May weather forecast
North Key Largo, FL

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Weather in May

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

Temperature

The advent of May presents an average high-temperature of a still moderately hot 84.2°F (29°C), maintaining a close correlation with the preceding month. Throughout May, a minimal difference from peak daytime temperatures is noted, marking a steady low-temperature average of 76.6°F (24.8°C).

Heat index

During May, the heat index is computed to be a tropical 91.4°F (33°C). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.

Humidity

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

Rainfall

In North Key Largo, during May, the rain falls for 19.7 days and regularly aggregates up to 4.61" (117mm) of precipitation. Throughout the year, there are 225.9 rainfall days, and 40.91" (1039mm) of precipitation is accumulated.

Ocean temperature

In North Key Largo, in May, the average water temperature is 81.1°F (27.3°C).
Note: In water temperatures ranging between 77°F (25°C) and 84.2°F (29°C), activities such as swimming and diving become highly pleasurable for long durations.

Daylight

In North Key Largo, the average length of the day in May is 13h and 23min.
On the first day of the month, sunrise is at 6:44 am and sunset at 7:52 pm. On the last day of May, in North Key Largo, sunrise is at 6:30 am and sunset at 8:07 pm EDT.

Sunshine

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

UV index

The 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 value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: A typical high UV index of 7 in May suggests the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Warning! The reflection of sand and water increases the UV dose.
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Frequently asked questions

How hot does it get in North Key Largo in May?

In North Key Largo, 84.2°F (29°C) is the average high-temperature and 76.6°F (24.8°C) is the average low-temperature during May. The average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in May is computed to be 91.4°F (33°C).

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

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

How many days does it rain in May in North Key Largo?

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

How warm is the water in May in North Key Largo?

In May, the average ocean temperature in North Key Largo is 81.1°F (27.3°C). 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.

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

In North Key Largo, the average day length in May is 13h and 23min.

When are sunrise and sunset in May in North Key Largo?

On the first day of May, sunrise is at 6:44 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 8:07 pm EDT.

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

The average sunshine duration in May is 10.5h.

What is the month with the highest UV index in North Key Largo?

The months with the highest UV index are April through September, with an average maximum UV index of 7.

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

In North Key Largo, Florida, the average daily maximum UV index in May is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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"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).

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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).
The 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: 13h and 2min

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 3min

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).

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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

The 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

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).

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North Key Largo, Florida, USA

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