%

The month with the highest relative humidity is December (75%).
The month with the lowest relative humidity is March (68%).

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Average rainfall in May
North Key Largo, FL

Average rainfall in May - North Key Largo, FL
  • Average rainfall in May: 4.61"

The wettest month (with the highest rainfall) is August (6.77").
The driest month (with the least rainfall) is February (1.14").

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Average rainfall days in May
North Key Largo, FL

Average rainfall days in May - North Key Largo, FL
  • Average rainfall days in May: 19.7 days

The month with the highest number of rainy days is August (26.8 days).
Months with the least rainy days are January and February (12.5 days).

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Average sea temperature in May
North Key Largo, FL

Average sea temperature in May - North 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).

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Average daylight in May /
Average sunshine in May
North Key Largo, FL

Average daylight in May / Average sunshine in May - North Key Largo, FL
  • Average daylight in May: 13.4h

The month with the longest days is June (Average daylight: 13.7h).
The month with the shortest days is December (Average daylight: 10.6h).

  • Average sunshine in May: 10.5h

The month with the most sunshine is July (Average sunshine: 11h).
The month with the least sunshine is December (Average sunshine: 6.3h).

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Average sunshine days in May
North Key Largo, FL

Average sunshine days in May - North Key Largo, FL
  • Average sunshine days in May: 8.6 days

The month with the most sunshine days is March (14.3 days).
The month with the least sunshine days is August (2.1 days).

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Average UV index in May
North Key Largo, FL

Average UV index in May - North Key Largo, FL
  • Average UV index in May: 7

Months with the highest UV index are April, May, June, July, August and September (UV index 7).
The month with the lowest UV index is January (UV index 5).

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Average cloud cover in May
North Key Largo, FL

Average cloud cover in May - North Key Largo, FL
  • Average cloud cover in May: 29

The month with the most cloud cover is October (Cloud cover 36).
The month with the least cloud cover is April (Cloud cover 26).

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Average visibility in May
North Key Largo, FL

Average visibility in May - North Key Largo, FL
  • Average visibility in May: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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